JP2005062777A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device which prevents dew condensation of a panel, arranged in the front surface of a display unit. <P>SOLUTION: The display device is provided with a liquid crystal unit 11, having a main surface and a protective filter 10, which is fixed to the liquid crystal unit 11 via a fixing member 12a so as to be in parallel with the main surface of the liquid crystal unit 11, has a narrow clearance space surrounded by the main surface of the liquid crystal unit 11, the protective filter 10 and the fixing member 12a and further being provided with a ventilation means for enabling circulation of air between the narrow clearance space and the outside thereof. The ventilation means contains an auxiliary trench 1, formed at a side where the protective filter 10 of the fixing member 12a is fixed and a communicating hole 2 which communicates the auxiliary trench 1 with the internal space of the display device. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a display device. In particular, the present invention relates to a display device in which a panel such as a filter is mounted outside the display monitor.

  In a display device such as a video monitor, a panel such as a protection filter or a touch panel for protecting the main surface from being damaged may be attached to the main surface of the display monitor on which video is displayed. FIG. 16 is an exploded view of a liquid crystal display device among the display devices based on the prior art. The video is displayed on the main surface of the liquid crystal unit 11 as a display unit. In this liquid crystal display device, a protective filter 10 as a panel is attached so as to be parallel to the main surface of the liquid crystal unit 11. The protective filter 10 is for protecting the main surface of the liquid crystal unit 11. The liquid crystal unit 11 and the protective filter 10 are fixed via a fixing member 15.

  The fixing member 15 is formed in a frame shape, and a filter insertion portion 31 for inserting the protective filter 10 is formed on one side. The filter insertion portion 31 is a portion recessed inward in accordance with the outer shape of the protective filter 10. The bottom surface of the filter insertion portion 31 is formed in a flat shape, and the protective filter 10 is fixed so that no gap is generated between the protective filter 10 and the fixing member 15 with the double-sided tape 20 interposed therebetween. A gap preventing cushion 22 is sandwiched between the fixing member 15 and the liquid crystal unit 11. The gap prevention cushion 22 is for preventing dust from entering due to a gap between the liquid crystal unit 11 and the fixing member 15. The gap prevention cushion 22 is affixed to the fixing member 15 and the liquid crystal unit 11 with a double-sided tape (not shown). Each double-sided tape is formed in a frame shape, and is affixed so that there is no gap between members to be bonded and fixed. These members are arranged in the main body cabinet 13 as indicated by an arrow 51.

  17 (a) and 17 (b) are explanatory diagrams of a display device based on the prior art, FIG. 17 (a) is a plan view, and FIG. 17 (b) is XVIIB-XVIIB in FIG. 17 (a). It is arrow sectional drawing regarding a line.

  The display device is integrally formed, and an outer casing is formed by the fixing member 15 and the main body cabinet 13. The fixing member 15 and the main body cabinet 13 are bonded and fixed. The liquid crystal unit 11 is disposed inside a housing surrounded by the fixing member 15 and the main body cabinet 13. A protective filter 10 is disposed on the front side of the image plane of the liquid crystal unit 11.

  FIG. 18 shows an enlarged view of the F portion in FIG. The fixing member 15 and the protective filter 10 are bonded and fixed with a double-sided tape 20, and the fixing member 15 and the liquid crystal unit 11 are bonded and fixed with a double-sided tape 21 via a gap prevention cushion 22. The double-sided tapes 20 and 21 have a role of sealing so that dust does not enter the inside of the apparatus in addition to the role of bonding and fixing the respective members. A sealed space surrounded by the liquid crystal unit 11, the fixing member 15, and the protective filter 10 is formed. In the present specification, a space sealed between at least the display unit and the panel is referred to as a “narrow space”.

Japanese Patent Application Laid-Open No. 7-67058 discloses a display panel that prevents condensation from occurring due to a temperature difference between the outside air and the inside in a camera door phone or the like. In this display panel, a waterproof double-sided tape is interposed between the display panel body and the front panel, and both are fixed. The waterproof double-sided adhesive tape has a round hole formed in the lens portion. In portions other than the lens portion, a large number of spaces are formed between the display panel body and the front panel. With the waterproof double-sided adhesive tape, heat can be released to portions other than the lens portion, and heat transfer can be delayed by an air film provided between the display panel body and the front panel. Therefore, it is possible to prevent condensation on the back surface of the display panel.
Japanese Patent Laid-Open No. 7-67058 (paragraph 5-14, FIG. 1)

  An image or the like is displayed on the main surface of the liquid crystal unit 11. For example, as shown in FIG. 18, when the image plane of the liquid crystal unit 11 is placed on the upper side and used, heat generated from the liquid crystal unit 11 in the narrow space is generated inside the narrow space as indicated by an arrow 44. It stays at. Accordingly, the temperature inside the narrow space becomes higher than the temperature of the outside air, and condensation may occur in the protective filter 10 due to this temperature difference. In particular, condensation occurred on the inner surface of the protective filter 10.

