JP7494063B2 - Display device - Google Patents

Description

The present invention relates to a display device.

There are display devices that are operated by receiving infrared signal light output from a remote controller (hereafter abbreviated as "remote control"). One example is a television device (hereafter abbreviated as "television"). Televisions are equipped with a light receiving unit that receives infrared signal light from the remote control.

As an example of such a conventional technique, Patent Document 1 discloses a display device that includes a display unit that displays an image on its front surface, a box body with an open surface arranged on the rear side of the display unit, a frame body that covers the front peripheral portion and peripheral side portion of the display unit and connects to the box body, a substrate having a light-emitting portion that emits light to the outside of the device and a light-receiving portion that receives an operation signal from a remote control device, and a light-guiding member that fixes the substrate and has a first light-guiding portion that guides the light emitted by the light-emitting portion to the outside and a second light-guiding portion that guides the operation signal to the light-receiving portion and is fixed to the frame body.

JP 2017-005348 A

The above-mentioned conventional technology has room for the light-guiding member to function normally.

One aspect of the present invention was made in consideration of the above problems, and its purpose is to allow the light guide section of the display device to function normally.

In order to solve the above-mentioned problems, a display device according to one embodiment of the present invention comprises a cabinet having a display unit, a bottom portion arranged below the display unit, a front portion adjacent to the bottom portion and having a through hole, and an extension portion extending from the front portion toward a rear side of the display unit, a main body portion arranged on the rear side of the cabinet, and a light guide unit having a protrusion portion protruding from the main body portion through the through hole toward the display surface side, and a substrate holder arranged on the rear side of the light guide unit and on which a substrate is mounted, wherein the extension portion abuts against an upper end of the substrate holder or an upper end of the main body portion.

According to one aspect of the present invention, the light guide section of the display device can function normally.

1 is a front view showing an external appearance of a display device according to a first embodiment of the present invention. 4 is an enlarged view showing the periphery of a light guide unit in the display device. FIG. FIG. 2 is a diagram partially illustrating the inside of the display device. FIG. 2 is a diagram partially illustrating the inside of the display device. FIG. 2 is a diagram partially illustrating the inside of the display device. FIG. 2 is a diagram partially illustrating the inside of the display device. FIG. 2 is a diagram partially illustrating the inside of the display device. FIG. 2 is a cross-sectional view showing an internal cross section of the display device. FIG. 11 is a diagram partially illustrating the inside of a display device according to a second embodiment. FIG. 11 is a cross-sectional view showing a cross section of a display device according to a second embodiment. FIG. 11 is a diagram showing the inside of a display device according to a third embodiment. FIG. 2 is a diagram showing the inside of the display device. FIG. 13 is a diagram partially illustrating the inside of a display device according to a fourth embodiment. FIG. 2 is a diagram partially illustrating the inside of the display device. FIG. 2 is a diagram partially illustrating the inside of the display device. FIG. 2 is a cross-sectional view showing an internal cross section of the display device. 11A and 11B are diagrams illustrating examples of successful and unsuccessful mounting of a light guiding unit.

[Embodiment 1]
(Configuration of Display Device 1)
1 is a front view showing the appearance of a display device 1 according to a first embodiment of the present invention. The display device 1 is a device that can be operated by infrared light output from a remote controller. In this embodiment, the display device 1 is realized as an organic EL television device, but is not limited thereto, and can also be realized as various devices having a display function, such as a PC monitor.

As shown in FIG. 1, the display device 1 mainly comprises a display unit 2, a front cabinet 4 (cabinet), and a light guide unit 6. The display unit 2 is a display panel that displays various images, and is realized, for example, as an organic EL display panel. The front cabinet 4 is one of the components that constitutes the housing unit that stores various parts such as the display unit 2 inside the display device 1, and is the front cabinet 4 that is located at the front (display surface side) of the housing. Although not shown and not described, the front cabinet 4 constitutes the housing unit together with the back cabinet that covers the back side of the display unit 2. The light guide unit 6 is located below the display unit 2 in the front cabinet 4.

