JP2008164802A - Display apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display apparatus suppressing the temperature rise within a cabinet by a fan relatively low in static pressure of a relatively large-sized display apparatus and achieving efficient radiation and low noise. <P>SOLUTION: The display apparatus is provided with a first inlet 21 which introduces air to an upper side within a cabinet 2 covering a back side of a display element 1 having a display surface 11a on a front side, a first fan 3 which discharges the air introduced from the first inlet 21 to the outside, a second inlet 23 which introduces the air to the lower side within the cabinet 2, and a second fan 4 which discharges the air introduced from the second inlet 23 to the outside to smooth flow of the air on the upper side within the cabinet 2 and the flow of the air on the lower side and facilitate the circulation of the air. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a display device such as a liquid crystal display device, a plasma display device, an SED display, and an EL display.

  A display device such as a television includes a display unit having a display surface for displaying images on the front side, a cabinet having an intake hole on the lower side and an exhaust hole on the upper side, and covering the rear side of the display unit, and the cabinet And a fan arranged on the upper side of the inside, and is configured to discharge air that has been sucked into the cabinet from the intake hole into the cabinet by driving the fan, and to suppress temperature rise in the cabinet. (For example, refer to Patent Document 1).

In addition, the liquid crystal television has a plurality of lamps arranged vertically on the rear side of the display portion, and a plurality of circuit boards and a power supply board provided on the rear side of the lamps.
Japanese Patent Laid-Open No. 10-233979

  By the way, in a relatively small display device, as described in Patent Document 1, a heat dissipation structure in which an air intake hole is provided on the lower side of a cabinet in which a fan is disposed on the inner upper side and an air exhaust hole is provided on the upper side. By doing, the temperature rise in a cabinet can be suppressed.

  However, thin LCD TVs and thin plasma TVs are getting larger year by year, and in thin LCD TVs, the heat generated by the backlight unit with lamps arranged side by side increases, and the temperature in the entire area of the cabinet increases. In addition, in a thin plasma television, the heat generated by the display panel increases, and the temperature in the entire area of the cabinet rises. As a means for suppressing the temperature rise in the cabinet, As described in Patent Document 1, when a heat dissipation structure in which an air intake hole is provided on the lower side of the cabinet and an air exhaust hole is provided on the upper side, the distance from the air intake hole to the fan and the air exhaust hole becomes relatively long. Therefore, it is necessary to increase the air permeability in the cabinet using a fan having a high static pressure and a large output.

  However, a fan with a high static pressure and a large output is generally noisy, so this noise exceeds the allowable limit for a home display device, and a countermeasure has been demanded. Incidentally, although the allowable noise value of a home display device is 30 dBA or less, for example, the noise when the heat dissipation structure described in Patent Document 1 is adopted for a display device exceeding 100 mm is 37.8 dBA, The allowable noise value will be greatly exceeded.

  The present invention has been made in view of such circumstances, and a main object of the present invention is to provide first and second inlets for introducing air into the upper side and the lower side in the cabinet covering the rear side of the display unit, and By providing the first and second fans for discharging the air introduced from the first and second introduction ports to the outside, the fan having a relatively low static pressure even in a relatively large display device Accordingly, an object of the present invention is to provide a display device that can suppress the temperature rise in the cabinet and can realize efficient heat dissipation and low noise.

  Another object is to provide cooling by the introduced air by providing the first and second derivatives for guiding the air introduced from the first and second inlets to the first and second fans, respectively. An object of the present invention is to provide a display device capable of enhancing the effect.

  Another object is to provide the second inlet at the lower part of the cabinet, the second inlet corresponding to the first inlet and the second fan at the middle in the vertical direction, and the first fan at the upper part. The first discharge port corresponding to the above is provided, and the air blown out by the second fan and the air introduced from the first introduction port are mixed between the first introduction port and the second discharge port. An object of the present invention is to provide a display device that can prevent the air discharged from the second discharge port from being mixed with the air introduced from the first introduction port by providing a partition wall that should be prevented. .

  In addition, another purpose is to make the partition wall a duct arranged between the second fan and the second exhaust port, thereby preventing heated air from flowing back in the cabinet. An object of the present invention is to provide a display device capable of improving the air exhaustability at the lower side in a cabinet.

