JPH0638105U - Automotive lighting - Google Patents

Abstract

(57) [Summary] [Purpose] In a vehicle lamp configured so as to wrap around the front side (or rear side) of the vehicle body to the side of the vehicle body, prevent the side portion of the lamp from becoming a dark part. An automotive lamp comprising a front lens of a housing (1) forming a lamp chamber and a wraparound portion (1d) formed by laterally wrapping one side of a standing wall of the housing with a front lens (4). In, inside the standing wall portion (1d),
A light guide for receiving a part of light from a light source bulb (2) provided in a lamp chamber and irradiating the received light laterally from a side opening (6) formed by a wraparound portion (1d). Arrange the body (5). [Effect] The region including the wraparound portion becomes a dark portion outside the angle range of the emitted light of the bulb, but by providing the light guide (5), it becomes bright as in the front.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicular lamp such as a headlight, a direction indicator, and a backward light, and in particular, a vehicular lamp configured to wrap around to a side of a vehicle body from a front portion or a rear portion of the vehicle body due to its design. Regarding

[0002]

[Prior art]

 Conventionally, as this type of lamp, the lamp shown in FIGS. 7 and 8 is known. In the figure, reference numeral 1 is a synthetic resin housing forming a lamp chamber. The housing 1 has a supporting portion 1a for supporting the socket 3 of the light source bulb 2, a reflector portion 1b extending from the supporting portion 1a and provided with a reflection film, and protruding forward from the reflector portion 1b. The standing wall portion 1c and a wrap-around portion 1d that wraps one side of the standing wall portion 1c laterally are provided. The front surface of the housing 1 and the wrap-around portion 1d are covered with a front lens 4. f is the filament of the bulb.

[0003]

[Problems to be solved by the device]

 In the lamp having the above structure, among the light rays from the light source bulb 2, the reflected light reflected by the reflector portion 1b is emitted in the optical axis direction, and the direct light from the light source bulb 2 is the standing wall portion 1c forming a housing. The light is emitted within the angle range regulated by the tip of the. Therefore, as described above, in the configuration in which the wraparound portion 1d that wraps around one side of the standing wall portion 1c of the housing 1 to the side is provided, the region including the wraparound portion 1d is within the range of the light emission angle of the valve. Since it is placed outside, it appears as a dark area to a bright area in front.

[0004]

[The purpose of the device]

 The main object of the present invention is to provide an automotive lamp capable of illuminating a region including the wraparound portion as brightly as a front surface.

[0005]

[Means for Solving the Problems]

 The present invention relates to a vehicle lamp comprising a front lens of a housing that forms a lamp chamber and a wrap-around portion in which one side of the standing wall portion of the housing is laid sideways and covered with a front lens. The gist of the present invention is to provide a light guide body that receives part of the light from the light source bulb provided in the lamp chamber and irradiates the received light toward the side of the vehicle body including the wraparound portion. .

[0006]

[Action]

 According to the above configuration, the area including the wraparound portion is illuminated by the light guide plate, and thus has the same brightness as the front surface.

[0007]

【Example】

 1 and 3 show an embodiment of the present invention. Members which are the same as or similar to those in FIGS. 7 to 8 are denoted by the same reference numerals. That is, reference numeral 1 is a synthetic resin housing forming a lamp chamber, and this housing 1 is a socket support portion 1a of a light source bulb 2 and a reflector portion 1b extended from the support portion 1a and provided with a reflection film. And a wrap-around portion 1d that extends forward from the reflector portion 1b and a wrap-around portion 1d that wraps one side of the erected wall portion 1c laterally. The front surface of the housing 1 and the wrap-around portion 1d are front lens It is covered with 4. A reflection layer 1e formed by aluminum vapor deposition or silver coating is formed on the front portion of the wraparound portion 1d.

A plate-shaped light guide 5 oriented in the optical axis direction of the lamp is installed inside the standing wall 1 c of the housing 1. The light guide body 5 is a colorless and transparent homogeneous medium, and is made of a material having a total reflection prism, such as synthetic resin or glass.

Of the both end faces a and a of the plate-shaped light guide 5, the end face a located on the bulb side has an angle necessary to totally reflect a part of the direct light from the valve. It is formed on the light-receiving surface that has been cut into pieces, and also serves as a light-receiving surface that receives a part of the reflected light beam from the reflector portion 1b. The other end face (i) was cut so as to have a necessary angle for reflecting the light beam incident on the light receiving surface (a) toward the side at the side opening 6 formed by the wraparound portion 1d. It is formed on the reflective surface.

In the above structure, a part of the light rays a from the light source bulb 2 is incident on the light receiving surface a of the light guide 5 and is totally reflected because it exceeds the critical angle of the light guide medium. The light rays that have passed through the inside of the light guide are totally reflected again by the reflecting surface B, and are radiated from the side opening 6 of the housing through the front lens 4 to the side W of the vehicle body. In this case, the light source of the light ray a becomes a pseudo light source f'by the total reflection prism of the light guide 5. Of the light rays reflected from the reflector portion 1b, a part of the light rays b is incident on the light receiving surface A, passes through the light guide 5, and is totally reflected on the reflection surface B in the same manner.

Therefore, according to the above configuration, the dark region including the wraparound portion 1d of the housing, which is located outside the emission light angle range of the bulb, is the same bright region as the front due to the emission light from the light guide 5. Become.

4 to 6 show modified examples of the light guide 5. In FIG. 4, a metal coating 7 is formed on the reflection surface B of the light guide body 5 to enhance the reflection effect. In FIG. 5, the light receiving surface A is curved. FIG. 5 shows a multi-staged light receiving surface.

[0013]

[Effect of device]

 As described above, according to the present invention, the front part of the housing that forms the lamp chamber and the wrap-around part that laterally wraps around one side of the standing wall part of the housing are covered by the front lens. In the lamp, it is possible to easily obtain irradiation light for brightening a dark area including the wraparound portion.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an automotive lamp according to an embodiment of the present invention.

FIG. 2 is a partially cut front view of FIG.

FIG. 3 is a perspective view of a light guide.

FIG. 4 is a perspective view of a light guide body having a reflective surface coated with a metal.

FIG. 5 is a perspective view of a light guide whose light receiving surface is curved.

FIG. 6 is a perspective view of a light guide body having a multi-stage light receiving surface.

FIG. 7 is a cross-sectional view of a conventional vehicle lamp.

8 is a front view of FIG. 7. FIG.

[Explanation of symbols]

 1 Housing 1a Socket support part 1b Reflector part 1c Standing wall part 2 Light source bulb 3 Socket 4 Front lens 5 Light guide 6 Side opening 7 Metal coating layer f'Pseudo light source A Light receiving surface b Reflecting surface

Claims (1)

[Scope of utility model registration request] 1. A vehicle lamp comprising a front part of a housing that forms a lamp chamber and a wrap-around part that wraps around one side of a standing wall of the housing laterally with a front lens. A light guide body is provided inside, which receives a part of light from a light source bulb provided in the lamp chamber and irradiates the received light toward a side of the vehicle body including the wraparound portion. Automotive lighting fixtures.