  In the display panel disclosed in Japanese Patent Application Laid-Open No. 7-67058, the portion where condensation should be avoided is only the region where the lens is formed, and the other portions may be attached with double-sided adhesive tape. I do not care. However, in the display device, it is impossible to dispose a heat transfer material such as a double-sided adhesive tape in a portion where the image is displayed so that the image can be seen from the outside.

  An object of the present invention is to solve the above-described problems, and an object of the present invention is to provide a display device that prevents condensation on a panel disposed on the front surface of the display unit.

  In order to achieve the above object, a display device according to the present invention includes a display unit having a main surface and a panel fixed to the display unit so as to be parallel to the main surface via a fixing member. A narrow space surrounded by the main surface, the panel and the fixing member, and a ventilation means for allowing air to flow between the narrow space and the outside of the narrow space. By adopting this configuration, it is possible to prevent condensation on the panel.

  In the present invention, preferably, the ventilation means includes an open groove for communicating the narrow space and the outside of the display device on a side of the fixing member where the panel is fixed. By adopting this configuration, the ventilation means can be easily formed.

  Preferably, in the above invention, a main body cabinet bonded and fixed to the fixing member is provided, the display unit is disposed in an internal space surrounded by the fixing member and the main body cabinet, and the ventilation means is the narrow space. And internal communication means for communicating with the internal space. By adopting this configuration, the inside and outside of the display device are not communicated with each other, and foreign matters such as dust can be prevented from entering the inside from the outside.

  In the present invention, preferably, the internal communication means includes an auxiliary groove formed on a side of the fixing member on which the panel is fixed, and a communication hole that connects the auxiliary groove and the internal space. By adopting this configuration, the internal communication means can be easily formed.

  Preferably, in the above invention, the fixing member includes a through hole for communicating the internal space and the outside of the display device. By adopting this configuration, the heat inside the display device can be released to the environment, and the ability to suppress the temperature rise of the narrow space is improved.

  In the above invention, preferably, the ventilation means includes a side wall on which a non-curable adhesive member is disposed. By adopting this configuration, foreign matter such as dust can be adhered to the adhesive member, and entry into the display device can be suppressed.

  Preferably, in the above invention, the venting means is formed on the fixing member, and more of the display device is formed on the upper side in use than the other side. By adopting this configuration, heat can be efficiently released from the narrow space.

  In the above invention, preferably, the display unit is a liquid crystal display unit. The liquid crystal display unit is often thin and lightweight. Therefore, the liquid crystal display device provided with the liquid crystal display unit may be used at any time by changing the installation location, and the external temperature may change rapidly. In such a case, the effect of the present invention is particularly remarkable.

  ADVANTAGE OF THE INVENTION According to this invention, the display apparatus which can prevent dew condensation of a panel can be provided.

(Embodiment 1)
(Constitution)
With reference to FIGS. 1 to 5, a display device according to the first embodiment of the present invention will be described.

  FIG. 1 is an exploded view of a display device according to the present embodiment. The display device in this embodiment is a liquid crystal display device using a liquid crystal unit. In the liquid crystal display device according to the present embodiment, a protective filter 10 as a panel is attached to the front surface. The protective filter 10 is for protecting the surface on which the image of the liquid crystal unit 11 is displayed from being damaged. The protective filter 10 is formed in a flat plate shape having a substantially rectangular planar shape. The protective filter 10 is attached to the liquid crystal unit 11 via a fixing member 12a. A filter insertion portion 30a for inserting the protective filter 10 is formed on the upper surface of the fixing member 12a. The protective filter 10 is affixed to the fixing member 12a by the double-sided tape 20. The double-sided tape 20 is formed in a frame shape so as to follow the shape of the bottom surface of the filter insertion portion 30a. The double-sided tape 20 is a combination of four rectangular double-sided tapes.