  Another purpose is to provide the second inlet at the lower part of the cabinet, the second inlet corresponding to the first inlet and the second fan at the middle in the vertical direction, and the first fan at the upper part. Corresponding first outlets are provided, respectively, between the first inlet and the first derivative, between the second inlet and the second derivative, the first fan and the first outlet, Provided is a display device that can smoothly flow the air in the upper side and the air in the lower side in the cabinet by providing ducts between the second fan and the second outlet. There is.

  Another purpose is to provide the second inlet at the lower part of the cabinet, the second inlet corresponding to the first inlet and the second fan at the middle in the vertical direction, and the first fan at the upper part. Corresponding first discharge ports are respectively provided, and the first discharge port and the second discharge port are arranged in different positions in the lateral direction, so that the air discharged from the second discharge port is the first discharge port. It is an object of the present invention to provide a display device that can make short circuiting difficult.

  In addition, another object is to arrange a plurality of first and second derivatives in a lateral direction, and to arrange a first introduction port at a position corresponding to the lower portion of each first derivative. The second inlet is located at a position corresponding to the lower part, the first fan and the first outlet are located at a position corresponding to the upper part of each first derivative, and the second inlet is located at a position corresponding to the upper part of each second derivative. By providing each of the two fans and the second discharge port, it is possible to efficiently introduce air into the upper and lower sides in the cabinet, and to provide a display device capable of efficiently discharging the introduced air. There is.

  Another object is to make it difficult for the air discharged from the second outlet to be short-circuited to the first inlet by making the lateral positions of the first and second derivatives different. Is to provide.

  Another object is to arrange a plurality of first inlets side by side at a position corresponding to the lower part of the first derivative in a lateral direction, and to connect the first fan and the first outlet to the first derivative. A plurality of juxtaposed laterally spaced apart at a position corresponding to the upper part, and a plurality of second introduction ports juxtaposed in a laterally spaced apart position corresponding to the lower part of the second derivative; Provided is a display device capable of efficiently suppressing a temperature rise in the entire area of the cabinet by arranging a plurality of second outlets in a horizontal direction at positions corresponding to the upper part of the second derivative. There is to do.

  In addition, another object is that each first inlet, each second inlet, each first fan and each first outlet, each second fan and each second outlet, An object of the present invention is to provide a display device that can enhance heat exchange in a cabinet by changing the position in the horizontal direction.

  Another object is to provide a duct that opens the second outlet to the upper side of the first inlet, so that the air discharged from the second outlet is short-circuited to the first inlet. It is an object of the present invention to provide a display device that can prevent the above-described problem.

  A display device according to the present invention includes a display unit having a display surface on the front side, and a cabinet that covers the rear side of the display unit, and the display device having the inside of the cabinet as a heat dissipation path, First and second inlets for introducing air to the lower sides, and first and second fans for discharging the air introduced from the first and second inlets to the outside. Features.

  In this invention, air can be introduced from the first inlet to the upper side in the cabinet, and air can be introduced from the second inlet to the lower side in the cabinet, and air introduced from the first inlet. Can be discharged to the outside by the first fan, and the air introduced from the second inlet can be discharged to the outside by the second fan. A temperature increase in the cabinet can be suppressed by using a fan having a relatively low pressure, and efficient heat dissipation and low noise can be realized.

  In addition, the display device according to the present invention includes first and second derivatives that guide air introduced from the first and second introduction ports to the first and second fans, respectively. And

  In this display device, the air introduced from the first inlet to the upper side in the cabinet can be guided to the first fan along the first derivative, and from the second inlet to the cabinet. Since the air introduced into the lower side of the inside can be guided to the second fan along the second derivative, the cooling effect by the introduced air can be enhanced and the temperature rise in the cabinet can be further suppressed. be able to.

  Further, in the display device according to the present invention, the cabinet has the second introduction port at a lower portion, and the second discharge port corresponding to the first introduction port and the second fan at an intermediate portion in the vertical direction. Each having a first outlet corresponding to the first fan, and the air blown out by the second fan between the first inlet and the second outlet. And a partition wall to prevent the air introduced from the first introduction port from being mixed.

  In this display device, the partition wall can prevent the air discharged from the lower second discharge port from being mixed with the air introduced from the upper first inlet port. The temperature rise of the air introduced from the first inlet can be reduced, and the temperature rise on the upper side in the cabinet can be further suppressed.

