As a rule, floodlights are chosen to illuminate large areas - parking lots, courtyards of apartment buildings, warehouses, playgrounds, stadiums, but there are also small floodlights for illuminating the courtyard. And if earlier, when using incandescent lamps, these devices were large and bulky, then with the advent of halogen and LED lamps, their size has decreased significantly.
Not only the sizes of the spotlights differ, but also the technical characteristics, lighting brightness and, accordingly, the price. How to choose the right floodlight for street lighting or with a motion sensor? Which is better - halogen or LED? What is worth paying for, and what devices can you refuse? The rating of the best floodlights of 2021, based on real customer reviews, will help you understand all this.
Category | Name | price, rub. | Briefly about the main thing |
The best LED floodlights | SOYUZ SFLSLED-DOB-10-865-BL-IP65 1286 | 219 | Manufactured using Driver-On-Board technology - driver elements and LEDs are located on one board. |
Glanzen FAD-0005-50 00-0000019 | 500 | Power matrix on board, lighting angle 120°. | |
ERA LPR-30-6500K-M SMD Eco Slim B0027792 | 540 | Powerful source of directional light. Made on the basis of super-bright SMD LEDs. | |
The best halogen floodlights | TDM IO150 SQ0301-0002 | 340 | Recommended for decorative lighting of various outdoor objects. |
Camelion FLS-500/1 | 1200 | On a 2 meter tripod. Heat-resistant glass and anti-vandal grille. | |
Camelion ST-1002B | 1270 | Very bright – for large outdoor areas. | |
The best solar floodlights | Globo 3715S Solar | 5800 | Stylish original street lamp based on 4 LED lamps. |
Novotech 357345 | 4800 | Solar-powered landscape touch-sensitive LED lamp with motion sensor. | |
Garden garland, 10 LED lamps Auchan | 890 | A fantasy design in the form of 10 ladybugs, used to decorate bushes or trees. | |
The best floodlights with a motion sensor for outdoors | SDO-5DVR-20 | 850 | A powerful LED device with an external infrared motion sensor in an ultra-thin housing. |
Globo Projecteur I 34219S | 11900 | Classic rectangular shape. Illuminates 10 sq.m., coverage radius 180°. | |
NOVOTECH Armin 357530 | 1000 | Good color rendition allows you to clearly distinguish objects. | |
The best pole spotlight for street lighting | Odeon Light 4048/1B GINO | 2700 | Impact resistant, stylish. Base for incandescent or LED lamps. |
STL-50W01 | 3300 | SMD LEDs with special lenses in a molded housing. | |
Feron SP2925 30LED*30W AC230V/ 50Hz | 2400 | A large number of bright, durable and very economical LED lamps. |
Types of spotlights
The main gradation of lighting devices is based on the lamp used:
- halogen;
- metal halide;
- sodium;
- LED
Halogen
The design is based on an incandescent filament, and the bulb itself is filled with an inert gas. The lamps are economical and last longer than standard ones.
A halogen lamp is used as a light source; this is the same incandescent lamp, the bulb of which is filled
Metal halide
Built on the basis of a gas discharge lamp. The brightness is an order of magnitude higher, but operation requires a special lamp ignition unit and special operating conditions.
Sodium
It is based on a gas-discharge lamp; the bulb is filled with sodium vapor that emits light.
LED
The light source is a matrix of bright LEDs. These devices have the most compact dimensions and maximum service life.
The best LED floodlights
Models with mercury lamps are twice as economical. In addition, LED floodlights are designed for 50 thousand hours of operation and can withstand critical temperature changes, vibration and even shock loads.
SOYUZ SFLSLED-DOB-10-865-BL-IP65 1286
Manufactured using Driver-On-Board technology - driver elements and LEDs are located on one board. This quality made it possible to achieve both compactness and power of this model. The reflector is made of plastic and has heat-resistant properties, eliminating the risk of a short circuit between the reflector and the board with LEDs.
SOYUZ SFLSLED-DOB-10-865-BL-IP65 1286
Specifications:
Housing material | Metal |
Weight, kg | 0,19 |
Dimensions, cm | 10.5x8.5x3.5 |
Voltage, V | 220 |
Installation method | On the mounting arc |
Color temperature, K | 6500 (white) |
Pros:
- inexpensive;
- waterproof.
Minuses:
- for limited lighting;
- non-removable.
