Display apparatus

• US 10,451,794 B2
• Filed: 04/16/2014
• Issued: 10/22/2019
• Est. Priority Date: 04/16/2014
• Status: Active Grant

• Current Assignee: Sakai Display Products Corporation (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sakai Display Products Corporation (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Sasaki, Tomoo
• Primary Examiner(s): Kelly, Rafferty D
• Application Number:
  US15/126,256
• Publication Number:
  US 20170090109A1
• Time in Patent Office: 2,015 Days
• Field of Search: 362615
• CPC Class Codes: G02B 6/0085 Means for removing heat created by the light source from the package heat extraction or cooling elements for semiconductor light sources in general H01L33/64
• CPC Class Codes: G02F 1/1336 Illuminating devices
• CPC Class Codes: G02F 1/133615 Edge-illuminating devices, i.e. illuminating from the side
• CPC Class Codes: G02F 1/133628 with cooling means

Abstract

The present invention provides a display apparatus capable of exhibiting excellent heat dissipation properties with a simpler structure, and increasing productivity of products by reducing the number of components. In a television receiving apparatus (100) which includes a light guide plate (5) configured to emit light from one surface thereof, the light entering a side surface of the light guide plate (5), and displays an image by the light emitted from the light guide plate (5), the television receiving apparatus (100) includes a heat absorption plate (6) which is integrally molded with the light guide plate (5), wherein one surface of the heat absorption plate (6) contacts with the other surface of the light guide plate (5), such that the heat absorption plate (6) absorbs heat emitted by the light guide plate (5).

Claims

1. A display apparatus which includes a light guide plate configured to emit light from a front surface thereof, the light entering a side surface of the light guide plate, and displays an image by the light from the light guide plate, comprising:

a heat absorption plate which is integrally molded with the light guide plate, and is configured so that a front surface of the heat absorption plate contacts with a rear surface of the light guide plate to absorb heat from the light guide plate,

wherein the heat absorption plate has a convex part and a concave part on a rear surface of the heat absorption plate, and a first hollow portion is sealed inside the convex part without an opening facing the rear of the display apparatus,

an optical sheet having a rear surface which faces the front surface of the light guide plate; and

an interval holding part which is provided at edge portion of the front surface of the light guide plate, and is configured to hold an interval between the front surface of the light guide plate and the rear surface of the optical sheet,

wherein a second hollow portion is sealed inside the interval holding part.

2. The display apparatus according to claim 1, comprising:

a display panel configured to display an image using the light entering through the optical sheet,

wherein the interval holding part is configured so as to hold an interval between the front surface of the optical sheet and a rear surface of the display panel.

3. The display apparatus according to claim 1, wherein the interval holding part, the light guide plate, and the heat absorption plate are integrally molded.

4. The display apparatus according to claim 1, wherein the convex part of the heat absorption plate is provided on the edge portion relating to the one side surface of the light guide plate.

5. The display apparatus according to claim 1, wherein coolant is injected into the first hollow portion sealed inside the convex part of the heat absorption plate.

6. The display apparatus according to claim 1, comprising:

a light source provided in the vicinity of one side surface of the light guide plate,

wherein the light source has light emitting elements and a substrate of which a front surface mounts the light emitting elements,

a hollow heat absorption part configured to absorb heat from the substrate is provided as to facing a rear surface of the substrate, and

the heat absorption part is integrally molded with the heat absorption plate.

7. The display apparatus according to claim 1, wherein the front surface of the heat absorption plate has a white color.

8. The display apparatus according to claim 1, comprising a heat dissipation plate which contacts with the rear surface of the heat absorption plate.

9. A display apparatus which includes a light guide plate configured to emit light from a front surface thereof, the light entering a side surface of the light guide plate, and displays an image by the light from the light guide plate, comprising:

a heat absorption plate which is integrally molded with the light guide plate, and is configured so that a front surface of the heat absorption plate contacts with a rear surface of the light guide plate to absorb heat from the light guide plate,

wherein the heat absorption plate has a convex part and a concave part on a rear surface of the heat absorption plate, and a hollow portion is sealed inside the convex part,

a light source provided in the vicinity of one side surface of the light guide plate,

wherein the light source has light emitting elements and a substrate of which a front surface mounts the light emitting elements,

a hollow heat absorption part configured to absorb heat from the substrate is provided as to facing a rear surface of the substrate, and

the heat absorption part is integrally molded with the heat absorption plate.

10. The display apparatus according to claim 9, comprising:

an optical sheet having a rear surface which faces the front surface of the light guide plate; and

an interval holding part which is provided at edge portion of the front surface of the light guide plate, and is configured to hold an interval between the front surface of the light guide plate and a rear surface of the optical sheet,

wherein a hollow portion is sealed inside the interval holding part.

11. The display apparatus according to claim 10, comprising:

a display panel configured to display an image using the light entering through the optical sheet,

wherein the interval holding part is configured so as to hold an interval between the front surface of the optical sheet and a rear surface of the display panel.

12. The display apparatus according to claim 10, wherein the interval holding part, the light guide plate, and the heat absorption plate are integrally molded.

13. The display apparatus according to claim 9, wherein the convex part of the heat absorption plate is provided on the edge portion relating to the one side surface of the light guide plate.

14. The display apparatus according to claim 9, wherein coolant is injected into the hollow portion sealed inside the convex part of the heat absorption plate.

15. The display apparatus according to claim 9, wherein the front surface of the heat absorption plate has a white color.

16. The display apparatus according to claim 9, comprising a heat dissipation plate which contacts with the rear surface of the heat absorption plate.