JPH0632449Y2 - Waterproof structure of display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a waterproof structure of a display device suitable for application to an internally illuminated mark plate of an automobile.

[Prior Art] As an internally-illuminated mark plate attached to a recent automobile, in order to improve visibility and body identification by making the mark part gorgeous, external light (sunlight) is reflected in the daytime. It is known that a so-called half mirror is formed in which the mark part is illuminated from the inside of the case at night by making the mark look metallic. The fifth example of such a mark plate
Referring to the drawings and FIG. 6, 1 is a transparent resin,
A display board made of a transparent material such as smoke resin or glass,
2 is a mark portion (display portion) recessed on the back surface of the display plate 1.
The back surface other than the mark portion 2 is entirely covered with the light shielding film layer 3 of black or the like to form a ground color portion. On the other hand, the metal particle layer 5 is formed on the mark portion 2 by means such as vapor deposition or sputtering. The metal particle layer 5 has a light-transmitting property by forming metal particles such as gold powder with a thin gap (about 300 to 400 Å) with an appropriate gap so that the particles do not contact with each other or overlap each other. . The display plate 1 is fitted and fixed in an opening of a case (not shown) containing the light source 6, and the mark portion 2 is illuminated by the light source 6 at night.

[Problems to be solved by the invention]

By the way, since such a mark plate is exposed to rainwater, it is required that the cord lead-out portion has a waterproof structure and is thin. However, conventionally, there has been a problem that the waterproof performance is low due to a simple structure in which the light source 5 is simply held by the rubber socket and the socket is fitted into the light source insertion hole provided in the case. Further, if they are simply fitted, they will be rattled due to vibration, shock, etc., and rainwater can be more easily infiltrated.

Therefore, the present invention intends to solve the above-mentioned conventional problems and to provide a display device having a simple structure and capable of reliably preventing the intrusion of rainwater even when vibration, impact, etc. are applied. Is.

[Means for solving problems]

The present invention has been made in order to achieve the above object, and includes a case, a display plate having a translucent display portion to close an opening of the case, and a light source disposed in the case. A light source insert provided in the case, the light source being disposed in the case, having a light incident portion on one side surface, and guiding a light from the light source incident from the light incident portion to the display portion. An annular drainage mountain is integrally provided in the hole, a socket made of an elastic material for holding the light source is fitted in the hole, and the case plate is pressed and fixed to the case.

[Action]

In the present invention, the drainage mountain prevents rainwater from entering the case through the light source insertion hole, and the set plate prevents the rattling of the socket.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

FIG. 1 is a sectional view showing an embodiment in which the present invention is applied to an internally-illuminated mark plate, FIG. 2 is a sectional view of a main part of the plate, and FIG. 3 is a sectional view of a cord lead-out portion of a socket. 4 (a) and 4 (b) are a plan view and a sectional view of the set plate. In these drawings, the mark plate 10 is formed by closing the front opening 12 of the case 11 with the display plate 13 and housing and arranging the bulb bulb 14 as a light source and the light guide 15 inside the case. A light entrance portion 16 composed of a semicircular groove is formed on one side surface of the light guide member 15 so as to correspond to the front bulb bulb 14. It is reflected on the front surface side by the stippling 17 formed of a small V-shaped concave portion provided on the back surface,
Is configured to illuminate the display unit 18 from behind. Similar to the conventional device shown in FIGS. 5 and 6, the display portion 18 of the front display panel 13 has a thin metal particle layer (not shown) and has a light-transmitting property. Is covered with a light shielding film layer 19. A V-shaped annular groove 21 for draining is formed on the peripheral edge of the rear surface of the front display plate 13 over the entire circumference thereof.
The drainage mountain 22 protruding from 0 is fitted. The peripheral edge of the display plate 13 is ultrasonically welded to the front surface 20 to prevent rainwater from entering the case 11 through the opening 12.

The light guide 15 has a light entrance portion 16 for reducing light absorption.
The back side is inclined at an appropriate angle by forming the thickest plate at the side edge and gradually decreasing the plate thickness toward the end opposite to the light incident portion 16. . Therefore, the bottom surface of the case 11 is also inclined at the same angle. A light guide fixing boss 24 is integrally projectingly provided at an appropriate place on the inner bottom surface of the case 11, and the boss 24 is used as the light guide 1.
The light guide body 15 is tightly fixed in the case 11 by fitting it into the small hole 25 provided in 5 and caulking the tip to prevent the light guide body 15 from coming off from the small hole 25. A breathing hole 26 is formed on the bottom surface of the case.
Is covered by a sheet 27 (eg, Gore-Tex, trade name) that allows only air to pass and does not allow water to pass.

