JPH10240165A - Light emitting diode display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To express a difference between what can be seen from the front and what can be seen from the direction of a fixed angle. SOLUTION: Arbitrary LED chips of a red LED chip 2aR, a green LED chip 2aG, a red LED chip 2bR, and a green LED chip 2bG of a printed board 1 set in concave hole parts 4a, 4b are lighted up, and the light from the LED chips are reflected directly or on slopes 4a1, 4a3 and vertical plane 4a2, 4a4 and are diffused by a synthetic resin filing material 5a consisting of a high light-diffusive material and is further emitted in the direction of the opening 4a5. Since display segments 31-37 are approximately hexahedrons consisting of a low light-diffusive board-like material, an observer can be recognize them as a difference between the luminous energizes emanated from the upper surfaces of the display segments 31-37 and the sides 31b of the display segments 31-37, and a three-dimensional feeling by the display segments 31-37 can be expressed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for a display such as a character display device or a graphic display device having a plurality of light emitting diodes (hereinafter simply referred to as "LEDs"). L to summarize display segments
The present invention relates to an ED display device.

[0002]

2. Description of the Related Art As a conventional LED display device of this type,
There is a cross-sectional structure shown in FIG.

FIG. 10 is a perspective view showing an entire conventional LED display device, and FIG. 11 is a sectional view showing the structure of the conventional LED display device.

In FIG. 1, a printed circuit board 20 has an LED chip 21 provided at a key point of a circuit pattern, and the LED chip 21 is connected to lead wires 22a, 22a via the circuit pattern.
b. On one surface of the printed circuit board 20, a housing 23 formed of a synthetic resin in a substantially rectangular parallelepiped shape is provided.
Are arranged. Printed circuit board 2 in housing 23
A substantially V-shaped recessed hole 24 is provided on the opposite surface to which the “0” has been joined. The wall surface of the concave hole 24 is a reflective surface 24a, and light from the LED chip 21 of the printed circuit board 20 disposed below the concave hole 24 is emitted directly or reflected by the reflective surface 24a and emitted in the opening direction. You. A light diffusion film 25 is bonded to the entire surface of the housing 23 on the opposite side of the printed circuit board 20 to which it is bonded. The light diffusion film 25 scatters the light so that the light from the LED chip 21 is not directly emitted to the outside, and the entire opening of the concave hole 24 emits light uniformly. The light diffusion film 2 is formed by a color film 26 having a character shape 27 having a predetermined transmissive window.
5 is imparted to the light transmitted therethrough. In this manner, when one segment of the character display is formed and “8” is displayed by seven segments, each segment has this configuration.

[0005]

According to the above-mentioned technique, light from the LED chip 21 is transmitted through the light diffusing film 25 and a predetermined color through the opening of the concave hole 24 on the opposite surface of the housing 23 to which the printed circuit board 20 is joined. Of each segment is displayed through the film 26. However, the lighting display of each segment is limited to a flat display and has a poor three-dimensional effect. In particular, the viewing direction is ± 4 with respect to the display surface.
When the angle was within about 5 degrees, if the display surface was flat, no characteristic was obtained from any direction, and the image was monotonous and the image was not good.

[0006] Therefore, a person who views the viewing direction in the vicinity of ± 30 degrees with respect to the display surface evaluates the LED display device at that angle, does not recognize that the front is in the optimum state, and receives a legitimate evaluation. I couldn't do that.

Accordingly, the present invention provides an LE capable of expressing a difference between a front view and a predetermined angle view.
It is an object to provide a D display device.

[0008]

An LED according to claim 1
The display device includes: a concave hole formed in a housing formed of a synthetic resin; one or more LEDs disposed in the concave hole;
A plate member with low diffusivity disposed on the opening surface of the concave hole in which the LED is disposed.

According to a second aspect of the present invention, there is provided an LED display device comprising: a concave hole formed in a housing made of synthetic resin; one or more LEDs disposed in the concave hole; A synthetic resin filler made of expensive materials,
A plate member having low diffusivity, which is disposed so as to be joined to the filler at the opening surface of the concave hole in which the LED is disposed.

According to a third aspect of the present invention, in the LED display device, the plate member having a low diffusivity has a slight light diffusivity.

[0011]

Embodiments of the present invention will be described below.

