JP2021006855A - Display unit and display device - Google Patents

Abstract

To provide a display device in which the contrast is enhanced, and a display unit which can be used for the display device.SOLUTION: A lens case 300 has: a plate-like case body part 310 facing a circuit board 200; and a lens part 320 disposed at a position facing each of a plurality of light-emitting devices 100, in the case body part 310. The lens part 320 adjusts the directivity of visible light which is emitted by the light-emitting device 100. A shading body part 410 shields external light incident on the lens case 300 from the outside. An opening part 420 which visual light in which the directivity is adjusted by the lens part 320 passes through is formed in the shading body part 410. A gap is secured between the shading body part 410 and the case body part 310. The size in a Y-axis direction corresponding to a vertical direction on a display screen, of each opening part 420, is equal to or smaller than the size in the Y-axis direction of the lens part 320 which adjusts the directivity of the visual light which passes through the opening part 420.SELECTED DRAWING: Figure 5

Description

The present invention relates to a display unit and a display device.

As disclosed in Patent Document 1, a plurality of light emitting devices arranged in a matrix on a circuit board, a lens case for adjusting the directivity of visible light emitted by each light emitting device, and a lens case are covered. A display device including a light-shielding member is known.

The lens case has a lens portion provided at a position facing each light emitting device, and a plate-shaped case main body portion for holding the plurality of lens portions. The light-shielding member is formed with an opening for exposing each lens portion to the outside.

Japanese Unexamined Patent Publication No. 2013-011716

The light-shielding member blocks the sunlight or the light of the illumination that illuminates the display device (hereinafter, collectively referred to as external light). However, the external light cannot be completely blocked by the light-shielding member. External light that has passed through the opening without being able to block light in the light-shielding member is incident on the lens case.

Since the surface of the lens portion in the lens case is curved, when the external light is incident on the lens portion, the external light is reflected in various directions. Therefore, it is unlikely that external light will be reflected with high intensity only in a specific direction. For this reason, the reflection of external light on the lens portion is less noticeable to the observer looking at the display device.

On the other hand, since the case main body of the lens case is formed in a plate shape, when external light is incident on the case main body, the directions of reflection of the external light on the case main body are likely to be aligned. Therefore, a situation in which external light is reflected with a large intensity in a specific direction is likely to occur. As a result of the external light reflected with such a large intensity entering the eyes of the observer, the contrast representing the difference in brightness of the image displayed on the display device is lowered.

An object of the present invention is to provide a display device having enhanced contrast and a display unit that can be used for the display device.

In order to achieve the above object, the display unit according to the present invention is
A display unit that constitutes a part of the display screen that displays images.
Multiple light emitting devices, each of which emits visible light,
A circuit board in which a plurality of the light emitting devices are distributed and arranged in two dimensions,
It has a plate-shaped case main body portion facing the circuit board and a lens portion of the case main body portion provided at a position facing each of the plurality of light emitting devices, and each of the lens portions is self-contained. A lens case that adjusts the directivity of the visible light emitted by the light emitting device facing the
It is arranged at a position facing the lens case, and has a plate-shaped light-shielding main body portion that blocks external light that tends to enter the lens case from the outside toward the circuit board. An opening through which the visible light whose directivity is adjusted in each of the lens portions is formed for each light emitting device, and a light-shielding member.
With
A space is secured between the light-shielding main body and the case main body.
The size of each of the openings in the vertical direction on the display screen corresponds to the vertical direction of the lens portion that adjusts the directivity of the visible light passing through the openings. It is less than or equal to the size of the direction.

According to the above configuration, it is difficult for an observer looking at the display screen to visually recognize the case body. Therefore, it is unlikely that the external light reflected by the case body reaches the observer's eyes. As a result, the contrast of the image displayed on the display screen is enhanced.

