JP2017049321A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of suppressing an inner protective component provided in a power supply substrate from being scattered to the outside of the display device and capable of suitably cooling the power supply substrate.SOLUTION: A display device 100 includes a display module 10 which displays an image, a power supply substrate 11 which is arranged on the back side of the display module 10 and supplies power to the display module, a back case 20 which is arranged on the back side of the display module 10, houses the power supply substrate 11, and has vent holes 21, an inner protective component 13 which is arranged on the power supply substrate 11, a heat radiation member 12 which is arranged on the power supply substrate 11 and radiates the heat of the power supply substrate 11, and a shield member 15 which is arranged between the heat radiation member 12 and the back case 20. At least one of the shield member 15 and the heat radiation member 12 is arranged on a straight line connecting the inner protective component 13 and the vent holes 21a to 21h.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a display device having an internal protection circuit on a power supply substrate.

  The display device includes a display module that displays an image using a display panel such as a liquid crystal panel, a power supply board for supplying power to the display module, and an exterior member that houses the power supply board.

  The power supply board is provided with an internal protection component having surge absorption characteristics typified by a varistor in order to protect the electronic components provided on the power supply board from lightning surges, transient overvoltage surges, and the like. Such an internal protective component for absorbing surges may gradually deteriorate and break in rare cases where abnormal voltage is repeatedly applied. It is also necessary to assume that the internal protective parts are damaged and the generated pieces of the internal protective parts are scattered.

  The power supply board generates heat by driving. When the temperature of the power supply board rises due to the generated heat, an electronic component provided on the power supply board may cause an abnormal operation.

  Patent Document 1 discloses a technique in which a cooling air passage that draws air outside the display device from a vent is provided in a space that houses a power supply substrate in an exterior member.

JP 2014-59502 A

  However, in the above-described conventional technology, when the vent hole is enlarged in order to increase the cooling efficiency of the power supply board, if the internal protective component is broken, the fragments of the internal protective component are scattered from the vent hole to the outside of the display device. There was a fear.

  Therefore, in view of the above-described problems, the present invention provides a display device that can suppress internal protection components provided on a power supply board from scattering outside the display device and can cool the power supply board suitably. The purpose is to provide.

  In order to solve the above-described problems, a display device of the present invention includes a display module that displays an image, a power supply board that is disposed on the back side of the display module and supplies power to the display module, and the display module. Arranged on the back side, housing the power supply board, having an exterior member having a first vent, an internal protection component arranged on the power supply board, and arranged on the power supply board, and radiating heat of the board A heat dissipating member and a shielding member disposed between the heat dissipating member and the exterior member, and on the straight line connecting the internal protection component and the first vent, the shielding member or the heat dissipating member At least one of them is arranged.

  According to the display device of the present invention, it is possible to suppress internal protection components provided on the power supply substrate from being scattered outside the display device, and to suitably cool the power supply substrate.

It is sectional drawing seen from the horizontal side surface side of the display apparatus 100 in a 1st Example, and a side view. It is a rear view in the AA section of Drawing 1 (a) of display device 100 in the 1st example. It is a rear view of the display apparatus 1000 when the shielding member 15 is not arranged for comparison with the first embodiment. In 1st Example, it is the rear view which added the dimension between each of the thermal radiation member 12, the internal protection component 13, the shielding member 15, and vent 21a-21h. It is the rear view which showed the 1st modification of the 1st Example which satisfy | fills Formula 1 and Formula 2. FIG. It is the rear view which showed the 2nd modification of the 1st Example. It is a rear view at the time of arrange | positioning the electrolytic capacitors 112a-112c as the thermal radiation member 12. FIG. It is the rear view which looked at the AA cross section in Fig.1 (a) of the display apparatus 200 in a 2nd Example from the back side. It is the rear view which looked at the AA cross section in Fig.1 (a) of the display apparatus 300 in a 3rd Example from the back side. It is sectional drawing seen from the side surface side of the horizontal direction of the display apparatus 400 in a 4th Example. It is the rear view which looked at the BB cross section in FIG. 10 of the display apparatus 400 in a 4th Example from the back side.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The technical scope of the present invention is determined by the scope of claims, and is not limited by the examples illustrated below. Further, not all the combinations of features described in the embodiments are essential to the present invention. The contents described in this specification and drawings are illustrative and should not be construed as limiting the present invention. Various modifications (including organic combinations of the embodiments) are possible based on the spirit of the present invention, and they are not excluded from the scope of the present invention. That is, all configurations in which the embodiments and their modifications are combined are also included in the present invention.