2 is an enlarged view of the periphery of the light guide 6 in the display device 1. As shown in this figure, a part of the light guide 6 is exposed on the surface of the front cabinet 4, and each part has a function of receiving or emitting light. In the example of FIG. 2, the light guide 6 includes a light receiving part 11 (protruding part), a light emitting part 12 (protruding part), and a light emitting part 13 (protruding part). The light receiving part 11 is a part that performs the light receiving function of the light guide 6, and the light emitting part 12 and the light emitting part 13 are parts that perform the light emitting function of the light guide 6. Specifically, the light receiving part 11 receives infrared light from the remote control. The light emitting part 12 and the light emitting part 13 emit visible light that indicates the operating state of the display device 1. Examples of the operating state include a state in which the display device 1 is operating, or a state in which the display device 1 is in standby.

Figure 3 is a diagram partially showing the inside of the display device 1. As shown in this figure, the display device 1 includes a display unit 2, a front cabinet 4, a light guide unit 6, a board holder 8, and a board 10. Figure 3 illustrates the inside of the display device 1 with the light guide unit 6, board holder 8, and board 10 each unfolded.

The front cabinet 4 has at least a bottom surface portion 21, a front surface portion 22, and an extension portion 23. The bottom surface portion 21 is disposed below the display unit 2 and approximately parallel to the placement surface of the display device 1. The front surface portion 22 is adjacent to the bottom surface portion 21 and disposed above the bottom surface portion 21 and parallel to the display surface of the display unit 2. In this embodiment, the lower end edge of the front surface portion 22 is connected to the front end edge of the bottom surface portion 21. The front surface portion 22 has a through hole 24, a through hole 25, and a through hole 26 that penetrate the front surface portion 22. The light receiving portion 11, the light emitting portion 12, and the light emitting portion 13, which are parts of the light guide portion 6, are individually inserted into the through hole 24, the through hole 25, and the through hole 26.

The extension portion 23 has an elongated shape overall, and extends from a predetermined position on the front surface portion 22 toward a predetermined position on the rear surface side of the display unit 2. The extension portion 23 has an engagement portion 27 that engages with the board holder 8. In the example of Fig. 3, the hook-shaped engagement portion 27 is disposed at the tip of the extension portion 23. The engagement portion 27 protrudes from the tip of the extension portion 23 toward the bottom surface portion 21 of the front cabinet 4.

The light guide section 6 is made of a material that transmits light, such as translucent plastic. The light guide section 6 includes a main body section 14, a light receiving section 11, a light emitting section 12, and a light emitting section 13. The main body section 14 is disposed on the rear surface of the front cabinet 4, and extends in the lateral direction of the display surface of the display device 1. The light receiving section 11, the light emitting section 12, and the light emitting section 13 all protrude from the main body section 14 towards the display surface side of the display section 2.

The substrate holder 8 is a holder having a substrate mounting surface on which the substrate 10 is mounted. The substrate holder 8 is disposed on the rear surface of the light guide 6 inside the display device 1. The substrate holder 8 holds the substrate 10 mounted on the substrate mounting surface. The substrate 10 has a light emitting element and a light receiving element (not shown) that correspond to the light emitting function and the light receiving function of the light guide 6.

(Assembly of the display device 1)
4 is a diagram partially illustrating the inside of the display device 1. When assembling the display device 1, a procedure of mounting the light guide unit 6, the board holder 8, and the board 10 to the front cabinet 4 is required at a certain stage. At that time, as shown in FIG. 4, the light guide unit 6 is first mounted to the front cabinet 4. Specifically, the light receiving unit 11, the light emitting unit 12, and the light emitting unit 13 of the light guide unit 6 are individually inserted into the corresponding through holes 24, 25, and 26 of the front cabinet 4, and the light guide unit 6 is fitted into the front part 22 of the front cabinet 4. At that time, the light guide unit 6 is fitted into the front cabinet 4 with the lower part of the light guide unit 6 abutting against the bottom part 21 of the front cabinet 4.