FIG. 1 shows an LED according to a first embodiment of the present invention.
FIG. 2 is an overall perspective view of a seven-segment character display device as a display device. FIG. 2 is a perspective view of a main part of the seven-segment character display device of the LED display device according to the first embodiment of the present invention.
FIG. 4 is a cross-sectional view of a specific segment in the seven-segment character display device of the LED display device according to the first embodiment of the present invention, and FIG. 4 is a diagram showing light emitted from the LED display device according to the first embodiment of the present invention. It is explanatory drawing of divergence. FIG. 5 is an explanatory view of a light diverging direction of the LED display device according to the first embodiment of the present invention. FIG. 6 is a top view of a display segment of the LED display device according to the first embodiment of the present invention. FIG. 6 is an explanatory diagram of a light divergence direction when the light is roughened.

In FIG. 1, a printed board 1 has a red LED chip 2aR and a green L
Other segments (not shown) such as the ED chip 2aG, the red LED chip 2bR, and the green LED chip 2bG, that is, two colors of seven segments of the total display segments 31 to 37 showing the character "8". The LED is provided. These red LED chip 2aR, green LED chip 2aG, and red LED chip 2bR,
The green LED chip 2bG and the like are connected to one of the lead wires 41 and 42 via a circuit pattern on the surface of the printed circuit board 1. On one surface of the printed circuit board 1, there is provided a housing 2 formed of a synthetic resin that is not light-transmitting and having a substantially rectangular parallelepiped shape. It is desirable that the entire housing 2 be formed of a non-translucent material. However, when the housing 2 is formed of a translucent material, recessed holes 4a, 4b,.
It is preferable to form a reflective film on the wall surface of (1).

Display segments 31 to 3 are provided on the housing 2.
. Are provided with substantially U-shaped recessed holes 4a, 4b,... Having openings corresponding to 7 segments. The recessed holes 4a, 4b,... Of substantially U-shape are, as shown in the recessed holes 4a of FIG. 2, inclined surfaces 4a1 and 4a3 whose widths are linearly reduced to the lower opening 4a6 of the lower bottom surface. It is inclined by about 60 degrees and is continuous with the vertical surface 4a2 or the vertical surface 4a4. The upper opening 4a5 of the concave hole 4a is rectangular. The shape of the concave hole 4a is common to seven segments. The wall surface of the concave hole 4a is a reflection surface, and the red LED chip 2aR of the printed circuit board 1 disposed below the concave hole 4
Green LED chip 2aG and red LED chip 2
Light from the bR, green LED chip 2bG, or the like is reflected directly or on the inclined surfaces 4a1, 4a3 and the vertical surfaces 4a2, 4a4, and is emitted in the opening direction.

The red LED chip 2aR, the green LED chip 2aG, and the red LED chip 2bR,
On the printed circuit board 1 on which the green LED chips 2bG and the like are mounted, only a portion located below the concave hole 4a is coated with a reflective film, or the entire inner surface of the concave hole 4a is coated with a reflective material, Red LED chip 2aR, green LED chip 2aG, and red LE at the bottom
A hole in which the mounted LED such as the D chip 2bR and the green LED chip 2bG is fitted may be formed, and the LED may be inserted therein. By these means, the amount of light guided to the upper opening 4a5 of the concave hole 4a can be increased.

The substantially U-shaped concave hole 4a is filled with a synthetic resin filler 5a obtained by kneading a synthetic resin made of a material having a high light diffusion property. Accordingly, the red LED of the printed circuit board 1 reflected on the wall surface of the concave hole 4a or the like.
Light from the chip 2aR, the green LED chip 2aG, the red LED chip 2bR, the green LED chip 2bG, and the like is diffused and emitted from the upper opening 4a5.
The configuration of the substantially U-shaped concave hole 4 a
Substantially U having an upper opening corresponding to 7 segments 1 to 37
.. Correspond to the basic configuration of the U-shaped concave holes 4a, 4b,.

