JP6379064B2 - Reflective sheet, backlight device, display device, and television receiver - Google Patents

Description

  The present invention relates to a reflection sheet that reflects light from a light source, a backlight device including the reflection sheet, a display device, and a television receiver.

  Thin display devices that occupy a small indoor area compared to the size of the display screen are widely used because they can effectively use a limited indoor space. The display device is, for example, a display panel configured by a liquid crystal panel, a light source disposed on the back side of the display panel, a backlight chassis that supports the light source, and the light source. (Refer patent document 1).

  A diffusion plate or an optical sheet is provided between the reflection sheet and the display panel. The reflection sheet is provided with a plurality of holes, and support pins for supporting the diffusion plate or the optical sheet, rivets for positioning the reflection sheet, and the like are inserted into the holes to support the diffusion plate or the optical sheet and the reflection sheet. Perform positioning.

JP2013-225520A

  However, when assembling the display device, an operator may accidentally insert a rivet into the hole into which the support pin is to be inserted.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a reflection sheet, a backlight device, a display device, and a television receiver that can prevent erroneous insertion of pins or rivets. .

  The reflection sheet according to the present invention includes a first insertion hole having a smaller diameter than the head of a rivet or screw to be inserted, and a second insertion hole for inserting a pin having a large diameter part larger in diameter than the other part. And the second insertion hole has a shape different from that of the first insertion hole, and the maximum diameter of the second insertion hole is larger than the diameter of the head and the large diameter portion. It is smaller than the diameter.

  The reflection sheet according to the present invention is characterized in that the second insertion hole has a non-round shape extending in at least one direction.

  The reflection sheet according to the present invention is characterized in that the second insertion hole is a long hole.

  The backlight device according to the present invention includes the above-described reflection sheet, a substrate that faces the reflection sheet, supports the light source, and a support that is located on the opposite side of the reflection sheet on the substrate and supports the substrate. A first hole and a second hole corresponding to the first insertion hole and the second insertion hole are provided in the substrate, and a pattern is provided around the second hole. .

  In the backlight device according to the present invention, a third hole for inserting a fixing member for fixing the substrate to the support portion is provided in the substrate, and a shape different from the pattern is formed around the third hole. Two patterns are provided, and the reflection sheet is provided with a third insertion hole having a diameter larger than that of the third hole at a position corresponding to the third hole.

  A display device according to the present invention includes the above-described backlight device and a display unit that displays an image by light from the backlight device.

  A television receiver according to the present invention includes the display device described above and a receiving unit that receives a television broadcast, and displays an image on the display device based on the television broadcast received by the receiving unit. It is characterized by the above.

  Since the second insertion hole has a different shape from the first insertion hole, the operator can distinguish the first insertion hole and the second insertion hole. Also, since the maximum diameter of the second insertion hole is larger than the diameter of the head of the rivet or screw and smaller than the diameter of the large diameter portion of the pin, the operator erroneously inserts the rivet or screw into the second insertion hole. In addition, the second insertion hole can be visually recognized, and erroneous insertion can be easily recognized.

It is a perspective view which shows a television receiver schematically. It is a disassembled perspective view which briefly shows a television receiver. It is a partial enlarged front view which shows a LED board schematically. It is a partial enlarged front view which shows a reflective sheet schematically. It is a partial enlarged front view which shows the state which fixed the LED board to the backlight chassis. It is a partial enlarged front view which briefly shows the state which mounted the reflective sheet in the LED board. It is a partial enlarged front view which shows the state which inserted the rivet and the support pin into the 1st insertion hole and the 2nd insertion hole. It is a perspective view which shows the assembled LED board and reflection sheet. FIG. 6 is a partially enlarged front view schematically showing a state where a rivet is erroneously inserted into a support pin hole.

  The present invention will be described below with reference to the drawings showing a television receiver according to an embodiment. FIG. 1 is a perspective view schematically showing a television receiver, and FIG. 2 is an exploded perspective view schematically showing the television receiver. In the following description, the top / bottom / left / right front / rear shown in the figure are used.

  In the figure, reference numeral 1 denotes a television receiver. The television receiver 1 is arranged in a display device 100 for displaying video and the display device 100, and broadcast waves (television) are transmitted from an antenna (not shown). John broadcast) and a decoder 300 that is disposed in the display device 100 and decodes the encoded broadcast wave. The television receiver 1 decodes the broadcast wave received by the tuner 200 by the decoder 300 and displays an image on the display device 100 based on the decoded information. Note that the tuner 200 and the decoder 300 may be provided outside the display device 100 and connected to the display device 100.

