JPH0710778U - LED display device - Google Patents

Abstract

(57) [Abstract] [Purpose] By arranging a diffusion layer that scatters or diffuses light on the front surface of the LED, the light from the LED looks like an unbroken line and looks good. is there. [Structure] A plurality of long and narrow light emitting diodes 1 for line display and both longitudinal side surfaces of the plurality of light emitting diodes are serially fixed by an adhesive, and a space is formed on the light emitting surface side of the light emitting diodes. The holding plates 3 and 3'having such a shape and a diffusion layer 5 for scattering and diffusing the light filling the space of the holding plate are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an LED display device in which LEDs (light emitting diodes) are arranged in a row so that no gap is generated between the LEDs when performing line display (for example, level display in audio equipment).

[0002]

[Prior art]

Although there are various types of LEDs, an LED 1 as shown in FIG. 5 has been developed for displaying lines. That is, it is composed of a light emitting portion 1a formed by molding a semiconductor that emits light when energized with an acrylic resin, and a pair of lead wires 1b connected to the semiconductor and led out to the outside from the light emitting portion 1a. In the LED 1, the elongated rectangular top portion 1a ₁ of the light emitting portion 1a is illuminated by the light from the semiconductor and shines.

The LED 1 configured as described above is fixed by soldering a lead wire 1b to a wiring board (not shown) in a column state, and in this state, an opening is made in a panel 2 of an audio device as shown in FIG. The top portion 1a ₁ of the light emitting portion 1a is exposed to the opened window 2a, and the light emitting portion 1a is sequentially illuminated in accordance with the volume level, thereby performing line display.

[0004]

[Problems to be solved by the device]

 By the way, when the above-mentioned LED 1 emits light, since a gap is generated between each LED, continuous line display is not performed and only intermittent display is performed. Therefore, there is a problem that the appearance is not good and the appearance is bad.

The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to dispose a diffusion layer that scatters or diffuses light on the front surface of the LED so that the light emitted from the LED is interrupted. The purpose is to provide a line display device that looks like a single line and looks good.

[0006]

[Means for Solving the Problems]

 The line display device of the present invention is intended to achieve the above-mentioned object. The means is that a plurality of long and narrow light emitting diodes for line display and the longitudinal side surfaces of the light emitting diodes are bonded in series. A holding plate fixed by an agent and having a shape such that a space is formed on the light emitting surface side of the light emitting diode; and a diffusion layer for scattering and diffusing the light filled in the space of the holding plate. It is equipped with.

The plurality of light emitting diodes may be fixed in a plurality of rows by the holder and an intermediate holder interposed between the holders, and a color filter may be provided on the upper surface of the diffusion layer. It is preferable that the holding member and the intermediate holding member are provided with a reflecting surface that reflects light from the light emitting diode.

[0008]

[Action]

 As described above, since the line display device of the present invention is configured as described above, since the light emitted from the LEDs is scattered and diffused by the diffusion layer, the light from each LED is mixed and the joint of each LED is external. It will be invisible. By arranging a plurality of LEDs in a plurality of columns, the brightness of line display can be freely set.

Further, by making the surface of the holding plate for holding the LEDs or the intermediate holding plate to which the LEDs are adhered to be a reflecting surface, the amount of light from the LEDs is increased and the line display is clearly performed. By arranging a color filter on the upper surface of the layer, it is possible to change the light color from the LED and perform line display of a desired color.

[0010]

【Example】

 Next, an embodiment of the line display device according to the present invention will be described with reference to the drawings. 1 and 2 show the first embodiment, 1 is the LED shown in FIG. 5, 3 and 3'are a pair of aluminum holders, and the inner surfaces facing each other are the same as the side surfaces of LED1. In the state where the step portions 3a, 3'of a shape are formed and both side surfaces in the longitudinal direction of the LED 1 are fixed to the step portions 3a, 3a 'with an adhesive, the thickness above the irradiation surface of the LED 1 is Tapered portions 3b and 3b 'which are gradually thinned are formed. Note that, for example, three LEDs 1 are fixed to the holder 3 in series.

Reference numeral 4 denotes a color filter fixed to the upper surfaces of the pair of holding bodies 3 and 3 ′, which is fitted in, for example, a groove formed in the longitudinal direction of the holding bodies 3 and 3 ′. Reference numeral 5 denotes a diffusion layer that scatters and diffuses light obtained by finely crushing transparent glass or silica mixed with resin, and forms the back surface of the color filter 4 and the tapered portions 3b and 3b 'of the holders 3 and 3'. Is filled in the space composed of.

