JPH083926Y2 - Reflective structure of reflective lighting - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] In the present invention, an opening is formed in a thin rectangular shape with a laterally long opening, and the inner surface of a standing wall of a lamp body is connected to the front of the lamp body in a stepwise manner. The present invention relates to a reflective structure of a reflection type lighting device in which an R-shaped step is formed to eliminate the occurrence of a dark portion generated on the inner surface of the lamp body standing wall.

[Conventional technology]

The external design of a vehicle lighting device such as an automobile constitutes a part of the external design of the vehicle body itself of an automobile, and in recent years, along with its high performance, a vehicle lighting device such as a sidelight, a taillight or a headlamp is externally provided. It is required to make the design surface of the front lens shown thinner and flat.

For example, as shown in FIG. 3, a reflector 52 is continuously formed integrally with a rear portion of a lamp body 51 that is vertically flat, and a reflecting surface 53 that is a paraboloid of revolution is formed on an inner surface of the reflector 52. However, a large number of diffusion steps 54, 54 ...
Are arranged, a light source 55 for lighting is disposed at the front focal point F of the reflector 52, and diffusion steps 56, 56, etc. for diffusing the emitted light flux in the left and right direction in front of the light source 55 are formed. A reflection type vehicular lamp covered with a front lens 57 is proposed. Thus, the luminous flux emitted from the light source 55 is
Diffusion step 5 formed on the reflecting surface 53 of the reflector 52
4,54 and diffusion steps 56,56 formed on the front lens 57
The light is diffused in the left-right direction and the up-down direction in front of the lamp to improve the irradiation range of the thin and flat reflective lamp.

[Problems to be solved by the device]

However, in the reflection type lighting device having the above-described configuration, since the reflection surface is not formed on the standing wall of the lamp body 51, particularly the inner surface of the lower standing wall 51a, when the front lens 57 is viewed from diagonally above (E), the standing wall 51a The inner surface is not reflected, and as shown in FIG. 4, there is a problem in that a dark portion S due to the non-reflective portion of the standing wall 51a is formed in the lower portion of the front lens 57, and the appearance from the front lens 57 becomes poor. .

The present invention was created in view of the above problems,
An object of the present invention is to provide a reflective structure of a reflection type lamp in which a stepwise reflection step is formed on a standing wall portion of a lamp body of the reflection type lamp to improve the appearance of the front lens from the front.

[Means for solving the problem]

In order to achieve the above object, a reflective structure of a reflective lamp according to the present invention comprises a reflector that is continuous to the rear of a tubular lamp body and has a reflective surface that forms a paraboloid of revolution on its inner surface, and a focal point of the reflector. In a reflection type lamp including a light source such as a bulb arranged at a position and a front lens covering the front of the light source, the reflection type lamp extends laterally on the reflection surface of the reflector and is visually recognized at substantially equal intervals in a front view. A large number of diffusion steps are formed in parallel in the vertical direction, and are formed on the reflector at least on the inner surface of the lower standing wall of the lamp body so as to be gradually stepped toward the front lens side from the focus position of the light source and stepwise. The gist is that a plurality of R-shaped steps extending in the same lateral direction as the diffusion steps are formed in parallel.

In addition, the diffusion step and R formed on the reflector.
The steps are preferably formed at equal intervals, and further, a plurality of diffusion steps extending in the vertical direction are arranged in the horizontal direction on the inner surface of the front lens.

[Action]

According to the above configuration, the light flux emitted from the light source is reflected by the stepped R-shaped steps, so that when viewed from a predetermined direction outside the front lens, particularly obliquely from above, there is a diffusion step formed on the reflecting surface of the reflector. It is possible to improve the appearance of the reflection lamp without emitting a continuous reflected light and generating a dark portion in the portion.

Further, since the R-shaped step and the diffusing step formed on the reflector are both formed to extend in the lateral direction and have the same diffusing direction, the reflected light does not feel uncomfortable and the unity of the entire reflective lamp is enhanced.

Further, when a large number of diffusion steps are formed on the front lens in a direction orthogonal to the direction in which the diffusion steps of the reflector are formed, a synergistic effect is produced between the diffusion steps of the reflection steps of the reflector and the vertical direction in the front of the lamp. It is also possible to control the light distribution in the left and right directions.

〔Example〕

Hereinafter, embodiments of a reflective structure of a reflective lamp according to the present invention will be described with reference to the drawings.

FIG. 1 is a vertical sectional view showing a reflective lamp according to the present invention.