(First embodiment)
1A and 1B are a cross-sectional view and a side view of a display device 100 according to a first embodiment of the present invention as viewed from the side surface in the horizontal direction. FIG. 1A is a cross-sectional view of the display device 100 according to the first embodiment of the present invention as viewed from the side surface in the horizontal direction. The right direction in FIG. 1A is the front side of the display device 100, and the left direction in FIG. 1A is the back side of the display device 100.

  The display device 100 includes a display module 10, a frame 5, a power supply substrate 11, a heat radiating member 12, an internal protection component 13, a cooling fan 14, a shielding member 15, and a back case 20. The display module 10 includes a backlight module 1, an optical sheet 2, a panel holder 3, and a liquid crystal panel 4.

  The backlight module 1 irradiates the optical sheet 2 with light. The backlight module 1 includes a light source 6, a light source substrate 7, and a backlight housing 8. A plurality of light sources 6 are provided on the light source substrate 7. In the first embodiment, the light source 6 is a Light Emitting Diode (LED) light source. The light source 6 may be a light source using a cold cathode tube. The backlight housing 8 is a box-shaped housing having an opening on the front surface side made of metal, and houses the light source 6 and the light source substrate 7.

  Note that the backlight housing 8 may contain a reflection sheet for more efficiently irradiating light generated by the light source 6. Moreover, the backlight housing | casing 8 can also be shape | molded by materials, such as resin. In the first embodiment, the backlight module 1 is a so-called direct type backlight, but may be an edge type backlight.

  The optical sheet 2 is a resin optical member that is disposed on the front side of the backlight module 1 and that irradiates the liquid crystal panel 4 by diffusing or polarizing light emitted from the backlight module 1. The characteristics of the optical sheet 2 can be arbitrarily selected by the designer or manufacturer of the display device 100 in order to satisfy the desired performance for the display device 100. The optical sheet 2 is sandwiched and fixed between a frame-shaped panel holder 3 formed of resin or the like and the backlight module 1.

  The liquid crystal panel 4 is a display panel having a plurality of liquid crystal elements whose transmittance can be individually controlled. The liquid crystal panel 4 controls the transmittance of each liquid crystal element based on the input image signal. The liquid crystal panel 4 transmits a part of the light irradiated from the backlight module 1 and passed through the optical sheet 2, and displays an image on the screen on the front side of the liquid crystal panel 4.

  The frame 5 is a member formed in a frame shape so as to expose the screen of the liquid crystal panel 4, and covers a part of the front side of the display module 10 and the side surface side. The frame 5 is formed by extrusion molding or die pressing using a metal such as aluminum, iron, or magnesium. The frame 5 can also be molded by injection molding using a resin material.

  The power supply substrate 11 is provided on the back side of the display module 10 and supplies power to the display module 10. On the power supply board 11, a plurality of electronic components for supplying power to the display module 10 are arranged in addition to the heat radiating member 12 and the internal protection component 13 described later. The power supply board can supply a voltage supplied from the outside to the display module 10 and a drive board (not shown) that drives the display module 10.

  The heat dissipating member 12 is a heat sink that is disposed on the power supply substrate 11 and dissipates heat generated in the power supply substrate 11 around the heat dissipating member 12. The heat dissipating member 12 is preferably made of a material having a high thermal conductivity such as aluminum, iron, copper, etc., and has a concave-convex or wing-like structure on the surface so as to increase the surface area. Of the electronic components disposed on the power supply substrate 11, an electronic component that generates a large amount of heat when driven may be disposed so as to be in direct contact with the heat dissipation member 12.