In the LED display device of the present invention thus constructed, the LED 1 is turned on and emits light by connecting a power source to the LED 1 and energizing the LED 1. This light is scattered and diffused by the diffusion layer 5, and then emitted to the outside through the color filter 4. At this time, the light from the LED 1 is reflected by the aluminum holders 3 and 3'and is scattered and diffused by the diffusion layer 5, so that the joint of each LED 1 becomes invisible when passing through the color filter 4, and It becomes a stick of a book and looks good.

In the above-mentioned embodiment, the LEDs 1 are arranged in a line, but in order to perform a brighter display, the LED 1 is constructed as in the second embodiment shown in FIGS. That is, as in the first embodiment, the pair of holders 3 and 3'having the stepped portions 3a and 3a 'for holding the LED 1 are opposed to each other at an angle of about 45 degrees.

Further, the intermediate holding body 6 made of aluminum having stepped portions 6a and 6a ′ similar to the stepped portions 3a and 3a ′ of the holding bodies 3 and 3 ′ formed on a slope of about 45 degrees is used as the holding body 3. , 3 '. Then, for example, one side surface of the three LEDs 1 in the longitudinal direction is adhered to the step portion 3a of the holder 3 and the other side surface is adhered to the step portion 6a of the intermediate holder 6 with an adhesive.

Further, the other three LEDs 1 ′ are bonded to the step portion 3 a ′ of the holder 3 ′ and the step portion 6 a ′ of the intermediate holder 6 in the same manner as described above. By assembling in this way, the pair of holders 3 and 3 ', the two rows of LEDs 1 and 1', and the intermediate holder 6 have an integrated structure. Then, the space formed on the top surfaces of the holders 3 and 3'is filled with the diffusion layer 6 and the color filter 5 is arranged thereon.

In the second embodiment configured as described above, the light emitted from the two rows of LEDs 1, 1 ′ is obtained by connecting the two rows of LEDs 1, 1 ′ with a power source to energize and light them. Are reflected and mixed by the pair of holders 3, 3 ′ and the intermediate holder 6, and then scattered and diffused by the diffusion layer 6.

Therefore, since the joints of the LEDs 1 and 1 ′ in each row are invisible and the display is performed by the light from the LEDs 1 and 1 ′ in the two rows, the brightness is double that in the first embodiment. , It is possible to display more clearly.

In addition, in the above-mentioned embodiment, the case of displaying with the LED 1 in one row and the case of displaying with the LEDs 1, 1 ′ in two rows have been described, but the LEDs are limited to one row and two rows. The number of LEDs in one row is not limited to the above, but it is also included in the present invention to configure a plurality of rows according to the required brightness. Also, the number of LEDs in one row is as long as necessary. The holders 3 and 3'and the intermediate holder 6 can be freely selected.

[0019]

[Effect of device]

 In the present invention, as described above, the light emitted from the LEDs is scattered and diffused by the diffusion layer, so that the lights from the LEDs are mixed and the joints of the LEDs are invisible to the outside. The light from the LED looks like an unbroken line and looks good.

Further, by arranging a plurality of LEDs in a plurality of rows, the brightness of line display can be freely set, and by using a holding plate or an intermediate holding plate reflecting surface for holding the LEDs, The amount of light increases and the line display is clearly displayed. Furthermore, by arranging a color filter on the upper surface of the diffusion layer, the color of light from the LED can be changed to perform line display of the desired color. Is to have.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an LED display device according to the present invention.

FIG. 2 is a sectional view of the same.

FIG. 3 is a perspective view showing another embodiment of the present invention.

FIG. 4 is a sectional view of the same.

FIG. 5 is a perspective view of an LED.

FIG. 6 is a front view of a conventional example in which line display is performed by using the above LED.

[Explanation of symbols]

 1 LED (light emitting diode) 3, 3'holding plate 3a, 3a 'stepped portion 4 color filter 5 diffusion layer 6 intermediate holding plate 6a, 6a' stepped portion

Claims (4)

[Scope of utility model registration request] 1. A plurality of long and narrow light emitting diodes for line display, and longitudinal side surfaces of the plurality of light emitting diodes are fixed in series by an adhesive, and a space is provided on the light emitting surface side of the light emitting diodes. An LED display device comprising: a holding plate having a shape to be formed; and a diffusion layer that scatters and diffuses light filling the space of the holding plate. 2. A plurality of rows of the plurality of light emitting diodes,
The L according to claim 1, wherein the L is fixed by the holding body and an intermediate holding body interposed between the holding bodies.
ED display device. 3. The LED display device according to claim 1, wherein a color filter is arranged on an upper surface of the diffusion layer. 4. The LED display device according to claim 1, wherein the holder and the intermediate holder have a reflecting surface that reflects light from the light emitting diode.