Glanzen FAD-0005-50 00-0000019
Used to illuminate park alleys, shop windows or building facades. IP65 degree of protection against dust and moisture ensures safe use and the ability to use the floodlight outdoors. Equipped with an SMD matrix. The body is made of black aluminum.
Glanzen FAD-0005-50 00-0000019
Specifications:
Housing material | Aluminum |
Weight, kg | 0,81 |
Dimensions, cm | 22.3x16.4x4.3 |
Voltage, V | 220 |
Installation method | On the mounting arc |
Color temperature, K | 6000 (white) |
Pros:
- shines brightly ~ like 300-500 W halogen;
- no complaints about voltage - works at 200-240 V;
- best offer for this price.
Minuses:
- There is not enough adjustment wing in the mount for better direction adjustment.
ERA LPR-30-6500K-M SMD Eco Slim B0027792
It is a powerful source of directional light, which has an outdoor design. It will be the best option for illuminating buildings, store windows, advertising structures and other structures. The product is made on the basis of super-bright SMD LEDs. Consumes significantly less electricity and lasts much longer compared to outdated models of halogen floodlights.
ERA LPR-30-6500K-M SMD Eco Slim B0027792
Specifications:
Housing material | Metal |
Weight, kg | 0,55 |
Dimensions, cm | 18.5x15.2x2.8 |
Voltage, V | 220 |
Installation method | On the mounting arc |
Color temperature, K | 6500 (white) |
Pros:
- thin body;
- large scattering angle;
- very bright.
LED floodlight - advantages and disadvantages
A spotlight is not the cheapest device. Therefore, the financial investment in its acquisition should justify itself. With LED models, achieving this goal is quite simple. And that's why:
- Life time. Most manufacturers are confident that their spotlights can operate up to 60 thousand hours or more (which is almost 7 years of continuous lighting). Of course, in practice this value is lower. However, the cost of an hour of operation of a lighting device, based on its price, usually costs the owner about 10 - 20 kopecks. Not a bad result.
- Input voltage. Depending on the model, they can operate in a voltage range of 85 - 258 V. And this is a big plus for areas where there may be fluctuations in the network.
- Security. Most outdoor LED projectors that can be purchased at retail are labeled IP65. It indicates complete resistance to dust and water jets. This means that they can be installed outdoors without additional preparation.
- Luminous flux and power. With the same power, LED spotlights produce a much stronger luminous flux. For comparison: a halogen with a power of 100 W provides 1200 Lm, and LED - 8000 Lm.
The main disadvantage is the high cost. But, as we have already said, over the long term it is compensated by a long service life and low energy consumption.
The best halogen floodlights
When turned on, electricity passes through the tungsten coil, causing it to heat up. As a result, the process of light emission begins. The design of the lighting device includes a lens, the function of which is to improve the efficiency of illumination of an object or a specific area due to directional action. The lamps in such spotlights can be transparent or matte.
TDM IO150 SQ0301-0002
It has a high degree of protection against dust and moisture IP54, which allows it to be used for street lighting. The internal reflector scatters light as efficiently as possible. This spotlight model is perfect for decorative illumination of various objects, for example: building facades, monuments, billboards, etc.
TDM IO150 SQ0301-0002
Specifications:
Housing material | Aluminum |
Weight, kg | 0,45 |
Dimensions, cm | 14x10x15 |
Voltage, V | 220 |
Installation method | On the mounting arc |
Color temperature, K | 3300 (warm white) |
Power, W | 150 |
Pros:
- directional lighting;
- price.
Minuses:
- non-demountable body.
Camelion FLS-500/1
Used to illuminate external areas. The spotlight is stable thanks to a 2-meter tripod stand made of high-strength steel, painted yellow. The body is made of aluminum alloy, resistant to corrosion. It is coated with powder paint that provides heat resistance, which increases the service life of the device and allows it to be used in a high temperature range. The spotlight also has heat-resistant glass that prevents moisture from entering. Equipped with a grill to prevent glass from breaking.
Camelion FLS-500/1
Specifications:
Housing material | Aluminium alloy |
Weight, kg | 0,45 |
Dimensions, cm | 70.5x20x17 |
Voltage, V | 220 |
Installation method | On the mounting arc |
Color temperature, K | 3300 (warm white) |
Power, W | 500 |
Pros:
- qualitatively executed;
- anti-vandal protection.
Minuses:
- The lamp gets very hot, do not touch it.