  The internal protection component 13 is a member having surge absorption characteristics provided on the power supply substrate 11 in order to protect electronic components arranged on the power supply substrate 11 from lightning surges, transient overvoltage surges, and the like. The internal protection component 13 is a resistance element having a non-linear voltage-current characteristic called a varistor that reduces the electrical resistance when a voltage equal to or higher than a predetermined voltage is applied to the internal protection component 13. The internal protection component 13 may be a surge protection device such as an arrester or a surge absorber.

  The cooling fan 14 is an exhaust unit that exhausts air in the back case 20 described later to the outside of the back case 20.

  The shielding member 15 is a member provided so that fragments of the internal protection component 13 are not scattered outside when the internal protection component 13 is damaged. The shielding member 15 is provided in the vicinity of the heat dissipation member 12 and is disposed between the heat dissipation member 12 and the back case 20. The shielding member 15 is desirably formed of a material having high insulation and flame retardancy. For example, the shielding member 15 is a member formed of a resin such as polycarbonate or polyethylene terephthalate. In the first embodiment, the shielding member 15 is made of sheet-like polycarbonate having a thickness of 0.5 mm.

  The back case 20 is an exterior member that is disposed on the back side of the display module 10 and houses the power supply substrate 11, the heat radiating member 12, the internal protection component 13, the cooling fan 14, and the shielding member 15. In order to dissipate the heat in the back case 20 to the outside, the back case 20 is preferably formed of a material having a low thermal conductivity such as metal. In the first embodiment, the back case 20 is formed by molding an aluminum plate having a thickness of 1 mm into a box shape. An exhaust port 24 is provided on the back surface of the back case 20 facing the cooling fan 14.

  FIG.1 (b) is the side view seen from the side surface side of the horizontal direction of the display apparatus 100 in the 1st Example of this invention. A display module 10 is accommodated inside the frame 5. On the side surface of the back case 20, substantially rectangular vent holes 21 a to 21 h are provided. The vent holes 21a to 21h are not limited to a substantially rectangular shape, and may be a circular shape or the like. Further, the air holes include gaps, slits, and the like due to matching of corners that occur when the back case 20 is formed of sheet metal. Further, the vent holes 21a to 21h can be formed by one vent hole 21.

  By driving the cooling fan 14, external air is sucked into the back case 20 from the vent holes 21 a to 21 h, and air in the back case 20 is exhausted from the exhaust port 24. The air sucked from the vent holes 21a to 21h passes through the vicinity of the heat radiating member 12, whereby the heat radiating member 12 is cooled. FIG. 2 is a rear view of the display device 100 according to the first embodiment, taken along the line AA in FIG. The cable 16 is a wiring that transmits the power supplied from the power supply board 11 to the display module 10. In addition to the above, the power supply from the power supply board 11 is also supplied to a drive board (not shown). The AC input terminal 17 is connected to an external power source (not shown) and supplies power to the power supply board. The internal protection component 13 is provided between the AC input terminal 17 and the electronic component in order to protect the electronic component provided on the power supply board 11 when a voltage larger than a predetermined voltage is applied to the AC input terminal 17. Be placed.

  The shielding member 15 is a member molded into an L shape when viewed from the back side. In other words, it can be said that the shielding member 15 has an L shape in a plane perpendicular to the surface of the rear case 20 provided with the vent holes 21a to 21h. One surface of the L-shape of the shielding member 15 is arranged so as to contact the back case 20. The bottom surface of the shielding member 15 is fixed to the back case with an adhesive member such as a double-sided tape or an adhesive. The bottom surface of the shielding member 15 may be fixed to the back case 20 by using a fixing member such as a screw instead of bonding.