As shown in FIG. 4, a display segment 31 is provided on the upper surface of the substantially U-shaped recessed hole 4a. The display segment 31 has a high translucency and a low diffusivity. It is a substantially rectangular parallelepiped made of members. Therefore, approximately U
Most of the light entering the display segment 31 from the upper opening of the U-shaped concave hole 4a is transmitted to the upper surface 31a of the display segment 31.
, And the side surface 3 of the display segment 31
1b is the reflected light α due to the incident light of the incident angle θ for total reflection.
It is diverged as Then, the incident light having an incident angle θ or less that is totally reflected on the side surface 31b of the display segment 31 is directly emitted without being reflected as reflected light β. However, incident light having an incident angle θ or less that is totally reflected on the side surface 31b of the display segment 31 is not reflected on the upper surface 31a.
Extremely small compared to the divergent light from In particular, since the display segment 31 is made of a highly translucent plate-like member,
The amount diverged from the side surface 31b of the display segment 31 is extremely reduced.

The LED display device thus configured is
The housing 2 formed of a synthetic resin having low translucency, the recessed holes 4a, 4b,... Formed in the housing 2, and the red LEDs of the printed circuit board 1 disposed in the recessed holes 4a, 4b,. Chip 2aR, green LED chip 2aG, red LED chip 2bR, green LED chip 2b
G and the like, and a filler 5 of a synthetic resin made of a material having a high light diffusing property filled in the concave holes 4a, 4b,.
, and a high translucency, which is disposed by being joined to the filler 5a on the opening surface of the recessed holes 4a, 4b,.
Display segments 31 to 31 made of a plate-like member with low diffusivity
37.

Therefore, the red LED chips 2aR of the printed circuit board 1 disposed in the recessed holes 4a, 4b,.
Green LED chip 2aG, red LED chip 2b
R, when any LED chip of the green LED chip 2bG is turned on and the red and / or green LED chip emits light, the light from the LED chip is directly or on the inclined surface 4b.
a1, 4a3, reflected by the vertical surfaces 4a2, 4a4, and diffused by the synthetic resin filler 5a made of a material having a high light diffusion property,
Further, the light is emitted in the direction of the opening 4a5. Since the display segments 31 to 37 provided on the upper surfaces of the substantially U-shaped concave holes 4a, 4b,... Are substantially rectangular parallelepiped members made of a highly translucent plate-like member, the substantially U-shaped display segments 31 to 37 are formed. Recessed holes 4a, 4b ...
Light entering the display segments 31 to 37 from the upper opening of the display segments 31 to 37 is, for example,
Although the display segments 31 to 37 are made of a highly translucent plate-like member, only a small amount of the display segments 31 to 37 are emitted from the side surface 31b. FIG. 6 is an explanatory diagram of a light divergence direction as indicated by an arrow in FIG. 5. Since this is common to the light emitted from the display segments 31 to 37, when viewed from the front of the display segments 31 to 37,
The difference when viewed from the side is that the display segments 31 to 37
Is recognized by a viewer as a difference in the amount of light diverged from the upper surface of the display segment 31 and the side surface 31b of the display segments 31 to 37, and the three-dimensional effect of the character shape by the display segments 31 to 37 can be expressed.

Note that, as shown in FIG.
When the surface of the upper surface 31a of the display segment in the D display device is roughened, light divergence can be made soft,
In addition, the floating of only the upper surface 31a can be expressed.

The LED chips disposed in the recessed holes 4a, 4b,... Are red LED chips 2aR, 2b.
R, any LED of green LED chips 2aG, 2bG
Since a plurality of LED chips such as red and green are arranged corresponding to each of the display segments 31 to 37 like chips and the like, the character display can be changed depending on use. In the present embodiment, the red LED chips 2aR and 2bR and the green LED chip 2a
Although an example in which G and 2bG are provided has been described, three primary colors can be used when the present invention is implemented. That is, one or more colors may be used so that they can be used as needed.

The LED display device according to the above-described embodiment uses a synthetic resin filler 5a made of a material having a high light diffusion property.
Can also be omitted. That is, the housing 2 formed of a synthetic resin having low translucency, the concave holes 4a, 4b,... Formed in the housing 2, and the concave holes 4a, 4b,.
Red LED chip 2a of printed circuit board 1 arranged in
R, an LED comprising a green LED chip 2aG, a red LED chip 2bR, a green LED chip 2bG, etc.
, And display segments 31 to 37 made of a plate member having a high translucency and a low diffusivity, which are disposed so as to be joined to the opening surfaces of the recessed holes 4a, 4b, ... in which the LEDs are disposed. It can also be configured.

