JP6568727B2 - Light source device, display device, and television receiver - Google Patents

Description

  The present invention relates to a light source device, a display device that displays an image by light from the light source 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 includes a display panel configured by, for example, a liquid crystal panel, and a light source device arranged on the back side of the display panel. The light source device includes a backlight chassis that supports a light source, and a reflection sheet that is disposed around the light source and reflects light from the light source (see, for example, Patent Document 1).

  The backlight chassis is provided with a penetrating engagement hole, and a support member that supports circuit components is engaged with the engagement hole. The support member includes a light blocking portion that blocks light passing through the engagement hole.

JP-A-2015-69016

  When a hole penetrating the backlight chassis is provided, there is a possibility that foreign matter may enter.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a light source device, a display device, and a television receiver that prevent light leakage to the outside of the chassis and entry of foreign matter to the inside of the chassis. And

  A light source device according to the present invention includes a light source, a box-shaped chassis that supports the light source and is open on the front side, a reflective sheet that is disposed inside the chassis and reflects light, and an edge portion of the chassis A light source device including a holding portion for holding the reflection sheet in the chassis, wherein the chassis is provided with a through hole for supporting the holding portion, and the holding portion is provided in the through hole. And a communication preventing portion for preventing communication between the inside and the outside of the chassis via the.

  In the light source device according to the present invention, the through hole is provided in a rear surface portion of the chassis, and the holding portion includes a convex portion that is inserted into the through hole from the inside of the chassis, and the communication preventing portion. Is provided on the inner side of the chassis, next to the convex portion and at a position not facing the through hole.

  In the light source device according to the present invention, a second through hole for supporting the holding portion is provided in a side surface portion of the chassis, and the holding portion is inserted into the second through hole from the inside of the chassis. A second convex portion and a cover portion provided around the second convex portion and covering the second through hole inside the chassis.

  In the light source device according to the present invention, the through hole is provided in a side surface portion of the chassis, and the holding portion includes a convex portion that is inserted into the through hole from the inside of the chassis, and the communication preventing portion. Is provided around the convex portion and covers the through hole inside the chassis.

  A display device according to the present invention includes any one of the light source devices described above and a display unit that is disposed on the front side of the light source device and displays an image.

  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.

  In the light source device, the display device, and the television receiver according to the present invention, the communication preventing unit prevents foreign matter from entering the inside of the chassis and light from leaking to the outside of the chassis through the through hole. Can do.

1 is a perspective view schematically showing a television receiver according to Embodiment 1. FIG. It is a disassembled perspective view which briefly shows a television receiver. It is a perspective view which briefly shows a holding part. In FIG. 3, it is the elements on larger scale which expanded the part shown by IV. It is a partial expanded rear view which shows the edge part of the rear surface part of a backlight chassis schematically. It is a partial expanded side view which shows the side part of a backlight chassis schematically. It is the partial expansion perspective view which visually recognized the backlight chassis which attached the holding | maintenance part from the rear side. 10 is a partially enlarged perspective view of a holding unit in the vicinity of a communication preventing unit of a television receiver according to Embodiment 2. FIG. It is the partial expansion perspective view which visually recognized the backlight chassis which attached the holding | maintenance part from the rear side. 10 is a partially enlarged perspective view of a holding portion in the vicinity of a communication preventing portion of a television receiver according to Embodiment 3. FIG.

(Embodiment 1)
Hereinafter, the present invention will be described with reference to the drawings showing a television receiver according to a first 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.

  Behind the optical sheet 4 is provided a backlight chassis 9 having a rectangular box shape that is open on the left and right sides with an opening on the front side. 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 reflection sheet 5 is held by the backlight chassis 9 by the holding unit 6. 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-shaped holding portion 6 that is long on the left and right is provided. The holding unit 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.

  3 is a perspective view schematically showing the holding portion 6, and FIG. 4 is a partially enlarged perspective view in which a portion indicated by IV in FIG. 3 is enlarged. The holding portion 6 is provided along each edge portion of the backlight chassis 9. The holding unit 6 includes a long and narrow base plate 61 with one surface facing backward and the other surface facing forward. A plurality of columnar convex portions 62 discharged backward are provided on one surface (rear surface) of the base plate 61.

  Two convex portions 62 and 62 are arranged in pairs in the longitudinal direction of the base plate 61, and the plurality of pairs are arranged in parallel in the longitudinal direction of the base plate 61 with a predetermined interval. A communication preventing portion 63 is provided next to each of the two convex portions 62 that are paired, and the communication preventing portion 63 is disposed between the two convex portions 62 that are paired. That is, the two communication preventing portions 63 and 63 are paired and located between the two convex portions 62. The communication preventing part 63 extends in a direction (short direction) perpendicular to the longitudinal direction of the base plate 61, and is provided on the rear surface of the base plate 61 over the entire width in the short direction.