  The liquid crystal unit 11 is bonded to the side of the fixing member 12a opposite to the side where the filter insertion portion 30a is formed via the gap prevention cushion 22. The gap prevention cushion 22 is elastic. The gap prevention cushion 22 is for preventing a gap from being generated between the fixing member 12 a and the liquid crystal unit 11. The gap preventing cushion 22 and the fixing member 12a are attached to each other with a double-sided tape (not shown). The gap preventing cushion 22 and the liquid crystal unit 11 are attached to each other with a double-sided tape (not shown). Similar to the double-sided tape 20, these double-sided tapes are formed in a frame shape. Each member is housed and integrated in the main body cabinet 13 as indicated by an arrow 50. The main body cabinet 13 is formed so as to surround devices such as the liquid crystal unit 11. The fixing member 12a is bonded and fixed to the main body cabinet 13. The casing of the liquid crystal display device is formed by bonding and fixing the fixing member 12a and the main body cabinet 13 together.

  2A and 2B are explanatory diagrams of the display device in this embodiment, FIG. 2A is a plan view of the display device, and FIG. 2B is FIG. 2 is a cross-sectional view taken along the line IIB-IIB in FIG.

  The protective filter 10 is fitted into the fixing member 12a, and the main surface of the display device is formed in a flat shape. On the front side of the protective filter 10, an opaque region 61 is formed along the outer edge of the protective filter 10 in order to hide the double-sided tape attached to the back side. The liquid crystal unit 11 is disposed inside a space surrounded by the protective filter 10, the fixing member 12 a, and the main body cabinet 13. The liquid crystal unit 11 is bonded and fixed to the fixing member 12a so as to display an image on the side where the protective filter 10 is disposed.

  FIG. 3 shows an enlarged view of a portion A in FIG. The fixing member 12a and the main body cabinet 13 are fixed so that their end faces are bonded to each other, and an internal space that is the inside of the housing of the display device is formed. The protective filter 10 is fitted in the filter insertion portion 30a of the fixing member 12a. The protective filter 10 and the fixing member 12 a are bonded and fixed with a double-sided tape 20. The fixing member 12 a and the liquid crystal unit 11 are bonded and fixed via a gap prevention cushion 22. The gap prevention cushion 22 is adhesively fixed to the fixing member 12 a and the liquid crystal unit 11 using a double-sided tape 21. A narrow space is formed between the liquid crystal unit 11 and the protective filter 10. The image plane of the liquid crystal unit 11 and the protective filter 10 are formed to be substantially parallel.

  FIG. 4A and FIG. 4B are explanatory diagrams of the fixing member in the present embodiment. Fig.4 (a) is a top view of the fixing member 12a, FIG.4 (b) is arrow sectional drawing regarding the IVB-IVB line | wire in Fig.4 (a). The fixing member 12a is formed in a frame shape such that the inner and outer planar shapes are rectangular. The filter insertion portion 30a is formed so as to cut out the surface of the fixing member 12a, and the bottom surface of the filter insertion portion 30a is planar.

  In the present embodiment, as the ventilation means for enabling air to flow between the narrow space and the outside of the narrow space, an internal communication means for communicating with the narrow space and the internal space of the display device is provided. ing. As an internal communication means, an auxiliary groove 1 and a communication hole 2 are formed on the bottom surface of the filter insertion portion 30a. The auxiliary groove 1 is formed to be perpendicular to one side of a rectangle that is the shape of the outer edge of the fixing member 12a. A communication hole 2 penetrating the fixing member 12a in the vertical direction is formed at the outer end of the auxiliary groove 1.

  In FIG. 4A, the direction indicated by the arrow 52 is the upper side when the display device is used. In the filter insertion portion 30a, the auxiliary grooves 1 and the communication holes 2 are formed more on the side indicated by the arrow 52 than on the other side. Of the rectangle that is the shape of the inner edge of the filter insertion portion 30a, the side on the side indicated by the arrow 52 is formed with 16 auxiliary grooves 1 and communication holes 2, whereas the other side is Are each formed with eight auxiliary grooves 1 and communication holes 2. That is, more ventilation means are formed on the upper side of the fixing member 12a than on the other side on the upper side during use.

