JPS59206876A - Luminous display - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a light emitting display device used, for example, in a traffic light signal light, and particularly to a light emitting display device that uses a light emitting diode (
This invention relates to a light emitting display device using a group of LED (LED) lamps.

[Technical background of the invention]

A traffic signal light using a group of LED lamps as a light emitting source has conventionally been constructed as shown in FIG. 1, for example. That is, 1 is a signal light envelope, and inside it is arranged an LED mounting board 3, on which a group of LED lights each emitting the same color (for example, red) is mounted in a high density. This substrate 3 is fixed to the envelope 1 with screws 5 via, for example, a cylindrical support 4. Reference numeral 6 denotes a light diffusion filter having a shape surrounding the front of the two groups of LED lamps, and this is attached to the front part of the envelope 1. A rubber 7 is provided in a ring shape along the contact area between the filter 6 and the envelope 1, and is used to tightly attach the filter 6 to the envelope 1 and prevent water from entering the contact area from the outside. This is to prevent

On the other hand, the substrate 3 has a large number of holes for attaching run leads, and a wiring pattern is formed on the back surface. The electrode lead of each rung 2 is inserted into the mounting hole and connected to the wiring pattern by soldering. Further, the two groups of lamps are circuit-connected so that they can be driven to emit light using, for example, a commercial AC power source. That is, each L
A series lamp group is formed by connecting a plurality of LED lamps 2 in series so that the LEDs are oriented in the same direction, and a plurality of such series lamp groups are connected in such a way that the LEDs in the LED lamp array are all oriented in the same direction. They are connected in parallel (series-parallel), or in parallel (anti-parallel) so that the I and EDO directions of some of the LED lamp rows and the LEDO directions of the remaining LED rows U/F are opposite to each other. It is connected to the.

Incidentally, each of the above-mentioned IJD run-runs is configured as shown in FIG. 2, for example. That is, 21 and 22 are respectively lead frames formed by processing Cu + F@X metal plates, and a gap is formed on the end surface of one lead frame 21.
, GaAsp, GaAtAs and other LED chips,
The lead frame 23 is fixed with conductive epoxy resin or the like, and the electrode of the pellet of the LED chip 23 and the other lead frame 22 are bonded together.
and are connected by a thin metal wire 24 made of Au or the like. The leading ends of the lead frames 21 and 22 are molded with resin 25 such as transparent epoxy resin, and the base ends of the lead frames 21 and 22 serve as electrode leads 26.

[Problems in the Background Art] By the way, in the above-mentioned signal lights, two groups of high-intensity LED lamps with sharp light emission output directionality are often used. When attaching the LED lamp 2, for example, as shown in Figure 3,
If a portion of the group 2' is mounted in a position that does not face substantially straight toward the light emitting display surface of the signal light, uneven brightness of the light emitting display surface becomes noticeable. Therefore, in order to make the brightness of the light emitting display surface uniform to #1, each LED run f
2 must be mounted almost perpendicularly to the board 3, but if a part of the lamp group 2 is tilted due to an external impact etc. after the mounting is installed, unevenness in the brightness of the light emitting display surface will become noticeable. , the appearance of the light emitting display surface becomes poor.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and is based on an LED mounted on a board. The present invention provides a light-emitting display device in which each lamp of a lamp group can be held in a posture substantially perpendicular to the substrate, and the brightness of a light-emitting display surface in front of the lamp group can be made very uniform to improve its appearance. .

[Summary of the invention]

That is, in the light emitting display device of the present invention, a large number of light emitting diode lamps are mounted on a substrate provided inside so as to face the light emitting display surface of the light emitting display device, and each of the light emitting diode lamps is fitted in the middle portion of each of these lamps. This lamp is characterized by a lamp posture holding plate that maintains the posture of each lamp in a state in which the matching holes are fitted.

According to the light-emitting display device, the brightness of the light-emitting display surface can be made uneven by mounting the U/F group almost perpendicularly to the substrate and holding the lamp posture with the lamp posture holding plate. If it is noticeable, the baldness will be uniform and the appearance will be better.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 4 shows one of the signal lights of a traffic signal taken out.Compared to the conventional signal light described above with reference to FIG. The difference is that the lamp posture holding plate 41 is fixed to a rivet 42 via a support 40, but the rest is the same, so the same reference numerals will be given and the explanation thereof will be omitted.