  In the display device according to the present invention, the partition wall is a duct arranged between the second fan and the second outlet.

  In this display device, the air blown out by the second fan can be surely discharged from the duct to the outside, and the heated air can be prevented from flowing back below in the cabinet. The air exhaustability at the lower side in the cabinet can be improved, and the temperature rise at the lower side in the cabinet can be further suppressed.

  Further, in the display device according to the present invention, the cabinet has the second introduction port at a lower portion, and the second discharge port corresponding to the first introduction port and the second fan at an intermediate portion in the vertical direction. Each having a first outlet corresponding to the first fan, between the first inlet and the first derivative, and between the second inlet and the second. Characterized in that ducts are arranged between the first fan and the first outlet and between the second fan and the second outlet, respectively. To do.

  In this display device, the duct guides the entire amount of air introduced from the first introduction port to the first derivative, and the air induced by the first derivative can be discharged from the duct to the outside. The duct induces the entire amount of air introduced from the second inlet to the second derivative, and the air induced by the second derivative can be discharged from the duct to the outside. In addition, it is possible to prevent recirculation at the lower side, and further, the flow of the upper air in the cabinet and the flow of the lower air can be made smooth, and air circulation can be promoted.

  Further, in the display device according to the present invention, the cabinet has the second introduction port at a lower portion, and the second discharge port corresponding to the first introduction port and the second fan at an intermediate portion in the vertical direction. Each having a first discharge port corresponding to the first fan, and the first introduction port and the second discharge port have different lateral positions. And

  In this display device, since the first introduction port provided in the middle portion in the vertical direction with respect to the cabinet and the second discharge port can be separated in the horizontal direction, the lower second discharge port It is possible to make it difficult for the air exhausted from the short circuit to short circuit to the upper first inlet, thereby improving the efficiency of heat dissipation in the cabinet.

  Further, in the display device according to the present invention, a plurality of the first and second derivatives are arranged side by side in the lateral direction, and the first introduction port is provided at a position corresponding to a lower portion of each first derivative. , The second inlet at a position corresponding to the lower part of each second derivative, the first fan and the first outlet at a position corresponding to the upper part of each first derivative, The second fan and the second discharge port are arranged at positions corresponding to the upper part of the derivative, respectively.

  In this display device, the first introduction port, the first derivative, the first fan, and the first discharge port are formed as one block, and a plurality of the blocks are arranged side by side in the horizontal direction. The second introduction port, the second derivative, the second fan, and the second discharge port are made into one block, and a plurality of the blocks are arranged side by side, so that the upper side and the lower side in the cabinet The air can be efficiently introduced into the air, the introduced air can be efficiently discharged, and the temperature rise in the entire area of the cabinet can be effectively suppressed.

  The display device according to the present invention is characterized in that the first and second derivatives have different lateral positions.

  In this display device, the first inlet and the second outlet provided at the middle in the vertical direction with the cabinet can be separated in the lateral direction, and the second outlet is discharged. Air can be hardly short-circuited to the first inlet, and the efficiency of heat dissipation in the cabinet can be improved.

  Further, in the display device according to the present invention, a plurality of the first introduction ports are arranged side by side at a position corresponding to a lower portion of the first derivative, and are arranged in parallel. A plurality of outlets are arranged side by side at a position corresponding to the upper portion of the first derivative, and the second inlet is spaced apart at a position corresponding to the lower portion of the second derivative. A plurality of the second fans and the second discharge ports are arranged side by side at a position corresponding to the upper portion of the second derivative in a lateral direction.

  In this display device, air can be efficiently introduced to the upper side in the cabinet from the plurality of first inlets spaced in the lateral direction, and the introduced first air is separated in the lateral direction. The air can be efficiently discharged from the outlet of the cabinet, and the air can be efficiently introduced to the lower side of the cabinet from the plurality of second inlets spaced laterally. Since it can discharge | emit efficiently from the several 2nd discharge port separated in the direction, the temperature rise in the whole area in a cabinet can be suppressed efficiently.

  In addition, the display device according to the present invention includes each first inlet, each second inlet, each first fan and each first outlet, each second fan, and each second. It is characterized in that the position in the lateral direction is different from that of the discharge port.

  In this display device, air can be circulated diagonally between the first inlet and the first outlet, and air can be passed between the second inlet and the second outlet. Since it can distribute | circulate diagonally, the heat exchange property in a cabinet can be improved and the temperature rise in a cabinet can be suppressed.

