Dismantling fozhao 3W bulb was just so so?

Sample procurement channels

In order to ensure that the sample is genuine, the sample procurement is still Jingdong mall, the brand is FSL.

Two, sample publicity

Every enterprise and brand in the publicity have spared no effort, this is understandable. However, the actual design, structure, material, device selection and so on is different, different companies have different product attitudes and product view. We will bring you this period of FSL's bubble products dismantling report.

Three, packaging articles

FSL packaging uses a paper box, the label and product parameters only write the power, color temperature, and the interface model E27. No luminous flux and service life. Only the dubious state: "long life, durable" advertisement.

Four, sample test

Test data: using the integral ball test system to measure the photoelectric parameters of the bulb.

According to the data, the basic parameters meet the requirements. Just PF (power factor) lower. The lower the power factor, the greater the loss of power grid, which needs to be improved. The color rendering index 72 is the lowest of all tested bulbs.

Five, the whole lamp decomposition instructions

1 box 2 shades (glass bulb) 3 lamp 4 lamp body (plastic) 5 light source fixing plate 6 lamp bulb lamp power supply board 7

Six, part description

Lampshade: adopt PC material through injection molding, through the combination of glue and lamp plastic parts assembly. The surface is smooth, and it has the effect of matte surface, which makes the light more soft, but has a great influence on the flux loss. Through the actual test, it is found that the light transmittance of the lampshade: 0.94

Lamp body: plastic injection molding. The aluminum material through the plastic coating, external insulation performance is better.

The heat generated by the LED is transmitted to the plastic through aluminum material and then to heat exchange with the air, and the heat transfer and the heat dissipation efficiency are low, and can only be used on the low power products.

Lamp holder: E27 lamp socket for international standard size. The material was found to be an aluminum material by actual dissection.

Seven, the core components - light source components

LED: the use of SMD2835 packaging devices, the internal use of three chips in a series of packaging. According to the characteristics of the device and the chip, the device is packaged by domestic enterprises. The actual test case of LED welding electrode temperature: LED positive temperature of 77 degrees, LED negative temperature of 78 degrees, natural convection environment. Ambient temperature of 19 degrees.

PCB: the thickness of 1.0mm aluminum substrate, pad surface treatment OSP. The fixing of the PCB lamp board and the heat transfer plate does not pass through the screw, but is fixed by the fastening of the plastic part (the contact surface of the lamp board and the heat transfer plate is loose, which is not conducive to heat dissipation).

LED actual test data are as follows:

Eight, the core components - power

Power supply: through analysis, it is found that the topology of the power supply is a resistance capacitance step-down power supply. In this way, the LED current of the power output of the power supply is greatly affected by the input voltage, so the LED can not be controlled by constant current. Seriously affect the attenuation of LED.

Nine, publicity and the actual situation contrast

Ten, summary

As the old brand - "FSL", in the field of traditional lighting is an absolute leading position; from the traditional lighting to LED transformation process, it can be said to have a certain representation. But even this kind of domestic leading enterprises, whether it is the color rendering index, PF value or production process control of the process, are four of the largest enterprises in the bubble lamp dismantling the worst.

Through this dismantling found that some enterprises lack of artisan spirit, will do a good job of small things, doing fine is a very easy thing to do, even if it is a large enterprise, listed companies.

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