CN117812872A

CN117812872A - display device

Info

Publication number: CN117812872A
Application number: CN202211164451.XA
Authority: CN
Inventors: 戴振宇; 李南庆
Original assignee: Daqing Co ltd
Current assignee: Daqing Co ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2024-04-02

Abstract

The invention discloses a display device which comprises a shell, a panel, an outer circulation assembly, an inner circulation assembly and an optical device. The housing includes a closed interior space, opposing first and second sides. The panel is adjacent to the first side surface and the second side surface. The outer circulation components are respectively arranged on the first side face and the second side face, each outer circulation component comprises an air duct component and a fan component, and the air duct component guides air flow generated by the fan component to the panel. The inner circulation assembly is arranged in the inner space and comprises a first fan piece and a second fan piece, and the first fan piece and the second fan piece are arranged at two opposite ends. The optical device is arranged in the inner space and positioned at the other end of the first side surface and the second side surface opposite to the panel.

Description

Display device

Technical Field

The present invention relates to a display device, and more particularly, to a display device having an inner circulation assembly and an outer circulation assembly.

Background

In general, a backlight module is provided with an active heat dissipation mechanism or a passive heat dissipation mechanism, such as a fan, a heat dissipation fin, etc. However, the heat dissipation mechanism cannot effectively dissipate heat of the polarizer of the display device, when the polarizer is irradiated by a heat source, the display of the picture is abnormal due to chemical reaction caused by temperature, and the heat energy accumulation condition of air in the display device is generated under the condition that the temperature of an external heat source and a backlight device is raised.

Disclosure of Invention

In view of the above, in one embodiment, a display device is provided, which includes a housing, a panel, an outer circulation assembly, an inner circulation assembly, and an optical device. The housing includes a closed interior space, opposing first and second sides. The panel is connected to the first side and the second side. The outer circulation components are respectively arranged on the first side face and the second side face, each outer circulation component comprises an air duct component and a fan component, and the air duct component guides air flow generated by the fan component to the panel. The inner circulation assembly is arranged in the inner space and comprises a first fan piece and a second fan piece, and the first fan piece and the second fan piece are arranged at two opposite ends. The optical device is arranged in the inner space and positioned at the other end of the first side surface and the second side surface opposite to the panel.

In some embodiments, each air duct member of the outer circulation assembly includes a flow passage, an air inlet disposed in a direction perpendicular to a plane of the first side and the second side, and an air outlet facing the panel.

In some embodiments, each air duct member of the outer circulation assembly includes a flow passage, an air inlet disposed in a direction parallel to a plane of the first side and the second side, and an air outlet facing the panel.

In some embodiments, the panel has a first panel portion and a second panel portion disposed at an angle relative to each other.

In some embodiments, the fan assembly includes a first fan set disposed parallel to the first panel portion and a second fan set disposed parallel to the second panel portion.

In some embodiments, the air duct member is provided with a flow guiding structure, the flow guiding structure is provided with a plurality of first spacers and a plurality of second spacers, each first spacer is provided with a first section and a second section, each second spacer is provided with a third section and a fourth section, the first section and the third section extend in a direction away from the fan assembly, and the second section and the fourth section extend towards the first panel part and the second panel part respectively.

In some embodiments, the first fan member and the second fan member are disposed at opposite diagonal angles.

In some embodiments, the first fan member is disposed at an end of the optical device adjacent to the first side surface, and the second fan member is disposed at an end of the optical device adjacent to the second side surface.

In some embodiments, a dust guard is included, disposed between the inner circulation assembly and the optical device.

In some embodiments, the outer circulation assembly includes a heat-dissipating fin, a heat-insulating sheet disposed on the air duct member, and a cooling chip disposed on the heat-insulating sheet, the heat-dissipating fin being disposed on the heat-insulating sheet.

In summary, in one embodiment, a display device is provided. The external circulation assembly guides the wind flow generated by the fan assembly to the panel through the air duct member. The inner circulation assembly is positioned in the closed inner space. Through the independent inside and outside circulation subassembly respectively, dispel the heat to display device's panel and cavity simultaneously, reduce display device's heat accumulation situation.

The invention will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto.

Drawings

Fig. 1 is a perspective view of a display device according to a first embodiment.

Fig. 2 is a partially exploded view of a display device according to a first embodiment.

Fig. 3 is a schematic view illustrating an internal space of a display device according to a first embodiment.

FIG. 4 is a schematic view of the wind flow of the wind tunnel assembly of the display device according to a first embodiment.

FIG. 5 is a schematic view of the wind flow of the wind tunnel assembly of the display device according to a second embodiment.

