JPS59226381A - 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 signal light, and relates to a device using a light emitting diode (LED) rung group as a light source.

[Technical background of the invention]

Figure 1 shows the interior structure of a conventional traffic light.
2 is a light bulb light W using a filament, 2 is a reflector placed on the side of light source 1, 3 is a light bulb colored red or yellow placed in front of light #1. It is a scrap-colored lens power bar.

However, the light bulb light U as above! +! 1 is so, ■ Life is usually 1,500 to 3,000 hours.
There are problems such as the short length and high power consumption.

On the other hand, a traffic signal light using a group of LED lamps in place of the light bulb light source has been proposed. That is, as shown in Fig. 2, this traffic signal light is provided with an LED lamp installation board 22 inside the No. 6 envelope 2, and on this board, a large number of LED lamps for emitting light of the same color (for example, red) are installed. An LED lamp 23 is installed, and a light filter 24 is installed in front of the LED lamp 2311 at the front of the signal light. :? It's L.

In addition, J = = self, lri 41Q 2213, multi 1i
M NOAH 7701.1- The back side has holes and a wiring pattern is formed on the back side. The valley lamp 23 has its pole lead 1b inserted into the hole and connected to the wiring and wire by soldering.

Further, each LET) lamp 23 described above is constructed as shown in FIG. That is, 31 and 32 are lead frames formed by processing Cu or Fe-based metal plates, and one lead frame 3'; 6M I
III VCGap, GaAsp, GaAt
LED chip 33 such as As? :”fil+,
The electrode of the pellet of LJD Chizzo 33 and the other lead frame 32 are connected by a fine wire 34 made of gold such as Au.Then, the lead frame 37, The distal end of 32 is molded with a resin 35 such as transparent epoxy resin, and serves as a lead frame, and the base end of 31 and 32 serves as an electrode board 36.

Further, the lamps 23 are connected to each other in a circuit such that they can be driven to emit light by, for example, a parallel current power source. That is, as shown in FIG. 4, 1 (a plurality of lamps 23 connected in one row [l) and a current limiting resistor R are connected in series so that the respective LEDs are oriented in the same direction. A series lamp group circuit is formed, such as a series lamp! (Multiple sets of f° circuits are connected in parallel (series-parallel) so that the LEDs of the LED lamp array are all in the same direction.Alternatively, in the analogy of multiple series Lanzo t++-circuits, one half is M u in parallel (anti-parallel) so that the force directions are opposite to each other
6. I also want to be killed.

[Problems with background technology]

By the way, traffic signal lights using LED lamp groups such as those mentioned above generally have a large light-emitting display surface, and the LED lamps are large.
The directivity of the light output of the amplifier itself, I+:, is generally narrow, so
Large light emitting display i7i+ Invention In order to display a display so that the unevenness of the brightness is not noticeable, it is necessary to arrange a very large number of LED shims at a high density. Therefore, there are problems such as heat generation caused by the light emission of the LED Lanzo group, and the power consumption increases due to the use of a large number of LED lamps.

[Objective of the Invention J The present invention has been made in view of the above-mentioned problems, and has a light emitting display surface that is considerably larger than that of the lamp light source, and uses a relatively small number of lamp light sources. A relatively large luminescent display surface can be displayed with luminescence so that unevenness in brightness is not noticeable, reducing heat generation and power consumption due to lamp clumps.
) provides a light emitting display device 4.

[Summary of the Invention 4J That is, the light emitting display device 1'1 of the present invention includes a light emitting dimade lamp attached to a substrate, a reflector having a reflective surface on the side of the lamp attached to the substrate, and a light emitting display device 1'1 of the present invention. : J'j5 is characterized by a concave lens arranged in a transverse position, and 1) a convex lens arranged in a transverse position in 11 directions.

[Embodiments of the invention]

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

In the road traffic signal shown in Fig. 5, 5 is a red signal light, 52 is II"r, a color point diagonal signal light,
53 is a signal light for lighting in green.

Each of the signal lights 51, 52, and 5.9 is provided with a plurality of corresponding red, yellow, and green LED lamps (described later) arranged in a generally circular shape when viewed from the front. A convex lens 54 is disposed in front of each lamp, as will be described later.

