JP2541471Y2 - Display plate - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a garnish which is a decorative part around an automobile and a display plate used in various other fields.

[0002]

2. Description of the Related Art A display plate of this type is a plate with an illuminating device capable of sufficiently exhibiting a decorative effect not only in the daytime but also in the nighttime in recent years, instead of a conventional sheet metal stamped plate. Has been awarded.

[0003] A plate with a lighting device is also used, for example, for name display or decoration around an automobile, because of its characteristics, it has a structure that is as thin as possible, and when lit, it covers the entire surface of the plate. It is required to have uniform illuminance. In order to respond to these demands, the present inventors first used a prism plate, arranged a lamp so as to enter light in a direction perpendicular to the thickness thereof, and reflected the light on the light reflection layer on the back surface of the prism plate. A display plate has been proposed in which emitted light is emitted from the surface of the prism plate and emitted through a half mirror.

FIGS. 6 and 7 show the structure of this display plate.
More specifically, a lamp 106 is provided in the fitting concave portion of the prism plate 105, and the light of the lamp 106 is reflected by the light reflection layer 107 on the back surface of the prism plate 105. The light is emitted toward the transparent substrate 103 on which a half mirror is formed by vapor deposition.
The light reflection layer 107 on the back surface of the prism plate 105 is formed in a dot shape, and the diameter and the number are changed as the distance from the position of the lamp 106 is increased so that the layer density per unit area (the number of dots per unit area) is increased. Have been. As a result, the light emitted from the lamp 106 is reflected as the light travels through the prism plate 105, and is diffused.
4, the light is emitted with uniform illuminance over the entire surface. The heat generated from the lamp 106 is
5 to the lid 1 from the heat sink 108 serving as a reflector attached to the rear
09 to the main body 101 and diffuse to the outside to prevent each part from becoming abnormally high temperature.

[0005]

With the proposed display plate, the intended purpose of uniformly dispersing the radiated light on the surface of the plate when the lamp is lit is achieved, but the prism plate is not used. Dot light reflection layer on the back,
It is still not enough to simply form the light source from sparse to dense as the distance from the position of the light source increases, to obtain a completely uniform illuminance over the entire surface of the plate.
Only the portion around the light source tends to shine brighter than others. This is because not only does the radiated light from the lamp enter from the edge portion (end face) of the prism in the direction perpendicular to the thickness thereof, but also in the direction parallel to the thickness of the prism, that is, the light coming to the surface side of the plate. Is reflected and radiated toward the diffusion / combination filter. On the other hand, the heat generated from the lamp is not completely radiated only by the heat radiating plate which is also used as the reflecting plate, and in some cases, a situation may occur in which the diffusion / filter and other members are burned.

Therefore, in the present invention, the structure around the light source of the above-mentioned conventional display plate is further improved to obtain a completely uniform illuminance over the entire surface of the plate and to generate light from the lamp. It is an object of the present invention to provide a display plate capable of conducting and dissipating heat to prevent an accident due to heat beforehand.

[0007]

According to the present invention, as a means for achieving the above object, a transparent substrate provided with a metallized plating film is attached to the transparent substrate via a diffusion / color filter. Prism plate, a lamp which is housed in a cutout recess formed in the prism plate, and which receives light in a direction orthogonal to the thickness of the prism plate, and has a higher density on the back surface of the prism plate as the distance from the lamp position increases. In a display plate provided with a light reflecting layer distributed in a manner as described above and a radiating plate which also serves as a reflecting plate attached to the rear of the prism plate, conduction and heat dissipation are performed so as to cover the front surface of the cutout recess of the prism plate containing the lamp. A display plate having a lamp cover plate also serving as light reflection, and a light buffering member for adjusting a light amount interposed between the lamp cover plate and the lamp. It is intended to propose. The light reflection layer also proposes a display plate formed on the back surface of the prism plate except for the periphery of the cutout recess of the prism plate containing the lamp.

[0008]

The lamp cover plate disposed so as to cover the front surface of the cut-out recess of the prism plate improves the reflection of light from the lamp, and the light buffering member appropriately blocks light, and the two are mutually connected. Acts to emit light uniformly. At the same time, the lamp cover plate completely dissipates the heat generated from the lamp in cooperation with the radiator plate also serving as the reflector plate. Also,
The light reflection layer on the back surface of the prism plate is formed so as to escape from the periphery of the lamp, thereby adjusting the balance of light emission.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a display plate according to the present invention will be described below with reference to the drawings. 1 and 2 show a horizontal sectional view and a vertical sectional view, respectively, of a display plate. Reference numeral 1 denotes a main body of the display plate. At an appropriate position on the main body 1, a mounting portion 2
A transparent substrate 3 made of acrylic resin or the like is mounted on the mounting portion 2. The rear surface of the transparent substrate 3 is provided with a metal vapor-deposited plating film 3a and has a half mirror shape. In the rear part of the transparent substrate 3, a diffusion / color filter-4 is interposed.
The prism plate 5 is attached. A notch recess 5a is formed at an appropriate position of the prism plate 5, and the lamp 6 is housed in the notch recess 5a. A light reflection layer 7 is provided on the back surface of the prism plate 5.
Is formed. At the rear of the prism plate 5, a heat radiating plate 8 which is also used as a reflecting plate is attached.