  FIG. 5 shows an enlarged view of a portion B in FIG. The auxiliary groove 1 is formed in a groove shape that is deeper than the bottom surface of the filter insertion portion 30a. The auxiliary groove 1 is formed so as to go from the inner side to the outer side of the filter insertion portion 30a. The communication hole 2 is formed so as to communicate between the filter insertion portion 30a and the side opposite to the side on which the protective filter is attached. The communication hole 2 is formed so as to be connected to the end of the auxiliary groove 1.

(Action / Effect)
As shown in FIG. 3, since the protective filter 10 covers substantially the entire bottom surface of the filter insertion portion 30a, the narrow space becomes a sealed space. Here, the auxiliary groove 1 and the communication hole 2 are formed in the fixing member 12a. As a result of the formation, the narrow space and the internal space communicate with each other to allow air to flow.

  In the display device, an image surface on which an image or the like is displayed is in contact with a narrow space sandwiched between the liquid crystal unit 11 and the protective filter 10. When the liquid crystal unit 11 is driven, the liquid crystal unit 11 generates heat and the temperature of the narrow space increases. The fixing member 12a in the present embodiment includes an internal communication means for communicating the narrow space and the internal space of the display device. For this reason, as shown by the arrow 40, the heat | fever of narrow space can be discharge | released to internal space, and it can suppress that the temperature of narrow space rises. Heat in the narrow space and the internal space is released to the outside of the display device from the outer surface of the protective filter 10, the fixing member 12a, and the main body cabinet 13. Thus, the transmission area for releasing heat to the outside can be increased. As a result, the temperature difference between the inside and the outside of the protective filter can be reduced to prevent condensation.

  Thus, by providing the ventilation means for enabling air to flow between the narrow space and the outside of the narrow space, it is possible to prevent dew condensation on the protective filter.

  By forming the internal communication means for communicating the narrow space and the internal space as the ventilation means, it is possible to suppress an increase in the temperature of the narrow space without adopting a structure communicating with the outside of the display device. Therefore, foreign matter such as dust can be prevented from entering the inside of the display device from the outside. As the internal communication means, the above internal communication means can be easily formed by forming an auxiliary groove formed on the side where the protective filter is bonded and fixed, and a communication hole that connects the auxiliary groove and the internal space of the display device. can do.

  In the present embodiment, more ventilation means are formed on the upper side when the display device is used than on the other side. In a narrow space, the upper side becomes hot during use due to convection. Therefore, by forming a lot of ventilation means on this side, hot air is efficiently discharged from the narrow space to the outside. The number of ventilation means on each side is preferably adjusted according to the amount of heat generated by the display device and the direction in which the display device is used.

  The display device in this embodiment is a liquid crystal display device. Many liquid crystal display devices can be easily carried because they are thin and light. Therefore, the environmental temperature outside the display device may change abruptly. In such a case, dew condensation is particularly likely to occur, and the effect of preventing dew condensation becomes significant by applying the present invention to a liquid crystal display device.

  In the present embodiment, a protective filter is attached as a panel attached to the display device. In addition to the protective filter, there are a panel having a special function such as a filter for improving design and a touch panel. The present invention can be applied to any of these panels.

  In addition, the fixing member does not need to have a function as a casing. For example, a flat plate-shaped fixing member having a function of only fixing the protective filter and the panel is fixed to the separately formed casing. May be. The internal communication means is not limited to the auxiliary groove and the communication hole. For example, a linear hole may be formed inside the fixing member so as to communicate the narrow space and the internal space.

  When assembling the device, when the protective filter and the fixing member are fixed with double-sided tape, the double-sided tape should be applied to the protective filter first so that the double-sided tape does not block the auxiliary groove formed in the filter insertion part. Is preferred.

  As the double-sided tape, in consideration of disassembly and recycling at the time of failure, one having a high tensile strength and capable of being peeled off without being cut in the middle is preferable. For example, Nitto Denko Corporation NO. It is preferable to use 5000.

(Embodiment 2)
(Constitution)
With reference to FIG. 6 to FIG. 8, a display device according to the second embodiment of the present invention will be described.

  In the display device according to the present embodiment, the liquid crystal unit is disposed inside the fixing member and the main body cabinet, and the protective filter is disposed on the front side of the fixing member. It is the same. The display device in the present embodiment is different in the configuration of the ventilation means formed in the filter insertion portion of the fixing member.