Therefore, the red LED chips 2aR of the printed circuit board 1 arranged in the recessed holes 4a, 4b,.
Green LED chip 2aG, red LED chip 2b
R, when any LED chip of the green LED chip 2bG is turned on and the red and / or green LED chip emits light, the light from the LED chip is directly or on the inclined surface 4b.
a1, 4a3, and are reflected by vertical surfaces 4a2, 4a4.
It is emitted in the a5 direction. Then, a substantially U-shaped concave hole 4a,
Display segment 31 arranged on the upper surface of 4b.
37 are substantially rectangular parallelepiped members made of highly translucent plate-like members, so that light entering the display segments 31 to 37 from the upper openings of the substantially U-shaped concave holes 4a, 4b,. The display segments 31 to 37 are scattered from the upper surface of the segments 31 to 37, for example, the upper surface 31a. Since this is common to the light emitted from the display segments 31 to 37, the difference between the display segments 31 to 37 when viewed from the front and when viewed from the side is the upper surface 31a and the side surface of the display segments 31 to 37. The difference in the amount of light emitted from 31b is recognized by the viewer, and the three-dimensional effect of the character shape by the display segments 31 to 37 can be expressed.

In this embodiment, since the amount of light emitted from the upper surface 31a of each of the display segments 31 to 37 becomes non-uniform, the light diffusion film 6 is formed on the entire surface of the housing 2 on the side opposite to the side where the printed circuit board 1 is joined. Should be joined.

FIG. 7 shows an LED according to a second embodiment of the present invention.
It is sectional drawing of the specific segment in the 7-segment character-shaped display device of a display device. In the drawings, the same reference numerals and symbols as those of the first embodiment denote the same or corresponding components as those of the first embodiment, and a duplicate description will be omitted.

The LED display device thus configured is
The housing 2 formed of a synthetic resin having low translucency, the recessed holes 4a, 4b,... Formed in the housing 2, and the red LEDs of the printed circuit board 1 disposed in the recessed holes 4a, 4b,. Chip 2aR, green LED chip 2aG, red LED chip 2bR, green LED chip 2b
G and the like, and recessed holes 4a,
And display segments 31 to 37 made of a highly translucent plate-like member disposed to be joined to the opening surfaces of the printed circuit boards 4b,. The light diffusing film 6 is bonded to the display segments 31 to 37 so that the amount of light emitted from the upper surfaces 31a of the display segments 31 to 37 is made uniform.

Therefore, the red LED chips 2aR of the printed circuit board 1 disposed in the recessed holes 4a, 4b,.
Green LED chip 2aG, red LED chip 2b
R, when any LED chip of the green LED chip 2bG is turned on and the red and / or green LED chip emits light, the light from the LED chip is directly or on the inclined surface 4b.
a1, 4a3, and are reflected by vertical surfaces 4a2, 4a4.
It is emitted in the a5 direction. Then, a substantially U-shaped concave hole 4a,
Display segment 31 arranged on the upper surface of 4b.
37 are substantially rectangular parallelepiped members made of highly translucent plate-like members, so that light entering the display segments 31 to 37 from the upper openings of the substantially U-shaped concave holes 4a, 4b,. The display segments 31 to 37 are scattered from the upper surface of the segments 31 to 37, for example, the upper surface 31a. Since this is common to the light emitted from the display segments 31 to 37, the difference between the display segments 31 to 37 when viewed from the front and when viewed from the side is the upper surface 31a and the side surface of the display segments 31 to 37. The difference in the amount of light emitted from 31b is recognized by the viewer, and the three-dimensional effect of the character shape by the display segments 31 to 37 can be expressed.

In each of the above embodiments, a case of a character display device performing digital display has been described. However, in the present invention, not only character display but also graphic display of characters and the like are used. it can.

By the way, in the LED display device of each of the above embodiments, the housing 2 formed of a synthetic resin having low translucency has concave holes 4a, 4b,.
Since it is sufficient to form a reflection surface on 4b,. However, when it is peeled off, light leakage may occur with a very light-transmitting material. Therefore, it is desirable that the housing 2 be formed of a synthetic resin having low translucency.

In the embodiment of the present invention, the shape of the recessed holes 4a, 4b,... Formed in the housing 2 of the above embodiments is determined by the number and shape of the display segments 31 to 37. In any case, any material can be used as long as it can efficiently guide light to the upper opening by reflection.

