JP5482593B2 - Electronic component storage case and display device - Google Patents

Description

  The present invention relates to an electronic component housing case and a display device.

  For example, a case for housing an electronic component such as a display panel is desired to have a static electricity shielding function for shielding static electricity from the outside in order to prevent malfunction and destruction of the electronic component due to static electricity.

  As a case having an electrostatic shielding function, as described in Patent Document 1, a resin frame in which a component housing space is formed, and a metal that is fitted to the frame from one surface side. The first case member, and a metal second case member fitted from the other surface side of the frame with respect to the frame and the first case member.

  In this case, a protruding contact is formed on one case member, and the first case member and the second case member are electrically connected to each other by bringing the contact into contact with the other case member. Has an electrostatic shield function.

JP 2007-199106 A

  However, in the above conventional case, the contact formed on one case member contacts the other case member with sufficient contact pressure due to the relative dimensional error between the first case member and the second case member. There are things that do not. Therefore, the conventional case has variations in the electrostatic shielding effect.

  In addition, since the conventional case is such that the contact is brought into contact with the other case member by the elasticity of one case member, the contact pressure of the contact is weakened due to repeated vibrations, etc., and the electrostatic shielding effect is reduced accordingly. To do.

  An object of the present invention is to provide an electronic component housing case and a display device that can obtain a stable electrostatic shielding effect without variations and can maintain the electrostatic shielding effect for a long period of time.

The invention according to claim 1 is a case for accommodating an electronic component,
A resin frame having a predetermined height, in which a component housing space is formed in an area inside the peripheral edge, and the component housing space is opened on two main surfaces at both ends in the height direction. When,
The first main surface portion that abuts on one main surface of the frame, and a first side surface portion that is bent in the direction of the frame from each side of the first main surface portion. From the main surface side of the metal, the first case member made of metal that is fitted on the outer side surface of the frame with the first side surface portion,
The frame and the first case member include a second main surface portion that contacts the other main surface of the frame, and a second side surface portion bent in the direction of the frame from each side of the second main surface portion. On the other hand, from the other main surface side of the frame, a second case member made of metal that is fitted and fitted on the outer side of the first side surface portion of the first case member,
With
The two sides along the height direction of the first side surface portion are separated from the first side surface portion at a predetermined position of the first side surface portion of the first case member, and the base portion connected to the first main surface portion A contact piece that is elastically deformed so as to be inclined with respect to the first side surface portion toward the tip on the opposite side is formed,
The outer surface of the frame abuts on the contact piece from the frame side, and the contact piece is inclined in the outer surface direction of the first side surface portion when the first case member is fitted to the frame. A contact piece extruding protrusion is formed which is elastically deformed to contact the second side surface portion of the second case member.

  According to a second aspect of the present invention, in the electronic component housing case according to the first aspect, the contact piece push-out projection has a surface that abuts on the contact piece with respect to the outer surface of the frame. It is formed in the wedge shape which inclined so that it might protrude diagonally toward the said other main surface side from the surface side.

  According to a third aspect of the present invention, in the electronic component housing case according to the second aspect, the contact piece causes the first main surface portion of the first case member to abut against the one main surface of the frame. When the contact piece is formed, the tip end portion of the contact piece is formed so as to pass through the contact piece pushing projection.

According to a fourth aspect of the present invention, in the electronic component housing case according to the third aspect, the outer side surface of the frame is a portion on the one main surface side from a predetermined position in the height direction, and the other side Is formed in a shape retreated in the inner direction of the frame with respect to the main surface side portion, and the contact piece extrusion protrusion is formed on the retreated surface,
The first side surface portion of the first case member is formed at a height lower than the height of the receding surface, and an inner surface of the first side surface portion is close to or in contact with the receding surface,
The second side surface portion of the second case member has a height at which the end portion covers the outside of the first side surface portion of the first case member, and the inner surface of the second side surface portion is the outer surface of the first side surface portion. It is formed so that it may adjoin or contact with.

  According to a fifth aspect of the present invention, in the electronic component housing case according to the fourth aspect, the receding surface of the outer surface of the frame and the non-retreating surface on the other main surface side of the receding surface are The second case is formed in a plane perpendicular to the two main surfaces of the frame, and the first side surface portion of the first case member is bent in a direction perpendicular to the first main surface portion. The second side surface portion of the member is bent in a direction perpendicular to the second main surface portion.

According to a sixth aspect of the present invention, in the electronic component housing case according to the fifth aspect, the receding surface of the outer surface of the frame is a first side surface portion of the first case member with respect to the non-retracting surface. It is formed by retreating with a width greater than the plate thickness of
The first case member is fitted to the frame so that the first side surface portion is within a receding width of the receding surface with respect to the non-receding surface,
With respect to the frame and the first case member, the second case member has an inner surface of the second side surface portion on the non-retracted surface of the frame and an outer surface of the first side surface portion of the first case member. It is fitted so that it may adjoin or contact.

  According to a seventh aspect of the present invention, in the electronic component housing case according to the sixth aspect, an interval corresponding to the width of the contact piece is provided at a predetermined position of the first side surface portion of the first case member. Two cuts extending in the height direction of the first side surface portion are provided, and the contact piece is formed by a portion between the two cuts of the first side surface portion.

  According to an eighth aspect of the present invention, in the electronic component housing case according to any one of the first to seventh aspects, the electronic component housed in the component housing space of the frame is a display panel, and the first case member A display window corresponding to the screen area of the display panel is provided on one of the first main surface portion and the second main surface portion of the second case member.

The invention according to claim 9 is a display device in which a display panel is accommodated in a case.
The case is
A resin frame having a predetermined height, in which a component housing space is formed in an area inside the peripheral edge, and the component housing space is opened on two main surfaces at both ends in the height direction. When,
A metal first case member comprising a first main surface portion that abuts on one main surface of the frame, and a first side surface portion bent in the direction of the frame from each side of the first main surface portion;
A metal second case member comprising a second main surface portion contacting the other main surface of the frame and a second side surface portion bent in the direction of the frame from each side of the second main surface portion;
With
Either one of the first main surface portion of the first case member and the second main surface portion of the second case member is provided with a display window corresponding to the screen area of the display panel,
The two sides along the height direction of the first side surface portion are separated from the first side surface portion at a predetermined position of the first side surface portion of the first case member, and the base portion connected to the first main surface portion A contact piece that is elastically deformed so as to be inclined with respect to the first side surface portion toward the tip on the opposite side is formed,
A contact piece extrusion protrusion is formed on the outer surface of the frame so as to contact the contact piece from the frame side and elastically deform the contact piece so as to incline toward the outer surface direction of the first side surface portion.
The display panel is disposed in the component housing space of the frame,
The first case member is fitted to the frame from the one main surface side of the frame, covering the first side surface portion on the outer surface of the frame,
The second case member covers the outer side of the first side surface portion of the first case member from the other main surface side of the frame with respect to the frame and the first case member. And fitted,
The contact piece is elastically deformed by a contact piece pushing projection and is brought into contact with the inner surface of the second side surface portion of the second case member, and the first case member and the second case member are electrically connected by the contact piece. It is characterized by being.