Perspective view of the display device according to the first embodiment An exploded perspective view of the display unit according to the first embodiment. Top view of the light emitting device according to the first embodiment Top view showing an enlarged part of the display unit according to the first embodiment. FIG. 5 is an enlarged sectional view showing a part of the display unit according to the first embodiment. Top view showing an enlarged part of the display unit according to the second embodiment. Top view showing an enlarged part of the display unit according to the third embodiment. Top view showing an enlarged part of the display unit according to the fourth embodiment. FIG. 5 is an enlarged sectional view showing a part of the display unit according to the fourth embodiment. Top view showing an enlarged part of the display unit according to the fifth embodiment. FIG. 5 is an enlarged sectional view showing a part of the display unit according to the fifth embodiment. FIG. 6 is an enlarged sectional view showing a part of the display unit according to the sixth embodiment. The conceptual diagram which shows the mode of use of the display device which concerns on Embodiment 6. FIG. 5 is an enlarged sectional view showing a part of the display unit according to the seventh embodiment. FIG. 5 is an enlarged sectional view showing a part of the display unit according to the eighth embodiment.

Hereinafter, the display device according to the first to eighth embodiment will be described with reference to the drawings. In the figure, the same or corresponding parts are designated by the same reference numerals.

[Embodiment 1]
As shown in FIG. 1, the display device 700 according to the present embodiment includes a plurality of display units 500 for displaying images, and a frame 600 for holding the plurality of display units 500. The plurality of display units 500 are arranged in a matrix in the frame 600. As a result, the plurality of display units 500 constitute one display screen 710 as a whole. An image is displayed on the display screen 710. That is, each display unit 500 constitutes a part of the display screen 710.

For the following description, the X-axis parallel to the rows of the matrix composed of the plurality of display units 500 on the display screen 710, the Y-axis parallel to the columns of the matrix, and the Z-axis parallel to the normal to the display screen 710. Define a right-handed XYZ Cartesian coordinate system with. The direction from the display screen 710 toward the outside along the Z axis is the positive direction of the Z axis.

As shown in FIG. 2, each display unit 500 includes a plurality of light emitting devices 100 that emit visible light, and a circuit board 200 in which the plurality of light emitting devices 100 are arranged in a two-dimensionally distributed state. Be prepared. Specifically, the plurality of light emitting devices 100 are arranged in a matrix on the circuit board 200. The rows of the matrix in which the plurality of light emitting devices 100 form on the circuit board 200 are parallel to the X-axis, and the columns of the matrix are parallel to the Y-axis.

Although not shown, the circuit board 200 has a control circuit for supplying electric power required for light emission and controlling the light emission to each light emitting device 100. By supplying electric power to each light emitting device 100 through the control circuit, each light emitting device 100 emits light.

Each light emitting device 100 constitutes one pixel on the display screen 710 shown in FIG. The intensity ratio between the light components of the three primary colors constituting the visible light emitted by each light emitting device 100 is controlled by the control circuit (not shown) described above, so that the image on the display screen 710 shown in FIG. 1 is obtained. Is realized.

As shown in FIG. 3, each light emitting device 100 includes a red LED (Light Emitting Diode) 110R as a first light emitting element, a green LED 110G as a second light emitting element, and a blue LED 110B as a third light emitting element. The red LED 110R emits red light as the first primary color. The green LED 110G emits green light as a second primary color different from the first primary color. The blue LED 110B emits blue light as a third primary color different from the first primary color and the second primary color.

Further, the light emitting device 100 includes a package member 120 that holds the red LED 110R, the green LED 110G, and the blue LED 110B, and a lead frame 130 that supplies electric power required for light emission to each of the red LED 110R, the green LED 110G, and the blue LED 110B. Be prepared. The lead frame 130 is integrally formed with the package member 120.

As shown in FIG. 5, the package member 120 is mechanically and electrically connected to the circuit board 200 through the lead frame 130. Each of the red LED 110R, the green LED 110G, and the blue LED 110B is electrically connected to a control circuit (not shown) included in the circuit board 200 through the lead frame 130.

The package member 120 defines a bottomed recess having a depth in the Z-axis direction. A red LED 110R, a green LED 110G, and a blue LED 110B are attached to the bottom surface of the recess. Further, the light emitting device 100 has a sealing material 140 filled in the concave portion thereof. The sealing material 140 is made of a material that is transparent to visible light.

The explanation will be continued by returning to FIG. Each display unit 500 further includes a lens case 300 arranged at a position facing the circuit board 200, and a light-shielding member 400 facing the front surface of the lens case 300 opposite to the back surface facing the circuit board 200. Be prepared.

The lens case 300 has a plate-shaped case main body 310 facing the circuit board 200, and a lens 320 provided at a position of the case main body 310 facing each light emitting device 100. The lens portion 320 and the case body portion 310 are integrally formed of a material having a higher refractive index than air and transparent to visible light.