Diffusion / filter-4 at rear of transparent substrate 3
Has a function of diffusing light with a matte surface, and has a desired color to function as a color filter. The prism plate 5 is a transparent plate made of synthetic resin such as acrylic resin or glass or glass, receives the light of the lamp 6 from the end face of the cutout recess 5a, and radiates it to the transparent substrate 3 via the diffusion / color filter-4. It is to make it. As the lamp 6, a thin rod-shaped incandescent lamp is used, but various lamps can be used according to other uses. As shown in FIG. 3, the light reflection layer 7 forms dots (or lines) on the back surface of the prism plate 5 by screen printing with ink having a high light reflectance, and is spaced apart from the position of the lamp 6. , Ie, by changing the diameter and the number of layers, the layer density per unit area (the number of dots per unit area) is distributed so as to increase, and the radiated light from the lamp 6 travels in the prism plate 5. As the light is diffused and diffused, the light is radiated with uniform illuminance toward the diffusion / color filter-4. The heat radiating plate 8, which also serves as a reflecting plate, which covers the entire rear part of the prism plate 5, dissipates heat generated from the lamp 6, and is a U-shaped plate-like body having a window 8 a at a position where the lamp 6 is disposed. The surface is made white so as to reflect light from the lamp 6 efficiently, and also serves as a reflector.

A case 9 having a window 9a at the same position as the window 8a of the heat radiating plate 8 is provided at the rear of the heat radiating plate 8 also serving as a reflecting plate.
Is attached, and the back cover 10 is located at the rear. The lamp 6 is attached to the back cover 10 and is inserted into the cutout recess 5a of the prism plate 5 from the rear of the case 9 through the windows 9a and 8a of the case 9 and the heat radiating plate 8 serving as a reflector. Face. When replacing lamp 6, back cover-1
This is done by removing 0 from case 9. Ramp 6 lamp
The lead line 11 is connected to a lamp lighting circuit (not shown).

A feature of the present invention is that a lamp cover plate 12 is provided so as to conduct and dissipate heat and reflect light so as to cover the front surface of the cutout recess 5a of the prism plate 5 accommodating the lamp 6. In addition, a light buffering member 13 for adjusting the amount of light is provided between the lamp cover plate 12 and the lamp 6.

As shown in FIG. 4, the lamp cover plate 12 is made of a metal piece having a U-shaped cross section disposed in front of the lamp 6 so as to cover only the area of the cutout recess 5a of the prism plate 5. The material is preferably an aluminum alloy plate which has good thermal conductivity, is easy to process, and is inexpensive. Inside surface 12a of lamp cover plate 12, that is, the side facing lamp 6
Is white for better light reflection.

The light buffering member 13 is a light absorbing spacer member interposed to prevent only a portion centered on the light source from shining brighter than the other. A black plate made of a synthetic resin having a substantially U-shaped cross section and substantially the same shape as that of the lamp cover plate 12 is used.
Is inserted inside. When the light buffering member 13 is disposed so as to completely cover the range of the cutout concave portion 5a of the prism plate 5, the light is blocked, and the portion around the light source becomes rather darker than the others. Therefore, as shown in FIG. 4, the illuminance is recovered by drilling an oval through-hole 13a, so-called a hollow state, and the light amount is adjusted. The hollow shape of the light buffering member 13 is not limited to an elliptical shape, and a desired shape can be adopted. For example, FIG.
3b, and this shape is the best in optical theory.

The lamp cover plate 12 is combined with the light buffering member 13 and disposed at the rear of the diffusion / color filter 4 so as to cover the cutout recess 5a of the prism plate 5 in which the lamp 6 is housed. . In this case, the white surface 12a inside the lamp cover plate 12 facing the lamp 6 is
Only the portion of the through hole 13a (13b) of the light buffering member 13 is exposed, and the periphery thereof is masked by the black light buffering member 13. Therefore, the amount of light is adjusted by the light buffering member 13, so that only the portion centered on the light source does not shine brighter than others.

On the other hand, since the lamp cover plate 12 made of a metal material having good heat conductivity covers the front of the lamp 6, the lamp cover plate 12 interacts with the heat radiating plate 8 at the rear of the prism plate 5 and The heat generated from 6 is dissipated to the outside from the back cover 10 by conduction heat radiation, thereby preventing each part from becoming abnormally high temperature.