  FIG. 6A and FIG. 6B are explanatory views of the fixing member in the present embodiment. Fig.6 (a) is a top view of the fixing member in this Embodiment, FIG.6 (b) is arrow sectional drawing regarding a VIB-VIB line | wire. As with the fixing member in the first embodiment, the fixing member 12b is formed into a substantially rectangular frame shape on the inside and outside, and a filter insertion portion 30b with a part cut away is formed on the upper surface. . In the ventilation means in the present embodiment, open grooves 3a and 3b for communicating the narrow space and the outside of the display device are formed on the side of the fixing member where the protective filter is fixed. That is, open grooves 3a and 3b are formed instead of the auxiliary grooves and the communication holes in the first embodiment. The open grooves 3a and 3b are formed on the bottom surface of the filter insertion portion 30b.

  In FIG. 6A, the direction indicated by the arrow 52 is the upper side when used, and a plurality of open grooves 3a are formed on the upper and lower sides when the filter insertion portion 30b is used. The open groove 3a is formed so as to widen from the outside to the inside of the fixing member 12b in the planar shape. In addition, many open grooves 3a are formed on the upper side than the lower side in use. Open grooves 3b are formed on the left and right sides when the filter insertion portion 30b is used from the inside to the outside of the fixing member 12b. In the planar shape of the fixing member 12b, the open groove 3b is formed to have a constant width. Further, the open groove 3b on the left side and the open groove 3b on the right side in use are formed so that their positions are symmetrical.

  FIG. 7 shows an enlarged view of a portion C in FIG. The open groove 3b is formed so as to be deeper than the bottom surface of the filter insertion portion 30b. The open groove 3b is formed so as to gradually become shallower from the inside to the outside of the fixing member 12b. The open groove 3b is formed so as to cross the entire bottom surface from one of the bottom surfaces of the filter insertion portion 30b to the other. Although the open groove 3b is shown in FIG. 7, the cross-sectional shape of the open groove 3a is the same.

  Other configurations are the same as those of the display device in Embodiment 1, and thus description thereof will not be repeated here.

(Action / Effect)
Each member is bonded and fixed with a double-sided tape, and a narrow space is formed between the protective filter and the display unit, as in the display device in the first embodiment.

  FIG. 8 shows an enlarged cross-sectional view of a portion where the ventilation means is formed in the display device in the present embodiment. The fixing member 12b and the liquid crystal unit 11 are fixed by the double-sided tape 21 with the gap preventing cushion 22 interposed therebetween, or the end surface of the fixing member 12b and the end surface of the main body cabinet 13 are bonded and fixed to each other. The same as in the first embodiment.

  The protective filter 10 is affixed to the bottom surface of the filter insertion part 30b via the double-sided tape 20. The side surface of the protective filter 10 and the side surface of the filter insertion portion 30b are not bonded and fixed, and a slight gap is formed. The open groove 3b is formed so as to be deeper than the bottom surface of the filter insertion portion 30b. Therefore, the narrow space sandwiched between the liquid crystal unit 11 and the protective filter 10 communicates with the outside of the display device through the gap between the protective filter 10 and the side surface of the filter insertion portion 30b in addition to the open groove 3b. Therefore, the air in the narrow space that has become high temperature due to the heat generated in the display panel is released to the outside of the apparatus as indicated by an arrow 41.

  In this way, by forming an open groove for communicating the narrow space with the outside of the display device, the heat of the narrow space can be released to the outside, and the temperature between the narrow space and the external environment can be released. The difference can be reduced. As a result, it is possible to prevent condensation on the protective filter. Further, by forming the open groove on the side of the fixing member on which the panel is fixed, the ventilation means can be easily formed.

  As shown in FIG. 6A, more open grooves in the present embodiment are formed on the upper side when the display device is used than on the other side. By adopting this configuration, as in the first embodiment, high-temperature air gathered by convection on the upper side of the narrow space can be efficiently discharged to the outside of the narrow space. The heat dissipating ability is improved.

  As shown in FIG. 8, one surface of the double-sided tape 20 is exposed on the upper surface of the open groove 3b. As described above, by arranging the non-curable adhesive member on the side wall of the ventilation means, it is possible to adhere foreign matter such as dust to enter the inside of the display device to the adhesive member, thereby preventing the intrusion. . In the present embodiment, the double-sided tape for bonding and fixing the fixing member and the protective filter is used as it is as the bonding member, but the present invention is not limited to this form. An adhesive may be applied.