  According to a tenth aspect of the present invention, in the display device according to the ninth aspect, the display panel is a liquid crystal display panel, and the liquid crystal display panel and the liquid crystal display panel are disposed in a component housing space of the frame. And a surface light source for irradiating light.

  According to the present invention, it is possible to obtain a stable electrostatic shielding effect without variations, and to maintain the electrostatic shielding effect for a long period of time.

The perspective view of the display apparatus which shows one Example of this invention. The disassembled perspective view of the said display apparatus. FIG. 3 is an enlarged perspective view of a part of a frame constituting the case of the display device. The expanded perspective view of a part of 1st case member which comprises the case of the said display apparatus. Sectional drawing along the VV arrow line of FIG. 1 of the said display apparatus. Sectional drawing along the VI-VI arrow line of FIG. 1 of the said display apparatus. Sectional drawing along the VII-VII arrow line of FIG. 1 of the said display apparatus. FIG. 3 is a partial cross-sectional view of the display device in the middle of manufacturing. The perspective view of a part of said 1st case member which shows the other Example of this invention. Sectional drawing of a part of display apparatus of the said other Example.

[Example]
1 to 8 show a display device according to an embodiment of the present invention. The display device includes a liquid crystal display panel 1 that displays an image by controlling light transmission, and a surface light source 10 that is disposed behind the liquid crystal display panel 1 and that emits illumination light toward the liquid crystal display panel 1. Is housed in a case 30 having an electrostatic shielding function.

  The liquid crystal display panel 1 has a rectangular planar shape, and as shown in FIGS. 2 and 5 to 7, is a frame-shaped sealing material that is disposed to face each other with a predetermined gap therebetween and surrounds the screen area 1a. A transparent first substrate 2 and a second substrate 3 bonded via 4, a liquid crystal layer 5 sealed in a region surrounded by the sealing material 4 in a gap between the substrates 2 and 3, and each substrate It consists of first and second polarizing plates 6 and 7 disposed on the outer surfaces of 2 and 3, respectively.

  The liquid crystal display panel 1 is an active matrix liquid crystal display panel having TFTs (thin film transistors) as active elements, for example. Although not shown in the drawing, the TFT is formed on the inner surface of the first substrate 2 facing the second substrate 3. A plurality of connected transparent pixel electrodes are arranged in a row direction and a column direction, a plurality of scanning signal lines for supplying a scanning signal for turning on / off the TFT to each TFT, and a TFT in each column There are provided a plurality of data signal lines for supplying data signals.

  In addition, on the inner surface of the second substrate 3 facing the first substrate 2, three color filters of red, green, and blue are formed so as to correspond to the respective pixel electrodes, and each pixel electrode is formed thereon. Is formed as a single film-like transparent common electrode.

  Further, a first alignment film is formed on the inner surface of the first substrate 2 so as to cover each pixel electrode, and a second alignment film is formed on the inner surface of the second substrate 3 so as to cover the common electrode. The liquid crystal molecules of the layer 5 are aligned in a predetermined alignment state defined by each alignment film.

  The liquid crystal display panel 1 may be any liquid crystal display panel of TN type, STN type, vertical alignment type, non-twisted homogeneous alignment type, bend alignment type, etc., and may be a ferroelectric or antiferroelectric liquid crystal. A display panel may be used. Further, the liquid crystal display panel 1 is not limited to one that changes the alignment state of the liquid crystal molecules by applying a voltage between the electrode formed on the first substrate 2 and the electrode formed on the second substrate 3, but one substrate For example, a first electrode and a second electrode having a plurality of elongated electrode portions are formed on the inner surface of the first substrate 2 so as to be insulated from each other, and a transverse electric field (electric field in a direction along the substrate surface) is formed between these electrodes. It may be a lateral electric field control type liquid crystal display panel in which the orientation state of liquid crystal molecules is changed by generating.

  Further, the first substrate 2 has a driver mounting portion 2a that protrudes outward from the second substrate 3 at one edge of the first substrate 2, and a scanning signal is sent to each scanning signal line in the driver mounting portion 2a. A driver element 8 for applying and applying a data signal to each data signal line is mounted. Furthermore, one end of a wiring film 9 that supplies an image signal, a control signal, and the like output from a control circuit (not shown) to the driver element 8 is connected to the edge portion of the driver mounting portion 2a.

  On the other hand, the surface light source 10 is formed with an incident surface 12 on which light is incident on an end surface of one side of the transparent plate, and an output surface 13 of light incident from the incident surface 12 is formed on one of the two plate surfaces. The light guide plate 11 is formed with a reflection surface 14 that reflects the light incident from the incident surface 12 toward the output surface 13 on the plate surface, and a plurality of light emitting elements disposed to face the incident surface 12 of the light guide plate 11. An element 17 is included. The light guide plate 11 is formed of a rectangular transparent plate having an area facing the entire screen area 1a of the liquid crystal display panel 1, and the incident surface 12 includes two orthogonal surfaces with respect to the longitudinal direction of the transparent plate. It is formed on one of the end faces.

  The light guide plate 11 emits the light incident from the incident surface 12 from the entire area of the output surface 13, and the light incident from the incident surface 12 is internally reflected by the output surface 13 and the reflective surface 14 while being guided by the light guide plate 11. The inside is guided in the longitudinal direction. Then, light incident on the emission surface 13 at an incident angle whose inclination with respect to the normal direction of the emission surface 13 is smaller than the total reflection angle is emitted from the emission surface 13.