  A plate-like cover portion 64 (communication prevention portion) protrudes forward from the outer edge portion of the base plate 61 between the paired two communication prevention portions 63. The cover portion 64 is provided with a locking claw 65 (second convex portion, convex portion) that is locked to a second through hole 92 described later and protrudes outward.

FIG. 5 is a partially enlarged rear view schematically showing the edge portion of the rear surface portion 91 of the backlight chassis 9, and FIG. 6 is a partially enlarged side view schematically showing the side surface portion 92 of the backlight chassis 9.
The backlight chassis 9 includes a rectangular rear surface portion 91 and a side surface portion 92 that protrudes forward from the edge portion of the rear surface portion 91. The rear surface portion 91 is provided with a plurality of through holes 91a, 91a, ..., 91a. The through hole 91 a is a long hole extending along the edge of the rear surface portion 91, and is provided at a position corresponding to the convex portion 62.

  The side surface portion 92 is provided with a plurality of second through holes (through holes) 92a, 92a,. The second through hole 92 a is a long hole extending along the edge of the rear surface portion 91, and is provided at a position corresponding to the locking claw 65.

  FIG. 7 is a partially enlarged perspective view of the backlight chassis 9 to which the holding unit 6 is attached as viewed from the rear side. As shown in FIG. 7, when the holding part 6 is attached to the inside of the backlight chassis 9, the convex part 62 is inserted into the through hole 91a and protrudes rearward. The locking claw 65 is inserted into the second through hole 92a and locked to the edge portion of the second through hole 92a. The cover portion 64 covers the entire second through hole 92a from the inside of the backlight chassis 9.

  The communication preventing part 63 is arranged at a position not facing the through hole 91a and is not visible from the through hole 91a. For this reason, the light of the LED 8 is prevented from advancing by the communication preventing unit 63 before reaching the through hole 91a. Further, foreign matter such as dust that has entered through the through hole 91a is prevented from moving by the communication preventing portion 63 before entering the inside of the backlight chassis 9.

  Further, since the entire second through hole 92a is covered with the cover portion 64, it is possible to prevent the light of the LED 8 from passing through the second through hole 92a and leaking outside the backlight chassis 9. In addition, foreign matter can be prevented from entering the backlight chassis 9 from the outside of the backlight chassis 9.

  Since the through-hole 91a and the second through-hole 92a are formed in a long hole shape, the convex portion 62 and the locking claw 65 can move corresponding to the expansion / contraction of the reflection sheet 5, and the reflection sheet 5 can be moved. It is possible to prevent the occurrence of wrinkles. The LED 8 is an example of a light source, and other light sources such as a cold cathode fluorescent tube, a laser diode, and an organic EL may be used instead of the LED 8.

(Embodiment 2)
The present invention will be described below with reference to the drawings showing a television receiver according to a second embodiment. FIG. 8 is a partially enlarged perspective view of the holding portion 6 in the vicinity of the communication preventing portion 63, and FIG. 9 is a partially enlarged perspective view of the backlight chassis 9 to which the holding portion 6 is attached as viewed from the rear side. Unlike the first embodiment, the second embodiment does not include the cover portion 64. Even in this case, the communication preventing unit 63 can prevent light leakage and foreign matter from entering.

  Of the configurations according to the second embodiment, configurations similar to those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

(Embodiment 3)
Hereinafter, the present invention will be described with reference to the drawings showing a television receiver according to a third embodiment. FIG. 10 is a partially enlarged perspective view of the holding portion 6 in the vicinity of the communication preventing portion 63. Unlike the first embodiment, the third embodiment does not include the communication preventing unit 63. Even in this case, the cover part 64 can prevent light leakage and entry of foreign matter.

  Of the configurations according to the third embodiment, configurations similar to those of the first or second embodiment are denoted by the same reference numerals, and detailed description thereof is 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.

  The light source device according to the present invention includes a light source 8, a box-shaped chassis 9 that supports the light source 8 and is open on the front side, a reflective sheet 5 that is disposed inside the chassis 9 and reflects light, In a light source device provided at an edge portion of the chassis 9 and having a holding portion 6 for holding the reflective sheet 5 on the chassis 9, a through hole 91 a for supporting the holding portion 6 is provided in the chassis 9. The holding portion 6 includes a communication preventing portion 63 that blocks the movement of an object and light to the inside and outside of the chassis 9 through the through hole 91a.

  In the light source device according to the present invention, the through hole 91 a is provided in the rear surface portion of the chassis 9, and the holding portion 6 has a protrusion 62 inserted into the through hole 91 a from the inside of the chassis 9. The communication preventing portion 63 is provided on the inner side of the chassis 9 next to the convex portion 62 and at a position not facing the through hole 91a.