  Further, as shown in FIG. 6A, the open groove 3a formed in the vertical direction of the display device is formed so that its width gradually increases from the outside toward the inside. Further, as shown in FIG. 7, the cross section of the open groove is formed so that the depth gradually increases from the outside to the inside of the fixing member 12 b. That is, the open grooves 3a and 3b are formed so that the passage of the ventilation means gradually widens from the outside to the inside of the fixing member 12b. By adopting this configuration, it is possible to reduce the entrance portion of the open groove from the outside of the apparatus, and it is possible to suppress foreign matters such as dust from entering the inside of the apparatus. Furthermore, the open grooves 3a and 3b can increase the area where foreign matters such as dust adhere to the adhesive member. Accordingly, the effect of suppressing foreign matters such as dust from entering the inside of the apparatus through the open groove is improved.

  Since other operations and effects are the same as those of the display device in the first embodiment, description thereof will not be repeated here.

(Embodiment 3)
(Constitution)
With reference to FIG. 9A to FIG. 11, a display device according to Embodiment 3 of the present invention will be described.

  In the display device according to the present embodiment, the liquid crystal unit is disposed inside the fixing member and the main body cabinet, and the protective filter is disposed on the front side of the fixing member. It is the same. The display device in the present embodiment is different in the configuration of the ventilation means formed in the filter insertion portion of the fixing member.

  9 (a) and 9 (b) are explanatory views of the fixing member in the present embodiment, FIG. 9 (a) is a plan view, and FIG. 9 (b) is IXB- in FIG. 9 (a). It is arrow sectional drawing regarding the IXB line. As with the fixing member in the first embodiment, the fixing member 12c is formed in a substantially rectangular frame shape on the inside and outside, and a filter insertion portion 30c with a part cut away is formed on the upper surface. . The ventilation means in the present embodiment has a through hole 4 in addition to the auxiliary groove 1 and the communication hole 2 on the bottom surface of the filter insertion portion 30c. The through hole 4 is formed to be paired with the auxiliary groove 1 and the communication hole 2. The through hole 4 is formed so as to contact the outer edge of the bottom surface of the filter insertion portion 30c.

  FIG. 10 shows an enlarged view of a portion D in FIG. The auxiliary groove 1 is formed on the bottom surface of the filter insertion portion 30c from the inside to the outside of the fixing member 12c, and the communication hole 2 is formed so as to be connected to the end of the auxiliary groove 1 in the embodiment. Same as 1. The fixing member in the present embodiment has a through hole 4 for communicating the internal space of the display device with the outside of the display device. The through hole 4 is formed so as to penetrate the fixing member 12c from the bottom surface of the filter insertion portion 30c toward the inside of the display device. The through hole 4 is formed outside the communication hole 2.

  Since other configurations are the same as those of the display device in the first embodiment, description thereof will not be repeated here.

(Action / Effect)
Each member is bonded and fixed with a double-sided tape, and a narrow space is formed between the protective filter and the display unit, as in the display device in the first embodiment.

  FIG. 11 shows an enlarged cross-sectional view of a portion where the ventilation means is formed in the display device in the present embodiment. The fixing member 12c and the liquid crystal unit 11 are fixed by the double-sided tape 21 with the gap preventing cushion 22 interposed therebetween, or the end surface of the fixing member 12c and the end surface of the main body cabinet 13 are bonded and fixed to each other, so that the internal space is The formation is the same as in the first embodiment.

  The protective filter 10 is affixed to the bottom surface of the filter insertion part 30c via the double-sided tape 20. In the display device according to the present embodiment, as a ventilation means, in addition to the internal communication means for communicating the narrow space and the internal space inside the display device, the through hole 4 for communicating the internal space and the outside of the device. Have By adopting this configuration, high-temperature air in the gap space can be diffused into the internal space, and an increase in the temperature of the narrow space can be suppressed. Furthermore, the air in the internal space of the apparatus can be discharged to the outside, and the internal space can be efficiently cooled. That is, as indicated by the arrow 42, the high-temperature air in the narrow space can be discharged to the outside through the internal communication means and the through hole 4. Accordingly, the narrow space can be cooled more efficiently. As a result, it is possible to suppress an increase in the temperature of the narrow space, and it is possible to prevent condensation from forming on the protective filter.

  In addition, as shown by an arrow 42 in FIG. 11, the distance from the outside of the display device to the narrow space becomes long, and there is an effect of suppressing foreign matters such as dust from entering the narrow space from the outside of the display device. Increase. The display device in this embodiment is particularly useful when the amount of heat generated from the components arranged in the internal space is large because the internal space communicates with the outside of the display device.

