JPH0446974Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an automobile sun visor with a built-in lighting device.

[Conventional technology]

Conventionally, the sun visor for automobiles was developed in 1982.
-22117 and other devices with built-in light sources have been put into practical use to provide hand illumination at night. FIGS. 4 and 5 show the most common type of sun visor 1 with an illumination device. To briefly explain this, 2 is a sun visor body, 3 is a sun visor body 2 with a body 4 attached to the center of the surface of the sun visor body 2. 5 is a light source housed on both sides of the body 4 and protected by a lens 6. Light 7 emitted from the light source 5 passes through the lens 6 and is reflected by the mirror 3. It is configured to illuminate the front. A step 8 is formed on the back surface of the lens 6 to diffuse the light 7, thereby making it possible to illuminate a wide range.

Reference numeral 9 designates a lid body that can be opened and closed to cover the mirror 3 when not in use, and 10 and 11 designate hook-and-loop fasteners.

[Problem that the invention attempts to solve]

However, in such a conventional sun visor 1, there was a problem in that the light diffused by the lens step 8 was strong and dazzling, making it difficult to visually recognize the mirror 3.

Therefore, as a means to solve this problem, for example, a light guide plate larger than the mirror is placed on the back of the mirror, and the light emitted from the light source is guided into the light guide plate and emitted forward from the periphery of the light guide plate. A sun visor (Utility Model Application No. 58-100815) has been proposed which provides indirect illumination by providing indirect lighting. Although this type of device has the advantage of providing soft light and improving the visibility of the mirror, since the mirror and light guide plate are arranged in an overlapping manner,
There was a problem in that the depth dimension of the sun visor inevitably became large, which placed restrictions on its installation inside the vehicle.

Further, when a light bulb is used as the light source 5, the length in the optical axis direction is long, which causes the sun visor 1 itself to be thick, which poses a major obstacle to making the sun visor 1 thinner.

Therefore, it is an object of the present invention to solve the above-mentioned problems and provide a sun visor for an automobile that has good mirror visibility due to indirect illumination and can be made thinner.

[Means for solving problems]

In order to achieve the above object, the present invention includes a mirror on the surface of a sun visor body, a light guide plate positioned at least on one side of the mirror, and a light source disposed between the sun visor body and the mirror. The end surface on the mirror side of the light guide plate forms a light entrance part, and the back surface is inclined such that the plate thickness decreases from the end on the mirror side to the end opposite to the mirror, and forms a stippled reflection surface, and the back surface forms a stippled reflection surface. is made up of an elongated tube bulb and is arranged parallel to the mirror and the light entrance section.

[Effect]

In the configuration described above, the light emitted from the light source enters the light guide plate from the light entrance part of the light guide plate, hits the stippled reflective surface, is reflected, and is transmitted through the light guide plate, producing soft indirect illumination. becomes. Additionally, the light source is arranged parallel to the mirror, reducing the depth dimension of the sun visor.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 is a cross-sectional view taken along the line shown in FIG. 2, showing an embodiment of an automobile sun visor according to the present invention, and FIG. 2 is a partially cutaway front view of the same sun visor. The sun visor, which is designated as a whole by reference numeral 20 in these figures, includes a sun visor body 2, a mirror 3 disposed at the center of the surface of the sun visor body 2, and a pair of left and right light guide plates 12A disposed on both sides of the mirror 3, respectively. 12
B, and light sources 5 and the like arranged in pairs corresponding to each of the light guide plates 12A and 12B.

The sun visor main body 2 is integrally formed of plastic or the like, and both ends thereof are bent forward, and the light guide plates 12A, 12B are attached to the bent portions 13.
are placed respectively.

