DISPLAY APPARATUS

• US 20140247620A1
• Filed: 02/19/2014
• Published: 09/04/2014
• Est. Priority Date: 03/01/2013
• Status: Abandoned Application

• Current Assignee: Funai Electric Co., Ltd. (Funai Electric Holdings Company Limited)
• Original Assignee: Funai Electric Co., Ltd. (Funai Electric Holdings Company Limited)
• Inventors: SASAOKA, Hiromasa, HONGO, Naoki
• Application Number:
  US14/183,585
• Publication Number:
  US 20140247620A1
• Time in Patent Office: Days
• US Class Current: 362/611
• 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

Abstract

A display apparatus includes an LCD panel, a resin rear cabinet facing a back of the LCD panel, and a backlight unit that is supported by the rear cabinet. The backlight unit includes a light source, a light guide plate into which light from the light source enters through a side surface and exits through a main surface toward the back of the LCD panel, and a heat sink supported by the rear cabinet and attached to the light source. The rear cabinet includes an integrally formed resin protrusion passing through the heat sink and supporting the light guide plate, and positioning of the light source is determined by a contact surface thereof with the heat sink and positioning of the light guide plate is determined by a contact surface thereof with the protrusion so that optical axes of the light source and the light guide plate are aligned.

Claims

1. A display apparatus comprising:

a display panel;

a resin support member facing a back surface of the display panel; and

a backlight unit that is supported by the support member and emits light toward the back surface of the display panel, the backlight unit including;

a light source that generates the light;

a light guide plate including a side surface through which the light generated by the light source enters and a main surface through which the light entering through the side surface exits toward the back surface of the display panel; and

a heat sink supported by the support member and to which the light source is attached,

wherein the support member includes an integrally formed resin protrusion passing through the heat sink and supporting the light guide plate, and

positioning of the light source is determined by a contact surface thereof with the heat sink and positioning of the light guide plate is determined by a contact surface thereof with the protrusion so that optical axes of the light source and the light guide plate are aligned.

2. The display apparatus according to claim 1,

wherein the heat sink includes:

a heat dissipation portion supported by the support member; and

an attachment portion that extends from an end portion of the heat dissipation portion toward the display panel and to which the light source is attached,

the protrusion passes through the heat dissipation portion and supports the light guide plate, and

positioning of the light source is determined by a contact surface thereof with the heat dissipation portion.

3. The display apparatus according to claim 1,

wherein the protrusion includes a spacer disposed between the light source and the side surface of the light guide plate.

4. The display apparatus according to claim 1,

wherein the protrusion has a surface in contact with the light guide plate, and at least a portion of an edge of the surface is rounded.

5. The display apparatus according to claim 1,

wherein the support member includes a plurality of the protrusions, and

the plurality of the protrusions are spaced apart from each other.

6. The display apparatus according to claim 5,

wherein a bend preventing member for preventing the light guide plate from bending toward the heat sink is provided on the heat sink between two adjacent ones of the plurality of the protrusions.

7. The display apparatus according to claim 1, further comprising

a housing containing the display panel and the backlight unit,

wherein the housing includes:

a front cabinet arranged on a side of the display apparatus that the display panel is situated; and

a rear cabinet arranged on a side of the display apparatus that the backlight unit is situated, and

the support member the rear cabinet.