  The display device according to the present invention is characterized in that the cabinet has a duct that opens the second discharge port above the first introduction port.

  In this display device, the air discharged from the second discharge port can be prevented from being short-circuited to the first introduction port, and the temperature rise of the air introduced from the first introduction port can be prevented. The temperature rise on the upper side in the cabinet can be further suppressed.

  As described above in detail, according to the present invention, air is introduced to the upper side and the lower side in the cabinet, the air introduced to the upper side is discharged by the first fan, and the air introduced to the lower side is second. Since the fan is discharged by a large fan, even a relatively large display device can suppress the temperature rise in the cabinet by using a fan having a relatively low static pressure, thereby realizing efficient heat dissipation and low noise. be able to.

  Moreover, according to this invention, the air introduce | transduced into the upper side in the cabinet from the 1st inlet can be guide | induced to a 1st fan along a 1st derivative | guide_body, Since the air introduced to the lower side can be guided to the second fan along the second derivative, the cooling effect by the introduced air can be enhanced and the temperature rise in the cabinet can be further suppressed. it can.

  In addition, according to the present invention, since the air discharged from the second discharge port can be prevented from being mixed with the air introduced from the first introduction port by the partition wall, the air is introduced from the first introduction port. The temperature rise of the generated air can be reduced, and the temperature rise on the upper side in the cabinet can be further suppressed.

  Further, according to the present invention, the air blown out by the second fan can be surely discharged from the duct to the outside, and the heated air can be prevented from flowing back in the cabinet. The air discharge property on the lower side can be improved, and the temperature rise on the lower side in the cabinet can be further suppressed.

  Further, according to the present invention, the duct guides the entire amount of air introduced from the first introduction port, and the air induced by the first derivative can be discharged from the duct to the outside without being recirculated. Since the duct induces the entire amount of air introduced from the inlet of the cabinet, and the air induced by the second derivative can be discharged to the outside without refluxing, the upper air flow in the cabinet and the lower Air flow can be made smooth and air circulation can be promoted.

  Moreover, according to this invention, the air discharged | emitted from the lower 2nd discharge port can become difficult to short-circuit to the upper 1st inlet port, and the heat dissipation efficiency in a cabinet can be improved.

  Further, according to the present invention, since the introduction port, the derivative, the fan, and the discharge port are arranged in parallel as a single block on the upper side and the lower side in the cabinet, the upper and lower sides in the cabinet are arranged side by side. The air can be efficiently introduced to the side, the introduced air can be efficiently discharged, and the temperature rise in the entire area of the cabinet can be effectively suppressed.

  Further, according to the present invention, the air discharged from the second outlet is unlikely to be short-circuited to the first inlet by changing the lateral positions of the first and second derivatives in the block. It is possible to improve the efficiency of heat dissipation in the cabinet.

  In addition, according to the present invention, air can be efficiently introduced from the plurality of first and second inlets separated in the lateral direction to the upper side and the lower side in the cabinet, and the introduced air is laterally introduced. The plurality of first and second outlets that are separated from each other can be efficiently discharged, and the temperature rise in the entire area of the cabinet can be efficiently suppressed.

  Moreover, according to this invention, air can be distribute | circulated diagonally between a 1st inlet and a 1st discharge port, and air can be distribute | circulated between a 2nd inlet and a 2nd outlet. Since it can distribute | circulate diagonally, the heat exchange property in a cabinet can be improved and the temperature rise in a cabinet can be suppressed.

  Moreover, according to this invention, it can prevent that the air discharged | emitted from the 2nd discharge port is short-circuited to a 1st inlet, and prevents the temperature rise of the air introduce | transduced from a 1st inlet. The temperature rise on the upper side in the cabinet can be further suppressed.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.
Embodiment 1
FIG. 1 is a schematic longitudinal side view showing the configuration of a display device according to Embodiment 1 of the present invention, FIG. 2 is a schematic rear view, and FIG. 3 is a rear view showing the configuration of a cabinet.

  The illustrated display device includes a display unit 1 that has a display surface for displaying a television image on the front side and has a substantially rectangular parallelepiped shape, and a cabinet 2 that covers the peripheral and rear sides of the display unit 1. Is a thin liquid crystal television having a heat radiation path, in other words, a thin liquid crystal display device.