  Since other operations and effects are the same as those of the display device in the first embodiment, description thereof will not be repeated here.

(Embodiment 4)
(Constitution)
With reference to FIGS. 12A to 15, a display device according to Embodiment 4 of the present invention will be described.

  In the display device according to the present embodiment, the liquid crystal unit is disposed inside the fixing member and the main body cabinet, and the protective filter is disposed on the front side of the fixing member. It is the same. The display device in the present embodiment is different in the configuration of the ventilation means formed in the filter insertion portion of the fixing member.

  FIG. 12A and FIG. 12B are explanatory views of the fixing member in the present embodiment. Fig.12 (a) is a top view of the fixing member in this Embodiment, FIG.12 (b) is arrow sectional drawing regarding the XIIB-XIIB line | wire in Fig.12 (a). Similarly to the fixing member in the first embodiment, the fixing member 12d is formed into a substantially rectangular frame shape on the inner side and the outer side, and a filter insertion portion 30d with a part cut away is formed on the upper surface. . In the bottom surface of the filter insertion portion 30d of the fixing member 12d in the present embodiment, a recessed portion 6 as a ventilation means and a communication hole 5 are provided at each corner.

  As shown in FIG. 12A, the recess 6 is formed at a position corresponding to the four corners of the rectangular rectangle in the bottom surface of the filter insertion portion 30d. The depression 6 is formed so as to cross the width direction of the bottom surface of the filter insertion portion 30d. One communication hole 5 is formed on the bottom surface of one recess 6. The communication hole 5 is formed in a columnar shape.

  FIG. 13 shows an enlarged view of a portion E in FIG. The recess 6 is formed so as to be deeper than the bottom surface of the filter insertion portion 30d, and the communication hole 5 is formed in the recess 6 at a position outside the fixing member 12d so as to penetrate the fixing member 12d. Has been. The depression 6 is formed with a stepped portion so that the side connected to the communication hole 5 is shallow and the side that is the inner side of the fixing member 12d is deep.

  Other configurations are the same as those of the display device in Embodiment 1, and thus description thereof will not be repeated here.

(Action / Effect)
Each member is bonded and fixed with a double-sided tape, and a narrow space is formed between the protective filter and the display unit, as in the display device in the first embodiment.

  FIG. 14 is a diagram for explaining a region where a double-sided tape is attached to the filter insertion portion 30d of the fixing member 12d in the present embodiment. The double-sided tape is affixed to the bottom surface of the filter insertion portion 30d. The tape affixing area 60 indicates an area where a double-sided tape is affixed. The double-sided tape is affixed so as to cover most of the bottom surface of the filter insertion portion 30d. The double-sided tapes are affixed to each other without any gap, but by forming the recess 6, an opening 14 is formed in which the recess 6 communicates with the inside of the fixing member 12 d.

  FIG. 15 shows an enlarged cross-sectional view of a portion of the display device in which the recessed portion and the communication hole are formed. The fixing member 12d and the protective filter 10 are bonded and fixed by the double-sided tape 20, and the fixing member 12d and the liquid crystal unit 11 are bonded and fixed by the double-sided tape 21 via the gap prevention cushion 22 in the embodiment. This is the same as the display device in Embodiment 1. In the present embodiment, a recess 6 and a communication hole 5 are formed as ventilation means. By forming the recess 6, a gap is formed between the bottom surface of the recess 6 and the double-sided tape 20. In addition, a gap is formed between the side surface of the protective filter 10 and the side surface of the filter insertion portion 30d. By forming the recess 6 so as to cross the width direction of the bottom surface of the filter insertion portion 30d, the narrow space and the outside of the display device can be communicated with each other through the recess 6. Therefore, as indicated by the arrow 43, the high-temperature air in the narrow space can be released to the outside of the display device. As a result, it is possible to suppress an increase in the temperature of the narrow space, and it is possible to prevent dew condensation on the protective filter 10.

  Further, by forming the communication hole 5, the internal space of the display device, the narrow space and the outside of the display device can be communicated, and the temperature of the narrow space can be further suppressed from increasing. The side where the hollow portion 6 is connected to the communication hole 5 is shallow and the inner side of the fixing member 12d is formed deeper, so that the cross section of the passage connecting the communication hole 5 and the narrow space is small. Therefore, foreign matter such as dust can be prevented from entering the narrow space.