Fig. 6 is a schematic view of a flow guiding structure of a display device according to a second embodiment.

Fig. 7 is a schematic view illustrating an internal space of a display device according to a third embodiment.

FIG. 8 is a schematic view of wind flow in a wind tunnel assembly of a display device according to a third embodiment.

Fig. 9 is a schematic view illustrating an internal space of a display device according to a fourth embodiment.

Wherein, the reference numerals:

100 display device

110 casing

111 first side

112 second side surface

113 internal space

130 panel

131 first panel portion

132 second panel portion

150 external circulation component

151 air duct piece

1511 flow channel

1511A air inlet

1511B air outlet

152 fan assembly

153 flow guiding structure

1531 first spacer

1531A first section

1531B second stage

1532 second spacer

1532A third section

1532B fourth section

154 radiating fin

155 thermal insulation sheet

156 refrigeration chip

170 internal circulation assembly

171 first fan member

172 second fan member

180 dustproof piece

190 optical device

211 first side surface

212 second side surface

213 internal space

230 panel

231 first panel section

232 second panel portion

250 external circulation component

251 air duct piece

2511 flow channel

2511A air inlet

2511B air outlet

252 fan assembly

252A first fan set

252B second fan set

271 first fan member

272 second fan member

311 first side surface

312 second side

313 internal space

371 first fan member

372 second fan member

390 optical device

a size of

b size

Theta angle

Detailed Description

Please refer to fig. 1 to 4. Fig. 1 is a perspective view of a display device according to a first embodiment. Fig. 2 is a partially exploded view of a display device according to a first embodiment. Fig. 3 is a schematic view illustrating an internal space of a display device according to a first embodiment. FIG. 4 is a schematic view of the wind flow of the wind tunnel assembly according to a first embodiment. A display device 100 includes a housing 110, a panel 130, an outer circulation assembly 150, an inner circulation assembly 170, and an optical device 190. In the first embodiment, the display device 100 is, for example, a stereoscopic display device, and is applied to an outdoor electronic billboard or the like.

As shown in fig. 1 to 4, the housing 110 includes a closed interior space 113, opposite first and second sides 111 and 112. The panel 130 is connected to the first side 111 and the second side 112. In the first embodiment, the inner space 113 of the housing 110 is completely closed, that is, the air of the inner space 113 and the air of the outside of the display device 100 are not communicated with each other.

As shown in fig. 3, the external circulation assembly 150 is respectively disposed on the first side 111 and the second side 112, so as to simultaneously dissipate heat from the first side 111 and the second side 112. Each of the outer circulation assemblies 150 includes a duct member 151 and a fan assembly 152, and the duct member 151 has a flow passage 1511 to guide the wind flow generated from the fan assembly 152 to the panel 130. Taking the first side 111 as an illustration, the external circulation assembly 150 may also generate an air flow on the first side 111 through the fan assembly 152 while radiating the heat of the display device 100, and the air flow flows to the panel 130 through the air duct 151 to radiate the heat of the panel 130. Referring to fig. 2, the outer circulation assembly 150 further includes a heat dissipation fin 154, a heat insulation sheet 155 and a cooling chip 156, taking the first side 111 as an example for illustration, the air duct member 151 is disposed on the first side 111, and the outer circulation assembly 150 can also be used as a cooling surface of the inner circulation besides achieving the effect of outer circulation heat dissipation by using the air duct member 151. The heat insulating sheet 155 is provided on the duct member 151, and in addition, the heat insulating sheet 155 is provided with a cooling chip 156. Further, the heat dissipation fins 154 are disposed on the heat insulation sheet 155, and the heat dissipation effect is further increased by the heat dissipation fins 154, the heat insulation sheet 155 and the cooling chip 156.

As shown in fig. 3 and 4, the inner circulation assembly 170 is disposed in the inner space 113, and the inner circulation assembly 170 includes a first fan member 171 and a second fan member 172, wherein the first fan member 171 and the second fan member 172 are disposed at opposite ends. The optical device 190 is disposed in the inner space 113 and located between the first side 111 and the second side 112 opposite to the other end of the panel 130. In the first embodiment, the first fan member 171 and the second fan member 172 are used to dissipate heat from the internal space 113 of the display device 100 and the optical device 190 located in the internal space 113. In the first embodiment, the optical device 190 includes a backlight module, a circuit board assembly, and the like. In the first embodiment, the dimensions of the housing 110 are dependent on the dimensions a, b of the outer circulation assembly 150, for example, the dimensions a, b of the outer circulation assembly 150 are 21.5 inches to 85 inches, with the outer circulation assembly 150 being assembled with its appropriate housing 110. Further, in the first embodiment, the number of fan pieces is two, but is not limited thereto. The first fan member 171 and the second fan member 172 are disposed at different positions, and in the first embodiment, the first fan member 171 and the second fan member 172 are disposed at opposite ends diagonally to increase the air circulation efficiency of the upper side and the lower side of the inner space 113, but not limited thereto. The implementation of the other arrangement will be described in detail later.

