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EP-3886547-B1 - OUTDOOR DISPLAY DEVICE

EP3886547B1EP 3886547 B1EP3886547 B1EP 3886547B1EP-3886547-B1

Inventors

  • KIM, SUNG KI
  • JUNG, HYUN JUN

Dates

Publication Date
20260506
Application Date
20190219

Claims (7)

  1. An outdoor display apparatus comprising: a case (10) comprising an inlet (41) and an outlet (42); a display module (30) disposed inside the case (10) and comprising a display panel (31) on which an image seen through at least a portion of the case (10) is displayed; and a heat exchanger (200) disposed to receive heat from the display module (30), wherein the heat exchanger (200) comprises: a first portion (210) located on a first flow path (P1) formed to circulate air to the display module (30) and disposed such that at least a portion of the first portion is in contact with the display module, the first portion comprising a first head (231) provided to receive heat from the display module (30) and provided to accommodate a phase change material therein; a second portion (220) provided to receive heat from the first portion (210), and located on a second flow path (P2) on which outside air is heat-exchanged with air, the second portion (220) comprising a second head (232), wherein the first head (231) and the second head (232) are connected via a tube portion (260) comprising a plurality of tubes (161) so as to communicate with each another; wherein the phase change material is provided to circulate between the first portion (210) and the second portion (220), and provided to change phase from a fluid to a gas, wherein the case (10) comprises a partition wall (60) provided to isolate the first flow path (P1) and the second flow path (P2) from each other, wherein the first flow path (P1) is formed in a closed space and further comprises a first fan (310) configured to circulate air in the first flow path (P1), wherein the second flow path (P2) further comprises a second fan (320) provided to allow the outside air, which is sucked through the inlet (41), to be heat-exchanged through the second portion (220) and to be discharged through the outlet (42), the first portion (210) and the second portion (220) are disposed obliquely with the first portion (210) positioned lower than the second portion (220), and wherein the first head (231) is disposed at the lower end of the heat exchanger (200) and the second head (232) is disposed at an upper end of the heat exchanger (200), such that the plurality of tubes (161) extend upwardly from the first head (231) to the second head (232).
  2. The outdoor display apparatus of claim 1, wherein the heat exchanger (200) further comprises a heat exchange fin portion (240) provided to increase heat transfer of the tube portion (260).
  3. The outdoor display apparatus of claim 1, wherein the partition wall (60) is provided to isolate at least a portion of the first portion (210) and the second portion (220).
  4. The outdoor display apparatus of claim 1, wherein the heat exchanger (200) comprises a partition wall mounting portion (250) formed on at least a portion of the heat exchange fin portion (240).
  5. The outdoor display apparatus of claim 1, wherein the heat exchanger (200) comprises any one of a plurality of cooling fins or heat sinks or heat pipes.
  6. The outdoor display apparatus of claim 2, wherein the heat exchange fin portion (240) comprises any one of a stack fin or a folded fin.
  7. The outdoor display apparatus of claim 1, wherein the heat exchanger (200) comprises at least one of copper, stainless steel, aluminum, and plastic.

Description

[Technical Field] The present disclosure relates to an outdoor display apparatus, and more particularly, to an outdoor display apparatus including a cooler. [Background Art] In general, a display apparatus is a device that displays an image on a screen, such as a television, a computer monitor, and a digital information display. Recently, such a display apparatus has been often installed on the outside of building, or outdoors for advertising purposes. The display apparatus includes billboards that are placed outside the building and display images. Such an outdoor display apparatus, there is a difficulty in that when a display panel is directly exposed to sunlight, a surface temperature of the display panel is increased, causing deterioration. In addition, the display apparatus includes a display panel (hereinafter, referred to as a liquid crystal panel) and a backlight unit that allows light to be incident on a rear surface of the liquid crystal panel. The liquid crystal panel is formed of a pair of substrates facing each other with a liquid crystal layer therebetween. In the backlight unit, a light source configured to emit light into the liquid crystal panel is provided, and a cold cathode fluorescent tube, a light emitting diode, or the like is used as the light source. The light source of the backlight unit not only generates light but also emits heat, which causes deterioration of the liquid crystal. Accordingly, the display apparatus includes a cooler configured to dissipate heat generated from the light source of the backlight unit. The cooler includes a structure including a fan and an air filter, and the cooler forms a cooling flow path that cools a front of the liquid crystal panel while sucking outside air using the fan, and the cooler absorbs and discharges solar heat and heat from the liquid crystal panel through the cooling flow path. The heat dissipation device provided with the fan and air filter requires periodic replacement of the filter, which incurs high maintenance costs, and because the fan and air filter are required to be placed together, it causes a difficulty in that a thickness of the produce is increased as much as a thickness of the fan and air filter. WO 2018/062645 A1 relates to display cooler for cooling a display device. Said display device has a structure of a cooler that uses a structure of a heat pipe where refrigerant as volatile liquid flows through an inside of the heat pipe and a structure of a pin that enables enlarging a heat transfer area of the heat pipe, to quickly absorb heat into it from air in a closed air circulation pathway where air circulates around a display unit by evaporating the refrigerant, and quickly discharge the heat into a space outside of the closed air circulation pathway (an open air flow pathway) by condensing the refrigerant, to occupy a less volume and generate an effective heat exchange of a heat exchanger. [Disclosure] [Technical Problem] The present disclosure is directed to providing an outdoor display apparatus capable of improving cooling efficiency by including an improved cooler. The present disclosure is directed to providing an outdoor display apparatus including a cooler including a phase change material. The present disclosure is directed to providing an outdoor display apparatus capable of improving cooling efficiency by various convective heat dissipation by including a closed channel in the front and a flow channel in the rear. The present disclosure is directed to providing an outdoor display apparatus capable of improving aesthetics by making a product slim. [Technical Solution] The present invention provides a display apparatus in accordance with claim 1. One aspect of the present disclosure provides an outdoor display apparatus including a case including an inlet and an outlet, a display module disposed inside the case and including a display panel on which an image seen through at least a portion of the case is displayed, and a heat exchanger disposed to receive heat from the display module. The heat exchanger includes a first portion located on a first flow path formed to circulate air to the display module, a second portion provided to receive heat from the first portion, and located on a second flow path on which outside air is heat-exchanged with air, and a phase change material provided to circulate between the first portion and the second portion, and provided to change a phase from a fluid to a gas. The case includes a partition wall provided to isolate the first flow path and the second flow path from each other, and the first portion and the second portion are disposed obliquely. The first portion of the heat exchanger includes a first head portion provided to receive heat from the display module and provided to accommodate the phase change material therein, a tube portion connected to the first head portion to circulate the phase change material, and it may include a heat exchange fin portion provided to incr