Camelion ST-1002B
Portable on a stand, it is used to illuminate large rooms or external areas. Made of aluminum alloy, resistant to corrosion. The body of the spotlight is powder coated. Heat-resistant glass protects against temperature changes; it is protected by a metal grille from breaking. The spotlight is equipped with a metal stand and a carrying handle. The range includes battery models.
Camelion ST-1002B
Specifications:
Housing material | Aluminium alloy |
Weight, kg | 0,65 |
Dimensions, cm | 31.8x23x21 |
Voltage, V | 220 |
Installation method | On the mounting arc |
Color temperature, K | 3300 (warm white) |
Power, W | 500 |
Pros:
- bright, two pieces are enough for a large yard.
Minuses:
- the stand is unstable.
Manufacturer
The choice of one manufacturer or another will determine not only the quality and durability of the equipment, but also the compliance of the actual characteristics with the declared ones. Of course, the products of the Noname company will cost much less, but it is not at all a fact that an LED spotlight, made by someone unknown from low-quality components, will not burn out in a week and will not fall apart in a month, leaving behind a mountain of screws. And even if it is new, it can shine much worse than something similar in characteristics, but manufactured by a reputable company.
But in this regard, you need to know when to stop, because too much good is also not good in financial terms. Some companies charge a lot of money just for the fact that they have a worldwide reputation. That is, in fact, the buyer pays not only for quality, but also for the brand.
This is exactly the kind of overpayment that you may encounter if you buy LED spotlights, for example, from the brands Philips, Osram or Hyunday. The products of these companies are quite expensive, although there is no doubt that they are made to last. Less well-known manufacturers Feron, Luna, Jazzway also create good, but more budget-friendly products.
Among Russian companies, high-quality lighting equipment with realistic prices is produced by Nanosvet and Era. From good budget ones you can choose Photon or FERON.
So, before you buy a spotlight, you need to:
Clearly imagine the task that the illuminator must perform. Calculate or at least estimate the required type, power and coverage sector of the device, taking into account the specific location of its installation. Study the offered range of lighting equipment, taking into account the warranty period, protection class, manufacturer, dimensions, paying attention even to such little things as the mounting method, appearance and overall impression. When choosing a spotlight, you shouldn’t be afraid of appearing like a “dummy” in front of consultants - that’s why sellers exist, to answer any questions, including stupid ones, before taking the money and handing over the goods.
Only by completing all the points can you be sure that the purchased device will not disappoint and will serve you happily ever after.
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For what purposes will the spotlight be used?
Lighting of parking lots, squares, protected objects
Lighting of a personal plot, yard, entrance, small area
Decorative lighting
At what distance will the spotlight be located from the object?
More than 20 m.
In close proximity
2-20 m.
Selecting the type of spotlight
A long-range spotlight with a dispersion angle of up to 20 degrees will suit you
A flood-type spotlight with a dispersion angle of 40-120 degrees will suit you.
A low-power spotlight with a dispersion angle of up to 45 degrees will suit you.
Retake the test!
Previous LightingSelection of LED street lights Next LightingLED street lights and its alternatives
The best solar floodlights
The controller controls the operation of the spotlight. Its simplest option is a photo relay (light sensor), whose task is to monitor the level of natural light. As it gets darker, the spotlight turns on, and as soon as it becomes light, it turns off accordingly. A more complex, but also more effective programmable controller, which is used in architectural and facade advertising floodlighting. There are more functions here - turning on/off, adjusting the lighting intensity, etc.
Globo Solar AL 3715S
Solar-powered lamp Globo from the Solar AL collection. The design of the 3715S lamp uses 4 transparent plastic shades and chrome-colored metal fittings. The model uses LED lamps with an LED base in the amount of 4 pieces. The main feature, in addition to the stylish design, is moisture protection of the IP44 standard, which allows use in wet rooms. Sensor: detection angle 120°, detection range up to 6 meters.
Globo Solar AL 3715S
Specifications:
Housing material | Aluminum |
Weight, kg | 0,65 |
Dimensions, cm | 15.7x18.15.5 |
View | Rotating spotlight |
Installation method | wall |
Color temperature, K | 3300 (warm white) |
Power, W | 0,5 |
Pros:
- the rotating mechanism is easy to adjust;
- the lamps are bright and provide good illumination;
- protected from moisture.
Minuses:
- there is no anti-vandal housing.