5 is a diagram partially showing the inside of the display device 1. As shown in this figure, after the light guide section 6 is attached, the board holder 8 is attached to the front cabinet 4 at a position on the rear side of the light guide section 6. At this time, the board holder 8 is brought closer to the light guide section 6 so that the extension section 23 abuts against the upper end of the board holder 8. When the board holder 8 is pushed into a position where the board holder 8 properly engages with the engagement section 27, the attachment of the board holder 8 is completed. In this state, the welding pins 31 and 32 of the front cabinet 4 are inserted into the pin holes of the board holder 8 and protrude above the board mounting surface of the board 10.

Figure 6 is a diagram partially showing the inside of the display device 1. As shown in this figure, after the substrate holder 8 is attached, both the welding pin 31 and the welding pin 32 are welded to the substrate mounting surface of the substrate holder 8. Figure 7 is a diagram partially showing the inside of the display device 1. As shown in this figure, after the substrate holder 8 is fixed, the substrate 10 is mounted on the substrate mounting surface of the substrate holder 8. The mounting method is a common one, so a detailed explanation will be omitted. This completes the installation of the light guide section 6, substrate holder 8, and substrate 10.

8 is a cross-sectional view showing an internal cross section of the display device 1. As shown in this figure, in the display device 1 to which the light guide 6, the substrate holder 8, and the substrate 10 are attached, the extension 23 abuts against the upper end of the substrate holder 8. Furthermore, the engagement portion 27 of the extension 23 engages with the substrate mounting surface of the substrate holder 8.

(Advantages of this embodiment)
When the display device 1 is assembled, the light guide 6 is disposed on the bottom surface 21 of the front cabinet 4. When the protruding portion of the light guide 6 passes through the through hole of the front cabinet 4, the bottom surface 21 of the front cabinet 4 is located below the lower end of the light guide 6. Furthermore, the extension portion 23 abuts against the upper end of the board holder 8. In this manner, in a state in which the light guide 6 is covered by the bottom surface 21 and the extension portion 23 of the front cabinet 4, the light receiving portion 11, the light emitting portion 12, and the light emitting portion 13 of the light guide 6 abut against the respective peripheries of the through holes 24, 25, and 26. When the light guide 6 is attached, the light receiving portion 11, the light emitting portion 12, and the light emitting portion 13 of the light guide 6 press the front surface 22 of the front cabinet 4, which causes the front surface 22 of the front cabinet 4 to tilt due to stress. However, at this time, the front surface 22 of the front cabinet 4 does not tilt because the bottom and the extension 23 of the front cabinet 4 cause the light guide 6 to face the stress directed in a direction other than the front surface 22 of the front cabinet 4. This makes it possible to prevent the occurrence of mounting errors in the light guide 6, allowing the light guide 6 to normally perform its light receiving function and light emitting function.

When mounting the light guide 6 and the board holder 8 on the front cabinet 4, if the board holder 8 is fitted at a position where the board holder 8 is properly engaged with the engagement portion 27, the light guide 6 and the board holder 8 can be mounted on the front cabinet 4 at a correct angle. This allows the light guide 6 to be mounted on the front cabinet 4 without causing a mounting error of the light guide 6 when assembling the display device 1. As a result, the light receiving portion 11, the light emitting portion 12, and the light emitting portion 13 are sufficiently well exposed on the front surface portion 22 of the front cabinet 4 without being recessed deeper than the surface of the front cabinet 4. As a result, the light guide 6 can normally perform its original light receiving function and light emitting function in the display device 1 during operation.