In the lamp position holding plate 41, a fitting hole 43 is formed which is slightly larger than the cross section of the middle part of the resin part of the run f2, as shown in FIG. The board is pushed in from the front side of the second group of lamps so that each fitting hole 43 fits into each jin-f2.
It is attached to. In addition, the lamp posture holding plate 4
1 is made of, for example, a glossy white synthetic resin molded on its surface, and has, for example, a pyramid-shaped reflective protrusion 44 formed between each fitting hole on its outer surface.

Therefore, in the signal light having the above configuration, fif is attached to the board 3.
f Each vertically mounted lamp 2 is fitted into each fitting hole 43 of the lamp attitude holding plate 41 to maintain the lamp attitude. Therefore, the posture of each run f2 is
By designing the light-emitting display surface so that the brightness is almost uniform in a state that is almost perpendicular to
2 does not change its posture, the brightness of the light-emitting display surface is not uneven, and the light-emitting display surface looks good. Moreover, since the lamp posture holding plate 4 has a glossy surface and a reflective protrusion 44, it acts to efficiently reflect the light output from the lamp 2 forward and emit light. This has the advantage of increasing the brightness of the display surface.

Also, with the lamp posture holding plate 41 holding the posture of each rung 2, connect the electrode leads 26 of each lamp 2 to the wiring on the back side of the substrate 3. By attaching the solder 51 to the turn 50, the movement of the lead 26 is restricted during soldering, so that the soldering can be performed reliably.

As described above, by fixing the direction of each rung 2 and giving the lamp posture holding plate 41 a reflective effect, the brightness of the light emitting display surface becomes almost uniform.
In particular, without using the light diffusion colored filter 6, a transparent filter made of glass or epoxy transparent resin may be used. In the light diffusion filter 6, the light is absorbed or internally reflected by the diffusing agent contained in it, so the brightness is slightly impaired, but with a transparent filter, this does not occur, so the light emitting display surface becomes even brighter. It has the advantage of being bright.

Note that the present invention is not limited to the above-mentioned embodiment, and for example, as shown in FIG.
An insulating material (eg, ceramic, resin) 60 may be used in which the lamp position holding plate portion 62 and the upper lamp posture holding plate portion 62 are integrally molded so as to be substantially parallel to each other.

In this case, as shown in FIG. 7, a wiring pattern 50 is formed on the bottom surface of the installation board section 61, and elastic bushings 64 made of, for example, rubber are fitted into each fitting hole 63 of the posture holding plate section 62. When attaching each rung 2, pass through the bushing 64 from the front side of the posture holding plate section 61. To attach the mounting board section 61, insert the electrode lead 26 into the hole, and then solder it to the wiring gloss turn 50. The attached is for connection. Note that 65 is a reflective protrusion.

According to the configuration shown in FIG. 6 above, when attaching the rung 2, there is an advantage that the posture holding plate section 62 guides the lamp posture so that it is almost perpendicular to the mounting board section 61, as well as the above-mentioned In addition, the use of the light emitting display device of the present invention is not limited to traffic signal lights, but can be used in a wide range of applications such as general signal lights and advertising lights.

〔Effect of the invention〕

As described above, according to the light emitting display device of the present invention, each lamp of the LED lamp group attached to the board can be held in an almost perpendicular posture to the board, and the brightness of the light emitting display surface in front of the rung group can be reduced. It is suitable as a light emitting source for traffic signal lights and the like because it can make the light almost uniform and improve its appearance.

9-

[Brief explanation of drawings]

Fig. 1 is a side sectional view showing a conventional traffic signal light, Fig. 2 is a perspective view showing an extracted LED rung in Fig. 1, and Fig. 3 shows a part of the LED lamp group in Fig. 1. FIG. 4 is a side sectional view showing a traffic signal light according to an embodiment of the light emitting display device of the present invention, and FIG. 5 is a side view showing the lamp in a tilted state. FIG. FIG. 6 is a side sectional view showing another embodiment of the present invention, and FIG. 7 is a side sectional view showing the state of the rung posture holding plate and the lamp in FIG. 6. be. 2... LED rung, 3... rung arrangement board, 41
...Lamp posture holding plate, 43...Fitting hole, 61...
- Arrangement board part, 62... Posture holding plate part, 63... Fitting hole. Applicant's agent Patent attorney Takehiko Suzue -18- Figure 46 Figure 6

Claims (1)

[Claims] A large number of light emitting diode lamps are mounted on a board provided inside so as to face the light emitting display surface of the light emitting display device, and each lamp is connected with a fitting hole fitted in the middle part of each lamp. 1. A light emitting display device comprising a rung posture holding plate that maintains the posture.