  The television receiver 1 includes a rectangular display panel 2 having a liquid crystal, and the display panel 2 is configured to control the voltage applied to the liquid crystal to adjust the light transmittance. A rectangular frame-shaped front frame 3 is provided on the peripheral edge of the display panel 2. On the rear side of the display panel 2, a plurality of optical sheets 4 that diffuse light and emit it to the front side are provided. Note that a diffusion plate may be provided in place of the optical sheet 4 or together with the optical sheet 4.

  A backlight chassis 9 having a rectangular plate shape that is long on the left and right is provided behind the optical sheet 4. An LED substrate 7 is provided on the front surface of the backlight chassis 9, and a plurality of LEDs 8 (Light Emitting Diodes) are mounted on the front surface of the LED substrate 7. A reflective sheet 5 that reflects light is provided on the front side of the LED substrate 7. The reflection sheet 5 is provided with a light source hole 50 at a position corresponding to the LED 8, and the LED 8 projects forward from the reflection sheet 5 through the light source hole 50. The backlight chassis 9, the LED substrate 7, the LED 8, and the reflection sheet 5 constitute a backlight device.

  Between the backlight chassis 9 and the display panel 2, a rectangular frame-like panel chassis 6 that is long on the left and right is provided. The panel chassis 6 supports the display panel 2. A middle cabinet 10 is provided on the peripheral edge of the backlight chassis 9, and a rear cabinet 11 is provided on the rear surface of the backlight chassis 9.

  FIG. 3 is a partially enlarged front view schematically showing the LED substrate 7, and FIG. 4 is a partially enlarged front view schematically showing the reflective sheet 5.

  As shown in FIG. 3, a plurality of LEDs 8 are arranged in a grid pattern on the front surface of the LED substrate 7. Between the plurality of LEDs 8, a fastening hole 71 for fastening the LED board 7 and the reflection sheet 5 together, a support pin hole 72 for inserting the support pin 92, and the LED board 7 are connected to the backlight chassis 9. A fixing hole 73 is provided for fixing to the head. The positions of the joint fastening hole 71, the support pin hole 72, and the fixing hole 73 are appropriately set according to the specifications of the television receiver 1.

  Around the support pin hole 72, a first pattern 72a having a square shape in front view is printed. The first pattern 72a is colored, for example, black. It may be colored with a color other than black. The shape of the first pattern 72a is not limited to a quadrangle, and may be a triangle or a circle.

  Around the fixing hole 73, a second pattern 72b having a round shape in front view is printed. The second pattern 72b is colored, for example, black. It may be colored with a color other than black. The color of the second pattern 72b is preferably different from the color of the first pattern 72a. The shape of the second pattern 72b is not limited to a round shape, and may be a triangle or a quadrangle, but a shape different from the first pattern 72a is adopted.

  The backlight chassis 9 has rivets 91, support pins 92, and fixing rivets 93 (see FIG. 7), which will be described later, at positions corresponding to the fastening holes 71, the support pin holes 72, and the fixing holes 73, respectively. A non-locking hole (not shown) to be stopped is provided.

  As shown in FIG. 4, the reflection sheet 5 is provided with a plurality of light source holes 50 in a lattice shape. The position of the light source hole 50 corresponds to the position of the LED 8. A first insertion hole 51, a second insertion hole 52, and a third insertion hole 53 are provided between the plurality of light source holes 50. The positions of the first insertion hole 51, the second insertion hole 52, and the third insertion hole 53 correspond to the positions of the joint fastening hole 71, the support pin hole 72, and the fixing hole 73 of the LED substrate 7.

  The first insertion hole 51 is substantially circular. The second insertion hole 52 is a long hole that is long on the left and right. The major axis of the second insertion hole 52 is substantially the same as the left-right width of the first pattern 72 a and is longer than the diameters of the support pin hole 72 and the first insertion hole 51. The second insertion hole 52 has a different shape from the first insertion hole 51. The diameter of the third insertion hole 53 is substantially the same as the diameter of the second pattern 72b.

  Next, assembly of the LED substrate 7 and the reflection sheet 5 will be described. 5 is a partially enlarged front view schematically showing a state in which the LED substrate 7 is fixed to the backlight chassis 9, and FIG. 6 is a partially enlarged front view schematically showing a state in which the reflective sheet 5 is placed on the LED substrate 7. FIG. 8 is a partially enlarged front view schematically showing a state where the rivet 91 and the support pin 92 are inserted into the first insertion hole 51 and the second insertion hole 52, and FIG. 8 is a perspective view showing the assembled LED substrate 7 and the reflection sheet 5. .