  The display unit 1 includes a panel 11 having a display surface 11a on the front side and having a substantially rectangular parallelepiped shape, an optical sheet such as a diffusion plate disposed on the rear side of the panel 11, and a plurality of sheets disposed on the rear side of the optical sheet. A backlight unit 13 having a lamp 12, first and second heat sinks 14, 15 disposed on the rear side of the backlight unit 13, and first and first units for inducing air along the heat sinks 14, 15. 2 derivatives 16 and 17 and an electrical component 18 such as a circuit board and a power supply board disposed on the rear side of the second derivative 17.

  The backlight unit 13 includes a box-shaped chassis 13a whose front side is open, and a plurality of lamps 12 that are spaced apart from each other in the chassis 13a. Above the rear surface of the chassis 13 a, a first heat sink 14 for efficiently radiating heat generated by the lamp 12 from the chassis 13 a into the cabinet 2, and air is guided upward along the first heat sink 14. A plurality of first derivatives 16 are arranged side by side in the lateral direction, and heat generated by the lamp 12 is efficiently transferred from the chassis 13a into the cabinet 2 below the rear surface of the chassis 13a. A plurality of second heat sinks 15 for radiating heat and a second derivative 17 for guiding air upward along the second heat sink 15 are provided side by side in the lateral direction.

  The first heat sinks 14 and the first derivatives 16 are spaced apart from each other in the front-rear direction, and the first fans 3 for discharging the air in the cabinet 2 to the outside outside are respectively provided above the first derivatives 16. The second heat sink 15 and the second derivative 17 are spaced apart from each other in the front-rear direction, and a second air exhausting the air in the cabinet 2 to the rear outside is provided above each second derivative 17. The fans 4 are respectively attached.

  The first and second heat sinks 14 and 15 each have a substrate that contacts the rear surface of the chassis 13a, and a plurality of blades that are arranged side by side in the lateral direction of the substrate.

  The first derivative 16 has a substantially U-shaped cross section having a guide plate portion 16a between an upper wall and a lower wall coupled to the chassis 13a, and through holes 16b and 16c are formed in the upper and lower portions of the guide plate portion 16a. The first fan 3 is attached to the upper through hole 16b so that the direction is rearward. The lower through-hole 16c is formed in the shape of a long hole in the lateral direction so that air introduced into the cabinet 2 from a first inlet described later can be taken in as much as possible.

  The second derivative 17 has a substantially U-shaped cross section having a guide plate portion 17a between an upper wall and a lower wall coupled to the chassis 13a, and through holes 17b and 17c are formed in the upper and lower portions of the guide plate portion 17a. The second fan 4 is attached to the upper through hole 17b so that the direction is rearward, and a plurality of electrical components 18 such as a circuit board and a power supply board are arranged in parallel at the center of the guide plate portion 17a. Yes. The lower through-hole 17c is formed in the shape of a long hole in the lateral direction so that air introduced into the cabinet 2 from a second introduction port described later can be taken in as much as possible.

  The first and second fans 3 and 4 include blades arranged so that the rotation center thereof is in the lateral direction, and a motor that drives the blades.

  The cabinet 2 has a deep dish shape having a frame portion that covers the peripheral edge portion of the display portion 1 and a lid plate portion that is connected to the rear end of the frame portion and covers the rear side of the display portion 1. And a plurality of first inlets 21 for introducing external air into the upper side of the cabinet 2 in the horizontal direction at positions corresponding to the lower through-holes 16 c of the first derivatives 16. In the upper part, a plurality of first discharge ports 22 corresponding to the first fan 3 are laterally spaced apart and arranged in parallel, and in the lower part and in the through-holes 17c below the second derivatives 17, respectively. A plurality of second introduction ports 23 for introducing external air to the lower side in the cabinet 2 are arranged in parallel at a corresponding position, and are arranged in the center in the vertical direction and each of the first introduction ports 21. A plurality of second discharge ports 24 corresponding to the second fan 4 are arranged side by side in the lateral direction.