Each of the light guide plates 12A, 12B is formed of acrylic resin or the like into a substantially wedge shape, and the thick side end surface 14 is in contact with the side end surface of the mirror 3, and the side end surface 14
A protrusion 15 that protrudes to the rear of the mirror 3 is integrally provided on the mirror 3, and the tip surfaces thereof serve as light entrance portions 16A and 16B consisting of arcuate concave portions. Also,
The back surface of each light guide plate 12A, 12B is formed with a large number of stipples 17 consisting of small V-shaped recesses, thereby forming a stippled reflective surface, and furthermore, a diffusion sheet 18 is attached to the front surface. As a result, the stipple 1
7 is prevented from being seen from the front.

The light source 5 consists of an elongated tube bulb, and the light entrance portions 16A, 16B of the light guide plates 12A, 12B.
The optical axis corresponds to the mirror 3 and the light entrance part 16A,
It is arranged on the back side of the mirror 3 so as to be parallel to the mirror 16B. In this case, the light source 5 is attached to a socket 25, and the socket 25 is fixed inside the sun visor body 2 with two setscrews 19 via a mounting plate 21.

Note that 22 is the code of the light source 5.

In the sun visor 20 having such a configuration, most of the light emitted from each light source 5 enters the light guide plates 12A, 12B from the light entrance portions 16A, 16B, hits the dots 17, and is reflected. The soft light is emitted forward from the surfaces of the light guide plates 12A and 12B to indirectly illuminate the face. Therefore,
Compared to the sun visor using the conventional lens 6 shown in FIGS. 4 and 5, there is less glare and the mirror 3 can be easily recognized. Further, since the light guide plates 12A and 12B are arranged on both sides of the mirror 3 and the face is illuminated from both sides, the illuminance is sufficient and there is no uneven illumination, and the face can be effectively illuminated. Furthermore, mirror 3
Since the light guide plates 12A and 12B are arranged on both sides of the sun visor 20 and the light source 5 is arranged parallel to the mirror 3, the sun visor 20 can be made thinner.

FIG. 3 is a sectional view showing another embodiment of the present invention.

In this embodiment, the shape of the sun visor body 2 is changed,
Both ends of the surface are recessed from the center of the surface to form storage recesses 30A and 30B in which the light source 5 and light guide plates 12A and 12B are stored, and the other configurations are substantially the same as those of the above embodiment.

Note that the present invention has light guide plates 12 on both sides of the mirror 3.
Although A and 12B are arranged in parallel, they may be arranged in parallel only on one side when applied to a small sun visor.

[Effect of idea]

As described above, the automotive sun visor according to the present invention has a mirror and a light guide plate arranged in parallel on the sun visor body, and the light emitted from the light source and incident through the light entrance part of the light guide plate is reflected by the stippled reflective surface of the light guide plate. Since the light is reflected from the surface and emitted forward from the surface, indirect illumination with soft light can be obtained and dazzling light can be prevented.
The visibility of the mirror can be improved. In addition, since the light guide plate is placed parallel to the mirror and the light source is placed parallel to the mirror, the sun visor can be made thinner, reducing restrictions on installation inside the car, and other practical effects. It's very large.

[Brief explanation of the drawing]

Fig. 1 is a sectional view taken along the line shown in Fig. 2, which shows an embodiment of an automobile sun visor according to the present invention, Fig. 2 is a partially cutaway front view of the same sun visor, and Fig. 3 shows another embodiment of the present invention. 4 is a perspective view of a conventional sun visor, and FIG. 5 is a sectional view taken along the line of FIG. 4. 2... Sun visor body, 3... Mirror, 5...
Light source, 12A, 12B...Light guide plate, 16A, 16
B...Light entrance part, 17...Stippling, 18...Diffusion sheet.

Claims (1)

[Scope of utility model registration request] A mirror is disposed on the surface of the sun visor body, a light guide plate is disposed on at least one side of the mirror, a light source is disposed between the sun visor body and the mirror, and an end surface of the light guide plate on the mirror side is arranged. The back surface is inclined so that the plate thickness decreases from the mirror side end to the anti-mirror side end, and forms a stippled reflective surface, and the light source is a long and thin tube bulb that connects the mirror and the input. A sun visor for an automobile, characterized in that it is arranged parallel to a light section.