In appearance, Panasonic's products are beautiful in design, heavy in feel, and the outer casing is made of metal, which has good heat dissipation performance and ensures long life of LED. The appearance of a brand is rough, the hand feel is very light, the outer casing is made of plastic material, and there is no heat dissipation capability, which cannot guarantee the long life of the LED.
Figure 1: Product appearance
When the power is on, the quality of the Panasonic bulb is good, and the light makes it feel very comfortable, and there is no strobe. A certain brand of bulb light is not pure, mainly because the color rendering index is not high, and there is a serious stroboscopic phenomenon, which is likely to cause eye fatigue.
Figure 2: Comparison of luminous effects
Disassemble the lampshade, Panasonic uses a glass lampshade, the light is soft, it is not easy to age, the LED adopts ceramic COB device, the light-emitting effect is better, the whole COB is placed on the metal heat sink, and the assembly process is extremely fine.
A brand uses ordinary 2835 lamp beads (of course, this is not to say that 2835 is not good, but it is used in low-grade 2835, the lighting effect is not good), the lighting effect is general, the PCB board is ordinary FR4 board, and the heat dissipation performance is very poor. And there is no metal heat sink, no heat dissipation capability, the PCB is stuck through the four small card slots of the outer casing, and the assembly process is general.
Figure 4: Inside the interior of a branded bulb
Figure 5: Panasonic bulb power supply
A brand uses a low-end resistive-capacitor step-down power supply with poor performance, poor stability, and short life.
Figure 6: A brand of bulb lamp power supply
Performance comparison between the two
 | shell | Lamp beads | Internal structure | power supply | Assembly process |
Panasonic bulb | Metal heat sink | Ceramic COB | With heat sink + plastic electrical isolation | Isolated switch constant current source | Fine craft, firm |
Good heat dissipation performance to ensure LED life. | High quality lamp beads | Good heat dissipation and high safety. | High performance, high security | high quality | |
a brand of bulbs | plastic shell | Ordinary 2835 | No heat sink | Resistive capacitance step-down power supply | Process |
No heat dissipation | General performance | No heat dissipation | Poor performance, unstable, short life | general |
Cost estimate
Housing lampshade | Lamp + PCB | power supply | Assembly and packaging | total cost | |
Panasonic bulb | Metal heat sink, glass lampshade | Ceramic COB | Isolated switch constant current source | Fine craft, firm | 28 yuan |
10 yuan | 8 yuan | 8 yuan | 2 yuan | ||
a brand of bulbs | Plastic case, PC lamp cover | Ordinary 2835 | Resistive capacitance step-down power supply | Process | 4.5 yuan |
1.5 yuan | 1.5 yuan | 0.5 | 1 Yuan |
It can be seen that the LED lights of different brands have great differences in quality and price. From the perspective of quality and safety, we still recommend that consumers buy products with brand names that have a certain reputation, and the quality is guaranteed.
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