Japan's three lamp manufacturers display LED headlamps

Three Japanese famous lighting manufacturers in 2005 and the car technology exhibition (Pacifico Yokohama, May 2005 18 ~ 20 days) were displayed using white LED headlamp sample trial. In 2007 the relevant laws and regulations, LED headlamps are expected to be allowed to use, so companies are stepping up the development of.

Stanley electric and small silk production exhibited by LED products, the light industry is on display in the auxiliary AFS (Adaptive Front lighting System) using LED lamp products. The company did not use LED on the high beam and turn lights. The reason is not estimated and compared to the low frequency of use, the cost is not worthwhile, "(small silk production).

Figure 1: Stanley displays the LED headlamp. The big ball left for the use of light HID, the middle of a plurality of balls to the right to use the LED lamp. Different from the direction of the irradiation of the LED, according to the driving conditions to switch to open the LED, in order to achieve AFS function.

Stanley electric on the brightness of the lamps is 900Lm, with the existing HID (High Intensity Discharged lamp) the same. By increasing the brightness of the LED, the brightness is higher than the company's previous 750lm. The headlights are used in 10 LED. At present, the luminous efficiency of LED is only about 30lm/w, but when the production is expected to increase to about 50lm/w (person in charge).

Figure 2: Stanley electric LED lamp structure. High speed use the above 5 LED lights, usually use the following 6 LED lights. 3 LED lights from top to bottom of the number of second lights have been opened. In the intersection and other occasions, the need to illuminate the front side of the car to use the "wide" part of the configuration of the 2 LED. Small silk production also exhibited the brightness of the 800lm before and after the LED headlamps. Using 11 LED, the luminous efficiency of each LED is about 40lm/w.

Figure 3: the LED headlights on a small silk production. On the basis of the TOYOTA "Estima" headlights embedded in the LED. In addition to the 5 central LED, the following are also tied to the use of the 6 LED. City Light Industry in the front of the embedded auxiliary lights used in LED. Although yuanguangdeng and the lamp is used in HID, but in order to achieve the function of AFS and the 11 LED irradiation in different directions. With small lights, including a total of 13 LED. (reporter: Ogawa Keisuke)

Figure 4: LED light display on the city's light industry. With small lights, including the use of a total of 13 LED. The globe lamp HID, as well as yuanguangdeng and the lamp. HID on the left side of the 3 LED lights. Each lamp consists of 2 LED. The 3 LED lamps are arranged in a straight line with a minimum of 5 LED. In addition, a small lamp is provided with a wire like shape along the shape of the headlight. The small lamp uses 2 LED.