Novotech 357345
The solar-powered landscape touch-sensitive LED lamp with a motion sensor is made of plastic and is resistant to wind loads, humidity and mechanical damage. Designed for year-round use. Protection class IP65.
Sensor: detection angle maximum 130°, detection range up to 8 meters. Delay time: from 15 sec. up to 1 min., can be adjusted. LED service life is 25,000 hours. The battery life after fully charging the battery is 60 minutes. After the first day of charging the battery - 20 minutes. Operating temperature range from -20°С to +40°С.
Novotech 357345
Specifications:
Housing material | Impact resistant plastic |
Motion Sensor | There is |
Dimensions, cm | 19.5x18.2x5.2 |
View | Turning |
Installation method | wall |
Color temperature, K | 5000 (white) |
Power, W | 0.5, total – 6 |
Luminous flux, lm | 280 |
Pros:
- large capture radius and detection range;
- both lampshades rotate in different directions;
- Durable body, although plastic.
Minuses:
- after adjustment, the duration of lamp burning is not always maintained
Garden garland, 10 LED lamps Auchan
An original composition consisting of 10 small light bulbs with a total power of 220 W in plastic lampshades in the shape of ladybugs. Sold in the Auchan chain of stores, country of origin: China. The collection is not limited only to these types of insects; flowers, butterflies, dragonflies, just light bulbs, etc. are also on sale.
Garland
Specifications:
Housing material | plastic |
Motion Sensor | No |
Package dimensions, cm | 19x19 |
View | stationary on wire |
Installation method | On bushes, tree crowns |
Color temperature, K | 2000 |
Power, W | 220 |
Luminous flux, lm | 280 |
Pros:
- highlights the bushes in an original way, looks very beautiful
Minuses:
- minimum light - only as a guide
What types of spotlights are there on Aliexpress and how to choose the best one
To buy a spotlight on Aliexpress and not make a mistake with your choice, pay attention to the following parameters:
- power - the higher this parameter, the brighter the light from the lamps;
- type of power supply – floodlights can be either networked or solar-powered. The latter do not require charging, since they gain power during the day;
- beam angle - the wider it is, the more objects will be illuminated;
- motion detector - with it the lamp automatically turns on and off when people appear within a radius of several meters.
You have learned how to choose a spotlight. Let's move on to the rating of the best models.
The best floodlights with a motion sensor for outdoors
The operating principle of such a device is based on the detection of a moving object by a motion sensor. As soon as an object (person, animal, car, etc.) is in the detection zone, the infrared sensor will detect it and turn on the relay power. The normally open contacts will close and turn on the load that is included in the circuit, after which the lighting will turn on. The duration is programmable – from a few seconds to several minutes.
SDO-5DVR-20
A non-separable design, where the protective glass is glued into the body with nano-glue, which increases reliability and provides a high degree of protection against moisture and damage (IP 65) for the entire period. Lightweight, convenient for installation on a wall or horizontal surfaces, rotating handle 270°, thin body 5.5 cm. Operating temperature -40°С…+40°С.
The infrared motion sensor is configured automatically: sensing distance is up to 8 meters, on/off mode is 5 minutes, coverage angle is 120°. Used for residential and administrative buildings, illumination of parking lots, basements, etc.
SDO-5DVR-20
Specifications:
Frame | ultra-thin all metal |
Motion Sensor | There is |
Dimensions, cm | 13x19x5.5 |
Protective glass | Silicate hardened |
Installation method | wall |
Color temperature, K | 6500 (white) |
Power, W | 20 |
Luminous flux, lm | 1600 |
Pros:
- large radius and capture distance;
- rotary knob for adjustment;
- strained glass.
Globo Projecteur I 34219S
Made of plastic, glass shade. Powered by LEDs. The motion sensor capture radius is 180°, the sensitivity of the sensor is adjustable. Distance – 8-10 meters. Designed for year-round use, operates without failure at temperatures from -40°C to +40°C.
Globo Projecteur I 34219S
Specifications:
Frame | shockproof plastic |
Motion Sensor | There is |
Dimensions, cm | 18.5x10.5x17 |
Protective glass | Clear glass |
Installation method | wall |
Color temperature, K | 6500 (white) |
Power, W | 20 |
Lighting area, sq.m | 10 |
Pros:
- large radius and capture distance;
- works even on dogs and cats, but you can reduce the sensitivity of the sensor;
- captures movement from all directions.