A light source insertion hole 28 is formed in a side wall of the case 11 facing the light entrance portion 16 of the light guide 15, and a socket 29 for holding the bulb bulb 14 is fitted into the hole 28. It is pressed and fixed by the set plate 30. An irregular step surface 31 is provided inside the light source insertion hole 28, and an overhanging portion 29A provided on the peripheral surface of the socket 29 is pressed against the step surface 31. The waterproof between the light source insertion hole 28 and the socket 29 is provided by a drainage mountain 32 formed by a V-shaped projection provided on the step surface 31.
And a drainage annular groove 33 formed on the surface of the overhanging portion 29A corresponding to the drainage mountain 32. The socket 29 is formed in an elongated block shape by an elastic body such as rubber, and the cords 35a, 35b of the bulb valve 14 are provided at both ends thereof.
A pair of cord lead-out holes 36A, 36B through which the cord is inserted are formed so as to penetrate therethrough. As for the infiltration of rainwater from the cord lead-out holes 36A, 36B, as shown in FIG. 3, drainage mountains 37 integrally projecting on the inner peripheral surface of the holes 36A, 36B are formed on the surfaces of the cords 35a, 35b. It prevents you from biting.

As shown in FIGS. 4 (a) and 4 (b), the set plate 30 has a long hole 39 formed at the center and a pair of screw mounting holes 40a, 40b formed at both ends. Mounting holes 40a, 4
The overhanging portion 29A of the socket 29 is pressed against the step surface 31 by being fixed to the case 11 by the set screws 41A and 41B which are respectively inserted through 0b.

In FIG. 1, reference numeral 44 is a rim.

Thus, according to the mark plate 10 having such a configuration, the drainage crest 32 provided in the light source insertion hole 28 is fitted into the drainage annular groove 33 provided in the socket 29, and the socket 29 is set by the set plate 30. The insertion hole 28
Since it is pressed and fixed to, it is possible to reliably prevent the intrusion of rainwater from the light source insertion hole 28. Further, the socket 29 does not rattle even when subjected to vibration, impact, etc., and there is no fear that a gap will be created between the light source insertion hole 28 and the socket 29.

Although the above-mentioned embodiment shows an example in which the invention is applied to a mark plate, the present invention is not limited to this, and it goes without saying that it can be applied to various display devices.

Further, in the above-mentioned embodiment, the socket 29 is provided with the draining annular groove 33, but since the socket 29 itself is an elastic body, the annular groove 33 is not always required, and the draining mountain 32 is made to be bitten into the socket 29. May be.

[Effect of device]

As described above, according to the waterproof structure of the display device according to the present invention, the drainage mountain provided in the light source insertion hole of the case and the socket for holding the light source made of an elastic material serve to prevent rainwater from the insertion hole. Intrusion can be reliably prevented, and the waterproof performance of the device can be improved.

Also, since the socket is pressed and fixed to the case by the set plate, it does not rattle even if subjected to vibration, shock, etc.
Its practical effects are great, such as its ability to maintain waterproof performance in a stable manner, and its simple structure and easy production.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment in which the present invention is applied to a mark plate, FIG. 2 is a sectional view of a main portion, FIG. 3 is a sectional view of a cord lead-out portion of a socket, and FIG. 4 (a). , (b) are a plan view and a sectional view of the set plate, FIG. 5 is a perspective view of a conventional mark plate, and FIG. 6 is a sectional view taken along line VI-VI of FIG. 10 ... mark plate, 11 ... case, 12 ... opening, 13 ... display plate, 14 ... bulb valve, 15 ...
Light guide, 16 ... Light entrance, 18 ... Display, 28 ... Light source insertion hole, 29 ... Socket, 30 ... Set plate, 32 ...

Claims (1)

[Scope of utility model registration request] 1. A case, a display plate having a light-shielding display section for closing an opening of the case, a light source arranged in the case, and a side surface arranged in the case. A light guide body which has a light incident part and guides the light from the light source incident from the light incident part to the display part; and an annular draining mountain is integrally formed inside the light source insertion hole provided in the case. A waterproof structure for a display device, characterized in that a socket made of an elastic body for holding the light source is fitted into the hole, and is pressed and fixed to the case by a set plate.