Each lens unit 320 adjusts the directivity of visible light emitted by the light emitting device 100 facing itself. Hereinafter, a specific description will be given.

As shown in FIG. 5, the lens portion 320 has a shape that is raised in the Z-axis plus direction from the case main body portion 310 toward the light-shielding member 400 than the surface of the case main body portion 310 facing the light-shielding member 400. That is, the lens unit 320 constitutes a convex lens that bulges in the plus direction of the Z axis. Further, the back surface of the lens portion 320 facing the light emitting device 100 is formed to be continuous and flat with the case main body portion 310.

Since it has such a shape, the lens unit 320 brings the visible light emitted from each of the red LED 110R, the green LED 110G, and the blue LED 110B in the light emitting device 100, which propagates while spreading radially, close to the parallel light. That is, the lens unit 320 enhances the directivity of the visible light emitted by the light emitting device 100.

The explanation will be continued by returning to FIG. The light-shielding member 400 has a plate-shaped light-shielding main body 410 that blocks external light that tends to enter the lens case 300 from the outside toward the circuit board 200. The light-shielding main body 410 is arranged at a position facing the lens case 300.

The reflectance of the light-shielding main body 410 to external light is smaller than the reflectance of the lens case 300 to external light. Therefore, the light-shielding main body 410 suppresses the reflected light reflected by the external light on the display screen 710 shown in FIG. 1 from reaching the eyes of the observer looking at the display screen 710. As a result, the contrast of the image displayed on the display screen 710 is improved.

In the light-shielding main body 410, an opening 420 through which visible light whose directivity is adjusted by each lens 320 passes is formed for each light emitting device 100. Visible light emitted from the light emitting device 100 and whose directivity is adjusted by the lens unit 320 passes through the opening 420 and reaches the observer's eyes.

The light-shielding member 400 also has an eaves portion 430 of the light-shielding main body 410 that protrudes outward from the surface facing the outside. The reflectance of the eaves portion 430 to external light is smaller than the reflectance of the lens case 300 to external light.

The eaves portion 430 has a height in the Z-axis direction and extends in the X-axis direction. A plurality of eaves 430 are arranged in the Y-axis direction. In the Y-axis direction, openings 420 and eaves 430 are alternately arranged. The eaves portion 430 contributes to the improvement of contrast by suppressing the incident of external light on the opening 420.

Hereinafter, the arrangement relationship between each opening 420 and the lens portion 320 that adjusts the directivity of visible light passing through the opening 420 will be specifically described.

As shown in FIG. 4, when viewed from a line of sight parallel to the Z axis, each opening 420 is formed in a circular shape, and each lens portion 320 is formed in an elliptical shape. Then, when viewed from a line of sight parallel to the Z axis, the size of each opening 420 is smaller than the size of the lens portion 320 that adjusts the directivity of visible light passing through the opening 420. Specifically, when viewed from a line of sight parallel to the Z axis, the inner edge of the opening 420 is arranged inside the lens portion 320 closer to the optical axis than the outer edge 320e of the lens portion 320 over the entire circumference. ..

That is, when viewed from a line of sight parallel to the Z axis, the size of the opening 420 in the Y-axis direction corresponding to the vertical direction on the display screen 710 shown in FIG. 1 is larger than the size of the lens unit 320 in the Y-axis direction. The size of the opening 420, which is small and corresponds to the left-right direction on the display screen 710 shown in FIG. 1, is smaller than the size of the lens unit 320 in the X-axis direction.

FIG. 5 shows a cross section at the position of the broken line AA-AA in FIG. A distance is secured in the Z-axis direction between the light-shielding main body 410 and the case main body 310. The distance between the light-shielding main body 410 and the case main body 310 is equal to or greater than the height of each lens portion 320 in the Z-axis plus direction from the surface of the case main body 310. That is, the lens portion 320 does not fit into the opening 420.

However, as described with reference to FIG. 4, when viewed in a line of sight parallel to the Z axis, the size of each opening 420 is smaller than the size of the lens portion 320, so the display screen 710 shown in FIG. 1 is viewed. It is difficult for the observer to see the case body 310. Therefore, it is unlikely that the external light reflected by the case body 310 reaches the observer's eyes. As a result, the contrast of the image displayed on the display screen 710 is enhanced.

