JPH0320963Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to the structure of taillights installed on motorcycles, and in particular, there are regulations in place that require sufficient light to be emitted to the sides to improve the visibility of this type of vehicle from the side. This corresponds to the situation in each country.

[Conventional technology]

Conventionally, there are methods shown in Figures 2 and 3 to deal with requests for taillights that emit a large amount of light to the sides.First, the method shown in Figure 2 is as follows: Separate auxiliary reflectors 14a and 14b are provided at symmetrical positions of the light body 11 when the tail light is viewed from the top of the vehicle, and the right auxiliary reflector 14b from the light bulb 12 is provided on the left side of the tail lens 15. The amount of irradiated light from the sides is ensured by assuming that the light rays passing through the light bulb 13 and the direct light rays from the light bulb 13 are emitted. The structure of this taillight is bilaterally symmetrical, and therefore the light rays emitted to the right side surface of the tail lens 15 are obtained in the same manner. Next, in the one shown in FIG. 3, the auxiliary reflectors 14a and 14b provided in the conventional example shown in FIG.
This is omitted by providing a vertical wall 11a at a position intermediate between the light bulb 13 and the light bulb 13, and the light reflected on the vertical wall 11a of the light bulb 12 and the direct light from the light bulb 13 are emitted from the left side of the tail lens 15. In this case, the vertical wall 11a
It is preferable that the reflector be treated to increase reflection efficiency, such as by vacuum plating of aluminum. Note that the description of the right side surface of the tail lens 15 will be omitted for the same reason as in the previous example. Furthermore, in both the conventional examples shown in FIGS. 2 and 3, what is indicated by the reference numeral 16 in the drawings is the body of the vehicle on which this tail light is provided.

[Problem that the invention attempts to solve]

However, in any of the conventional examples described above, the position where the auxiliary reflecting mirrors 14a and 14b are provided, or the position where the vertical wall 11a is provided is the light bulb 12,
When the tail light is viewed from the front, a shadow area shown by reference numeral D appears in the figure, which seriously impairs the display quality of the tail light. In addition, especially in the conventional example shown in Fig. 3, the auxiliary reflector is attached separately, which results in a complicated structure and the problem of being extremely expensive for this type of taillight. Ta.

[Means to solve the problem]

The present invention is a specific means for solving the problems that occur in the conventional taillights described above. A vertical wall is integrally provided at the connecting portion of the reflecting surface to reflect the light from the light source to the side, and a parabolic auxiliary reflector is provided at the top of the vertical wall with the respective light sources as a substantially focal point. By providing a side illumination structure for a tail light for a two-wheeled vehicle, which is characterized in that a surface is formed, the above-mentioned conventional problems are solved by preventing the formation of shadows.

【Example】

Next, the present invention will be explained in detail based on an embodiment shown in the drawings. Most taillights of this type are bilaterally symmetrical, so in order to avoid unnecessarily complicating the explanation, we will mainly explain the left half, and explain the right half as axially symmetrical. Therefore, detailed explanation will be omitted. What is indicated by the reference numeral 1 in FIG. 1 is a lamp body made of resin or the like, and inside the lamp body 1, two light sources, a light bulb 2 and a light bulb 3, are arranged on the left and right sides, and the light body On the back side of the light bulb 1, there are two parabolic main reflecting surfaces 1a whose focal points are at the filament positions of the light bulbs 2 and 3.
1b is formed, and a tail lens 5 is disposed on the front side to constitute a tail light. Here, according to the present invention, in the lamp body 1, the reflection from the light bulb 2 is applied to the junction of the two main reflecting surfaces 1a and 1b, that is, to the left side surface 5a of the tail lens 5 perpendicular to the center of the lamp body 1. A vertical wall 4 having a height H is provided to appropriately irradiate light. It goes without saying that when determining the height H of the vertical wall 4, the direct light from the other light bulb 3 is also taken into consideration. At the top of this vertical wall 4, auxiliary reflective surfaces 4a and 4b are integrally formed with a paraboloid F whose focal point is the filament position of the light bulbs 2 and 3.
a, 4b are the light bulbs 2, similar to the main reflecting surfaces 1a, 1b.
Reflect the light from step 3 forward. The taillight constructed in this manner is attached to the vehicle body 6 in the same manner as conventional taillights. The above explanation has been made assuming that the taillights have symmetrical light distribution characteristics, but for example, if the relevant regulations require different light distribution characteristics for the left and right sides,
It goes without saying that taillights that comply with the regulations can be obtained by appropriately modifying the means described above.

[Effect]

By providing a vertical wall in the center of the lamp body with this invention, the light from the light bulb reflected on this vertical wall causes the taillight to emit light to the left and right sides, and the top of the vertical wall also has a parabolic shape. By providing the auxiliary reflective surface, this auxiliary reflective surface reflects light forward in the same way as the main reflective surface, eliminating the shadow that occurs on the tail lens in the conventional example.

[Effect of the idea]

As explained above, according to the present invention, the side lighting structure of a taillight for a motorcycle is provided such that a vertical wall is integrally provided at the connecting part of the two main opposite slopes so as to reflect the light from the light source to the side, and By adopting a structure in which a parabolic auxiliary reflecting surface is formed at the top of the vertical wall, with each of the light sources as a substantially focal point, the necessary illumination illuminance to the side of the tail light can be obtained by reflection from the vertical wall. and provides an excellent effect of providing a taillight with excellent display quality by eliminating the shadow caused by providing the vertical wall by providing an auxiliary reflective surface at the top of the vertical wall, Further, by forming the vertical wall etc. integrally with the lamp body, it is possible to provide this type of taillight at a low cost.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing essential parts of an embodiment of a side illumination structure for a tail light for a two-wheeled vehicle according to the present invention, and FIGS. 2 and 3 are cross-sectional views showing a conventional example. 1... Lamp body, 1a, 1b... Main reflecting surface, 2, 3
... Light bulb, 4 ... Vertical wall, 4a, 4b ... Auxiliary reflective surface, 5 ... Tail lens, 6 ... Vehicle body, H ... Height of vertical wall.

Claims (1)

[Scope of utility model registration request] In a tail light for a motorcycle in which two light sources each have a main reflecting surface and are housed in an integrated lighting device, a vertical wall is provided at the connection part of the two main reflecting surfaces to reflect the light from the light sources laterally. A side illumination structure for a tail light for a two-wheeled vehicle, characterized in that the vertical wall is integrally provided with a parabolic auxiliary reflecting surface formed at the top of the vertical wall, with the respective light sources as a substantially focal point.