  The light that has entered the light guide plate 11 from the incident surface 12 is also emitted from the reflective surface 14. Therefore, a reflecting plate 15 for reflecting the leaked light emitted from the reflecting surface 14 and returning it to the inside of the light guiding plate 11 is disposed on the reflecting surface 14 side of the light guide plate 11. The reflection plate 15 is attached to the reflection surface 14 of the light guide plate 11 with a double-sided adhesive tape 16 at the periphery.

  The light-emitting element 17 is a solid light-emitting element composed of, for example, an LED (light-emitting diode), and includes a red LED, a green LED, and a blue LED, and emits light of three colors of red, green, and blue emitted by these LEDs. White light that is additive color mixing light is emitted.

  The light emitting element 17 is disposed on a wiring substrate 18 on which connection wiring for the light emitting element 17 is formed. Then, the wiring board 18 has the emission surface of the light emitting element 17 opposed to the incident surface 12 of the light guide plate 11, and the side edge of the wiring substrate 18 is the end of the light emission plate 13 on the incident surface 12 side. It is arranged in a stacked manner and is affixed to the light guide plate 11 by a double-sided adhesive tape 19. One end of a lead wiring film 20 that connects the wiring board 18 to a light source lighting circuit (not shown) is connected to the side edge of the wiring board 18 opposite to the side where the wiring board 18 is attached to the light guide plate 11.

  Further, a diffusion film 21 for diffusing light emitted from the emission surface 13 of the light guide plate 11 is disposed on the emission surface 13 of the light guide plate 11, and two prism sheets 22 and 23 are laminated thereon. Has been placed.

  The diffusion film 21 and the prism sheets 22 and 23 are formed in a shape that is larger than the screen area 1 a of the liquid crystal display panel 1 and smaller than the outer shape of the light guide plate 11. It is affixed in order on the excluded area.

  In the figure, the prism sheets 22 and 23 are simplified, but the first prism sheet 22 on the diffusion film 21 side has, for example, a width direction of the light guide plate 11 (a direction orthogonal to the longitudinal direction of the light guide plate 11). A plurality of elongate prisms along the longitudinal direction of the light guide plate 11, for example, are arranged on the second prism sheet 23 on the first prism sheet 22 at a dense pitch. It is formed with.

  That is, the surface light source 10 emits light emitted from a plurality of light emitting elements 17, guided by the light guide plate 11 and emitted from the entire area of the emission surface 13 by the diffusion film 21, and further, two prism sheets 22. , 23 is refracted in a direction in which the angle with respect to the normal direction of the exit surface 13 of the light guide plate 11 becomes smaller, and the intensity distribution light is high in the front direction (direction near the normal direction of the exit surface 13). Is emitted.

  The liquid crystal display panel 1 uses, for example, the outer surface of the second polarizing plate 7 disposed on the outer surface of the second substrate 3 as a display surface, and the surface light source 10 is behind the liquid crystal display panel 1 (display surface). The outer surface of the second prism sheet 23 is disposed on the opposite side of the liquid crystal display panel 1.

  Next, the case 30 that houses the liquid crystal display panel 1 and the surface light source 10 will be described. As shown in FIGS. 1 to 7, the case 30 includes a resin frame 31, a metal first case member 38, and a metal second case member 43.

  The frame 31 has a predetermined height that can accommodate the liquid crystal display panel 1 and the surface light source 10 disposed behind the liquid crystal display panel 1, and is formed of a resin molded product in which a component accommodating space is formed in an area inside the peripheral edge. ing. The component housing space is opened in two main surfaces 32 and 33 at both ends in the height direction of the frame 31. Hereinafter, of the two main surfaces 32 and 33, the main surface 32 on the side where the liquid crystal display panel 1 is accommodated is referred to as an upper main surface, and the main surface 33 on the side where the surface light source 10 is accommodated is referred to as a lower main surface. say.

  The frame 31 accommodates the liquid crystal display panel 1 in a portion on the upper main surface 32 side of the component housing space, and accommodates the surface light source 10 in a portion on the lower main surface 33 side. On the inner side surface, a bowl-shaped partition portion 34 that divides the component housing space into a display panel housing portion and a surface light source housing portion is integrally projected over the entire circumference of the frame 31.

  The upper main surface 32 and the lower main surface 33 of the frame 31 are formed in parallel to each other, and the upper surface (surface on the display panel housing portion side) and the lower surface (surface on the surface light source housing portion side) of the partition portion 34. Is formed in a plane parallel to the upper main surface 32 and the lower main surface 33.

  The display panel housing portion closer to the upper main surface 32 than the partition portion 34 of the frame 31 has a slightly larger planar shape than the planar shape of the liquid crystal display panel 1, and extends from the upper surface of the partition portion 34 to the upper main surface 32. The height is the same as the thickness of the liquid crystal display panel 1 or slightly larger than the liquid crystal display panel 1.

  Further, the surface light source accommodating portion on the lower main surface 33 side of the partition portion 34 has a slightly larger planar shape than the planar shape including the wiring substrate 18 of the surface light source 10, and the lower main surface 33 to the lower surface of the partition portion 34. Is formed in a shape slightly larger than the thickness of the surface light source 10 (thickness from the outer surface of the reflecting plate 15 to the outer surface of the second prism sheet 23).

  Furthermore, the partition part 34 is a part along the other side (the other short side and the two long sides) of the part along one of the two short sides of each side of the frame 31 having the rectangular frame shape. It is formed to be wider than that.

  A portion of the partition portion 34 along one short side of the frame 31 (hereinafter referred to as a wide portion) has a protrusion width from the inner surface of the display panel housing portion of the frame 31 so that the driver of the liquid crystal display panel 1 is used. The width is larger than the width of the mounting portion 2a and smaller than the width of the portion between the edge of the driver mounting portion 2a and the screen area 1a.

  In addition, the narrow portion along the other side of the partition part 34, that is, the other side of the frame 31, has a protruding width from the inner surface of the display panel housing part of the frame 31, and the driver mounting part of the liquid crystal display panel 1. It is formed in a shape smaller than the width of the portion between each side other than 2a and the screen area 1a. That is, the partition part 34 is formed in a shape corresponding to a part outside the screen area 1 a of the liquid crystal display panel 1.