Reference numeral 1 is a reflector which is continuous to the rear of the lamp body 2 formed in the shape of a flat cylinder and which is formed with a reflecting surface forming a paraboloid of revolution 3 having a focal point F on the inner surface. On the reflecting surface of the reflector 1, a plurality of diffusing steps 4, 4, ...
This is a structure in which the reflected light flux is diffused in the front up and down direction. Reference numeral 5 denotes a light source for lighting, such as a bulb, which is attached to a socket 6 fixed to the axial center L of the reflector 1, so that the light source 5 is located at the focal point F of the rotation parabolic curved surface 3. It is provided. Further, 7 is a front lens which is fixed to the front end portion of the lamp body 2 and constitutes a lamp chamber 8 in which the light source 5 is housed. On the inner surface of the front lens 7, a large number of concave cylindrical diffusion steps 9, 9 ... Generally extending in the vertical direction are arranged side by side in the horizontal direction to diffuse the reflected light beam from the reflector 1 in the left and right directions. It has a structure for emitting light.

Reference numeral 10 denotes a cylindrical lower wall portion 2a of the lamp body 2 which is inclined in a stepwise manner from the light source 5 side toward the front lens 7 side, and extends in the same lateral direction as the diffusion steps 4, 4, ... Of the reflector 1. It is an R-shaped step. This R
As shown in FIG. 2, each step 10 is a reflection step.
11, 11 are formed closer to the front lens 7 side than the position of the focal point F of the light source 5, and each reflection step 11, 11 ,.
It is formed so as to become gradually lower as it approaches the front lens 7. Also these reflection steps 11,11 ...
Are arranged at substantially equal intervals a, a ...
Have a relationship corresponding to the interval b, b ... Of the diffusion steps 4, 4. Thus, the standing wall portion of the lower surface of the lamp body 2
Since the R-shaped step 10 is formed in 2a, the light flux L1 emitted from the light source 5 is reflected by the step-shaped R-shaped step 10 and is emitted to the outside of the front lens 7, and the dark portion inside the lamp body 2 is reflected. Can be prevented.

In this embodiment, the R-shaped steps 10 formed in a stepwise arrangement are formed on the lower standing wall portion 2a of the lamp body 2, but the upper and side standing walls of the lamp body 2 are also stepped. Of course, the step 10 can be formed.

In addition, the diffusion step 9,
It is also possible to adopt a structure that does not require 9 ...

[Effect of device]

Since the reflection structure of the reflection type lighting device according to the present invention is configured as described above, the luminous flux emitted from the light source is reflected by the R-shaped steps arranged in a stepwise arrangement on the inner surface of the standing wall of the lighting device body.
The present invention has features such that a dark portion is prevented from being generated in the lamp body and the appearance as a vehicle lamp can be improved, and the practical effect after implementing the present invention is extremely large.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a reflective structure of a reflective lamp according to the present invention, FIG. 2 is an enlarged side sectional view of an essential part of an R-shaped step, and FIG. 3 is a longitudinal sectional view of a reflective structure of a conventional reflective lamp. 4 is a front view of the same. 1 ... Reflector, 2 ... Lamp body 2a ... Standing wall, 3 ... Rotating parabolic curved surface 4 ... Diffusing step, 5 ... Light source 7 ... Front lens, 10 ... R-shaped step 11 ... Reflecting step

Claims (3)

[Scope of utility model registration request] 1. A reflector, which is continuous to the rear of a tubular lamp body and has a reflective surface on the inner surface of which a paraboloid of revolution is formed, a light source such as a bulb disposed at the focal point of the reflector, and a front of the light source. In the reflection type lamp including a front lens for covering the reflector, a plurality of diffusion steps extending in the lateral direction and visually recognized at substantially equal intervals in a front view are formed in parallel in the vertical direction on the reflecting surface of the reflector. A plurality of R-shaped steps, which are gradually inclined toward the front lens side from the focal point position of the light source, are gradually stepped downward and extend in the same lateral direction as the diffusion steps formed on the reflector are arranged in parallel on at least the lower standing wall of the body. A reflective structure for a reflective lamp, which is characterized by being formed. 2. The reflection structure for a reflective lamp according to claim 1, wherein the diffusion steps formed on the reflector are formed at equal intervals, and the R-shaped steps are also formed at equal intervals. 3. The reflection structure of a reflection type lamp according to claim 1, wherein a plurality of diffusion steps extending in the vertical direction are arranged side by side on the inner surface of the front lens.