  In the display device configured as described above, a plurality of first derivatives 16 and first fans 3 are laterally separated from each other on the upper side in the cabinet 2, and on the lower side in the cabinet 2. , A plurality of second derivatives 17 and a plurality of second fans 4 are arranged side by side in the lateral direction, and a first introduction port 21 and a second discharge port are provided at the center of the cabinet 2 in the vertical direction. 24 are separated from each other in the horizontal direction, and a plurality of first discharge ports 22 are arranged in the upper part of the cabinet 2 to be separated from each other in the horizontal direction. A plurality of second introduction ports 23 are arranged side by side in the lateral direction.

  By driving the first fan 3, it is possible to introduce outside air from the first introduction ports 21 to the upper side in the cabinet 2, and the introduced air is introduced into the first heat sink by the first derivative 16. 14 can be guided upward along the first heat sink 14, blown from the first fans 3 to the first discharge ports 22, and discharged from the first discharge ports 22 to the outside. . Therefore, the heat of the chassis 13 a is transmitted to the air induced by the first derivative 16, and the heated air is forcibly discharged from the first discharge port 22 to the outside by the first fan 3.

  Further, by driving the second fan 4, it is possible to introduce outside air from the respective second introduction ports 23 to the lower side in the cabinet 2, and this introduced air is supplied to the second derivative 17 by the second derivative 17. It can be guided upward along the second heat sink while being guided to the second heat sink, and can be blown out from each second fan 4 to each second discharge port 24 and discharged to the outside from each first discharge hole. . Therefore, the heat of the chassis 13 a is transmitted to the air induced by the second derivative 17, and the heated air is forcibly discharged from the second discharge port 24 to the outside by the second fan 4.

  Thus, air can be introduced into the upper side and the lower side in the cabinet 2, the air introduced into the upper side is discharged from the upper part of the cabinet 2, and the air introduced into the lower side is discharged from the central part in the vertical direction of the cabinet 2. Even in a relatively large display device, a temperature rise in the cabinet 2 can be suppressed using a fan having a relatively low static pressure.

  In addition, the first introduction port 21, the first derivative 16, the first fan 3, and the first discharge port 22 become one first block A, and the second introduction port 23, the second derivative 17, Since the second fan 4 and the second discharge port 24 become one second block B, and a plurality of the blocks A and B are arranged side by side in the horizontal direction, the efficiency is improved on the upper side and the lower side in the cabinet 2. Thus, air can be introduced and the introduced air can be discharged efficiently.

Embodiment 2
FIG. 4 is a schematic longitudinal sectional side view showing the configuration of the second embodiment of the display device. In this display device, each first inlet 21 and the lower through-hole 16c below each first derivative 16 and each second inlet 23 and the lower through-hole below each second derivative 17 are provided. 17c, ducts 5a, 5b, 5c between the first fans 3 and the first outlets 22 and between the second fans 4 and the second outlets 24, respectively. , 5d.

  The ducts 5a, 5b, 5c, and 5d are coupled around the first and second inlets 21 and 23 of the cabinet 2 and around the first and second outlets 22 and 24, respectively.

In this display device, the air introduced into each first introduction port 21 can be guided to the lower through-hole 16c of each first derivative 16 by each duct 5a. Can be guided to the respective first discharge ports 22 by the respective ducts 5c, and the air introduced into the respective second introduction ports 23 can be guided to the lower side of the respective second derivatives 17 by the respective ducts 5b. The air can be guided to the through holes 17c, and the air blown out by the second fans 4 can be guided to the second outlets 24 by the ducts 5d. Therefore, the upper air flow and the lower air flow in the cabinet 2 can be made smooth, and air circulation can be promoted.
Since other configurations and operations are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and detailed description thereof and description of operations and effects are omitted.

Embodiment 3
FIG. 5 is a schematic rear view showing the configuration of the third embodiment of the display device. In this display device, each first block A and each second block B have different lateral positions, and a second fan is provided between adjacent first inlets 21 and 21. 4 and the 2nd discharge port 24 are each arranged.

In this display device, since each first introduction port 21 and each second discharge port 24 are laterally separated, the air discharged from each second discharge port 24 is each It is difficult to short-circuit to the first inlet 21.
Since other configurations and operations are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and detailed description thereof and description of operations and effects are omitted.