  The liquid crystal display panel 1 directs the display surface of the liquid crystal display panel 1 (the outer surface of the second polarizing plate 7) toward the upper main surface 32 side of the frame 31 in the display panel housing portion of the frame 31. Of these sides, the side on which the driver mounting portion 2 a is formed is placed on the upper surface of the wide portion of the partition portion 34, and the other sides are placed on the upper surface of the narrow portion of the partition portion 34. The double-sided pressure-sensitive adhesive sheet 50 having a rectangular frame shape corresponding to the shape of the upper surface is attached to the upper surface of the partition portion 34 and supported by the frame 31.

  Further, the surface light source 10 faces the surface light source housing portion of the frame 31 with the surface on which the second prism sheet 23 is disposed facing the display panel housing portion, and is opposite to the surface on which the light emitting element 17 of the wiring board 18 is provided. The surface is overlapped with the lower surface of the wide portion of the partition portion 34, and the wiring substrate 18 is pasted out of each side of the light exit surface 13 of the light guide plate 11 (the portion outside the diffusion film 21 and the prism sheets 22 and 23). The three sides excluding the sides are arranged so as to overlap the lower surface of the narrow portion of the partition portion 34, and are attached to the lower surface of the partition portion 34 by a double-sided adhesive sheet 51 having a rectangular frame shape corresponding to the shape of the lower surface of the partition portion 34. 31 is supported.

  Note that the lower surface of the wide portion of the partition portion 34 is formed to be recessed upward by the thickness of the wiring substrate 18 with respect to the lower surface of the narrow portion. The panel 1 is supported by the frame 31 so that the light irradiation surface (the outer surface of the second prism sheet 23) is parallel to the liquid crystal display panel 1.

  In addition, the outer side surface of each side of the frame 31 is a portion on one main surface side of the two main surfaces 32 and 33 from a predetermined position in the height direction thereof, for example, the same position as the lower surface of the partition portion 34. Is formed in a shape that is retreated in the inner direction of the frame 31 with a predetermined width with respect to the other main surface side portion. In this embodiment, the lower main surface 33 side portion of the outer surface of each side of the frame 31 is retreated with respect to the upper main surface 32 side portion. The receding surface 31 a and the non-retreating surface 31 b closer to the upper main surface 32 than the receding surface 31 a are formed in a plane perpendicular to the upper main surface 32 and the lower main surface 33 of the frame 31.

  Further, the side along the wide part of the partition part 34 of the frame 31 is connected to the lead part 35 of the wiring film 9 connected to the driver mounting part 2 a of the liquid crystal display panel 1 and the wiring substrate 18 of the surface light source 10. A lead portion 36 for the lead wiring film 20 is provided. The lead portion 35 of the wiring film 9 is formed by notching the upper main surface 32 of the frame 31 to a width and depth that are somewhat larger than the width and thickness of the wiring film 9. In addition, the lead-out portion 36 of the lead wiring film 20 has a width on the lower main surface 33 side of the frame 31 that is somewhat larger than the width of the lead wiring film 20 over the entire length of the receding surface 31a in the height direction. Notched and formed.

  On the other hand, each of the first case member 38 and the second case member 43 is a pressed product of a metal plate having good conductivity such as aluminum, and the first case member 38 is one main surface of the frame 31. (In this embodiment, the lower main surface) includes a first main surface portion 39 that comes into contact with 33 and a first side surface portion 40 that is bent in the direction of the frame 31 from each side of the first main surface portion 39. The first case member 38 is fitted to the frame 31 so that the first side surface portion 40 covers the outer surface of the frame 31 from the lower main surface 33 side.

  The second case member 43 includes a second main surface portion 44 that contacts the other main surface (upper main surface in this embodiment) 32 of the frame 31, and the direction of the frame 31 from each side of the second main surface portion 44. And a second side surface portion 45 that is bent. The second case member 43 covers the frame 31 and the first case member 38 with the second side surface 45 on the outer side of the first side surface 40 of the first case member 38 from the upper main surface 32 side of the frame 31. Fitted.

  The first main surface portion 39 of the first case member 38 is formed in a rectangular shape that is the same as or slightly larger than the outer shape of the lower main surface 33 of the frame 31. The second main surface portion 44 of the second case member 43 is formed in a rectangular shape that is the same as or slightly larger than the outer shape of the upper main surface 32 of the frame 31. A display window 46 corresponding to the screen area 1 a of the liquid crystal display panel 1 is provided on the second main surface portion 44 of the second case member 43. The display window 46 includes a rectangular opening formed in the second main surface portion 44.

  The first side surface portion 40 of the first case member 38 is bent in a direction perpendicular to the first main surface portion 39, and the second side surface portion 45 of the second case member 43 is bent with respect to the second main surface portion 44. Bent at right angles.

  Furthermore, the receding surface 31a on the outer side surface of the frame 31 is formed to recede with a width equal to or greater than the thickness of the first side surface portion 40 of the first case member 38 with respect to the non-receding surface 31b. The receding width of the receding surface 31a with respect to the non-receding surface 31b is desirably as close to the plate thickness of the first side surface portion 40 of the first case member 38 as possible.

  The first side surface portion 40 of the first case member 38 has a height lower than the height of the receding surface 31a of the outer surface of the frame 31, and the inner surface of the first side surface portion 40 is the receding surface 31a. It is formed so as to be close or in contact with each other.

  Therefore, the first case member 38 is arranged such that the first side surface portion 40 is within the retreat width of the retreat surface 31a with respect to the non-retreat surface 31b with respect to the frame 31, that is, the non-retreat surface 31b is the lower main surface 33. It fits so that it may fit in the space between the virtual surface extended in this direction, and the receding surface 31a.

  Further, the second side surface portion 45 of the second case member 43 has a height at which the end portion covers the outside of the first side surface portion 40 of the first case member 38 fitted to the frame 31, and the second side surface portion 45. The inner surface of the portion 45 is formed so as to be close to or in contact with the outer surface of the first side surface portion 40 of the first case member 38.

  Therefore, in the second case member 43, the second side surface portion 45 has a non-retreating surface 31 b of the frame 31 and the outer surface of the first side surface portion 40 of the first case member 38 with respect to the frame 31 and the first case member 38. It is fitted so as to be close to or in contact with.

  Further, the second side surface portion 45 of the second case member 43 corresponds to the wiring film 9 provided on the side along the wide portion of the partition portion 34 of the frame 31 and the lead portions 35 and 36 of the lead wiring film 20. A slit-shaped opening 47 is formed.