Minus:
- with standard characteristics high price
NOVOTECH Armin 357530
The most common rectangular lamp with a non-programmable motion sensor (the controller closes the contacts when an object is detected at a distance of up to 8 meters within a radius of 120°), operating time is 15 seconds. Convenient, inexpensive, wall mounted. Designed for year-round use, the body is made of polycarbonate. Quite reliable design with IP65 protection from moisture and dust. Corresponds to a 100W incandescent lamp.
NOVOTECH Armin 357530
Specifications:
Frame | polycarbonate |
Motion Sensor | There is |
Dimensions, cm | 12.8x11.2x3.1 |
Protective glass | Transparent glass |
Installation method | wall |
Color temperature, K | 4000 (warm white) |
Power, W | 10 |
Lighting area, sq.m | 10 |
Pros:
- simple, no frills, but durable and works without problems in winter and summer.
Minus:
- non-demountable design, it is impossible to change the lamp.
For indoor lighting (in an apartment or house), the PFL-C 50W Sensor model is suitable - a 50w LED floodlight
The best pole spotlight for street lighting
Functional and efficient devices for working in the dark. They should provide bright street lighting, while being securely attached to a pole to withstand wind loads and work at any time of the year.
Odeon Light 4048/1B GINO
Street lamp with base for incandescent or LED lamps of different power. Depending on what power is selected: 10w, 20w, 30w, 50w, the lighting intensity changes. It is not recommended to use 500 W lamps; the lampshade is not intended for such a level of illumination.
Odeon Light 4048/1B GINO
Specifications:
Dimensions, cm | 13.1x15.1x35 |
Base | E27 |
Maximum lamp power | 100W |
Weight, kg | 1 |
Voltage, V | 220 |
STL-50W01
Outdoor LED lamp STL-50W01 with pole mounting 50W 220V 5500K IP65. Used for outdoor lighting with installation on a lighting pole. SMD LEDs with special lenses are used, the luminous intensity curve is semi-wide (“W”) in a high-strength molded housing. High lighting efficiency 115 Lm/W. Installation method: cantilever on a support bracket (pole). Estimated service life 50,000 hours.
STL-50W01
Specifications:
Light source | 72 SMD LEDs |
Housing material | metal |
Power consumption, W | 50 |
Luminous flux, Lm | 5750 |
Scattering angle, ° | 140 |
Dimensions, cm | 46x21.3x6.2 |
Choosing a street LED lamp or floodlight
In order to choose the right street lamp that has worked for a long time and effectively illuminated the required area, it is necessary to understand its technical characteristics and parameters.
By IP protection class
The main technical characteristic that you should first pay attention to when choosing any street lamp is its protection class against the entry of solid particles and water into the housing. LED lamps are marked by all manufacturers according to a single international standard. The protection class in the marking is indicated in accordance with the requirements of the standard for the protection of electrical equipment from external factors IEC-952.
Reference table for marking the protection of luminaires from external factors | ||
Serial number of the digital sequence in the marking | Designation in marking | Explanation of the designation |
Protection class from external factors | IP | The protection class in the marking is indicated in accordance with the requirements of the standard for the protection of electrical equipment from external factors IEC-952 |
First digit after IP, protection against penetration of solid objects | ||
0 | No protection | |
1 | From penetration of bodies with a diameter of 50 mm or more | |
2 | From penetration of bodies with a diameter of 12 mm or more, a length of no more than 80 mm | |
3 | From penetration of bodies with a diameter of 2.5 mm or more | |
4 | From penetration of bodies with a diameter of 1 mm or more | |
5 | Dust may enter in quantities insufficient to disrupt the operation of the equipment. | |
6 | Dust is not allowed | |
The second digit after IP, protection against liquid ingress into the housing | 0 | No protection |
1 | From vertically falling drops of water | |
2 | From water drops falling at an angle of 15° | |
3 | From water drops falling at an angle of 60° | |
4 | From water splashing from any angle | |
5 | From a stream of water sprayed from any angle | |
6 | From a strong jet of water (100 l/min, 100 kPa) | |
7 | From water ingress when immersed to a depth of up to 15 cm | |
8 | From water ingress during prolonged immersion |
Using the data in the table, it is easy to determine what class of protection against external factors an LED lamp should have and make the right choice. For example, when installing a lamp on a pole outdoors, solid particles in the form of dust and water from rainfall may penetrate into its body. Therefore, it is necessary to choose a street lamp with a protection class of at least IP64, where the number 6 means that dust cannot enter the housing, and 4 means that it provides protection from water splashed from any angle.