  As shown in FIG. 5, the operator inserts the fixing rivet 93 into the fixing hole 73. The fixed rivet 93 has a head and a shaft. The diameter of the head of the fixing rivet 93 is larger than the diameter of the fixing hole 73. The operator can visually recognize the second pattern 72 b and insert the shaft of the fixing rivet 93 into the fixing hole 73. The tip of the shaft of the inserted fixed rivet 93 is locked to the edge of the hole of the backlight chassis 9. Therefore, the LED board 7 is fixed to the backlight chassis 9 by the fixed rivet 93.

  Next, the operator places the reflection sheet 5 on the front surface of the LED substrate 7. As shown in FIG. 6, the operator can visually recognize the first pattern 72 a through the second insertion hole 52 and recognize the position of the support pin hole 72. On the other hand, there is no pattern around the fastening hole 71, and the second insertion hole 52 has a shape different from that of the first insertion hole 51. Therefore, the operator can distinguish and recognize the positions of the support pin hole 72 and the joint fastening hole 71. Further, the head of the fixed rivet 93 is exposed in the third insertion hole 53.

  As shown in FIG. 7, the operator inserts a rivet 91 into the joint fastening hole 71 and inserts a support pin 92 into the support pin hole 72. The rivet 91 has a head and a shaft. The diameter of the head of the rivet 91 is larger than the first insertion hole 51 and smaller than the long diameter of the second insertion hole 52. Further, a locking portion (not shown) for locking to the peripheral edge of the non-locking hole is provided at the tip of the shaft of the rivet 91. When the shaft of the rivet 91 is inserted into the co-tightening hole 71, the locking portion is locked in the non-locking hole, and the reflective sheet 5, the LED substrate 7 and the backlight chassis are interposed between the head and the locking portion. 9 is pinched.

  As shown in FIGS. 7 and 8, the support pin 92 includes a disk-shaped large-diameter portion 92a and a rod-shaped small-diameter portion 92b that protrudes from one surface of the large-diameter portion 92a and has a smaller diameter than the large-diameter portion 92a. Prepare. A locking portion (not shown) is provided on the other surface side of the large diameter portion 92a. The diameter of the large diameter portion 92 a is longer than the long diameter of the second insertion hole 52. When the locking part side of the support pin 92 is inserted into the support pin hole 72, the locking part is locked to the non-locking hole, and between the large diameter part 92a and the locking part, the reflective sheet 5, the LED substrate 7 and the backlight chassis 9 are sandwiched. The optical sheet 4 is supported by the small diameter portion 92b. Further, the entire second insertion hole 52 is covered by the large diameter portion 92a, and the operator cannot visually recognize the second insertion hole 52 and the first pattern 72a.

  FIG. 9 is a partially enlarged front view schematically showing a state in which the rivet 91 is erroneously inserted into the support pin hole 72. The diameter of the head of the rivet 91 is shorter than the long diameter of the second insertion hole 52. When the rivet 91 is mistakenly inserted into the support pin hole 72, the head of the rivet 91 cannot cover the entire second insertion hole 52, so the operator visually recognizes the second insertion hole 52 and the first pattern 72a. be able to.

  Therefore, the operator can visually recognize the second insertion hole 52 or the first pattern 72 a that should not be visually recognized, and can recognize that the rivet 91 has been erroneously inserted into the support pin hole 72.

  In addition, the second insertion hole 52 or the first pattern 72a can be automatically recognized by using an image processing technique and a robot, and the support pin 92 can be inserted into the support pin hole 72. It is also possible to detect erroneous insertion.

  In the television receiver 1 according to the embodiment, the second insertion hole 52 is formed in a non-circular shape extending in at least one direction, for example, a long hole shape, and the maximum diameter is the diameter of the head of the rivet 91. Larger than that and smaller than the diameter of the large diameter portion 92a of the pin, when the operator erroneously inserts the rivet 91 into the second insertion hole 52, the second insertion hole 52 or the first pattern 72a is visually recognized. And erroneous insertion can be easily recognized.

  In addition, since the second pattern 72b different from the first pattern 72a is provided around the fixing hole 73, when the operator fixes the LED substrate 7 to the backlight chassis 9, the position of the fixing hole 73 is determined. Recognizing and fixing rivet 93 can be inserted into fixing hole 73.

  Further, since the head of the fixed rivet 93 is inserted into the third insertion hole 53 of the reflection sheet 5 and exposed, the operator can confirm whether or not the fixed rivet 93 is inserted into the fixing hole 73. it can.

  In addition, you may change the shape of the 1st insertion hole 51 and the 2nd insertion hole 52 so that a mutually different shape may be made. For example, the first insertion hole 51 may be a small perfect circle, and the second insertion hole 52 may be a quadrangle or a polygon such as a star shape that is larger than the first insertion hole 51. Further, the first insertion hole 51 may be a small quadrangle, and the second insertion hole 52 may have a larger circular shape than the first insertion hole 51.