The concave holes 4a, 4a,
4b, red LED on the printed circuit board 1 arranged at
When implementing the present invention, the LED chip including the chip 2aR, the green LED chip 2aG, the red LED chip 2bR, the green LED chip 2bG, and the like should have one or more LED chips in each concave hole. Can be. However, when practicing the present invention, one or more LED lamps may be provided in each recessed hole. That is, one or more LEDs may be provided in each recessed hole. However, an LED chip is advantageous in terms of economy and miniaturization.

Furthermore, the concave holes 4a, 4
Since the filler 5a made of a synthetic resin made of a material having a high light diffusing property filled in b,... generates diffused reflection, when implementing the present invention, either the reflection member or the refraction member is used. There may be.

Further, the filler 5a on the opening surfaces of the recessed holes 4a, 4b,...
When the present invention is implemented, the display segments 31 to 37 made of a plate-like member having a low light diffusing property, which are arranged to be joined to the display device, can be used not only for character display but also for graphic display of characters and the like.

Next, applications of the LED display device according to the embodiment of the present invention will be described.

FIG. 8 shows an LED according to the first embodiment of the present invention.
It is a top view showing the use of the 7-segment character display of a display. FIG. 9 shows an LED according to the first embodiment of the present invention.
It is sectional drawing of the display part used for the use of the 7-segment character-shaped display device of a display device.

In FIG. 8, a display unit 10 has a display unit such as a vehicle speedometer 11, a fuel meter, a range of a shift lever, a tachometer, and the like.
It has an ED display device.

As shown in FIG. 9, the display unit 10 is disposed at the center of the rear part of the meter case 12 of the vehicle with the plane facing upward. A half mirror 13 is arranged on the driver side of the display unit 10 of the meter case 12. Above the display section 10 of the meter case 12, a reflecting mirror 14 composed of a concave mirror is provided. A front lens 15 is provided on the front side of the meter case 12 on the driver side. The meter case 12 and the like are provided on an instrument panel (not shown) on the front of the driver.

Thus, the display of the speedometer 11 on the display unit 10 is passed through the half mirror 13, enlarged by the reflector 14, reflected by the half mirror 13, reflected by the half mirror 13, and reflected by the front lens. Radiated from 15 toward the driver. From the driver's point of view, the display of the speedometer 11 on the display unit 10 is recognized as if the display surface exists there because the virtual image surface 16 is formed behind the meter case 12.

At this time, the LE shown in the first embodiment is
The display unit 10 including the D display device has concave holes 4a, 4b,
.., And turns on any one of the red LED chip 2aR, the green LED chip 2aG, the red LED chip 2bR, and the green LED chip 2bG of the printed circuit board 1, and one or both of red and green When the LED chip emits light, the light from the LED chip is reflected directly or on the inclined surfaces 4a1, 4a3 and the vertical surfaces 4a2, 4a4,
Further, the light is emitted in the direction of the opening 4a5. The display segments 31 to 37 disposed on the upper surfaces of the substantially U-shaped concave holes 4a, 4b,... Are incident on the display segments 31 to 37. The light entering the display segments 31 to 37 is
Upper surfaces of the display segments 31 to 37, for example, the upper surface 31a
However, since the display segments 31 to 37 are made of a highly translucent plate-like member, the number of the light emitted from the side surface 31b is reduced. Therefore, the difference between the display segments 31 to 37 when viewed from the front and the side when viewed from the side is recognized by the viewer as the difference in the amount of light emitted from the upper surface 31a and the side surface 31b of the display segments 31 to 37. A three-dimensional character can be expressed by the segments 31 to 37.

Here, the case where the LED display device of the present embodiment is indirectly used for a speedometer 11 of a vehicle has been described. Needless to say, a flat panel may be used.

The display segments 31 to 37 made of the plate member having high translucency are provided with a slight light diffusivity so that the three-dimensional effect of the character or figure by the plate member can be arbitrarily set. Can be expressed and built into the device,
When set to external light inside the device or outside, harmony with external light in the environment can be achieved.

[0042]

As described above, according to the LED display device of the first aspect, a concave hole formed in a housing made of a synthetic resin, one or more LEDs disposed in the concave hole,
A low-diffusivity plate-shaped member disposed on the opening surface of the concave hole in which the ED is disposed.

