JPH0659145U - Resin molding with light-emitting function - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a rear lamp of a car with a stop lamp function. [Structure] A light emitting unit 4 is provided in a part of the transparent resin molded body 2.
Are buried in one. In this light emitting unit 4, the LED chip 6 is housed in a case 5 whose inner surface is a reflecting surface, and a lens 7 is arranged in front of the LED chip 6,
Further, the lead wire 8 from the LED chip 6 is led out to the outside of the case 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a resin molded body such as a rear window and a lamp case of an automobile.

[0002]

[Prior art]

 Japanese Unexamined Patent Publication (Kokai) No. 57-74237 discloses a proposal regarding a rear window glass of an automobile in which a stop lamp that lights up in association with a brake operation is attached to an upper side portion. In this prior art, as shown in FIG. 4, a case 22 accommodating an LED chip 20 and a lens 21 is directly attached to an inner surface of a rear window glass 23 of an automobile.

In such a structure, since the LED chip 20 is housed in the case 22, when the size of the LED chip 20 is increased as a whole to hinder the rear view, or when the LED chip 20 is attached to a curved window glass, the case itself is aligned with the glass. Since the glass must be curved and the degree of curvature of the glass differs depending on the vehicle model, the applicable vehicle model is limited.

Therefore, the applicant of the present invention has previously proposed, as Japanese Utility Model Laid-Open No. 4-106043, an LED chip integrally embedded in a resin molded body to form a stop lamp having a predetermined shape, and this stop lamp is provided on the inner surface of the rear window glass. I am making a proposal to install it.

[0005]

[Problems to be solved by the device]

 By embedding the LED chip integrally in the resin molding as described above, the shape of the stop lamp can be easily adapted to the curved shape of the rear window glass, and the amount of the stop lamp protruding from the rear window glass can be suppressed. However, since the light emitted from the stop lamp passes through the rear window glass and goes out to the rear, it tends to be reflected or absorbed by the glass and the amount of light tends to be insufficient. Even if the amount of protrusion of the stop lamp can be reduced, it cannot be reduced to zero, and it takes time and effort to attach it to the rear windshield.

[0006]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a transparent resin molded body with a light projecting function by integrally embedding a light emitting unit including an LED chip in a part of a plate-shaped transparent resin molded body. I did it.

[0007]

[Action]

 A light emitting unit including an LED chip is set in a cavity of an injection mold, and then a resin material is injected into the cavity to obtain a transparent resin molded body.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a schematic rear view of an automobile to which the resin molding according to the present invention is applied as a rear window, FIG. 2 is an enlarged cross-sectional view of a main portion of the resin molding, and FIG. 3 is for molding the resin molding. FIG. 3 is a cross-sectional view of the injection molding device of FIG.

The rear window of the automobile 1 is made of a high-strength transparent resin molding 2 such as polycarbonate. This transparent resin molding 2 has a resin molding 3 formed on the periphery by an injection molding method such as encaps. The light emitting unit 4 is integrally embedded in a part of the transparent resin molded body 2.

In the light emitting unit 4, the LED chip 6 is housed in a case 5 whose inner surface is a reflection surface, a lens 7 is arranged in front of the LED chip 6, and a lead wire 8 from the LED chip 6 is provided in the case 5. It is led out. As the light emitting unit 4, the LED chip 6 may be integrally embedded in a transparent resin molded body, and a diffuser plate may be arranged instead of the lens 7.

In order to mold the above-mentioned transparent resin molded body 2, as shown in FIG. 3, the light emitting unit 4 is set in one of the fixed mold 11 and the movable mold 12 of the injection molding apparatus 10, and then the movable mold 11 and the movable mold 12 are moved. The mold 12 is closed, and a resin material such as polycarbonate is injected from the nozzle 13 into the plate-shaped cavity C formed between the two. As a result, a resin molding having a light projecting function as shown in FIG. 2 is obtained.

Although the resin molded body applied to the rear window of an automobile is shown in the embodiment, the resin molded body of the present invention may be applied to a case such as a brake lamp or a direction indicator. .

[0013]

[Effect of device]

 As described above, according to the present invention, a light emitting unit including an LED chip is integrally embedded in a part of a resin molded body used as a windshield, a lamp case, or the like. The amount of protrusion of the light emitting unit can be set to zero or extremely small, and since the thickness between the light emitting unit and the surface of the resin molding is thin, there is little light absorbed by the resin molding and a sufficient amount of light is emitted. It can be projected. Further, since the light emitting unit is embedded in the resin molded body at the same time when the resin molded body is molded, the light emitting unit is not required to be attached.

[Brief description of drawings]

FIG. 1 is a schematic rear view of an automobile to which a resin molding according to the present invention is applied as a rear window.

FIG. 2 is an enlarged sectional view of an essential part of the resin molding.

FIG. 3 is a cross-sectional view of an injection molding apparatus for molding the resin molded body.

FIG. 4 is a sectional view showing a conventional structure.

[Explanation of symbols]

2 ... Transparent resin molding, 4 ... Light emitting unit, 6 ... LED chip, 7 ... Lens, 10 ... Injection molding apparatus.

Claims (1)

[Scope of utility model registration request] 1. LE in a part of a plate-shaped transparent resin molding
A resin molded body having a light projecting function, wherein a light emitting unit including a D chip is integrally embedded.