# US 2021/0176902 A1 · Display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0176902 A1 - Document ID: US20210176902A1 - Status: Published application - Kind: A1 - Application number: 16/769,072 - Filed: 2018-09-13 - Published: 2021-06-10 - Earliest claimed: 2017-12-22 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Sung Su LEE; Sung Ki KIM; Myeong Gil KIM; Hyun Jun JUNG - Web page: https://patentgrep.com/patent/US20210176902A1 ## CPC - G02F 1/133308: {Support structures for LCD panels, e.g. frames or bezels} - H05K 7/20972: {Forced ventilation, e.g. on heat dissipaters coupled to components} - G01K 1/02: Means for indicating or recording specially adapted for thermometers - G02F 1/133385: {with cooling means, e.g. fans} - G06F 1/20: Cooling means - G02F 1/133317: {Intermediate frames, e.g. between backlight housing and front frame} - G02F 1/133342: {for double-sided displays} - G02F 2201/36: Airflow channels, e.g. constructional arrangements facilitating the flow of air - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - G01K: MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (radiation pyrometry G01J5/00) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract An outdoor display apparatus having a heat dissipation structure includes a first display module configured to display an image in a first direction, a second display module configured to display an image in a second direction opposite to the first direction, a housing configured to accommodate the first display module and the second display module, and having an inlet and an outlet, and a heat exchange device configured to receive heat from one of the first display module and the second display module and perform heat exchange, wherein the heat exchange device includes: a first heat exchange portion having at least one cooling passage to cool the first display module; a second heat exchange portion having at least one cooling passage to cool the second display module; and a heat exchanger configured to be selectively shared by the first heat exchange portion and the second heat exchange portion. ## Claims ### Claim 1 A display apparatus comprising: a first display module configured to display an image in a first direction; a second display module configured to display an image in a second direction opposite to the first direction; a housing configured to accommodate the first display module and the second display module, and having an inlet and an outlet; and a heat exchange device configured to receive heat from one of the first display module and the second display module and perform heat exchange, wherein the heat exchange device comprises: a first heat exchange portion having at least one cooling passage to cool the first display module; a second heat exchange portion having at least one cooling passage to cool the second display module; and a heat exchanger configured to be selectively shared by the first heat exchange portion and the second heat exchange portion. ### Claim 2 (depends on 1) The display apparatus of claim 1, wherein the first heat exchange portion includes: a first cooling passage allowing air to be circulated to the first display module; and a second cooling passage allowing outside air introduced through the inlet to cool the first display module and then to be discharged through the outlet. ### Claim 3 (depends on 2) The display apparatus of claim 2, wherein the second heat exchange portion includes: a third cooling passage allowing air to be circulated to the second display module; and a fourth cooling passage allowing outside air introduced through the inlet to cool the second display module and then to be discharged through the outlet. ### Claim 4 (depends on 3) The display apparatus of claim 3, wherein the heat exchanger includes: a plurality of first channels that am configured to be shared by the first cooling passage and the third cooling passage; and a plurality of second channels that are configured to be shared by the second cooling passage and the fourth cooling passage. ### Claim 5 (depends on 4) The display apparatus of claim 4, wherein the first heat exchange portion includes: a first blower device provided to cause air of the second cooling passage to move, and suction outside air; a first case configured to accommodate the first blower device and having a first inlet hole; a second blower device provided to cause air in the first cooling passage to move; and a second case configured to accommodate the second blower device. ### Claim 6 (depends on 5) The display apparatus of claim 5, wherein the second heat exchange portion includes: a third blower device provided to cause air of the fourth cooling passage to move, and suction outside air; a third case configured to accommodate the third blower device and having a second inlet hole; a fourth blower device provided to cause air in the third cooling passage to move; and a fourth case configured to accommodate the fourth blower device. ### Claim 7 (depends on 6) The display apparatus of claim 6, further comprising a fifth case configured to accommodate the heat exchanger, wherein the fifth case includes an outlet hole through which air moving along the second cooling passage and the fourth cooling passage is discharged. ### Claim 8 (depends on 7) The display apparatus of claim 7, wherein the fifth case includes: a first connection hole configured to communicate the first cooling passage with the heat exchange such that the air of the first cooling passage is heat exchanged through the plurality of first channels; and a second connection hole configured to communicate the third cooling passage with the heat exchange such that the air of the third cooling passage is heat exchanged through the plurality of first channels. ### Claim 9 (depends on 7) The display apparatus of claim 7, wherein the second case includes a first opening configured to communicate the first cooling passage with the heat exchanger such that the air of the first cooling passage is introduced into the plurality of first channels by the second blower device, and the fourth case includes a second opening configured to communicate the third cooling passage with the heat exchanger such that the air of the third cooling passage is introduced into the plurality of first channels by the fourth blower device. ### Claim 10 (depends on 7) The display apparatus of claim 7, wherein the heat exchange device comprises a controller, and the controller performs control to cause a rotating speed of at least one of the first blower device or the second blower device to increase when the first display module has a temperature higher than a temperature of the second display module, and perform control to cause a rotating speed of at least one of the third blower device or the fourth blower device to increase when the first display module has a temperature lower than a temperature of the second display module. ### Claim 11 (depends on 10) The display apparatus of claim 10, wherein the heat exchanger device includes at least one temperature sensor, and the at least one temperature sensor is disposed on at least one of the first display module or the second display module. ### Claim 12 (depends on 4) The display apparatus of claim 4, wherein the plurality of first channels and the plurality of second channels are disposed in an alternate manner. ### Claim 13 (depends on 7) The display apparatus of claim 7, wherein the first case and the third case are disposed at an upper side of the fifth case, and the second case and the fourth case am disposed at a lower side of the fifth case.