By illumination at coverage level
At the next stage of choosing a street lamp, it is necessary to determine, based on the object of illumination, the amount of illumination on the illuminated surface.
Illumination of surfaces is usually measured in lux, which is briefly denoted lux
and is measured using an instrument called
a Luxmeter
. To represent the illumination of surfaces in lux (the word comes from the Latin word lux, translated into Russian as light), you can compare it with the illumination provided by the full moon in clear weather, which is only 0.2 lux. And direct sunlight creates an illumination of 100,000 lux on the surface of the earth. To perform delicate work, such as jewelry, an illumination of 300 lux is sufficient.
Standards for surface illumination are regulated by the state document: “Natural and artificial lighting” - SNiP 05/23/2010, which is an updated version of SNiP 23-05-95 (Building codes and regulations were approved by order of the Ministry of Regional Development of Russia and entered into force in 2011). To select a street lamp, the information given in the table below is sufficient.
SNiP 23-05-2010 requirements for average horizontal illumination at the coverage level | ||
Illuminated objects | Average horizontal illumination, lux | |
Main pedestrian streets, impassable parts of areas of categories A and B and pre-factory areas | 10 | |
Pedestrian streets | within community centers | 6 |
in other territories | 10 | |
Sidewalks separated from the roadway on category streets | A and B | 4 |
IN | 2* | |
Landing areas for public transport on streets of all categories | 10 | |
Pedestrian bridges | 10 | |
Pedestrian tunnels | during the day | 100 |
evening and night | 50 | |
Stairs of pedestrian tunnels in the evening and at night | 20 | |
Pedestrian paths of boulevards and squares adjacent to category streets | A | 6 |
B | 4 | |
IN | 2 | |
Territories of microdistricts | ||
Directions | basic | 4 |
secondary, including sidewalks and entrances | 2 | |
Utility areas and waste disposal areas | 2 | |
Children's playgrounds where equipment for outdoor games is located | 10 | |
* The standard also applies to the illumination of sidewalks adjacent to the roadway of streets of categories B and C with transitional and lower types of surfaces |
It follows from the table that if the illumination of the surface of any territory, with the exception of pedestrian tunnels and stairs leading to them, is provided at least 10 lux, then the requirements of SNiP 05/23/2010 will be satisfied.
When choosing the level of surface illumination, it should be taken into account that over time the brightness of the LEDs decreases, and the luminous flux from the lamp will decrease. Therefore, in order to guarantee compliance of surface lighting with the requirements of SNiP throughout the entire service life of the luminaire, you should choose a luminaire with at least a two-fold reserve of luminous flux. For example, if the table requires an average horizontal illumination of 10 lux, then for calculations when choosing a lamp you need to take a value of 20-30 lux.
Technical characteristics of street lamps
After choosing the protection class that the lamp must correspond to and determining the level of illumination that needs to be provided on the illuminated surface, you can proceed to choosing an LED lamp according to other technical characteristics.
