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Longmeike human body induction LED wall light dismantling report
Package Appearance: The product displayed in the window, the first impression of any guest is the packaging and appearance of the product. The first feeling of getting this small wall lamp is that the package is simple and generous. The K-series paper-made box is resistant to breakage and has a crisp echo when struck. The information on the box is complete: it contains the product model, manufacturer information, contact details, compliance standards and certifications passed; the front also highlights the need for wiring. The lamp body is made of aluminum products for aesthetic design, and the surface treatment process is wire drawing. The shape of the luminaire reminds me of the small alarm clock that is commonly used during school (it seems better if the alarm is also integrated on the luminaire).
Power switch: Press the first time the main light is on and the side light is on.
Press the second time, the main light is half bright and the side light is off.
The actual test effect is functional.
Light the luminaire in a dark room: Test its light color parameters.
Figure 1: Spectral distribution of the main lamp. The spectrum of the white light produced by the LED is a typical blue LED + yellow-green phosphor.
Figure 2: Main lamp chromaticity coordinates. X: 3838, Y: 0.3883.
Figure 3: Luminous color temperature, color rendering index, illuminance and wavelength.
Figure 4: Color temperature, color rendering index, illuminance and wavelength of lamps outside 1 meter.
Test Description: It is of little significance to test the luminous flux as a non-main lighting product for wall lamps. It is recommended to use illuminance as a reference value.
Light the luminaire in a dark room: Test the side light color parameters.
Figure 1: Sidelight spectral distribution. Obviously blue.
Figure 2: Sidelight chromaticity coordinates. X: 2851, Y: 0.2984.
Figure 3: Luminous color temperature, color rendering index, illuminance and wavelength.
Test description: Why is the side lamp illumination higher than the main lamp? This is because the side light illumination angle is too small.
Disassemble the front cover: the main light module and the induction module are exposed. There is also a reflective sheet with a plastic coated surface. The luminaire mainly adopts the side illuminating + reflector mode (limited light source utilization).
Disassemble the lamp body to include: 1. The battery compartment back cover. 2. Reflector. 3. The front cover of the lamp body. 4. Induction module. 5. The back cover of the lamp body. 6, the light source module. 7, 4 screws.
Human Body Sensing Module: Controls the lighting of lights when people are close.
Photodiode: Automatically shields the sensing function when the external light is strong enough.
Two light sources are used in the light source module:
1. The main light source group uses 10 LED devices packaged in SMD3528.
2. The side lamp adopts a 5mm diameter in-line package LED device.
Main light is on
The induction module is removed, and the button switch is used to adjust, and the distribution is completed with the main lamp being fully illuminated and the main lamp being half-bright.
Simple analysis by circuit, its topology is as follows: powered by battery No. 5, regulated by IC 7336, IC BIS0001 for infrared sensing; IC WSD023 for segmented dimming of LED.
Summary and recommendations:
The lamps dismantled this time are lamps for decorative, auxiliary lighting and emergency lighting. Overall, the company is very hardworking and has done a good job in the design and packaging of the product. The overall function of the luminaire is also very good, and the sensor function setting is also very reasonable. After the person leaves, the 20S lamp is extinguished, and the lamp is protected from the error-proof function when the external light intensity is high.
Distinctive product features: no wiring required, easy to install. The installation method provides 3M adhesive tape and screw mounting. This luminaire uses an LED light source that is well matched to the LED: low voltage, energy saving, fast response and directivity.
Suggestions: 1. Increase the clock and alarm function. The induction wall lamp is mainly used at night, what should I do during the day? If you add a clock function during the day, you can also use the alarm function to remind the user to turn off the main control switch.
Recommendation 2, the side lights change the color temperature. The test found that the color temperature of the side lamp currently used is 9239K, and the color is blue. Cool colors have a terrifying feeling, especially in dimly lit environments. If at night, the user just watched the Liao Zhai series of movies, and found out that there is a faint blue, what will happen?
Recommendation 3, product parameter changes. The box says: highlight 45lm / low 25lm; for the lumens, it is not necessary at night, this product is not used as the main lighting, no need to use the lumen value to measure. It means that the illuminance of 1 meter is directly provided.
Recommendation 4. Replace the reflector and front cover. After dismantling, it is found that if the bottom cloth light source is used to reflect the light through the reflector to change the angle and then transmit through the front cover, the utilization of the light is low. If the mode of the light guide can be used, can it increase the utilization of light?