  The heat radiating member 12 is arranged on a straight line connecting each of the vent holes 21 a to 21 f and the internal protection component 13. Further, the shielding member 15 is arranged on a straight line connecting the vent 21g or 21h and the internal protection component 13. In other words, it can be said that at least one of the shielding member 15 or the heat radiating member 12 is arranged on a straight line connecting the vent holes 21 a to 21 h and the internal protection component 13. By disposing the heat radiating member 12 and the shielding member 15 in this manner, even when the internal protection component 13 is damaged, it is possible to prevent fragments of the internal protection component 13 from directly coming out of the vents 21a to 21h. It becomes possible to do.

  Further, since the heat radiating member 12 faces the vent holes 21 a to 21 h, the air sucked from the vent holes 21 a to 21 h passes through the vicinity of the heat radiating member 12 and reaches the cooling fan 14. Therefore, the heat released from the heat dissipation member 12 into the air can be quickly discharged, and the power supply substrate 11 can be suitably cooled.

  FIG. 3 is a rear view of the display device 1000 when the shielding member 15 is not disposed for comparison with the first embodiment. The first embodiment described with reference to FIG. 2 is different from the first embodiment in that the shielding member 15 is not provided, and the other members are the same, and thus the description thereof is omitted.

  According to this comparative example, the shielding member 15 is not disposed on the straight line indicated by the arrow in FIG. 3 between the internal protection component 13 and the vent hole 21g and the vent hole 21h. In this case, a part of the fragments of the internal protection component 13 that has been ruptured and scattered by the internal protection component 13 may be scattered to the outside through the vent 21g or the vent 21h through the path indicated by the arrow in FIG.

  Further, when only the vent holes 21a to 21f are provided in order to prevent the fragments of the internal protection component 13 from being scattered, the number of the vent holes 21 is reduced and the amount of air sucked from the outside is reduced. The cooling efficiency to the member 12 will fall.

  The positional relationship among the heat radiation member 12, the internal protection component 13, the shielding member 15, and the vent holes 21a to 21h in the first embodiment will be described in detail. FIG. 4 is a rear view in which dimensions between the heat dissipation member 12, the internal protection component 13, the shielding member 15, and the vent holes 21a to 21h are added to the rear view shown in FIG.

  In the direction (horizontal direction) from the internal protection component 13 toward the surface of the back case 20 in which the vents 21 a to 21 h are arranged, the internal protection component 13 and the heat dissipation member 12 or the shielding member 15 are connected to the internal protection component 13. It is the distance to the closest one. L2 is the distance between the inner protection component 13 and the surface of the back case 20 on which the vent holes 21a to 21h are arranged in the horizontal direction.

  L3 is the distance between the internal protection component 13 and the end of the heat dissipation member 12 in the upward direction (vertical direction) perpendicular to the horizontal direction. L4 is the distance between the internal protection component 13 and the end of the shielding member 15 in the downward direction in the vertical direction.

  Ya is the distance between the internal protection component 13 and the end of the vent 21a in the vertical upward direction. In other words, Ya can be said to be the longest distance among the distances between the internal protection component 13 and the ends of the vent holes 21a to 21h in the upward direction in the vertical direction. Ya satisfies the relationship of Equation 1.

  Yb is the distance between the internal protection component 13 and the end of the vent 21h in the downward direction in the vertical direction. In other words, Yb can be said to be the longest distance among the distances between the internal protection component 13 and the end portions of the vent holes 21a to 21h in the downward direction in the vertical direction. Yb satisfies the relationship of Equation 2.

  The internal protection component 13 and the vent holes 21a to 21h are connected by determining the arrangement of the heat dissipation member 12, the internal protection component 13, the shielding member 15, and the vent holes 21a to 21h so as to satisfy the expressions 1 and 2. The heat radiating member 12 or the shielding member 15 is arranged on a straight line. Therefore, when the internal protection component 13 is damaged, it is possible to suppress the fragments of the internal protection component 13 from being scattered outside the display device 100 and to cool the power supply substrate 11 appropriately.