Specifically, the external circulation assembly 150 of the display device 100 guides the wind flow generated by the fan assembly 152 to the panel 130 through the air duct 151 to dissipate heat from the panel 130. The internal circulation assembly 170 dissipates heat from the internal space 113 of the display device 100 and the optical device 190 located in the internal space 113 through the first fan member 171 and the second fan member 172. In this way, the heat dissipation is performed to the outside and inside of the display device 100 by the separate internal and external circulation components, thereby reducing the thermal energy accumulation state of the display device 100.

Referring to fig. 3 and 4 again, in the first embodiment, each air channel member 151 of the outer circulation assembly 150 includes an air inlet 1511A and an air outlet 1511B, the air inlet 1511A is disposed in a direction parallel to the plane of the first side 111 and the second side 112, and the air outlet 1511B faces the panel 130. Thus, the fan assembly 152 is disposed at the air inlet 1511A, and the generated air flows from the air inlet 1511A to the air outlet 1511B, as shown by the arrows in fig. 4, the air flow generated by the fan assembly 152 flows to the panel 130 for dissipating heat.

As shown in fig. 4, in the first embodiment, the panel 130 has a first panel portion 131 and a second panel portion 132, and the first panel portion 131 and the second panel portion 132 are disposed opposite to each other at an angle. Specifically, the first panel portion 131 and the second panel portion 132 may be disposed opposite to each other at a specific angle according to actual usage conditions, as shown in fig. 4, the angle θ of the first panel portion 131 and the second panel portion 132 is about 30 ° to 150 °, and here, about 90 ° is taken as an example, and the first panel portion and the second panel portion are disposed as L-shaped panels, but not limited thereto, and may be other angles.

Referring again to fig. 3, the display device 100 includes a dust-proof member 180 disposed between the inner circulation assembly 170 and the optical device 190 to prevent moisture and dust from contaminating a side of the panel 130.

Please refer to fig. 5 and 6. FIG. 5 is a schematic view of the wind flow of the wind tunnel assembly of the display device according to a second embodiment. Fig. 6 is a schematic view of a flow guiding structure of a display device according to a second embodiment. In the second embodiment, the air duct member 151 is provided with a flow guiding structure 153, the flow guiding structure 153 has a plurality of first spacers 1531 and a plurality of second spacers 1532, each first spacer 1531 has a first section 1531A and a second section 1531B, each second spacer 1532 has a third section 1532A and a fourth section 1532B, the first section 1531A and the third section 1532A extend away from the fan assembly 152, and the second section 1531B and the fourth section 1532B extend towards the first panel part 131 and the second panel part 132, respectively. In the second embodiment, the first section 1531A of the first spacer 1531 and the third section 1532A of the second spacer 1532 extend along the direction of the rotation axis of the fan assembly 152 (perpendicular to the arrangement direction of the fan assembly 152). Specifically, the flow guiding structure 153 is disposed in the air duct member 151 to divide the flow channel 1511 into a plurality of flow channels by a plurality of first spacers 1531 and a plurality of second spacers 1532, and respectively guide the air flow to the first panel portion 131 and the second panel portion 132 (as shown by arrows in fig. 5), so as to achieve the effect of evenly dissipating the heat from the panel 130.

In addition, in the second embodiment, the laminar flow and turbulent flow distribution of the air inside the flow channel need to be considered in correspondence with the design of the different flow channels 1511. In addition, parameters such as the heat conversion H, the total flow path air W, the specific heat of air Cp, the rising temperature Δt in the cavity, the air volume CFM, the air density D, and the air volume Q required for cooling are also different, so that the parameters need to be calculated and simulated, and then the suitable fan assembly 152 is selected, and the evaluation mode is calculated according to the following formula:

W＝CFM×D

H＝Cp×W×ΔT

Q＝H/(ΔT×Cp×D)

further, the fan assembly 152 is also selected and used with respect to the cooling chip 156, and the cooling efficiency COPc and the heating efficiency COPh of the cooling chip 156 are calculated from the cold side cooling force Qc, the hot side decomposition heat Qh and the input electric power P as follows:

COPc＝Qc/P

COPh＝Qh/P

thus, by simulating the parameters obtained by the calculation in the designed flow channel, the laminar and turbulent flow distribution of the flow channel air is confirmed, so as to select the proper fan assembly 152 and the refrigeration chip 156 to be matched.