Further, since the lens unit 320 does not project to the opening 420, the external light reflected by the lens unit 320 is less likely to reach the observer's eyes than when the lens unit 320 projects to the opening 420. This also contributes to the improvement of contrast.

Further, since a space is secured between the light-shielding main body 410 and the case main body 310, heat is not easily transferred from one of the light-shielding main body 410 and the lens case 300 to the other, and the light-shielding main body 410 and the lens case 300 are not easily transferred. Thermal stress is unlikely to occur.

In the present embodiment, the light-shielding member 400 with respect to the lens case 300 is provided on the condition that the inner edge of the opening 420 is arranged inside the outer edge 320e of the lens portion 320 when viewed from a line of sight parallel to the Z axis. A deviation of the relative position on the XY plane is allowed. Therefore, it is possible to obtain the effect that the manufacturing margin is increased and the manufacturing cost is lowered.

[Embodiment 2]
In the first embodiment, as shown in FIG. 4, the size of the opening 420 in the Y-axis direction is smaller than the size of the lens portion 320 in the Y-axis direction, but the size of the opening 420 in the Y-axis direction The size may be equal to the size of the lens unit 320 in the Y-axis direction. Specific examples thereof will be described below.

As shown in FIG. 6, in the present embodiment, the outer edge 320e of the lens portion 320 is inscribed in the inner edge of the opening 420 in the Y-axis direction when viewed from a line of sight parallel to the Z axis. That is, the size of the opening 420 in the Y-axis direction is equal to the size of the lens portion 320 in the Y-axis direction. Other configurations are the same as in the first embodiment. The same effect as that of the first embodiment can be obtained by this embodiment as well.

[Embodiment 3]
In the first embodiment, as shown in FIG. 4, the size of the opening 420 in the X-axis direction is set to be equal to or less than the size of the lens portion 320 in the X-axis direction, but the size of the opening 420 in the X-axis direction is It may be larger than the size of the lens unit 320 in the X-axis direction. Specific examples thereof will be described below.

As shown in FIG. 7, in the present embodiment, the outer edge 320e of the lens portion 320 is arranged inside the inner edge of the opening 420 in the X-axis direction when viewed from a line of sight parallel to the Z axis. However, in the Y-axis direction, as in the first embodiment, since the inner edge of the opening 420 is arranged inside the outer edge 320e of the lens portion 320, the case main body portion does not overlap with the light shielding main body portion 410 by that amount. 310 becomes narrower.

In particular, in the Y-axis direction, since the inner edge of the opening 420 is arranged inside the outer edge 320e of the lens portion 320, the outside light is incident on the display screen 710 shown in FIG. 1 from diagonally above. However, of the case body 310 around the lens 320, the portions located above and below the lens 320 are less noticeable to the observer looking up at the display screen 710. Therefore, the amount of external light reflected by the case body 310 and reaching the observer's eyes is reduced, and the contrast of the image is improved.

[Embodiment 4]
FIG. 6 illustrates a configuration in which the center position of the opening 420 and the center position of the lens portion 320 are aligned in the Y-axis direction when viewed from a line of sight parallel to the Z axis, but the center of the opening 420 is illustrated. The position may be deviated in the Y-axis direction with respect to the center position of the lens unit 320. Specific examples thereof will be described below.

As shown in FIG. 8, in the present embodiment, the center position CA of each opening 420 is larger than the center position CB of the lens unit 320 that adjusts the directivity of visible light passing through the opening 420. It is shifted in the minus direction of the Y axis corresponding to the lower part on the display screen 710 shown in.

The center position CA of the opening 420 means the position of the geometric center of the opening 420 in the XY virtual plane parallel to the display screen 710 shown in FIG. Further, the center position CB of the lens unit 320 means the position of the optical axis of the lens unit 320 in the XY virtual plane parallel to the display screen 710 shown in FIG.

When viewed from a line of sight parallel to the Z axis, the upper end portion of the lens portion 320, that is, the end portion in the plus direction of the Y axis is covered with the light-shielding main body portion 410. The position of the lowermost portion of the inner edge of the opening 420, that is, the portion located in the negative direction of the Y-axis, in the Y-axis direction is aligned with the position of the lowermost portion of the outer edge 320e of the lens portion 320 in the Y-axis direction. ..