Embodiment 4
FIG. 6 is a schematic rear view showing the configuration of the display device according to the fourth embodiment. In this display device, each of the first derivative 16 disposed on the upper side in the cabinet 2 and the second derivative 17 disposed on the lower side extends from one side of the cabinet 2 to the other side. A plurality of first fans 3 are laterally separated from each other on the top of the first derivative 16, and a plurality of second fans 4 are disposed on the second derivative 17. A plurality of first inlets 21 and a second outlet 24 are arranged side by side in the horizontal direction at a central portion in the vertical direction of the cabinet 2. In the upper part, a plurality of first discharge ports 22 are arranged side by side in the lateral direction, and in the lower part of the cabinet 2, a plurality of second introduction ports 23 are arranged side by side in the lateral direction.

In this display device, since each of the first and second derivatives 16 and 17 is one, the number of parts can be reduced and the assembly workability can be improved.
Since other configurations and operations are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and detailed description thereof and description of operations and effects are omitted.

Embodiment 5
FIG. 7 is a schematic rear view showing the configuration of the display device according to the fifth embodiment. In this display device, as in the fourth embodiment, the first and second derivatives 16 and 17 having a size arranged from one side to the other side in the cabinet 2 are arranged on the upper and lower sides in the cabinet 2. In the configuration provided on the side, each first inlet 21, each second inlet 23, each first fan 3 and each first outlet 22, each second fan 4 and each The second fan 4 and the second discharge port 24 are arranged between the first introduction ports 21 and 21 adjacent to each other, and the lateral positions of the second discharge port 24 are different from each other. ing.

In this display device, the air discharged from the lower second discharge port 24 can hardly be short-circuited to the upper first introduction port 21, and the efficiency of heat dissipation in the cabinet 2 can be improved. The temperature rise in the cabinet 2 can be suppressed.
Since other configurations and operations are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and detailed description thereof and description of operations and effects are omitted.

Embodiment 6
FIG. 8 is a schematic rear view showing the configuration of the display device according to the sixth embodiment, and FIG. 9 is a schematic cross-sectional view showing an enlarged main part. This display device is provided with a duct 6 that opens each second outlet 24 arranged at the center in the vertical direction of the cabinet 2 above each first inlet 21, and is connected to the outside from the second outlet 24. The air exhausted to is not easily sucked from the first inlet 21.

  In this embodiment, through holes 25 are provided at positions corresponding to the respective second fans 4 of the cabinet 2, one end of a substantially L-shaped duct 6 is attached around each through hole 25, and the other end is directed upward. The second outlet 24 is opened.

In this display device, the air discharged from the second discharge port 24 can be prevented from being short-circuited to the first introduction port 21, and the rise of the air introduced from the first introduction port 21 can be prevented. Can prevent temperature.
Since other configurations and operations are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and detailed description thereof and description of operations and effects are omitted.

  In the embodiment described above, the first and second introduction ports 21 and 23, the first and second fans 3 and 4, the first and second discharge ports 22 and 24 are separated in the lateral direction. However, the numbers of the inlets 21 and 23, the fans 3 and 4 and the outlets 22 and 24 are not particularly limited.

  The ducts 5a, 5b, 5c, and 5d arranged around the first and second introduction ports 21 and 23 and the first and second discharge ports 22 and 24 are not limited to those in the first embodiment. It is also provided in modes 2 to 5.

  In the embodiment described above, the ducts 5a, 5b, 5c, 5d are arranged around the first and second inlets 21, 23 and the first and second outlets 22, 24. For example, instead of the ducts 5 a and 5 d around the first inlet 21 and the second outlet 24, the second fan 4 blows between the first inlet 21 and the second outlet 24. You may provide the partition which should prevent mixing the air to take out and the air introduce | transduced from the 1st inlet 21. FIG.

  In the embodiment described above, the first fan 3 is provided in the first derivative 16 and the second fan 4 is provided in the second derivative 17. In addition, the first and second fans 3, 3 are provided. 4 may be provided in the cabinet 2. In this case, it is good also as a structure which arrange | positions the fans 3 and 4 to the 1st and 2nd discharge ports 22 and 24. FIG. Further, the first and second fans 3 and 4 may be provided in the display unit 1, more specifically in the chassis 13a.

  In the embodiment described above, the first and second derivatives 16 and 17 are provided. However, the derivatives 16 and 17 are not necessarily required. In addition, when the derivatives 16 and 17 are provided, the derivatives 16 and 17 may have a substantially U-shaped cross section, or may have a substantially cross-sectional shape, for example, and may have a configuration in which a lower portion is opened without providing the through holes 16c and 17c.