  FIG. 5 is a rear view showing the display device 110 according to the first modification of the first embodiment. In FIG. 5, the shielding member 25 is a plate-like member provided on the lower side in the vertical direction of the heat dissipation member 12. At this time, L1 to L4, and Ya and Yb satisfy Expressions 1 and 2. According to the modification shown in FIG. 5, the internal protection component 13 is damaged, and a part of the scattered pieces of the internal protection component 13 is scattered along the arrow, and before reaching the vent hole 21 h, the shielding member 25. Collide with.

  FIG. 6 is a rear view showing the display device 120 according to the second modification of the first embodiment. In FIG. 6, the shielding member 35 has a U shape when viewed from the back side, and is disposed between the vent holes 21 g and 21 h and the internal protection component 13. In other words, it can be said that the shielding member 15 has a U-shape in a plane perpendicular to the surface of the back case 20 provided with the vent holes 21a to 21h.

  By arranging the U-shaped shielding member 35, two walls are arranged between the vent holes 21 g and 21 h and the internal protection component 13. Therefore, the internal protective component 13 is damaged, and the scattered pieces of the internal protective component 13 are more difficult to reach the vents 21g and 21h.

  As described above, in the display device 100 according to the first embodiment, the shielding member 15 is disposed on the straight line connecting the internal protection component 13 and the vent holes 21g and 21h in the back case 20. As a result, when the internal protection component 13 provided on the power supply substrate 11 is damaged, the fragments of the internal protection component 13 are prevented from being scattered outside the display device 100, and the power supply substrate 11 is suitably cooled. It becomes possible.

  In the first embodiment, the display module 10 uses the liquid crystal panel 4 as a display panel, but the present invention is not limited to this. A display module using a transmissive display panel other than a liquid crystal panel, or a display module using a self-luminous display panel using a self-luminous element such as an Organic Light-Emitting Diode (OLED) It may be.

  Moreover, the heat radiating member 12 is not restricted to a heat sink. The heat dissipating member 12 only needs to be able to release heat generated in the power supply substrate 11. For example, the heat dissipation member 12 may be an electrolytic capacitor disposed on the power supply substrate 11. FIG. 7 is a rear view of the display device 120 in which the electrolytic capacitors 112 a to 112 c are arranged as the heat radiating member 12. The electrolytic capacitors 112 a to 112 c are electronic components having a cylindrical exterior portion, and generate heat by being driven on the power supply substrate 11. Then, the electrolytic capacitor 112 releases the generated heat to the periphery of the electrolytic capacitor 112 through the exterior portion.

  The heat radiating member 12 has a shape extending in a direction parallel to at least one of the surfaces of the opposing back case. The cooling fan 14 may be disposed away from the heat radiating member 12 in the direction in which the heat radiating member 12 extends, and the shielding member 15 may be disposed on the opposite side of the cooling fan 14 across the heat radiating member 12 in this direction. desirable. At this time, the area | region which can arrange | position the vent 21 on the side by which the shielding member 15 is arrange | positioned with respect to the heat radiating member 12 increases. The air sucked from the vent 21 arranged in the increased area passes through the vicinity of the heat radiating member 12 and reaches the cooling fan 14, whereby the cooling efficiency of the heat radiating member 12 can be increased.

(Second embodiment)
FIG. 8 is a rear view of the display device 200 according to the second embodiment. Since elements having the same reference numerals as those in the first embodiment have the same functions as those in the first embodiment, description thereof will be omitted.

  The shielding member 45 is an L-shaped highly flame retardant and insulating member, and is arranged on a straight line connecting the vent 21g and vent 21h to the internal protection component 13. In the second embodiment, the shielding member 45 is provided with openings 46a and 46b on an L-shaped bottom surface. In addition, vents 22a and 22b are provided at locations corresponding to the openings 46a and 46b of the back case 20, respectively.

  At this time, the shielding member 45 is disposed on a straight line connecting the internal protection component 13 and the vent hole 22a and the vent hole 22b.