FIG. 9 shows a cross section at the position of the broken line BB-BB in FIG. It is the same as the first embodiment in that a space is secured between the light-shielding main body 410 and the case main body 310. A first virtual line-of-sight axis VLA tilted by θA = 13 ° with respect to the normal NL of the circuit board 200 is defined.

The first virtual line-of-sight axis VLA is assumed to be the direction of the line of sight of an observer looking up at the display screen 710 shown in FIG. 1 at an angle of 13 °. That is, the first virtual line-of-sight axis VLA is rotated by 13 ° counterclockwise when viewed from the minus direction to the plus direction of the X axis with respect to the normal line NL. That is, θA represents the elevation angle.

The first virtual line-of-sight axis VLA is located at the uppermost position of the inner edge of the opening 420, that is, at the most positive direction of the Y axis, and at the uppermost position of the outer edge 320e of the lens portion 320 when viewed in cross section parallel to the X axis. Connect with the located part.

Therefore, when the display screen 710 shown in FIG. 1 is looked up at an elevation angle θA = 13 ° and an elevation angle smaller than that, the portion of the case body portion 310 located in the Y-axis plus direction of the lens portion 320 is the light-shielding main body. It appears to be obscured by part 410.

Therefore, even if the outside light is reflected at the portion of the case body 310 located in the positive direction of the Y axis of the lens 320, the reflected light is shown at an elevation angle θA = 13 ° or less. It cannot be seen by the observer looking up at the display screen 710 shown in 1. As a result, the contrast of the image is improved.

As described above, when viewed from a line of sight parallel to the Z axis, the Y-axis direction of the lowermost portion of the inner edge of the opening 420 and the lowermost portion of the outer edge 320e of the lens portion 320. The positions of are aligned. Therefore, even if the elevation angle described above is 0 °, the portion of the case body 310 located in the negative direction of the Y-axis of the lens 320 appears to be covered by the light-shielding body 410.

[Embodiment 5]
FIG. 8 illustrates a configuration in which the center position CA of the opening 420 is deviated from the center position CB of the lens portion 320 in the minus direction of the Y axis when viewed from a line of sight parallel to the Z axis. The center position CA of the lens unit 320 may be deviated from the center position CB of the lens unit 320 in the positive direction of the Y axis. Specific examples thereof will be described below.

As shown in FIG. 10, in the present embodiment, the center position CA of each opening 420 is larger than the center position CB of the lens unit 320 that adjusts the directivity of visible light passing through the opening 420. It is shifted in the Y-axis plus direction corresponding to the upper part on the display screen 710 shown in.

When viewed from a line of sight parallel to the Z axis, the lower end portion of the lens portion 320, that is, the end portion in the minus direction of the Y axis is covered with the light-shielding main body portion 410. The position of the uppermost portion of the inner edge of the opening 420, that is, the portion located in the plus direction of the Y-axis, in the Y-axis direction is aligned with the position of the uppermost portion of the outer edge 320e of the lens portion 320 in the Y-axis direction. ..

FIG. 11 shows a cross section at the position of the broken line CC-CC in FIG. A second virtual line-of-sight axis VLB tilted by θB = 5 ° with respect to the normal NL of the circuit board 200 is defined. The second virtual line-of-sight axis VLB is assumed to be the direction of the line of sight of the observer looking down at the display screen 710 shown in FIG. 1 at an angle of 5 °. That is, the second virtual line-of-sight axis VLB is rotated 5 ° clockwise with respect to the normal line NL when viewed from the minus direction to the plus direction of the X axis. That is, θB represents the depression angle.

The second virtual line-of-sight axis VLB is the lowermost portion of the inner edge of the opening 420, that is, the portion located in the negative direction of the Y-axis, and the lowermost portion of the outer edge 320e of the lens portion 320 when viewed in a cross-sectional view parallel to the X-axis. Connect with the located part.

Therefore, when looking down on the display screen 710 shown in FIG. 1 with a depression angle θB = 5 ° and a depression angle smaller than that, the portion of the case main body 310 located in the negative direction of the Y axis of the lens 320 is the light-shielding main body. It appears to be obscured by 410.

Therefore, even if the external light is reflected at the portion of the case body 310 located in the negative direction of the Y-axis of the lens 320, the reflected light is shown at an angle of depression angle θB = 5 ° or less. It cannot be seen by the observer looking down at the display screen 710 shown in 1. As a result, the contrast of the image is improved.