That is, each of the signal lights sj, s2. Inside the s3, as shown in FIG.
The attachment of the reflector 65 having the four parts 64 of the iMI to the substrate 6) is identified, for example, by caulking (66 is the caulking part). In the four parts 64 of the reflector 65, a concave lens 67 is disposed in a position crossing the front of the lamp 62, and furthermore, the convex lens 68 is disposed in a position crossing the front of the lamp 62, and the peripheral edge of each is held by the reflector 65. ing.

In addition, each of the Sougetsu lamps 51, 52, and 53 has a nine-no-zuruta 55 attached to the front part of the respective envelope, thereby making each of the LED lamps 62, etc. waterproof. .

In addition, the front 1f1-+ each LED Lanzoro 2 is connected, for example, to the wiring pattern formed at the lamp +1y side of the board 61 by soldering its f[i, pole 'J-'. VC phase y7. The 62 groups of LED rungs used as the light source in the 4 lamp are filament type '1-C bulb light iF. , has less gravity compared to i,
Kotobuki eggplants have an extremely long shelf life (approximately 100,000 hours), so they cannot be used semi-permanently. Then, the light emitting output of each of the LEf) lamps 62 is reflected from the ih-tangential and light reflecting surfaces 63 and enters the concave lens 67, where the direction is diffused and the light further enters the convex lens 68 and becomes parallel light. The two lenses 67 and 68 have a light magnification effect. Therefore, the light emitting display can be used with a large area light emitting display (convex lens 68) compared to the size of the Lang light source. Since several pairs of lamps 62 and a pair of concave-convex lenses 67 and 68 are disposed close to each other and facing the signal lamp light emitting display surface, they occupy a relatively large area. OJ's platform enables OJ to display light-emitting displays on the front of signal lights in such a way that uneven brightness is not noticeable.
Since a relatively small number of lamps are used compared to the size of the light emitting display surface, the group of lamps used generates little heat, so there are almost no problems due to heat generation, and power consumption is also low.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and can be used not only for various IEi% lights such as air traffic control lights, but also for indicator lights for other purposes.

〔Effect of the invention〕

As described above, the light emitting display device N of the present invention can provide a much larger light emitting display surface than a Lang light source, and can brighten a relatively large light emitting display surface using a relatively small number of lamp light sources. It is possible to display luminescence so that unevenness is not noticeable, and the lamp light source group can reduce heat generation and paralyze consumption.
(Suitable for use in r: No. kJ, etc.)

[Brief explanation of the drawing]

Figure 1 is a configuration explanatory diagram showing the conventional traffic (rl~composition diagram showing the M light, Figure 2 is the same (conventional traffic) 11) traffic light, Figure 3 is a configuration explanatory diagram showing the LED lamp in Figure 2. j Extracted and not shown (II! Figure, 2)) 4 Figure r, i 8? ＞L in Figure 2
ED lamp! -1411 of the circuit connection of 1T, Figure 5 is a circuit diagram showing an example of the use of the light emitting display device ζ1 according to the invention; The figure shows an embodiment of the device of the present invention (it is a cross-sectional view). 6)...Substrate, 62...J, ED convex lens 63...
Light reflecting surface, 65... Reflector, 67... Concave lens, 6
8...Convex lens. f+j? 2Jt 2 sheets 114 people Patent attorney Suzue
Takehiko Figure 1 Figure 2 Diagram A Figure 3 Figure 4 Figure 5 Figure 6

Claims (2)

[Claims] (1) A substrate, a light-emitting diode lamp attached to this substrate, a reflector mounted on the substrate with a light emission surface on the side of the lamp, and a posture that crosses the front of the rung. A concave lens arranged in a direction, and a convex lens arranged in a position crossing the front of this concave lens, and a supporting tool 1ji.
i Light emitting display device consisting of L ^, 0 (2) The light emitting display length i+'<t of the light emitting display length i+'< as defined in claim 1 above is (ij) each facing the signal moon light display surface within the lamp envelope. Display devices h゛0 (: ri 1iiJ plural f) should be disposed close to each other.
17. Each substrate and each reflector of the 10-dimensional optical display device are formed integrally! 1. +ii J Notes kr Vf Scope of request The other item mentioned in item 2 is an optical display device;・Io