Please refer to fig. 7 and 8. Fig. 7 is a schematic view illustrating an internal space of a display device according to a third embodiment. FIG. 8 is a schematic view of wind flow in a wind tunnel assembly of a display device according to a third embodiment. The third embodiment is similar to the first and second embodiments in structure and will not be described again. There are various embodiments regarding the location of the fan member. According to the actual assembly situation and the outdoor environment, as shown in fig. 7, in the third embodiment, the first fan member 271 and the second fan member 272 are located on the same side of the inner space 213 and are disposed at opposite ends. In addition, each air channel member 251 of the external circulation assembly 250 includes a flow channel 2511, an air inlet 2511A and an air outlet 2511B, the air inlet 2511A is disposed in a direction perpendicular to the plane of the first side 211 and the second side 212, and the air outlet 2511B is directed toward the panel 230. Further, as shown in fig. 8, the fan assembly 252 includes a first fan set 252A and a second fan set 252B, the first fan set 252A is disposed parallel to the first panel 231, and the second fan set 252B is disposed parallel to the second panel 232. The first fan set 252A and the second fan set 252B can evenly radiate heat to the panel 230.

Please refer to fig. 9. Fig. 9 is a schematic view illustrating an internal space of a display device according to a fourth embodiment. The fourth embodiment is similar to the first, second and third embodiments in structure and will not be described again. In the fourth embodiment, the first fan 371 is disposed at an end of the optical device 390 near the first side 311, and the second fan 372 is disposed at an end of the optical device 390 near the second side 312. Thus, the first fan 371 and the second fan 372 of the inner circulation assembly 370 can form a wind flow as shown in fig. 9, so as to completely dissipate heat from the inner space 313 and the optical device 390 located in the inner space 313.

In summary, according to one embodiment, a display device is provided. The external circulation component of the display device guides the wind flow generated by the fan component to the panel through the air duct piece. The internal circulation assembly is used for radiating the internal space of the display device and the optical device positioned in the internal space through the first fan piece and the second fan piece. Therefore, the heat dissipation is carried out on the outside and the inside of the display device through the respectively independent internal and external circulation components, and the heat accumulation condition of the display device is reduced.

Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A display device, comprising:

a housing including a closed interior space, a first side and a second side opposite to the first side;

a panel connected to the first side and the second side;

the outer circulation assemblies are respectively arranged on the first side face and the second side face, each outer circulation assembly comprises an air duct piece and a fan assembly, and the air duct piece guides the air flow generated by the fan assembly to the panel; the inner circulation assembly is arranged in the inner space and comprises a first fan piece and a second fan piece, and the first fan piece and the second fan piece are arranged at two opposite ends; and

an optical device is arranged in the inner space and positioned between the first side surface and the second side surface relative to the other end of the panel.

2. The display device of claim 1, wherein each of the duct members of the two outer circulation assemblies includes a flow passage, an air inlet and an air outlet, the air inlet being disposed in a direction perpendicular to a plane of the first side and the second side, the air outlet being oriented toward the panel.

3. The display device of claim 1, wherein each of the duct members of the two outer circulation assemblies includes a flow passage, an air inlet and an air outlet, the air inlet being disposed in a direction parallel to the planes of the first side and the second side, the air outlet being oriented toward the panel.

4. The display device of claim 1, wherein the panel has a first panel portion and a second panel portion disposed at an angle relative to each other.

5. The display device of claim 4, wherein the fan assembly comprises a first fan set and a second fan set, the first fan set being disposed parallel to the first panel portion, the second fan set being disposed parallel to the second panel portion.

6. The display device of claim 4, wherein the air duct member has a flow guiding structure, the flow guiding structure has a plurality of first spacers and a plurality of second spacers, each of the first spacers has a first section and a second section, each of the second spacers has a third section and a fourth section, the first section and the third section extend away from the fan assembly, and the second section and the fourth section extend toward the first panel portion and the second panel portion, respectively.

7. The display device of claim 1, wherein the first fan member and the second fan member are disposed at opposite diagonal angles.

8. The display device of claim 1, wherein the first fan member is disposed at an end of the optical device adjacent to the first side surface, and the second fan member is disposed at an end of the optical device adjacent to the second side surface.

9. The display device of claim 1, further comprising a dust-proof member disposed between the inner circulation assembly and the optical device.

10. The display device of claim 1, wherein the outer circulation assembly comprises a heat sink, a heat shield and a cooling chip, the heat shield is disposed on the air duct member, the cooling chip is disposed on the heat shield, and the heat sink is disposed on the heat shield.