As described above, when viewed from a line of sight parallel to the Z axis, the Y-axis direction of the uppermost portion of the inner edge of the opening 420 and the uppermost portion of the outer edge 320e of the lens portion 320. The positions of are aligned. Therefore, even if the above-mentioned depression angle is 0 °, the portion of the case body 310 located in the positive direction of the Y axis of the lens 320 appears to be covered by the light-shielding body 410.

[Embodiment 6]
The configuration of the fourth embodiment and the configuration of the fifth embodiment can be combined. Specific examples thereof will be described below.

As shown in FIG. 12, in the present embodiment, when viewed in a cross-sectional view parallel to the X-axis, a portion located at the uppermost position on the inner edge of the opening 420 and a portion located at the uppermost position on the outer edge 320e of the lens portion 320. The second virtual line-of-sight axis VLB is connected by the first virtual line-of-sight axis VLA and is located at the lowest position on the inner edge of the opening 420 and the lowest position on the outer edge 320e of the lens portion 320. Is tied by.

Therefore, according to the present embodiment, when looking up at the display screen 710 shown in FIG. 1 at an elevation angle of 13 ° or less, looking down at an angle of depression angle of 5 ° or less, or when looking along the normal NL. Even in the case of, the contrast of the image is improved.

FIG. 13 shows an embodiment of the display device 700 according to the present embodiment. In the present embodiment, the display device 700 is installed at a position within the field of view of the driver driving the automobile MV. The display device 700 serves as a road information display device that visually provides the driver with road information regarding the occurrence of an accident, congestion status, traffic regulation, weather, etc. as an image.

When the display device 700 is located ahead of a driver traveling downhill, the driver looks down on the display device 700. Even in that case, the display device 700 can provide the driver with road information with a particularly good contrast in a range of a depression angle of 5 ° or less.

Further, the display device 700 may be looked up by a driver traveling in the vicinity of the display device 700. Even in that case, the display device 700 can provide the driver with road information in a range of an elevation angle of 13 ° or less with particularly good contrast.

[Embodiment 7]
In any of the configurations of the first to sixth embodiments, the case main body 310 may be provided with a configuration for suppressing reflection of external light. Hereinafter, a specific example will be described in which a configuration for suppressing reflection of external light is added to the case main body 310 according to the sixth embodiment.

As shown in FIG. 14, in the present embodiment, the lens case 300 has an AR coating (Anti Reflection Coating) 331 formed on the surface of the case body 310. The AR coating 331 is an example of an antireflection portion that lowers the reflectance to external light incident from the outside through the opening 420 as compared with the lens portion 320. The AR coating 331 is formed over the entire surface of the case body 310.

The external light reflected on the surface of the AR coating 331 attenuates the external light reflected at the interface between the AR coating 331 and the case body 310 by interference. Therefore, depending on the viewing angle of the display screen 710 shown in FIG. 1, the contrast of the image can be further improved even when the AR coating 331 is visible from the opening 420.

[Embodiment 8]
In the above embodiment 7, the AR coating 331 is formed as the reflection suppressing portion, but instead of the reflection suppressing portion, a scattering portion that scatters external light may be formed. A specific example will be described below.

As shown in FIG. 15, in the present embodiment, a roughened portion 332 having a larger surface roughness than the surface of the lens portion 320 is formed on the surface of the case main body portion 310. The roughened portion 332 is formed by a sandblasting treatment as a roughening treatment, and is an example of a scattering portion that scatters external light.

According to this embodiment, the external light incident on the roughened portion 332 is scattered in the roughened portion 332. Therefore, the external light incident on the roughened portion 332 is hard to be strongly reflected in a specific direction. Therefore, depending on the viewing angle of the display screen 710 shown in FIG. 1, the contrast of the image can be further improved even when the roughened portion 332 is visible from the opening 420.

The first to eighth embodiments have been described above. The present invention is not limited to this, and the modifications described below are also possible.

In the first embodiment, as shown in FIG. 4, the case where the opening 420 is formed in a circular shape when viewed from a line of sight parallel to the Z axis has been described, but the opening 420 is parallel to the Z axis. It may be formed in an elliptical shape when viewed from the line of sight. Further, in the first embodiment, as shown in FIG. 4, the case where the lens portion 320 is formed in an elliptical shape when viewed from a line of sight parallel to the Z axis has been described, but the lens portion 320 is formed on the Z axis. It may be formed in a circular shape when viewed from a parallel line of sight.