  In the embodiment described above, the introduction port, the discharge port, and the fan are arranged in each of the parts that are divided into two parts up and down in the cabinet. However, the introduction is made in each part that is divided into three or more parts in the cabinet up and down. It is good also as a structure which arrange | positions a mouth, a discharge port, and a fan.

  In addition to the liquid crystal display device such as a liquid crystal television, the display device according to the present invention may be a display device such as a plasma display device, an SED display, or an EL display.

It is a typical longitudinal section side view showing composition of Embodiment 1 of a display concerning the present invention. It is a typical back view which shows the structure of the display apparatus which concerns on this invention. It is a rear view which shows the structure of the cabinet of the display apparatus which concerns on this invention. It is a typical longitudinal cross-sectional side view which shows the structure of Embodiment 2 of the display apparatus which concerns on this invention. It is a typical back view which shows the structure of Embodiment 3 of the display apparatus which concerns on this invention. It is a typical back view which shows the structure of Embodiment 4 of the display apparatus which concerns on this invention. It is a typical back view which shows the structure of Embodiment 5 of the display apparatus which concerns on this invention. It is a typical back view which shows the structure of Embodiment 6 of the display apparatus which concerns on this invention. It is typical sectional drawing which expanded the principal part of the display apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display part 11a Display surface 16 1st derivative | guide_body 17 2nd derivative | guide_body 2 Cabinet 21 1st inlet 22 1st outlet 23 2nd inlet 24 2nd outlet 3 1st fan 4 2nd Fan 5a-5d duct 6 duct

Claims (11)

  In a display device that includes a display unit having a display surface on the front side and a cabinet that covers the rear side of the display unit, and the inside of the cabinet serves as a heat dissipation path, air is introduced into each of the upper side and the lower side in the cabinet. A display device comprising: first and second inlets; and first and second fans for discharging air introduced from the first and second inlets to the outside.   The display device according to claim 1, further comprising first and second derivatives that guide air introduced from the first and second inlets to the first and second fans, respectively.   The cabinet has the second inlet at the bottom, the second inlet corresponding to the first inlet and the second fan at the middle in the vertical direction, and the first fan at the top. Each has a corresponding first outlet, and is introduced from the first inlet and the air blown by the second fan between the first inlet and the second outlet. 3. A display device according to claim 1, further comprising a partition wall to prevent mixing with fresh air.   The display device according to claim 3, wherein the partition wall is a duct disposed between the second fan and the second outlet.   The cabinet has the second inlet at the bottom, the second inlet corresponding to the first inlet and the second fan at the middle in the vertical direction, and the first fan at the top. Corresponding first discharge ports, respectively, between the first inlet and the first derivative, between the second inlet and the second derivative, the first The display device according to claim 2, wherein ducts are arranged between the fan and the first outlet and between the second fan and the second outlet.   The cabinet has the second inlet at the bottom, the second inlet corresponding to the first inlet and the second fan at the middle in the vertical direction, and the first fan at the top. The display device according to claim 1, further comprising a corresponding first discharge port, wherein the first introduction port and the second discharge port have different lateral positions.   A plurality of the first and second derivatives are arranged side by side in a lateral direction, and the first introduction port corresponds to the lower part of each second derivative at a position corresponding to the lower part of each first derivative. The second inlet at a position corresponding to the top of each first derivative, the first fan and the first outlet at a position corresponding to the top of each first derivative, and the first inlet at a position corresponding to the top of each second derivative. The display device according to claim 3, wherein two fans and a second discharge port are provided.   The display device according to claim 7, wherein the first and second derivatives have different lateral positions.   A plurality of the first inlets are arranged side by side at positions corresponding to the lower part of the first derivative, and the first fan and the first outlet are connected to the upper part of the first derivative. A plurality of the second inlets are juxtaposed in a lateral direction at corresponding positions, and a plurality of the second introduction ports are juxtaposed in a lateral direction at a position corresponding to the lower part of the second derivative. The display device according to claim 1, wherein a plurality of second discharge ports are arranged side by side at positions corresponding to the upper portion of the second derivative.   Each first inlet, each second inlet, each first fan and each first outlet, and each second fan and each second outlet are in a lateral position. The display device according to claim 9, which is different.   The display device according to claim 3, wherein the cabinet includes a duct that opens the second discharge port to an upper side than the first introduction port.

Images