  In the light source device according to the present invention, a second through hole 92 a for supporting the holding portion 6 is provided in a side surface portion of the chassis 9, and the holding portion 6 extends from the inside of the chassis 9 to the second portion. A second convex portion 65 to be inserted into the through-hole 92a; and a cover portion 64 provided around the second convex portion 65 and covering the second through-hole 92a inside the chassis 9. It is characterized by.

  In the light source device according to the present invention, the through hole 92a is provided in a side surface portion of the chassis 9, and the holding portion 6 includes a convex portion 65 inserted into the through hole from the inside of the chassis 9. The communication preventing portion 64 is provided around the convex portion 65, and covers the through hole 92a inside the chassis 9.

  A display device 100 according to the present invention includes any one of the light source devices described above and a display unit 2 that is disposed on the front side of the light source device and displays an image.

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

  In the present invention, the communication preventing parts 63 and 64 prevent foreign matter from entering the inside of the chassis 9 through the through holes 91a and 92a and light from leaking to the outside of the chassis 9.

  In the present invention, the communication preventing portion 63 is provided at a position that does not face the through hole 91a, and is provided next to the convex portion 62, so that light leaks out from the through hole 91a and foreign matter enters. Can be made to prevent both.

  In the present invention, the cover portion 64 achieves both leakage of light from the second through hole 92a and prevention of foreign matter intrusion.

1 Television receiver 2 Display panel (display unit)
5 Reflective sheet 6 Holding part 8 LED (light source)
9 Backlight chassis (chassis)
61 Base plate 62 Convex part 63 Communication prevention part 64 Cover part (communication prevention part)
65 Locking claw (second convex part, convex part)
91a Through hole 92a Second through hole (through hole)
100 display device 200 tuner (receiver)

Claims (6)

A light source, a box-shaped chassis that supports the light source, and has an opening on the front side; a reflective sheet that is disposed inside the chassis and reflects light; and is provided at an edge of the chassis, the reflective sheet A light source device comprising: a holding portion for holding the
A through hole for supporting the holding portion is provided in the chassis,
The holding portion includes a communication preventing portion that prevents communication between the inside and the outside of the chassis via the through hole ,
The through hole is provided in a rear surface portion of the chassis,
The holding portion includes a convex portion that is inserted into the through hole from the inside of the chassis,
The communication preventing portion is provided inside the chassis, next to the convex portion, and at a non-opposing position with the through hole,
A second through-hole for supporting the holding portion is provided in a side surface portion of the chassis;
The holding part is
A second protrusion inserted into the second through hole from the inside of the chassis;
A light source device comprising: a cover portion provided around the second convex portion and covering the second through hole inside the chassis . A light source, a box-shaped chassis that supports the light source, and has an opening on the front side; a reflective sheet that is disposed inside the chassis and reflects light; and is provided at an edge of the chassis, the reflective sheet A light source device comprising: a holding portion for holding the
A through hole for supporting the holding portion is provided in the chassis,
The holding portion includes a communication preventing portion that prevents communication between the inside and the outside of the chassis via the through hole,
The through hole is provided in a side surface portion of the chassis,
The holding portion includes a convex portion that is inserted into the through hole from the inside of the chassis,
The communication preventing portion is provided around the convex portion and covers the through hole inside the chassis.
A light source device characterized by the above. A light source, a box-shaped chassis that supports the light source, and has an opening on the front side; a reflective sheet that is disposed inside the chassis and reflects light; and is provided at an edge of the chassis, the reflective sheet A light source device comprising: a holding portion for holding the
  A through hole for supporting the holding portion is provided in the chassis,
The holding portion includes a communication preventing portion that prevents communication between the inside and the outside of the chassis via the through hole,
The through hole is provided in a rear surface portion of the chassis,
The holding portion includes an elongated plate-like base plate having one surface facing rearward and the other surface facing forward, and a convex portion inserted into the through-hole from the inside of the chassis on one surface of the base plate. Provided,
The communication preventing portion extends in a short direction of the base plate, and is located on the inner surface of the chassis, next to the convex portion, and on a surface of the base plate at a position not facing the through hole. Provided across the entire width in the short direction
A light source device characterized by the above. A second through-hole for supporting the holding portion is provided in a side surface portion of the chassis;
The holding part is
A second protrusion inserted into the second through hole from the inside of the chassis;
The light source device according to claim 3 , further comprising: a cover portion provided around the second convex portion and covering the second through hole inside the chassis. The light source device according to any one of claims 1 to 4,
A display device, comprising: a display unit disposed on a front side of the light source device and displaying an image. A display device according to claim 5;
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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