  That is, the wiring film 9 connected to the driver mounting portion 2 a of the liquid crystal display panel 1 passes through the wiring film lead-out portion 35 formed in the frame 31 and the slit-shaped opening 47 formed in the second case member 43. Pulled out. Further, the lead wiring film 20 connected to the wiring substrate 18 of the surface light source 10 passes through the lead wiring film lead-out portion 36 formed in the frame 31 and the slit-shaped opening 47 formed in the second case member 43. 30 is pulled out.

  The lead wiring film lead-out portion 36 of the frame 31 is formed over the entire height direction of the receding surface 31a of the outer surface of the frame 31, and the first side surface portion 40 of the first case member 38 is retracted. The height is lower than the height of the surface 31a. Therefore, the lead wiring film 20 pulled out from the lead wiring film leading portion 36 of the frame 31 is between the edge of the first side surface portion 40 of the first case member 38 and the horizontal surface of the lower end of the non-retreating surface 31b of the frame 31. It can be pulled out of the case 30 from the slit-shaped opening 47 of the second case member 43 through the space. Therefore, it is not necessary to provide a lead-out portion for the lead wiring film 20 on the first side surface portion 40 of the first case member 38.

  Further, at predetermined positions of the first side surface portion 40 of the first case member 38, two sides along the height direction of the first side surface portion 40 are separated from the first side surface portion 40, and the first main surface portion 39 is separated. A contact piece 42 is formed which is elastically deformed so as to be inclined with respect to the first side surface portion 40 toward the tip on the opposite side from the base portion connected to.

  In this embodiment, the contact piece 42 is an outer surface of the first side surface portion 40 of each side of the first case member 38 on which the wiring film 9 of the frame 31 and the lead portions 35 and 36 of the lead wiring film 20 are formed. Is formed on the first side surface portion 40 covering the surface of the first side surface portion 40 while avoiding the positions of the drawer portions 35 and 36.

  Further, in this embodiment, two predetermined distances corresponding to the width of the contact piece 42 are provided at predetermined positions on the first side surface portion 40 of the first case member 38 and extend over the entire length of the first side surface portion 40 in the height direction. Cuts 41, 41 are provided, and the contact piece 42 is formed by a portion between the two cuts 41, 41 of the first side face part 40.

  The contact piece 42 is formed to be flush with the first side surface portion 40 on which the contact piece 42 is formed, that is, to rise in a direction perpendicular to the first main surface 39 of the first case member 38. By a pressing force from the outside, the base portion connected to the first main surface portion 39 is used as a fulcrum portion and elastically deforms so as to be inclined toward the outer surface direction of the first side surface portion 40 toward the tip.

  Further, the contact piece 42 corresponds to the position of the contact piece 42 of the first case member 38 on the receding surface 31 a of the outer side surface of the frame 31, that is, the portion covered with the first side face portion 40 of the first case member 38. The contact piece 42 is elastically deformed so as to incline toward the outer surface of the first side surface portion 40 toward the front end thereof as the first case member 38 is fitted to the frame 31. A contact piece extruding protrusion 37 that forcibly contacts the second side surface portion 45 of the second case member 43 with a portion on the front end side (hereinafter referred to as a front end portion) of the piece 42 is formed.

  The contact piece push-out protrusion 37 has a surface that contacts the contact piece 42 (a surface facing outward of the outer surface of the frame 31) from the lower main surface 33 side to the upper main surface 32 side with respect to the outer surface of the frame 31. It is formed in the wedge shape inclined so that it may protrude diagonally toward.

  Further, the contact piece extrusion protrusion 37 has a lower end of an inclined surface that contacts the contact piece 42 in a lower end side (lower main surface 33 side) region of the retreating surface 31a of the frame 31, for example, a lower half region of the retreating surface 31a. It is formed in a protruding height smaller than the receding width of the receding surface 31a from the non-receding surface 31b so as to coincide with the lower end of the receding surface 31a.

  On the other hand, the first side surface portion 40 of the first case member 38 has a height that is greater than half the height of the receding surface 31 a of the frame 31. And the contact piece 42 which consists of the part between the two notches 41 and 41 of the 1st side surface part 40 makes the 1st main surface part 39 of the 1st case member 38 contact | abut to the lower main surface 33 of the flame | frame 31. The tip of the contact piece 42 is formed at a height that passes through the contact piece pushing projection 37. In this embodiment, the height of the contact piece 42 is the same as the height of the first side surface portion 40 of the first case member 38 (see FIG. 5).

  In the display device of this embodiment, after the liquid crystal display panel 1 and the surface light source 10 are accommodated in the component accommodating space of the frame 31, the first case member 38 is fitted from the lower main surface 33 side of the frame 31. The case 30 is assembled by fitting the second case member 43 from the upper main surface 32 side.

  In manufacturing the display device, the case 30 is assembled by, for example, a procedure of first fitting the second case member 43 to the frame 31 and then fitting the first case member 38. In the assembly of the case 30, the first case member 38 has an end edge of the first side surface portion 40 with the receding surface 31 a of the outer side surface of the frame 31 and the second side surface portion 45 of the second case member 43 as shown in FIG. 8. And the first case member 38 is pressed against the frame 31 in this state.

  As described above, when the first case member 38 is fitted after the second case member 43 is fitted to the frame 31, the contact piece 42 formed on the first side surface portion 40 of the first case member 38 is attached to the frame 31. It is pushed by the contact piece pushing projection 37 formed on the receding surface 31 a and is elastically deformed so as to be inclined toward the outer surface of the first side face portion 40 toward the tip of the contact piece 42.

  That is, the edge of the first side surface portion 40 of the first case member 38 is inserted between the receding surface 31a of the outer side surface of the frame 31 and the second side surface portion 45 of the second case member 43, and the first side member 40 is in this state. When the case member 38 is pressed against the frame 31, the contact piece 42 rides on the contact piece pushing protrusion 37.

  At this time, the contact piece push-out protrusion 37 is inclined so that the surface contacting the contact piece 42 protrudes outward from the lower main surface 33 side toward the upper main surface 32 side with respect to the outer surface of the frame 31. As the first case member 38 is pressed toward the frame 31, the contact piece 42 smoothly slides while sliding upward on the inclined surface of the contact piece pushing projection 37. It rides on the contact piece extrusion protrusion 37.