(Embodiment 2)
In the television receiver 1 according to Embodiment 2, instead of the rivet 91 or the fixed rivet 93, a screw having a head and a shaft is used. Of the configurations according to the second embodiment, the details of the configurations similar to those of the first embodiment are omitted.

(Embodiment 3)
In the television receiver 1 according to Embodiment 3, the shape of the second insertion hole 52 is changed to a long hole shape, and is made to be another non-true circle extending in at least one direction. For example, a rectangle, a star, or a triangle is adopted. Of the configurations according to the third embodiment, the details of the configurations similar to those of the first or second embodiment are omitted.

  It should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The technical features described in each embodiment can be combined with each other, and the scope of the present invention is intended to include all modifications within the scope of claims and the scope equivalent to the scope of claims. Is done.

  The following matters are further disclosed regarding the embodiment of the present invention described above.

  In the reflection sheet 5, the first insertion hole 51 having a smaller diameter than the rivet 91 or screw head to be inserted and the pin 92 having the large diameter portion 92 a having a larger diameter than the other part are inserted. In the reflection sheet 5 that includes an insertion hole 52 and reflects light, the second insertion hole 52 has a shape different from that of the first insertion hole 51, and the maximum diameter of the second insertion hole 52 is that of the head. It is larger than the diameter and smaller than the diameter of the large diameter portion 92a.

  In the reflection sheet 5, the second insertion hole 52 has a non-circular shape extending in at least one direction.

  In the reflective sheet 5, the second insertion hole 52 is a long hole.

  In the backlight device, the reflection sheet 5 described above, the substrate 7 facing the reflection sheet 5 and supporting the light source 8, and the opposite side of the reflection sheet 5 in the substrate 7, A support portion 9 that supports the substrate 7, and the substrate 7 has a first hole 71 and a second hole 72 corresponding to the first insertion hole 51 and the second insertion hole 52, and the second hole 72. A pattern 72a is provided around the periphery of the substrate.

  In the backlight device, a third hole 73 into which a fixing member 93 for fixing the substrate 7 to the support portion 9 is inserted is provided in the substrate 7, and the pattern 72 a is formed around the third hole 73. The second pattern 72 b having a different shape from the third hole 73 is provided, and the third insertion hole 53 having a larger diameter than the third hole 73 is provided in the reflective sheet 5 at a position corresponding to the third hole 73. It is characterized by.

  The display device 100 includes the above-described backlight device and the display unit 2 that displays an image using light from the backlight device.

  The television receiver 1 includes the display device 100 described above and a receiving unit 200 that receives a television broadcast, and the display device 100 includes the display device 100 based on the television broadcast received by the receiving unit 200. It is characterized by displaying video.

1 Television receiver 2 Display panel (display unit)
5 Reflective Sheet 51 First Insertion Hole 52 Second Insertion Hole 53 Third Insertion Hole 8 LED (Light Source)
7 LED board (board)
71 Tightening hole (1st hole)
72 Support pin hole (second hole)
72a First pattern (pattern)
72b Second pattern 73 Fixing hole (third hole)
9 Backlight chassis (support)
91 Rivet 92 Support Pin (Pin)
93 Fixing member 92a Large diameter portion 92b Small diameter portion 100 Display device

Claims (7)

Reflective sheet that includes a first insertion hole having a smaller diameter than the head of a rivet or screw to be inserted, and a second insertion hole for inserting a pin having a large-diameter portion having a larger diameter than other parts, and reflects light In
The second insertion hole has a different shape from the first insertion hole,
The maximum diameter of the second insertion hole is larger than the diameter of the head and smaller than the diameter of the large diameter portion. The reflection sheet according to claim 1, wherein the second insertion hole has a non-circular shape extending in at least one direction. The reflection sheet according to claim 2, wherein the second insertion hole is a long hole. The reflective sheet according to any one of claims 1 to 3,
A substrate facing the reflective sheet and supporting the light source;
A support portion that is positioned on the opposite side of the reflective sheet in the substrate and supports the substrate;
A first hole and a second hole corresponding to the first insertion hole and the second insertion hole are provided in the substrate;
A backlight device, wherein a pattern is provided around the second hole. A third hole for inserting a fixing member for fixing the substrate to the support portion is provided in the substrate;
A second pattern having a different shape from the pattern is provided around the third hole,
The backlight device according to claim 4, wherein a third insertion hole having a diameter larger than that of the third hole is provided in a position corresponding to the third hole in the reflection sheet. The backlight device according to claim 4 or 5,
A display device comprising: a display unit configured to display an image by light from the backlight device. A display device according to claim 6;
A receiver for receiving television broadcasts,
A television receiver, wherein an image is displayed on the display device based on the television broadcast received by the receiving unit.

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