[Embodiment 2]
9 is a diagram partially showing the inside of the display device 1A according to the second embodiment. As shown in this figure, in this embodiment, the display device 1A includes a front cabinet 4A having two extension parts 41 and 42 arranged at different positions. In the example of FIG. 9, the extension part 41 is arranged above the corresponding through hole 24, and the extension part 42 is arranged above the corresponding through hole 25. The extension part 41 has an engagement part 43 arranged at its tip, and the extension part 42 has an engagement part 44 arranged at its tip. The structure and extension direction of the extension part 41 and the extension part 42 are the same as the structure and extension direction of the extension part 23 according to the first embodiment.

10 is a cross-sectional view showing a cross section of the display device 1A according to the second embodiment. As shown in this figure, the extension 41 is disposed above the light receiving portion 11 of the light guide portion 6 and abuts against the upper portion of the substrate holder 8. The engagement portion 43 engages with the substrate holder 8 above the light receiving portion 11. Although not shown, the extension 42 is disposed above the light emitting portion 12 of the light guide portion 6 and abuts against the upper portion of the substrate holder 8. The engagement portion 44 engages with the substrate holder 8 above the light emitting portion 12. Thus, in this embodiment, the substrate holder 8 abuts against the two extensions 41 and 42. Furthermore, the substrate holder 8 engages with the two engagement portions 43 and 44.

In this embodiment, when a user presses the light receiving unit 11 exposed from the through hole 24, the force acting on the portion of the light guiding unit 6 pressed by the user is offset by the engagement portion 43 of the extension portion 41 located at the upper part of the through hole 24. This makes it possible to more effectively prevent the light guiding unit 6 from moving inside the display device 1. Similarly, when a user presses the light emitting unit 12 exposed from the through hole 25, the force acting on the portion of the light guiding unit 6 pressed by the user is offset by the engagement portion 44 of the extension portion 42 located at the upper part of the through hole 25. This makes it possible to more effectively prevent the light guiding unit 6 from moving inside the display device 1.

Furthermore, in this embodiment, the substrate holder 8 is supported by the two extensions 41 and 42, so that the light guide section 6 arranged in front of the substrate holder 8 can be more firmly fixed to the front cabinet 4A.

In this embodiment, the front cabinet 4A may have two extensions 41 and 42 that are arranged above a position different from the through hole 24 or the through hole 25. Alternatively, the front cabinet 4A may have three or more extensions 23. In either case, the light guide 6 that is arranged in front of the substrate holder 8 can be more firmly fixed to the front cabinet 4A.

[Embodiment 3]
11 is a diagram showing the inside of the display device 1B according to the third embodiment. The display device 1B according to this embodiment includes a front cabinet 4B further having a side portion 51 (first side portion), a side portion 52 (second side portion), a rib 53 (first rib), and a rib 54 (second rib). Note that in the first and second embodiments, the front cabinet 4 (and the front cabinet 4A) also has the side portion 51 and the side portion 52, as in this embodiment. The reason why the side portion 51 and the side portion 52 are not mentioned in the embodiments other than this embodiment is simply that they are not necessary to mention in describing the features of the display device 1 according to these embodiments.

In the front cabinet 4B, the side portion 51 and the side portion 52 are disposed in positions facing each other and adjacent to the bottom portion 21 and the front portion 22. The rib 53 is disposed on the side portion 51 and protrudes from the side portion 51 toward the side portion 52. The rib 53 also abuts against the board mounting surface of the board holder 8 attached to the front cabinet 4B. The rib 54 is disposed on the side portion 52 and protrudes from the side portion 52 toward the side portion 51. The rib 54 also abuts against the board mounting surface of the board holder 8 attached to the front cabinet 4B. In this way, in the board holder 8 attached to the front cabinet 4B, both ends of the board holder 8 are supported by the ribs 53 and 54.

Figure 12 is a diagram showing the inside of the display device 1B. As shown in this figure, the front cabinet 4B does not have welding pins 31 and 32. Therefore, when assembling the display device 1B, no welding work is required after the board holder 8 is attached.