  When the first case member 38 is further pressed against the frame 31 side, the contact piece 42 is pushed outward by the contact piece push-out projection 37 and elastically deformed so as to incline outward toward the tip of the contact piece 42. The tip of the contact piece 42 contacts the second side surface 45 of the second case member 43.

  The elastic deformation of the contact piece 42 toward the outer surface increases as the contact piece 42 moves up to the contact piece push-out protrusion 37, and the tip of the contact piece 42 moves along with the second case member 43. The second side surface portion 45 is contacted with a strong contact pressure.

  In this embodiment, when the contact piece 42 causes the first main surface portion 39 of the first case member 38 to contact the lower main surface 33 of the frame 31, the tip end portion of the contact piece 42 contacts the contact piece extrusion protrusion 37. Therefore, when the first case member 38 is fitted until the first main surface portion 39 comes into contact with the lower main surface 33 of the frame 31, the tip end portion of the contact piece 42 contacts the contact piece extrusion protrusion 37. Project outward to a greater extent. Therefore, the tip of the contact piece 42 contacts the second side surface 45 of the second case member 43 with a stronger contact pressure.

  Note that the tip of the contact piece 42 that has passed through the contact piece pushing protrusion 37 has an elasticity on the tip of the contact piece 42. It is elastically deformed so as to bend along, and comes into contact with the second side surface portion 45 with a certain contact area.

  Thus, when the contact piece 42 formed on the first side surface portion 40 of the first case member 38 contacts the second side surface portion 45 of the second case member 43, the metal first case member 38 and the second case The member 43 is electrically connected via the contact piece 42.

  Further, the pressing force from the contact piece pushing projection 37 applied to the contact piece 42 not only elastically deforms the contact piece 42 but also the first case member 38 with respect to the frame 31 and the first contact piece 42 formed on the contact piece 42. The one side surface portion 40 acts to move in a direction away from the outer surface of the frame 31 (left direction in FIG. 5). Therefore, when the first case member 38 is fitted to the frame 31, the first side surface portion 40 opposite to the side on which the contact piece 42 of the first case member 38 is formed is outside the frame 31 as shown in FIG. It is pressed against the receding surface 31a on the side surface.

  Further, the contact force of the contact piece 42 with respect to the second side surface portion 45 of the second case member 43 is such that the second case member 43 contacts the frame 31 and the first case member 38 with the contact piece 42 contacting the second side surface. The portion 45 acts to move in a direction away from the outer side surface of the frame 31 and the first side surface portion 40 of the first case member 38 (leftward in FIG. 5). Therefore, the second side surface portion 45 opposite to the side on which the contact piece 42 of the second case member 43 contacts is pressed against the non-retreating surface 31 b on the outer side surface of the frame 31.

  Therefore, the fitted first case member 38 has a frictional force on the contact surface between the contact piece 42 and the contact piece push-out projection 37, and a friction on the pressing surface between the opposite first side surface portion 40 and the frame 31. It is fixed to the frame 31 by force. Further, the second case member 43 is formed by the frame 31 by the friction force of the contact surface between the contact piece 42 and the second side surface portion 45 and the friction force of the pressing surface between the second side surface portion 45 and the frame 31 on the opposite side. And it is fixed to the first case member 38.

  Therefore, even if the first case member 38 and the second case member 43 are not fixed to the frame 31 by means such as screwing, vibration and a relatively light impact are applied to the fitted state of both the case members 38 and 43. It can be held so as not to fall off.

  Note that the case 30 may be performed by first fitting the first case member 38 to the frame 31 and then fitting the second case member 43. In this case, after the first case member 38 is fitted, the tip end portion of the contact piece 42 elastically deformed in the outer surface direction (the portion that has passed through the contact piece pushing projection 37) is elastically deformed so as to be pushed back to the frame 31 side. The second case member 43 may be fitted so that the second side surface portion 45 covers the outside of the contact piece 42.

  In the case 30, the metal first case member 38 and the second case member 43 are electrically connected to each other through the contact piece 42, so that the first case member 38 and the second case member 43 have the same potential. Become. Accordingly, the first and second case members 38 and 43 have a static electricity shielding function to shield external static electricity.

  Therefore, it is possible to prevent malfunction and destruction due to static electricity of the liquid crystal display panel 1 housed in the component housing space of the frame 31 and the driver element 8 mounted on the liquid crystal display panel 1 and the light emitting element 17 of the surface light source 10.

  The case 30 forcibly deforms the contact piece 42 formed on the first side surface portion 40 of the first case member 38 by the contact piece pushing protrusion 37 formed on the outer surface of the frame 31 to forcibly form the first case member 38. Since the two side surface portions 45 are brought into contact with each other, even if there is an error in the relative dimensions of the first case member 38 and the second case member 43, the contact piece 42 is connected to the second side surface of the second case member 43. The part 45 can be brought into contact with a sufficient contact pressure.

  Therefore, according to the case 30, it is possible to obtain a stable electrostatic shielding effect without variation. Moreover, since the contact pressure of the contact piece 42 against the first side surface portion 40 of the first case member 38 does not become weak due to repeated vibration or the like, a stable electrostatic shielding effect can be maintained for a long time.

  Moreover, in the said Example, two intervals over the full length of the height direction of the 1st side surface part 40 are provided in the predetermined location of the 1st side surface part 40 of the 1st case member 38 at the space | interval equivalent to the width | variety of the contact piece 42. Since the notches 41 and 41 are provided, and the contact piece 42 is formed by the portion between the two notches 41 and 41 of the first side surface portion 40, the first case member 38 and the contact piece 42 are connected to one metal plate. Can be manufactured at low cost.

  On the other hand, the contact piece push-out protrusion 37 is wedge-shaped so that the surface abutting on the contact piece 42 protrudes outward from the lower main surface 33 side toward the upper main surface 32 side with respect to the outer surface of the frame 31. Is formed. Therefore, the contact piece 42 can be smoothly run on the contact piece pushing protrusion 37 without receiving a large resistance force, and therefore the first case member 38 can be easily fitted to the frame 31.

  Further, the contact piece 42 has a height at which the tip of the contact piece 42 passes over the contact piece pushing projection 37 when the first main surface portion 39 of the first case member 38 is brought into contact with the lower main surface 33 of the frame 31. Is formed. Therefore, the tip of the contact piece 42 that has passed through the contact piece push-out protrusion 37 is projected outwardly to a greater extent than the contact piece push-out protrusion 37 and applied to the second side face 45 of the second case member 43 with a stronger contact pressure. Can be contacted.

