Display device

Patent metadata

Field	Value
Publication number	US-10485147-B2
Application number	US-201815906395-A
Country	US
Kind code	B2
Filing date	Feb 27, 2018
Priority date	Apr 23, 2017
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

A display device is provided to achieve air circulation through an inner structure or an outer structure of the display device for efficient heat dissipation. The display device includes a housing, a display module mounted in the housing, a closed-loop air circulation system, and an open-loop air circulation system. The closed-loop air circulation system includes a first channel defined between a front surface of the display module and a front surface of the housing so as to extend along the front surface of the display module, and a second channel defined between one side surface of the display module and one side surface of the housing that is opposite the one side surface of the display module. The first channel is configured to receive air from a first end of the second channel and to discharge the air to a second end of the second channel.

First claim

What is claimed is:

1. A display device comprising:
a housing;
a display module mounted in the housing;
a closed-loop air circulation system; and
an open-loop air circulation system, wherein
the closed-loop air circulation system comprises:
a first channel defined between a front surface of the display module and a front surface of the housing so as to extend along the front surface of the display module; and
a second channel defined between one side surface of the display module and one side surface of the housing that is opposite the one side surface of the display module so as to extend along the one side surface of the display module in a longitudinal direction thereof,
the first channel being configured to receive air from a first end of the second channel and to discharge the air to a second end of the second channel, and wherein
the open-loop air circulation system comprises:
a third channel isolated from the first channel and the second channel;
an inlet port for receiving air from an outside through the third channel; and
an outlet port for discharging the air to the outside through the third channel.

2. The display device according to claim 1 , wherein
the housing comprises a window for covering at least a portion of the front surface of the display module, and
the first channel is defined between the window and the front surface of the display module.

3. The display device according to claim 1 , further comprising at least one fan provided at an upper part or a lower part of the display module such that the first channel receives air and discharges the received air to the second channel.

4. The display device according to claim 1 , wherein the closed-loop air circulation system is a first closed-loop air circulation system, and wherein the display device further comprises a second closed-loop air circulation system provided at a rear of the first closed-loop air circulation system.

5. The display device according to claim 4 , further comprising a diaphragm bracket for partitioning the first closed-loop air circulation system and the second closed-loop air circulation system from each other.

6. The display device according to claim 1 , further comprising a heat exchanger for transferring heat from the closed-loop air circulation system to the open-loop air circulation system.

7. The display device according to claim 6 , further comprising a front guide bracket for guiding air such that the air is introduced into the second channel from the first channel and such that the air from the second channel is introduced into the heat exchanger.

8. The display device according to claim 7 , wherein the heat exchanger comprises an auxiliary guide bracket for guiding the air introduced from the second channel so as to discharge the same to the first channel.

9. The display device according to claim 6 , wherein the heat exchanger is any one of a heat pipe type heat exchanger, a water-cooling type heat exchanger, a thermoelectric module type heat exchanger, and a loop heat pipe type heat exchanger.

10. The display device according to claim 1 , wherein the closed-loop air circulation system is hermetically isolated from the open-loop air circulation system.

11. The display device according to claim 1 , wherein
the display module comprises a rear surface, which is opposite the front surface, an upper surface, a lower surface, which defines an inside of the upper surface, a first side surface, and a second side surface, which is opposite the first side surface, and wherein
the second channel is provided at the first side surface and the second side surface of the display module so as to extend along the side surfaces of the display module.

Assignees

• Lg Electronics Inc

Inventors

• Oh Honglyeol
• Oh Sangjoon
• Han Byoungwook
• Kim Joongnyon

Classifications

• H05K7/2099

  Liquid coolant with phase change · CPC title

• G02F1/133308

  Support structures for LCD panels, e.g. frames or bezels · CPC title

• H05K7/20336

  Heat pipes, e.g. wicks or capillary pumps · CPC title

• H05K7/20136

  Forced ventilation, e.g. by fans (H05K7/202 takes precedence) · CPC title

• G02F1/133504

  Diffusing, scattering, diffracting elements (associated to illuminating devices G02F1/133606) · CPC title