In the first embodiment, as shown in FIG. 5, a distance equal to or higher than the height of the lens portion 320 is secured between the light-shielding main body 410 and the case main body 310, and the lens 320 has an opening 420. An example of a configuration that does not protrude into. The distance between the light-shielding main body 410 and the case main body 310 may be less than the height of the lens 320, and the lens 320 may protrude into the opening 420.

In the fourth and fifth embodiments, as shown in FIGS. 9 and 11, a distance equal to or higher than the height of the lens portion 320 is secured between the light-shielding main body portion 410 and the case main body portion 310, and the lens portion is provided. The configuration in which the 320 does not protrude into the opening 420 is illustrated. The distance between the light-shielding main body 410 and the case main body 310 may be less than the height of the lens 320, and the lens 320 may protrude into the opening 420. Further, in the configurations according to the fourth and fifth embodiments, there may be no space between the light-shielding main body 410 and the case main body 310, and the light-shielding main body 410 and the case main body 310 may be in contact with each other.

In the above embodiments 7 and 8, a specific example in which the AR coating 331 or the roughened portion 332 is added to the configuration of the sixth embodiment has been described, but the AR coating 331 or the roughened portion 332 is the embodiment 1-5. It may be added to the configuration of.

In the above embodiments 7 and 8, the configuration in which the AR coating 331 or the roughened portion 332 is formed on the entire surface of the case main body 310 is illustrated, but the AR coating 331 or the roughened portion 332 is the case main body. It may be formed only in the region of 310 around the lens portion 320.

In the seventh embodiment, the AR coating 331 that transmits the external light and attenuates the external light by interference is exemplified as the reflection suppressing unit that lowers the reflectance to the external light more than the lens unit 320. As the reflection suppressing portion, one that is opaque to external light and has a reflectance smaller than the surface of the lens portion 320, specifically, a black paint may be used.

In the eighth embodiment, the roughening unit 332 is exemplified as a scattering unit that scatters external light. The roughened portion 332 may be a matte-treated portion or a diffraction grating. The diffraction grating may be composed of a one-dimensional ridge and a trench, or may be composed of a two-dimensional ridge and a trench. Further, the roughened portion 332 may be formed by mechanical processing or may be formed by chemical etching.

FIG. 2 illustrates the eaves 430 extending in the X-axis direction in a plan view parallel to the Z axis, but the eaves 430 surrounds each opening 420 in a plan view parallel to the Z axis. May be good. Specifically, the eaves portion 430 may extend in a grid pattern in the X-axis direction and the Y-axis direction in a plan view parallel to the Z-axis.

FIG. 2 illustrates a configuration in which a plurality of light emitting devices 100 are arranged in a matrix on a circuit board 200. The plurality of light emitting devices 100 may be arranged two-dimensionally on the circuit board 200, and do not necessarily have to be arranged in a matrix.

In the above embodiment 1-8, the configuration in which the light emitting device 100 emits visible light by the light emitting diode is illustrated, but the light emitting device 100 may emit visible light by an element that produces organic electroluminescence.

100 ... light emitting device, 110R ... red LED, 110G ... green LED, 110B ... blue LED, 120 ... package member, 130 ... lead frame, 140 ... sealing material, 200 ... circuit board, 300 ... lens case, 310 ... case body Part, 320 ... Lens part, 320e ... Outer edge, 331 ... AR coating (reflection suppression part), 332 ... Roughening part (scattering part), 400 ... Shading member, 410 ... Shading body part, 420 ... Opening, 430 ... Eaves Unit, 500 ... Display unit, 600 ... Frame, 700 ... Display device, 710 ... Display screen, CA ... Center of opening, CB ... Center of lens, MV ... Automobile, NL ... Normal, VLA ... First virtual line of sight Axis, VLB ... Second virtual line-of-sight axis.