  Further, in the above embodiment, the outer surface of the frame 31 is moved backward from the predetermined position in the height direction toward the inner side of the frame 31 with respect to the portion on the lower main surface 33 side. Since the contact piece extrusion protrusion 37 is formed on the receding surface 31a at a projecting height smaller than the receding width of the receding surface 31a, the planar shape viewed from the upper main surface 32 side of the frame 31 is formed. Is a shape in which the contact piece extrusion protrusion 37 does not protrude outward.

  The first side surface portion 40 of the first case member 38 has a height lower than the height of the receding surface 31a on the outer side surface of the frame 31, and the inner surface of the first side surface portion 40 is close to the receding surface 31a. The second side surface portion 45 of the second case member 43 is formed so as to be in contact with the surface of the second case member 43 at a height at which the end portion covers the outer side of the first side surface portion 40 of the first case member 38. The inner surface of 45 is formed so as to be close to or in contact with the outer surface of the first side surface portion 40.

  Therefore, the outer shape of the case 30 assembled by fitting the first case member 38 and the second case member 43 to the frame 31 is outside the non-retreating surface 31b of the outer side surface of the frame 31. Thus, the size of the case 30 can be prevented.

  In the above-described embodiment, the receding surface 31 a and the non-retreating surface 31 b of the outer surface of the frame 31 are formed on surfaces perpendicular to the two main surfaces 32 and 33 of the frame 31, One side surface portion 40 is formed by bending in a direction perpendicular to the first main surface portion 39 of the first case member 38, and the second side surface portion 45 of the second case member 43 is formed by the second case member 43. The second main surface portion 44 is bent at a right angle. Therefore, the first case member 38 is fitted so that the first side surface portion 40 is parallel to the receding surface 31 a of the frame 31, and the second case member 43 and the second side surface portion 45 are not receding surfaces of the frame 31. It can be fitted so as to be parallel to 31 b and the first side surface portion 40 of the first case member 38.

  Furthermore, in the above-described embodiment, the receding surface 31a on the outer side surface of the frame 31 is formed to recede with a width equal to or greater than the thickness of the first side surface portion 40 of the first case member 38 with respect to the non-retreating surface 31b. One case member 38 is fitted to the frame 31 so that the first side surface portion 40 is within the retraction width of the retreat surface 31a with respect to the non-retreat surface 31b, and the second case member 43 is attached to the frame 31 and the first retraction surface 31b. The inner surface of the second side surface portion 45 is fitted to the one case member 38 so as to be close to or in contact with the non-retreating surface 31b of the frame 31 and the outer surface of the first side surface portion 40 of the first case member 38. ing. Therefore, the outer shape of the case 30 is only about the plate thickness of the second side surface portion 45 of the second case member 43 with respect to the outer shape of the frame 31 (the same shape as the outer shape of the upper main surface 32). The enlargement of the case 30 can be prevented more effectively.

  In the display device of the above embodiment, the liquid crystal display panel 1 and the surface light source 10 are accommodated in the component accommodating space of the frame 31, and the liquid crystal display panel 1 is disposed in the frame 31, the first case member 38, and the second main surface portion 44. Since the second case member 43 provided with the display window 46 corresponding to the screen area 1a is fitted, both the liquid crystal display panel 1 and the surface light source 10 are protected from static electricity from the outside. be able to.

[Other embodiments]
In the above embodiment, the contact piece 42 is formed so as to rise in a direction perpendicular to the first main surface 39 of the first case member 38. The contact piece 42 is shown in FIG. 9, for example. In this way, the base portion connected to the first main surface portion 39 is inclined to some extent in the outer surface direction of the first side surface portion 40 from the base portion to the front end, and the front end portion is bent in a direction perpendicular to the first main surface 39. Also good.

  In that case, the inclination angle of the contact piece 42 with respect to the first main surface 39 of the first case member 38 is smaller than the inclination angle of the inclined surface of the contact contact piece extrusion protrusion 37 with respect to the lower main surface 33 of the frame 31 (perpendicularly). (Close angle). If the inclination angle of the contact piece 42 is such an angle, the contact piece 42 moves toward the tip by the pressing force of the contact contact piece pushing projection 37 as the first case member 38 is fitted to the frame 31. The first side surface portion 40 is elastically deformed so as to incline toward the outer surface direction, and contacts the second side surface portion 45 of the second case member 43 with a sufficient contact pressure.

  According to this embodiment, since the tip of the contact piece 42 is formed in a shape bent in a direction perpendicular to the first main surface 39, the tip of the contact piece 42 is formed as shown in FIG. The second case member 43 can be brought into surface contact with the second side surface portion 45 so that the first case member 38 and the second case member 43 can be conducted with a wider contact area.

  In the case 30 of the above embodiment, the contact piece 42 is formed on the first side surface portion 40 on one side of the first case member 38, but the first side surface portion 40 on the plurality of sides of the first case member 38. The contact piece 42 may be formed on the outer surface of the frame 31, and the contact contact piece pushing protrusion 37 may be formed on the outer surface of the frame 31 so as to correspond to each contact piece 42.

  Further, in the above embodiment, the two notches 41 and 41 are provided at predetermined positions of the first side surface portion 40 of the first case member 38, and the contact piece is formed by the portion between the two notches 41 and 41 of the first side surface portion 40. 42, the contact piece is a metal piece different from the first case member 38, and one end thereof is electrically welded to one piece of the first main surface portion 39 of the first case member 38 by rivets or the like. It may be formed by electrically conducting and fixing.

  In that case, a predetermined portion of the first side surface portion 40 of the first case member 38 is notched to a predetermined width over the entire length in the height direction of the first side surface portion 40, and the metal piece is placed in the notched space portion. The contact piece in which two sides along the height direction of the first side surface portion 40 are separated from the first side surface portion 40 can be formed.

  Further, the display device of the above embodiment is one in which the liquid crystal display panel 1 and the surface light source 10 are accommodated in the case 30. However, the present invention is not limited to the plasma display panel or the organic EL (electroluminescence) display panel in the case 30. The present invention can also be applied to a display device containing a self-luminous display panel such as the above.

  Furthermore, the case 30 of the present invention is not limited to the display device, and can be used as a case for housing electronic components other than the display panel.