Therefore, when the LED provided in the concave hole emits light, the light from the LED is reflected directly or on an inclined surface or a vertical surface and emitted in the direction of the opening above the LED. The plate member with low diffusivity is recognized by the viewer as a difference in the amount of divergent light when viewed from the front and when viewed from the side. Can express a three-dimensional effect. Therefore, it is possible to express the difference between when viewed from the front and when viewed from a predetermined angle. In particular, in the present invention, as the plate member having low diffusivity, only the translucency may be respected and the plate member having no diffusivity may be used, so that there is no waste of light energy.

According to a second aspect of the present invention, there is provided an LED display device comprising: a concave hole formed in a housing formed of a synthetic resin; one or more LEDs disposed in the concave hole; A synthetic resin filler made of a material;
A low-diffusivity plate-like member that is provided so as to be joined to the filler at the opening surface of the concave hole in which the ED is provided.

Therefore, when the LED provided in the recessed hole emits light, the light from the LED is reflected directly or on an inclined surface or a vertical surface, and is filled with a synthetic resin filler made of a material having a high light diffusion property. Since the light is diffused and emitted in the direction of the upper opening, the low diffusive plate-shaped member disposed on the upper surface of the concave hole has a difference in the amount of divergent light when viewed from the front and when viewed from the side. The difference is recognized by the viewer, and the three-dimensional effect of the character shape or the figure by the plate-like member can be expressed. Therefore, it is possible to express the difference between when viewed from the front and when viewed from a predetermined angle. In particular, in the present invention, as the plate member having low diffusivity, only the translucency may be respected and the plate member having no diffusivity may be used, so that there is no waste of light energy.

According to a third aspect of the present invention, in the LED display device, the plate member having a low diffusivity according to the first or second aspect has a slight light diffusivity. In addition to the effects described in the item 2, it is possible to arbitrarily express a three-dimensional appearance of a character or a graphic by the plate-like member, and to achieve harmony with external light, environmental light, and the like in the device.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a seven-segment character display device as an LED display device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a main part of a seven-segment character display device of the LED display device according to the first embodiment of the present invention.

FIG. 3 is a sectional view of a specific segment in the seven-segment character display device of the LED display device according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram of divergence of light from identification of the LED display device according to the first embodiment of the present invention.

FIG. 5 is an explanatory diagram of a light diverging direction of the LED display device according to the first embodiment of the present invention.

FIG. 6 is an explanatory diagram of a light diverging direction when an upper surface of a display segment of the LED display device according to the first embodiment of the present invention is roughened.

FIG. 7 is a sectional view of a specific segment in a seven-segment character display device of an LED display device according to a second embodiment of the present invention.

FIG. 8 is a plan view showing an application of a 7-segment character display device of the LED display device according to the first embodiment of the present invention.

FIG. 9 is a sectional view of a display used for a 7-segment character display of the LED display according to the first embodiment of the present invention.

FIG. 10 is a perspective view showing an entire conventional LED display device.

FIG. 11 is a sectional view showing the structure of a conventional LED display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Printed circuit board 2 Housing 4a, 4b ... Concave hole 2aR, 2bR ... Red LED chip 2aG, 2bG ... Green LED chip 5a Filler 31-37 Segment 4a1, 4a3 Inclined surface 4a2, 4a4 vertical surface

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masato Tamaki 1 Ochiai Nagahata, Kasuga-cho, Nishi-Kasugai-gun, Aichi Prefecture Inside Toyota Gosei Co., Ltd. Toyoda Gosei Co., Ltd.

Claims (3)

[Claims] A housing formed of a synthetic resin; a concave hole formed in the housing; one or more light emitting diodes disposed in the concave hole; and an opening surface of the concave hole provided with the light emitting diode. A light-emitting diode display device, comprising: a plate member having a low diffusibility disposed in the light-emitting diode display device. 2. A housing formed of synthetic resin, a concave hole formed in the housing, one or more light emitting diodes disposed in the concave hole, and a material having a high light diffusing property filled in the concave hole. A light-emitting diode comprising: a synthetic resin filler; and a plate member having low diffusibility, which is disposed by being joined to the filler at an opening surface of the concave hole in which the light-emitting diode is disposed. Display device. 3. The light emitting diode display device according to claim 1, wherein the plate member having a small diffusion property has a slight light diffusion property.