Table of technical characteristics of street LED lamps | |||
Parameter | Unit | Magnitude | Comments |
Operating temperature range | °C (degrees Celsius) | -60° ~ +40° | Ambient temperature at which the lamp must operate and comply with the stated technical characteristics |
Protection class | Denoted by IP | See table above | Determines the ability of the lamp to maintain functionality in conditions of dust and water |
Supply voltage range | V (volts) | 100-265 | The range of changes in the supply voltage value at which the lamp remains operational and provides the technical characteristics declared by the manufacturer |
Power consumption | W (watt) | — | Power consumed by the lamp when operating from the mains |
Power consumed by the LED module | W (watt) | — | Power consumed by LEDs during lamp operation |
Light flow | lm,lm (lumen) | Depends on power | The amount of luminous flux visible to the human eye that emits the lamp |
Luminous efficiency | lm/W | 80-100 | The amount of light that a lamp emits per watt of power consumption. The larger the value, the more economical the lamp |
Light level versus distance | m-lk | Depends on power | The amount of illumination of a surface depending on its distance from the lamp. As you move away from the lamp, the illumination decreases in inverse proportion to the square of the distance from the lamp. |
Radiation Angle | ° (degree) | Depends on design | The standard beam angle for LED luminaires is 120° |
Light spot | m×m | Depends on design | Dimensions of surface area that can be illuminated by a lamp depending on the distance to it |
Power factor | φ (cosine phi) | 0,5-0,95 | Depends on the driver circuit, the larger the value, the better the driver. In high-quality lamps φ>0.95 |
Colorful temperature | K (degrees Kelvin) | 3000-6000 | Characterizes the shade of white light. Street lamps are usually chosen with a color temperature of 4000K or 5000K |
Color rendering index (CRI) | Ra | 0-100 | The color rendering index characterizes the change in color of objects illuminated by an LED lamp from natural ones. For high-quality color rendition, the CRI value must be at least 80. |
Light flux pulsation coefficient | Kp,% | 0-20 | Depends on the driver circuit, the less ripple in the direct current, the better the driver. In high-quality lamps Kp<5% |
Life time | thousand hours | 50-100 | Over time, LED crystals degrade and the luminous flux of the lamp decreases. If the luminous flux of a lamp decreases by more than 50%, it is considered faulty |
Built-in motion sensor | — | — | Allows you to save energy by turning on the lamp only when moving objects appear in its illumination area |
Built-in light sensor | — | — | Provides automatic switching on of the lamp when it gets dark |
Built-in noise sensor | — | — | Provides automatic switching on of the lamp when a specified level of acoustic noise is exceeded |
dimensions | mm×mm×mm | Depends on power | As the power of the lamp increases, its overall dimensions increase |
Weight | kg | Depends on power | As the power of the lamp increases, its weight increases |
Manufacturers in the documentation for LED lamps do not provide all the technical characteristics listed in the table, although the list is not complete. This is usually due to the desire to hide the true level of quality of the street lamp. The more parameters are given in the passport or technical description of the lamp, the more confidently we can say that it is of high quality.
Formula and online calculator for calculating parameters
When selecting a street LED lamp, it is necessary based on the required surface illumination, which is measured in lux
, determine the luminous flux of the lamp, which is measured in
lumens
. And at this stage of choosing a lamp, difficulties usually arise, since not everyone understands how these physical quantities depend on each other.
Light flow
denoted by the Latin letter
F
, expressed in
lumens
and determines the amount of light power emitted by the light source, in a street lamp this is a lamp, LED or LED matrix.
Surface illumination
, denoted by the Latin letter
E ,
is measured in
lux
and proportionally depends on the magnitude of the luminous flux
F. The greater the luminous flux power of any lamp, the brighter it will shine.
Illumination on a surface with an area of 1 m2 equidistant from the light source of 1 lux is created when a luminous flux of 1 lumen falls on it.
As the lamp moves away from the illuminated surface, its illumination decreases in inverse proportion to the square of the distance. For example, the illumination of a surface at a distance of one meter from the lamp is 900 lux. If you raise the lamp to a height of 2 meters, the illumination of the surface will decrease by 4 times, and if by 3 meters, then it will decrease by 9 times and amount to only 100 lux.
Thus, in order to determine the luminous flux of a lamp, it is necessary to multiply the required level of illumination of the surface by its area, the following formula is obtained: F = E
×
S.
_
where: Ф
– luminous flux, measured in lumens, denoted
by lm
;
E
– surface illumination, measured in lux, denoted
lux
;
S
– area of the illuminated surface, measured in square meters, denoted
m2
;
Knowing the above laws and a school geometry course, it is not difficult to create a complete formula for estimating the required luminous flux power of a lamp based on the required surface illumination, the height of its suspension and the angle of the luminous flux.
where:
Ф
– luminous flux, measured in lumens, denoted
by lm
;
E
– surface illumination, measured in lux, denoted
lux
;
π
– Pi number, equal to 3.14;
h
– distance from the lamp to the illuminated surface, measured in meters, denoted
m
;
a
is the angle of radiation of the luminous flux of the lamp, measured in degrees, denoted by
°
;
It is convenient to calculate the luminous flux using an online calculator, which performs calculations in accordance with the formula presented above.
Online calculator for calculating the luminous flux and illumination area of a floodlight | |
Illumination, lux: | |
Distance from the lamp to the illuminated surface, m: | |
Angle of luminous flux, °: |
In the formula, I did not introduce coefficients that take into account the unevenness of illumination, the reflective ability of the illuminated surface of the territory and objects located on it, and the decrease in the luminous flux of the lamp over time, since it is impossible to know their exact values.