In this embodiment, the light guide 6 and the substrate holder 8 are supported by a plurality of structures including the extension 23, the ribs 53, and the ribs 54, so that the light guide 6 and the substrate holder 8 can be fixed more firmly. In addition, because the fixation by the extension 23, the ribs 53, and the ribs 54 is sufficiently strong, it is possible to eliminate the need to separately fix the substrate holder 8 to the front cabinet 4B by welding. Furthermore, the front cabinet 4B, which has a simple structure of the ribs 53 and 54, can have a simpler structure than the front cabinet 4A having the extensions 41 and 42 of embodiment 2.

[Embodiment 4]
13 is a diagram partially illustrating the inside of a display device 1C according to the fourth embodiment. As shown in this figure, the display device 1C according to the present embodiment has a light guide 6C that abuts against the extension 23. In the light guide 6C, a part of the central portion of the main body 14 of the light guide 6C protrudes toward the upper side of the light guide 6C more than other portions of the main body 14 that are different from the central portion. More specifically, the part of the central portion extends to a position where it abuts against the extension 23. In this way, in the present embodiment, the extension 23 abuts against the upper end of the main body 14.

The light guide 6C further includes an upper surface portion 15 in addition to the light receiver 11, the light emitter 12, and the light emitter 13. The upper surface portion 15 extends toward the inside of the display device 1C from the tip of the central portion of the main body 14, i.e., the abutting position with the extension portion 23. The upper surface portion 15 is disposed approximately parallel to the bottom surface portion 21 of the front cabinet 4. The extension portion 23 of the front cabinet 4B is disposed at the central position of the light guide 6C and abuts against the upper surface portion 15. The engagement portion 27 of the extension portion 23 engages with the tip portion of the upper surface portion 15. In this way, in this embodiment, the light guide 6C, not the board holder 8, engages with the engagement portion 27.

Figure 14 is a diagram partially showing the inside of display device 1C. As shown in this figure, display device 1C is equipped with a substrate holder 8C with a slight recess in the center. The structure of substrate holder 8C is basically the same as substrate holder 8 according to each of the other embodiments, but the center portion at its upper end is slightly recessed. The range of the recess is equal to or greater than the width of upper surface 15 of light guide 6C. The presence of such a recess makes it possible to prevent the upper portion of substrate holder 8 from colliding with upper surface 15 of light guide 6C when substrate holder 8 is attached.

FIG. 15 is a diagram partially showing the inside of the display device 1C. As shown in this figure, the method of mounting the substrate 10 to the substrate holder 8C is the same as in each of the above-mentioned embodiments, so detailed description will be omitted. FIG. 16 is a cross-sectional view showing a cross section of the inside of the display device 1C. As shown in this figure, in the display device 1C in which the light guide 6C, the substrate holder 8C, and the substrate 10 are mounted, the extension 23 abuts against the upper end of the main body 14 of the light guide 6C and the surface of the upper surface 15. Furthermore, the engagement portion 27 of the extension 23 engages with the upper surface 15 of the light guide 6C at its tip.

FIG. 17 is a diagram for explaining successful and unsuccessful examples of mounting of the light guide 6C. 1010 in FIG. 17 shows a correct mounting example of the light guide 6C, and 1020 and 1030 show examples of mounting errors of the light guide 6C. As shown in 1010 in this figure, if the light guide 6C is fitted into the front cabinet 4 so that the upper surface portion 15 of the light guide 6C is correctly engaged with the engagement portion 27, the light guide 6C can be mounted on the front cabinet 4 at a correct angle. In this case, the light receiving portion 11 of the light guide 6C is inserted straight into the through hole 24. In 1020 in FIG. 17, the upper surface portion 15 is caught by the engagement portion 27 and does not correctly engage , so that the mounting of the light guide 6C is incomplete. That is, the light receiving portion 11 does not reach the exposed surface of the through hole 24 and remains in a recessed position in the front cabinet 4. Therefore, a problem may occur in which the function of receiving infrared light from the remote control is reduced. 17, the light guide 6C is erroneously attached at an angle to the front surface 22 of the front cabinet 4, so that the tip of the light receiver 11 does not face the front direction of the display unit 2. In this case, as in the example shown in 1020, a problem may occur in which the function of receiving infrared light from the remote control is reduced.