  When the cooling fan 14 is driven, the air sucked from the vent holes 21a to 21h passes through the vicinity of the heat radiating member 12, and the air sucked from the vent holes 22a and 22b moves near the heat radiating member 12. pass. Therefore, the cooling efficiency of the heat radiating member 12 can be improved by passing more air in the vicinity of the heat radiating member 12 than in the first embodiment.

  According to the display device 200 in the second embodiment, the shielding member 45 is arranged on the straight line connecting the internal protection component 13 and the vent holes 21g and 21h in the back case 20. As a result, when the internal protection component 13 provided on the power supply substrate 11 is damaged, the fragments of the internal protection component 13 are prevented from being scattered outside the display device 200, and the power supply substrate 11 is suitably cooled. It becomes possible. Furthermore, it becomes possible to increase the cooling efficiency of the heat radiating member 12 by increasing the vent holes 22a and 22b.

(Third embodiment)
FIG. 9 is a rear view of the display device 300 according to the third embodiment. Since elements having the same reference numerals as those in the first embodiment have the same functions as those in the first embodiment, description thereof will be omitted.

  The shielding member 55 is an L-shaped highly flame retardant and insulating member, and is disposed on a straight line connecting the vent holes 21 g and 21 h and the internal protection component 13. In the third embodiment, of the L-shape of the shielding member 55, the surface that does not contact the back case 20 is disposed closer to the internal protection component 13 than the heat radiating member 12, and a part of the heat radiation member is perpendicular to the vertical direction. 12 and overlap. That is, the shielding member 15 and the heat radiating member 12 have a region arranged so as to overlap with a straight line connecting the internal protection component 13 and the vent holes 21a to 21h.

  A part of the shielding member 55 is overlapped with the heat radiating member 12 and the gap is reduced with respect to the internal protection component 13, so that the fragments of the internal protection component 13 that are broken due to damage to the internal protection component 13 are vent holes 21 a to 21 h. It is possible to further suppress scattering to the side.

  According to the display device 300 in the third embodiment, the shielding member 55 is arranged on a straight line connecting the internal protection component 13 and the vent holes 21g and 21h in the back case 20. Thereby, it is possible to suppress the internal protection component 13 provided on the power supply substrate 11 from being scattered outside the display device 300 and to cool the power supply substrate 11 appropriately. Furthermore, since the gap between the heat dissipation member 12 and the shielding member 55 is reduced, it is possible to further suppress the fragments of the internal protection component 13 that are broken and scattered from the internal protection component 13 from being scattered outside the display device 300. Is possible.

(Fourth embodiment)
FIG. 10 is a cross-sectional view of the display device 400 according to the fourth embodiment when viewed from the side surface in the horizontal direction. FIG. 11 is a rear view of the display device 400 according to the fourth embodiment, as viewed from the rear side in the BB cross section in FIG. Since elements having the same reference numerals as those in the first embodiment have the same functions as those in the first embodiment, description thereof will be omitted.

  In the fourth embodiment, the heat dissipating member 12 is low in height from the substrate toward the back surface, and there is a gap between the back surface of the back case 20. The shielding member 65 is disposed between the rear side end of the heat dissipation member 12 and the back surface of the back case 20. The shielding member 65 is preferably arranged so as to fill a gap between the heat dissipation member 12 and the back case 20.

  When the shielding member 65 is not provided, the internal protection component 13 debris that has been scattered due to damage to the internal protection component 13 passes through the gap between the heat dissipation member 12 and the back surface of the rear case 20 and passes through a part of the vent holes 21a to 21h. There is a risk of splashing outside. By disposing the shielding member 65 between the heat radiating member 12 and the back surface of the back case 20, it is possible to prevent the fragments that are scattered due to damage to the internal protection component 13 from moving toward the vent hole 21.