Claims (11)

A display unit that constitutes a part of the display screen that displays images.
Multiple light emitting devices, each of which emits visible light,
A circuit board in which a plurality of the light emitting devices are distributed and arranged in two dimensions,
It has a plate-shaped case main body portion facing the circuit board and a lens portion of the case main body portion provided at a position facing each of the plurality of light emitting devices, and each of the lens portions is self-contained. A lens case that adjusts the directivity of the visible light emitted by the light emitting device facing the
It is arranged at a position facing the lens case, and has a plate-shaped light-shielding main body portion that blocks external light that tends to enter the lens case from the outside toward the circuit board. An opening through which the visible light whose directivity is adjusted in each of the lens portions is formed for each light emitting device, and a light-shielding member.
With
A space is secured between the light-shielding main body and the case main body.
The size of each of the openings in the vertical direction on the display screen corresponds to the vertical direction of the lens portion that adjusts the directivity of the visible light passing through the openings. Less than or equal to the size of the direction,
Display unit. A display unit that constitutes a part of the display screen that displays images.
Multiple light emitting devices, each of which emits visible light,
A circuit board in which a plurality of the light emitting devices are distributed and arranged in two dimensions,
It has a plate-shaped case main body portion facing the circuit board and a lens portion of the case main body portion provided at a position facing each of the plurality of light emitting devices, and each of the lens portions is self-contained. A lens case that adjusts the directivity of the visible light emitted by the light emitting device facing the
It is arranged at a position facing the lens case, and has a plate-shaped light-shielding main body portion that blocks external light that tends to enter the lens case from the outside toward the circuit board. An opening through which the visible light whose directivity is adjusted in each of the lens portions is formed for each light emitting device, and a light-shielding member.
With
The center position of each of the openings in a plane parallel to the display screen is in a plane parallel to the display screen of the lens portion that adjusts the directivity of the visible light passing through the openings. It is deviated from the center position in the direction corresponding to the lower part on the display screen or the direction corresponding to the upper part on the display screen.
Display unit. When the display screen is viewed in the direction of the line of sight of an observer looking up at an elevation angle of 13 ° or less, a portion of the case body portion corresponding to the upper part of each of the lens portions on the display screen is shaded. It looks like it is covered by the main body,
The display unit according to claim 2. When the display screen is viewed in the direction of the observer's line of sight looking down at a depression angle of 5 ° or less, the portion of the case main body corresponding to the lower part of each of the lens portions on the display screen is shaded. It looks like it is covered by the main body,
The display unit according to claim 2 or 3. A space is secured between the light-shielding main body and the case main body.
The display unit according to any one of claims 2 to 4. A reflection suppressing portion that suppresses the reflection of the external light or a scattering portion that scatters the external light is formed in at least a region around the lens portion of the case main body portion.
The display unit according to any one of claims 1 to 5. The opening is formed in a circular or elliptical shape when viewed with a line of sight parallel to the normal to the display screen.
The lens portion is formed in a circular or elliptical shape when viewed from a line of sight parallel to the normal line.
The display unit according to any one of claims 1 to 6. The size of each of the openings in the direction corresponding to the left-right direction on the display screen corresponds to the left-right direction of the lens portion that adjusts the directivity of the visible light passing through the opening. Less than or equal to the size of the direction,
The display unit according to any one of claims 1 to 7. A display unit that constitutes a part of the display screen that displays images.
Multiple light emitting devices, each of which emits visible light,
A circuit board in which a plurality of the light emitting devices are distributed and arranged in two dimensions,
It has a plate-shaped case main body portion facing the circuit board and a lens portion of the case main body portion provided at a position facing each of the plurality of light emitting devices, and each of the lens portions is self-contained. A lens case that adjusts the directivity of the visible light emitted by the light emitting device facing the
It is arranged at a position facing the lens case, and has a plate-shaped light-shielding main body portion that blocks external light that tends to enter the lens case from the outside toward the circuit board. An opening through which the visible light whose directivity is adjusted in each of the lens portions is formed for each light emitting device, and a light-shielding member.
With
A space is secured between the light-shielding main body and the case main body.
Display unit. Each of the lens portions has a shape that is raised in a direction from the case main body to the light-shielding member with respect to the surface of the case main body facing the light-shielding member.
The distance between the light-shielding main body and the case main body is equal to or greater than the height of each of the lens portions from the surface of the case main body.
The display unit according to claim 9. A plurality of display units according to any one of claims 1 to 10 are provided.
An image is displayed on the display screen in which a plurality of the display units are arranged.
Display device.