Next, the feature of the present invention is that the light reflecting layer 7 distributed on the rear surface of the prism plate 5 so as to increase in density as the distance from the position of the lamp 6 increases, as shown in FIG. This is a point that the prism plate 5 in which the lamp 6 is housed is not formed in the peripheral portion 5b of the cutout concave portion 5a but is formed excluding this portion. As described above, by providing the so-called escape around the lamp to form the light reflecting layer 7, the balance of light emission is adjusted, and only the portion centered on the light source is prevented from shining brighter than the other. You.

The display plate having the above-described structure is designed such that, in the daytime, when external light is incident on the transparent substrate 3, which has been formed into a half mirror by applying the metal deposition plating film 3a. Shining, reflected. On the other hand, at night, when the lamp lighting circuit is turned on, the lamp 6 is turned on, and the radiated light of the lamp 6 travels inside the prism plate 5 from the end face of the cutout recess 5a of the prism plate 5, and the prism plate 5 diffusely reflects. The light is reflected by the light reflection layer 7 on the back surface of the prism 5 and radiates from the surface of the prism plate 5 as radiation having uniform illuminance over the entire surface.
The light leaked from between the dots, which are the light reflecting layers 7, is reflected by the heat radiating plate 8 serving also as a reflecting plate and radiated from the surface of the prism plate 5. This radiated light is radiated from the transparent substrate 3 to the outside through the diffused color filter 4, and is visually observed as a brilliant display plate. In addition, the metal deposition plating film 3 of the transparent substrate 3
If "a" is composed of characters and an opaque paint is applied to the other portions, the name and the like can be seen in a raised state.

The display plate according to the present invention includes a transparent substrate provided with a metal vapor-deposited plating film, a prism plate attached to the transparent substrate via a diffusion / color filter, and a prism plate attached to the transparent substrate. A lamp that is housed in the formed notch recess and receives light in a direction perpendicular to the thickness of the prism plate, and a light reflection layer distributed on the back surface of the prism plate so as to increase in density as the distance from the lamp increases. A display plate including a reflector plate and a heat radiating plate attached to the rear of the prism plate.
A lamp cover plate that combines conduction and heat dissipation and light reflection is provided so as to cover the front surface of the cutout recess of the prism plate containing the lamp, and between the lamp cover plate and the lamp. Since the light buffer member for adjusting the light quantity is provided, the lamp cover plate improves the reflection of the light from the lamp, and the light buffer member appropriately blocks the light.
Only the portion centered on the light source does not shine brighter than others. In addition, the lamp cover plate completely dissipates the heat generated from the lamp in cooperation with the heat radiating plate which also functions as the reflecting plate, so that the conventional display plate in which the diffuser filter and other members are burned out. Can be prevented beforehand. Further, since the light reflecting layer is formed on the back surface of the prism plate except for the peripheral portion of the cutout recess of the prism plate containing the lamp, the lamp cover plate and the light buffering member interact with each other, The balance of the light emission is adjusted so that the illumination is completely uniform over the entire area of the plate.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a display plate showing one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the same.

FIG. 3 is a plan view of an essential part of the same.

FIG. 4 is a perspective view showing an example of a lamp cover plate and a light buffer member.

FIG. 5 is a perspective view showing another example of a lamp cover plate and a light buffer member.

FIG. 6 is a cross-sectional view of a conventional display plate.

FIG. 7 is a plan view of an essential part of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Mounting part 3 Transparent substrate 4 Diffusion / color filter 5 Prism plate 5a Notch concave part 5b Peripheral part 6 Lamp 7 Light reflection layer 8 Heat sink which also serves as a reflection plate 12 Lamp cover plate 13 Light buffer member 13a Through hole 13b Through hole

Claims (2)

(57) [Scope of request for utility model registration] 1. A transparent substrate provided with a metallized plating film,
A prism plate attached to the transparent substrate via a diffusion / color filter, a lamp housed in a cutout recess formed in the prism plate and entering light in a direction orthogonal to the thickness of the prism plate, and a back surface of the prism plate The lamp was housed in a display plate having a light reflecting layer distributed so as to increase in density as the distance from the position of the lamp was increased, and a heat sink serving also as a reflecting plate attached to the rear of the prism plate. A lamp cover plate for both conduction and heat dissipation and light reflection is provided so as to cover the front surface of the cutout recess of the prism plate, and a light buffer for adjusting the light amount is provided between the lamp cover plate and the lamp. Display plate characterized by interposing members
G. 2. The display plate according to claim 1, wherein the light reflecting layer is formed on the back surface of the prism plate except for the peripheral portion of the notch recess of the prism plate containing the lamp.