  Moreover, as shown in FIG. 14, the rectangular double-sided tape affixed on the filter insertion part 30d uses four rectangular things. A recess is formed at a position that is an end of each double-sided tape. In the portion where the recess is formed, the double-sided tape is bonded only to the protective filter and not to the fixing member 12d. When the protective filter is peeled off from the portion where the recess 6 is formed in recycling or the like, the double-sided tape is bonded to the protective filter, and the two members are separated without remaining on the fixing member. Can do. The recess is formed on such a recyclable member and has an effect of preventing the double-sided tape from remaining.

  Since other operations and effects are the same as those of the display device in the first embodiment, description thereof will not be repeated here.

  In addition, the said embodiment disclosed this time is an illustration in all the points, Comprising: It is not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and includes all modifications within the scope and meaning equivalent to the terms of the claims.

4 is an exploded view of the display device in Embodiment 1. FIG. (A) is a top view of the display apparatus in Embodiment 1, (b) is sectional drawing. It is an expanded sectional view of the part in which the ventilation | gas_flowing means is formed among the display apparatuses in Embodiment 1. FIG. (A) is a top view of the fixing member in Embodiment 1, (b) is sectional drawing. It is an expanded sectional view of the part in which ventilation means is formed among the fixing members in Embodiment 1. (A) is a top view of the fixing member in Embodiment 2, (b) is sectional drawing of the fixing member in Embodiment 2. FIG. It is an expanded sectional view of the part in which the ventilation means is formed among the fixing members in Embodiment 2. It is an expanded sectional view of the part in which the ventilation | gas_flowing means is formed among the display apparatuses in Embodiment 2. FIG. (A) is a top view of the fixing member in Embodiment 3, (b) is sectional drawing. It is an expanded sectional view of the part in which the ventilation means is formed among the fixing members in Embodiment 3. It is an expanded sectional view of the part in which the ventilation means is formed among the display apparatuses in Embodiment 3. (A) is a top view of the fixing member in Embodiment 4, (b) is sectional drawing. It is an expanded sectional view of the part in which the ventilation means is formed among the fixing members in Embodiment 4. It is a figure explaining the area | region which affixes a double-sided tape on the fixing member in Embodiment 4. FIG. It is an expanded sectional view of the part in which the ventilation means is formed among the display apparatuses in Embodiment 4. It is an exploded view of the display apparatus based on the prior art. (A) is a top view of the display apparatus based on a prior art, (b) is an exploded view. It is an expanded sectional view of the part which has bonded and fixed the protection filter, the fixing member, and the liquid crystal unit among the display apparatuses based on the prior art.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Auxiliary groove, 2, 5 Communication hole, 3a, 3b Open groove, 4 Through hole, 6 Indentation part, 10 Protection filter, 11 Liquid crystal unit, 12a, 12b, 12c, 12d, 15 Fixing member, 13 Main body cabinet, 14 Opening Part, 20, 21 double-sided tape, 22 gap prevention cushion, 30a, 30b, 30c, 30d, 31 filter insertion part, 40, 41, 42, 43, 44, 50, 51, 52 arrow, 60 tape pasting area, 61 opaque region.

Claims (8)

A display unit having a main surface;
A panel fixed to the display unit so as to be parallel to the main surface via a fixing member;
A narrow space surrounded by the main surface, the panel and the fixing member;
A display device comprising a ventilation means for allowing air to flow between the narrow space and the outside of the narrow space.   The display device according to claim 1, wherein the ventilation unit includes an open groove for communicating the narrow space and the outside of the display device on a side of the fixing member where the panel is fixed. A main body cabinet bonded and fixed to the fixing member,
The display unit is disposed in an internal space surrounded by the fixing member and the main body cabinet,
The display device according to claim 1, wherein the ventilation unit includes an internal communication unit for communicating the narrow space and the internal space. The internal communication means includes an auxiliary groove formed on a side of the fixing member to which the panel is fixed;
The display device according to claim 3, further comprising a communication hole that communicates the auxiliary groove with the internal space.   The display device according to claim 4, wherein the fixing member includes a through hole for communicating the internal space with the outside of the display device.   The display device according to claim 1, wherein the ventilation unit includes a side wall on which a non-curable adhesive member is disposed. The ventilation means is formed on the fixing member,
The display device according to claim 1, wherein more of the display devices are formed on an upper side in use than on the other side.   The display device according to claim 1, wherein the display unit is a liquid crystal display unit.

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