  According to the display device 400 in the fourth embodiment, the shielding member 65 is arranged on the straight line connecting the internal protection component 13 and the vent holes 21g and 21h in the back case 20. As a result, when the internal protection component 13 provided on the power supply substrate 11 is damaged, the fragments of the internal protection component 13 are prevented from being scattered outside the display device 400, and the power supply substrate 11 is suitably cooled. It becomes possible. Further, the shielding member 65 is provided between the heat radiating member 12 and the back surface of the back case 20, thereby preventing fragments from passing between the heat radiating member 12 and the back surface of the back case 20 and scattering outside. It becomes possible to do.

  In the present embodiment, the shielding member 65 is the same member, but is provided between the shielding member disposed on the lower side in the vertical direction of the heat radiating member 12 and the heat radiating member 12 and the back surface of the back case 20. It is also possible to form and arrange the shielding members as separate members.

DESCRIPTION OF SYMBOLS 100 Display apparatus 10 Display module 11 Power supply board 12 Heat radiation member 13 Internal protection component 15 Shielding member 20 Back case 21a-21h Vent

Claims (17)

A display module for displaying images;
A power supply board disposed on the back side of the display module for supplying power to the display module;
An exterior member disposed on the back side of the display module, housing the power supply substrate, and having a first vent;
An internal protection component disposed on the power supply board;
A heat dissipating member disposed on the power supply substrate to dissipate heat of the substrate;
A shielding member disposed between the heat dissipation member and the exterior member,
At least one of the said shielding member or the said heat radiating member is arrange | positioned on the straight line which connects the said internal protection component and the said 1st vent hole.   The display device according to claim 1, wherein a plurality of the first vent holes are provided in the exterior member.   The display device according to claim 1, wherein the shielding member has a surface in contact with the exterior member.   The shielding member has an L shape in a plane perpendicular to the surface of the exterior member on which the first vent is provided, and is disposed so that one surface is in contact with the exterior member. The display device according to claim 3, wherein:   The first vent is provided on a side surface of the exterior member, and the shielding member has an L shape when viewed from the back side of the display device, and one surface is in contact with the exterior member. The display device according to claim 4, wherein the display device is disposed on the screen.   The display device according to claim 3, wherein the shielding member has a U-shape in a plane perpendicular to a surface of the exterior member on which the first ventilation hole is provided.   The display according to claim 6, wherein the first ventilation hole is provided on a side surface of the exterior member, and the shielding member has a U-shape when viewed from the back side of the display device. apparatus.   The shielding member is disposed on a straight line that connects the second ventilation port provided at a position corresponding to the opening provided on the surface of the shielding member that contacts the exterior member and the internal protection component. The display device according to claim 3, wherein the display device is a display device.   The heat dissipation member is an electronic component that generates heat by being driven, and the electronic component includes dissipating the generated heat to the surroundings. The display device according to item.   The display device according to claim 9, wherein the electronic component is an electrolytic capacitor.   The display device according to claim 1, wherein the shielding member is made of a flame-retardant material.   The internal protection component is a non-linear voltage-current characteristic that protects an electronic component disposed on the substrate by reducing an electrical resistance when a voltage equal to or higher than a predetermined voltage is applied to the internal protection component. The display device according to any one of claims 1 to 11, wherein the display device is a resistance element having a resistance.   The display device according to claim 1, wherein the internal protection component is a surge protection device. An exhaust means for discharging the air inside the exterior member to the outside;
The exhaust unit is arranged so that at least a part of the air sucked from the first vent passes through the vicinity of the heat radiating member and reaches the exhaust unit. The display device according to claim 13. The exterior member has a box shape,
The heat dissipation member has a shape extending in a direction parallel to the surface of the facing exterior member,
The exhaust means is disposed away from the heat dissipation member in the direction,
The display device according to claim 14, wherein the shielding member is disposed at a position opposite to the exhaust unit in the direction with respect to the heat radiating member.   The said shielding member and the said heat radiating member have the area | region arrange | positioned so that it may overlap with the direction perpendicular | vertical with respect to the straight line which connects the said internal protection component and the said 1st vent hole. The display device according to any one of claims 15 to 15.   The display device according to claim 1, wherein the shielding member is provided between the heat radiating member and a back surface of the exterior member.

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