East Asia each enterprise LED bulb, design thinking difference is obvious (1)

With lower prices, LED bulbs began to popularize. Recently, not only Japanese manufacturers, South Korea, mainland China, Taiwan and European manufacturers have also begun to focus on the production of LED bulbs. To this end, the reporter for the sale of 9 LED bulbs in East Asia were disassembled and analyzed and found that the Japanese manufacturers and overseas manufacturers in the design of the existence of a huge difference.

LED bulbs are increasingly becoming an alternative to incandescent bulbs. It is characterized by low power consumption, however, in addition to the price higher than incandescent bulbs, many users also believe that the existence of a larger, heavier and other design issues. To this end, the reporter is currently selling, from a number of production bases in East Asia LED bulbs were disassembled and analyzed in order to find solutions to these problems. Through the dismantling, found that the Japanese manufacturers and overseas manufacturers in the design of the differences in thinking, which is the Japanese manufacturers attach importance to product design, and overseas manufacturers are given priority to the cost".

The most obvious difference is the base of the LED bulb. Overseas manufacturers of LED bulbs are equipped with heat sinks, and Japanese manufacturers of products with no heat sink. At first thought it would be cheaper to think that there is no heat sink, but in fact, there is no need to use a high heat dissipation of high temperature components, so the cost is not reduced. Do not use heat sink is "in order to improve product design" (Toshiba lighting technology). Not just the company, many Japanese domestic manufacturers are trying to make the shape of LED bulbs close to incandescent bulbs. The overseas manufacturers of LED bulbs "by using almost extensive design, cut costs" (to help dismantle the technical staff).

Let us look at the specific look at the appearance of the different design ideas.

The surface temperature of the lamp housing is different

The total dismantling of the 9 LED bulbs, respectively, from South Korea, Taiwan and mainland Chinese sales of products in the randomly selected 8 models, as well as the choice of the appearance of Japan from the sales of products in the most close to the incandescent light bulb 1 (Figure 1, table 1). These products are used E26/27 ordinary lamp mouth. The nominal value of the product, the power consumption in the range of 4 to 7.5W, the total luminous flux in the range of 210 to 600lm. Among them, the power consumption and the total flux close to the Toshiba 7.2W lighting technology products, South Korea's Samsung LED 7.1W products and Chinese KingSun 7.5W as A group, B group as the rest. (Editor: LEDxume)

Figure 1: dismantling 9 LED bulbs

Toshiba lighting technology 7.2W products, Samsung LED 7.1W products and 7.5W KingSun products due to power consumption and total flux close, so as A group, the other as the B group. Power consumption and total luminous flux are nominal values.