〔summary〕
A display device according to aspect 1 of the present invention comprises a cabinet having a display unit, a bottom surface portion arranged below the display unit, a front surface portion adjacent to the bottom surface portion and having a through hole, and an extension portion extending from the front surface portion toward the rear surface side of the display unit, a main body portion arranged on the rear surface of the cabinet, and a light guide unit having a protrusion portion protruding from the main body portion through the through hole toward the display surface side of the display unit, and a substrate holder arranged on the rear surface of the light guide unit and on which a substrate is mounted, wherein the extension portion abuts against the upper end of the substrate holder or the upper end of the main body portion.

A display device according to a second aspect of the present invention is the display device according to the first aspect, wherein the extension abuts against an upper end of the substrate holder, and the extension has an engagement portion that engages with the substrate holder.

The display device according to aspect 3 of the present invention is the same as that of aspect 2, except that the extension portion is disposed above the through-hole.

The display device according to aspect 4 of the present invention is the display device according to any one of aspects 1 to 3, in which the cabinet has a plurality of the extensions.

The display device according to aspect 5 of the present invention is any one of aspects 1 to 4, wherein the cabinet further has a first side portion and a second side portion adjacent to the bottom portion, a first rib protruding from the first side portion toward the second side portion and abutting the substrate mounting surface of the substrate holder, and a second rib protruding from the second side portion toward the first side portion and abutting the substrate mounting surface of the substrate holder.

[Additional Notes]
The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. The technical scope of the present invention also includes embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Furthermore, new technical features can be formed by combining the technical means disclosed in the respective embodiments.

1, 1A, 1B, 1C Display device 2 Display section 4, 4A, 4B Front cabinet 6, 6C Light guide section 8, 8C Board holder 10 Board 11 Light receiving section 12, 13 Light emitting section 14 Main body section 15 Top surface section 21 Bottom surface section 22 Front surface section 23, 41, 42 Extension section 24, 25, 26 Through hole 27, 43, 44 Engagement section 31, 32 Welding pin 51, 52 Side surface section 53, 54 Rib

Claims (5)

A display unit;
a cabinet having a bottom surface portion disposed below the display unit, a front surface portion adjacent to the bottom surface portion and having a through hole, and an extension portion extending from the front surface portion toward a rear side of the display unit;
a light guide unit including a main body portion disposed on a rear surface of the cabinet and a protrusion portion protruding from the main body portion toward a display surface side of the display unit through the through hole;
a substrate holder disposed on a rear surface of the light guiding portion and on which a substrate is mounted;
the extension abuts against an upper end of the substrate holder or an upper end of the main body ,
the substrate holder has a substrate mounting surface on a rear side of the display unit, and is located closer to the display surface than the substrate and between the bottom surface portion and the extension portion;
A display device, characterized in that the substrate holder and the substrate are arranged parallel to the display section . the extension abuts against an upper end of the substrate holder,
The display device according to claim 1 , wherein the extending portion has an engaging portion that engages with the substrate holder. The display device according to claim 2, characterized in that the extension portion is disposed above the through hole. The display device according to any one of claims 1 to 3, characterized in that the cabinet has a plurality of the extensions. The cabinet comprises:
a first side portion and a second side portion adjacent to the bottom portion;
a first rib that protrudes from the first side surface portion toward the second side surface portion and abuts against a substrate mounting surface of the substrate holder;
The display device according to any one of claims 1 to 4, further comprising a second rib protruding from the second side portion toward the first side portion and abutting the substrate mounting surface of the substrate holder.

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