Headlight for night riding motorcycles, its meaning is self-evident. In addition, in thick fog, rain, and the light of the day, before the light is very big. Japan from 1991 began to force the legislation to force a motorcycle to install the headlight, until 1996, all of the motorcycles are equipped with a headlight. Statistics show that in 2000 the Japanese motorcycle to maintain the amount of 13000000, the proportion of the use of the day before the lights up to more than 60%. Because of the morning (04:00-07:59) used in the headlights, the 2000 motorcycle accident ratio in 1990 was reduced by 13000 times. Obviously, in the light of the use of the first light, can greatly reduce the incidence of motorcycle traffic accident.
In all of the motorcycle lamps, the most important, the most complex, but also the most able to reflect the technical level of a lamp production enterprises. Before the light and the majority of motorcycle users of life and property safety is closely related, so be sure to cause everyone's attention.
1, the national standard for motorcycle headlights technical requirements
According to the GB7258-2004 "motor vehicle running safety technology conditions", GB5948-1998 "motorcycle incandescent light source with light, GB19152-2003" and GB18100-2000 "light on the performance of the light, and the installation of two wheeled motorcycle and light motorcycle lighting and optical signal device," and other mandatory standards, the motorcycle headlights should meet the following 6 technical requirements.
A) in normal use conditions, the former light is installed with reliable and effective, and can not be caused by vehicle vibration, damage, loss of function or change the direction of light, even by vibration, can still guarantee to meet the use requirements.
B) headlamp should also have a far and near light beam and light distance transform device, in changes the high beam near light headlamp should also be extinguished, near light should be anti glare.
C) even in the dark, it can also be installed in the correct position of the headlight bulb, that is, the positioning card can accurately enter the positioning groove (size fit), and when the wrong position of the bulb will be significantly skewed.
D) headlamp light color is white, the color characteristics shall comply with the provisions of GB4785. Check the color coordinates should be specified using the GB/T3978 standard light source A (color 2856K).
E) light headlamp requirements, near light with sufficient lighting is not dazzling, beam with good lighting.
When the motorcycle is equipped with S1, S2 incandescent light bulb, S3, S4 incandescent light bulb (see Figure 1) or similar type of enclosed type, the light should produce a clear horizontal and light and dark line, motorcycle should be at least 5 degree range of V-V line in V-V line.
When the motorcycle with HS1 halogen lighting, mopeds with HS2 halogen lamps (see Figure 2) or similar closed before the light, near light should produce obvious brightness cut-off line, motorcycle light near horizontal part should be in a V-V line on the left side of, the right to and horizontal line upwards of 15 DEG slash, or up to 45 degree oblique to perpendicular to horizontal line 25cm to horizontal line; Mopeds near light should be around V-V line at least 2250mm range to maintain the level, and in the adjacent illuminance changes evenly, no obvious mutation.
F) the light bulb used by the former light bulb shall comply with the provisions of table 1. Lighting is a fragile thing, after a period of time, may burn out or damaged, replace the bulb must pay attention to purchase in accordance with the provisions of the lighting, not easy or cheap and the use of substandard lighting.
2, domestic motorcycle headlight technology status quo
China's motorcycle lamps industry started in 1980s, after 20 years of development and growth, to 2003 has been developed into a company with more than 300 production enterprises, the annual output of 15000000 sets, an annual output value of about 1000000000 yuan. At present, some domestic lamps and lanterns enterprises and foreign enterprises in the manufacturing technology gap has been very small, and its products can be comparable with foreign enterprises.
With the development of science and technology, some new technologies and new technologies have been applied to the front lamps of the domestic motorcycle. The typical application of the (PC) with the surface of the light curing process, the free surface of the surface of the free surface (FREE-FORM) is compared.
The curing process is the UV light curing coating on the outer surface of the PC, which can improve the hardness, wear resistance and anti ageing properties. The technology has been widely used in the automotive lamps, but the motorcycle lamps and lanterns factory is a new technology, because in the past, the vehicle factory has almost never been raised, so there are few motorcycle lamps factory application of the technology. At present, some vehicle factory to improve the product quality, increase product selling point, the lamps and lanterns put forward this request.
At present, the market appears on the "crystal lamp" is the use of the free surface of the light technology. Due to the former motorcycle headlamp light performance is relatively simple, so before in the past, most of the motorcycle headlamp using relatively simple parabolic, and the light effect is reflected by the mirror and the light distribution mirror together with the completion. But the surface of the mirror of the free surface is a set of smooth irregular geometry. It is a complex operation and the critical parameters are optimized. In the light of the reflection of the light, the dual role of the light reflected from the free surface of the light has been met the design and regulations requirements, this time with light microscope has not played a role, it is not necessary to design with light microscope. Since the free surface mirror can improve the effective utilization of the mirror surface, the design of the front light is also