  DESCRIPTION OF SYMBOLS 1 ... Liquid crystal display panel, 1a ... Screen area, 10 ... Surface light source, 30 ... Case, 31 ... Frame, a ... Retreating surface, 31b ... Non-retreating surface, 32, 33 ... Main surface, 37 ... Contact contact piece extrusion protrusion, 38 ... 1st case member, 39 ... 1st main surface part, 40 ... 1st side surface part, 41 ... Notch, 42 ... Contact piece, 43 ... 2nd case member, 44 ... 2nd main surface part, 45 ... 2nd side surface part 46 ... Display window

Claims (10)

A case for housing electronic components,
A resin frame having a predetermined height, in which a component housing space is formed in an area inside the peripheral edge, and the component housing space is opened on two main surfaces at both ends in the height direction. When,
The first main surface portion that abuts on one main surface of the frame, and a first side surface portion that is bent in the direction of the frame from each side of the first main surface portion. From the main surface side of the metal, the first case member made of metal that is fitted on the outer side surface of the frame with the first side surface portion,
The frame and the first case member include a second main surface portion that contacts the other main surface of the frame, and a second side surface portion bent in the direction of the frame from each side of the second main surface portion. On the other hand, from the other main surface side of the frame, a second case member made of metal that is fitted and fitted on the outer side of the first side surface portion of the first case member,
With
The two sides along the height direction of the first side surface portion are separated from the first side surface portion at a predetermined position of the first side surface portion of the first case member, and the base portion connected to the first main surface portion A contact piece that is elastically deformed so as to be inclined with respect to the first side surface portion toward the tip on the opposite side is formed,
The outer surface of the frame abuts on the contact piece from the frame side, and the contact piece is inclined in the outer surface direction of the first side surface portion when the first case member is fitted to the frame. An electronic component housing case, wherein a contact piece push-out projection is formed to be elastically deformed and to contact the second side surface portion of the second case member.   The contact piece push-out protrusion has a wedge shape inclined so that a surface contacting the contact piece protrudes obliquely from the one main surface side to the other main surface side with respect to the outer surface of the frame The electronic component housing case according to claim 1, wherein the electronic component housing case is formed as follows.   The contact piece is formed at a height at which a tip end portion of the contact piece passes through the contact piece pushing protrusion when the first main surface portion of the first case member is brought into contact with the one main surface of the frame. The electronic component housing case according to claim 2, wherein the electronic component housing case is provided. The outer surface of the frame is configured such that a portion on the one main surface side is retreated in a direction toward the inner side of the frame with a predetermined width with respect to the portion on the other main surface side from a predetermined position in the height direction. Formed in a shape, the contact piece extrusion protrusion on the receding surface is formed at a projecting height smaller than the receding width of the receding surface,
The first side surface portion of the first case member is formed at a height lower than the height of the receding surface, and an inner surface of the first side surface portion is close to or in contact with the receding surface,
The second side surface portion of the second case member has a height at which the end portion covers the outside of the first side surface portion of the first case member, and the inner surface of the second side surface portion is the outer surface of the first side surface portion. The electronic component housing case according to claim 3, wherein the electronic component housing case is formed so as to be close to or in contact with.   The receding surface of the outer surface of the frame and the non-receding surface on the other main surface side of the receding surface are formed in a plane perpendicular to the two main surfaces of the frame, The first side surface portion of the case member is bent in a direction perpendicular to the first main surface portion, and the second side surface portion of the second case member is bent in a direction perpendicular to the second main surface portion. The electronic component housing case according to claim 4, wherein the electronic component housing case is provided. The receding surface of the outer surface of the frame is formed by receding with a width equal to or greater than the plate thickness of the first side surface portion of the first case member with respect to the non-receding surface,
The first case member is fitted to the frame so that the first side surface portion is within a receding width of the receding surface with respect to the non-receding surface,
With respect to the frame and the first case member, the second case member has an inner surface of the second side surface portion on the non-retracted surface of the frame and an outer surface of the first side surface portion of the first case member. The electronic component housing case according to claim 5, wherein the electronic component housing case is fitted so as to be close or in contact with each other.   Two cuts are provided at predetermined positions on the first side surface portion of the first case member over the entire length in the height direction of the first side surface portion at an interval corresponding to the width of the contact piece. The electronic component housing case according to claim 6, wherein the contact piece is formed by a portion between the two cuts of the side surface portion.   The electronic component accommodated in the component accommodating space of the frame is a display panel, and the screen of the display panel is provided on one of the first main surface portion of the first case member and the second main surface portion of the second case member. 8. The electronic component housing case according to claim 1, further comprising a display window corresponding to the area. In a display device in which a display panel is housed in a case,
The case is
A resin frame having a predetermined height, in which a component housing space is formed in an area inside the peripheral edge, and the component housing space is opened on two main surfaces at both ends in the height direction. When,
A metal first case member comprising a first main surface portion that abuts on one main surface of the frame, and a first side surface portion bent in the direction of the frame from each side of the first main surface portion;
A metal second case member comprising a second main surface portion contacting the other main surface of the frame and a second side surface portion bent in the direction of the frame from each side of the second main surface portion;
With
Either one of the first main surface portion of the first case member and the second main surface portion of the second case member is provided with a display window corresponding to the screen area of the display panel,
The two sides along the height direction of the first side surface portion are separated from the first side surface portion at a predetermined position of the first side surface portion of the first case member, and the base portion connected to the first main surface portion A contact piece that is elastically deformed so as to be inclined with respect to the first side surface portion toward the tip on the opposite side is formed,
A contact piece extrusion protrusion is formed on the outer surface of the frame so as to contact the contact piece from the frame side and elastically deform the contact piece so as to incline toward the outer surface direction of the first side surface portion.
The display panel is disposed in the component housing space of the frame,
The first case member is fitted to the frame from the one main surface side of the frame, covering the first side surface portion on the outer surface of the frame,
The second case member covers the outer side of the first side surface portion of the first case member from the other main surface side of the frame with respect to the frame and the first case member. And fitted,
The contact piece is elastically deformed by a contact piece pushing projection and is brought into contact with the inner surface of the second side surface portion of the second case member, and the first case member and the second case member are electrically connected by the contact piece. A display device characterized by being made.   The said display panel is a liquid crystal display panel, The said liquid crystal display panel and the surface light source which irradiates light toward the said liquid crystal display panel are arrange | positioned in the component accommodation space of the said frame. 9. The display device according to 9.

Images