WO2013024718A1

WO2013024718A1 - Illumination device, display device, and television receiving device

Info

Publication number: WO2013024718A1
Application number: PCT/JP2012/069821
Authority: WO
Inventors: 良武石元
Original assignee: シャープ株式会社
Priority date: 2011-08-12
Filing date: 2012-08-03
Publication date: 2013-02-21

Abstract

This backlight device (24) is provided with a chassis (22) having a bottom plate (22a) and side plates which rise from the plate surface of the bottom plate (22a) on the front surface side of the bottom plate (22a), LED light sources (28) which are disposed on the front surface side of the bottom plate (22a) and which emit light having directivity and are attached on the side of the side plates (22b) such that the optical axis (L) of the light thereof extends along plate surface of the bottom plate (22a), a reflective sheet (26) which is arranged on the front surface side of the bottom plate (22a), has a convex shape comprising a portion projecting in the frontal direction, and reflects light from the LED light sources (28) in the frontal direction, and optical members (34) which are arranged on both sides of the LED light sources (28) on the side opposite of the bottom plate (22a) and which transmit a portion of the incident light and reflect a portion thereof.

Description

Lighting device, display device, and television receiver

The present invention relates to a lighting device, a display device, and a television receiver.

In recent years, display elements of image display devices such as television receivers are shifting from conventional cathode ray tubes to thin display devices to which thin display elements such as liquid crystal panels and plasma display panels are applied. Is possible. The liquid crystal display device requires a backlight device as a separate illumination device because the liquid crystal panel used for this does not emit light. As an example of such a backlight device, an edge light type backlight device in which a light source such as an LED is arranged on a side plate side of a chassis as a housing is known.

Patent Document 1 discloses an edge light type backlight device. This backlight device is not provided with a light guide plate, and a three-dimensional reflection sheet that is convex toward the display surface side is arranged on the front side of the bottom plate of the chassis. The light emitted from the light source is reflected by the reflection sheet toward the display surface. By applying such a reflection sheet, an edge light type backlight device that guides light from the light source directly to the display surface side without using a light guide plate or the like is realized.

JP 2006-106212 A

(Problems to be solved by the invention)
By the way, in the case of a backlight device that does not include a light guide plate, light directed from directly above the light source (display surface side, opposite to the bottom plate) out of light emitted from the light source directly enters the display surface. For this reason, a portion of the display surface corresponding to the portion directly above the light source becomes excessively bright, and brightness and darkness may occur between the display surface and other portions, resulting in uneven brightness on the display surface.

Here, the backlight device of Patent Document 1 includes a reflector for reflecting light emitted from a light source directly above the light source, thereby preventing a portion corresponding to the light source from being excessively bright. Has been. However, in order to arrange such a member such as a reflector, a space is required in the vicinity of the side plate in the chassis, so that it is difficult to reduce the size of the backlight device.

The technology disclosed in this specification has been created in view of the above problems. The technology disclosed in this specification prevents uneven brightness on the display surface while enabling a narrow frame in a lighting device that reflects light from a light source directly toward the display surface without using a light guide plate or the like. It aims at providing the technique which can be thru | or suppressed.

(Means for solving the problem)
The technology disclosed in this specification includes a chassis having a plate-like portion, a side plate portion rising from the plate surface of the plate-like portion to one surface side of the plate-like portion, and the one of the plate-like portions. A light source attached to the side plate portion side so as to emit light having directivity and having an optical axis of the light along the plate surface of the plate portion, and the plate portion A reflective sheet that is arranged on one surface side, a part of which is convex toward the rising direction of the side plate portion, and that reflects light from the light source in the rising direction of the side plate portion; The present invention relates to an illuminating device including: an optical member that is disposed on a side opposite to the plate-like portion with a light source interposed therebetween and transmits a part of incident light and reflects a part thereof.

According to the illuminating device described above, a part of the light emitted from the light source that is directed to the opposite side of the light source plate is reflected by the optical member to the reflection sheet side. The opposite side will not be overly bright. Further, since the optical member transmits a part of the incident light, it may be arranged so as to overlap with the display surface, and therefore may be arranged outside the chassis. In this case, a space is provided near the side plate in the chassis. Is not required. For this reason, in an illuminating device that directly reflects light from the light source in the direction of the display surface without using a light guide plate or the like, it is possible to prevent or suppress luminance unevenness on the display surface while enabling a narrow frame.

The optical member includes a mounting portion that is attached to a side plate of the chassis, and an extending portion that extends from an edge of the mounting portion toward the center of the plate-like portion in parallel with the plate-like portion. May be.
According to this configuration, a specific configuration of the optical member can be realized.

The optical member may be formed of an acrylic resin.
According to this configuration, a specific configuration of the optical member can be realized.

A light source board having a plurality of light sources disposed on one plate surface; and a mounting plate having the light source substrate disposed on one plate surface and part of which is attached to the plate-like portion. It may be.
According to this structure, the specific structure for attaching a light source to the side plate side is realizable.

The mounting plate may be a heat radiating plate having higher heat dissipation than the plate-like portion.
According to this structure, the heat generated from the light source can be effectively radiated to the outside by the mounting plate.

The light sources may be arranged on the two opposing side plates, and the convex portion of the reflective sheet may be provided at the center position of the two opposing side plates.
According to this configuration, the light emitted from the light sources on both sides can be reflected almost uniformly to the diffusion plate side by the reflection sheet, and the uneven brightness on the display surface can be further prevented or suppressed.

You may further provide the diffusion plate distribute | arranged to the standing | starting front end side of the said side plate.
According to this configuration, unevenness of reflected light can be reduced by the diffusion plate.

A support pin that penetrates through the convex portion of the reflection sheet and the plate-like portion of the chassis, and that supports the diffusion plate with its tip abutting against the diffusion plate may be further provided.
According to this configuration, the diffusion plate can be effectively supported by the tip of the support pin.

The reflective surface of the reflective sheet may be white.
According to this configuration, the reflection efficiency of the reflection sheet can be increased.

The technology disclosed in this specification can also be expressed as a display device including a display panel that performs display using light from the above-described lighting device. A display device in which the display panel is a liquid crystal panel using liquid crystal is also new and useful. A television receiver provided with the above display device is also new and useful.

(The invention's effect)
According to the technology disclosed in this specification, in a lighting device that reflects light from a light source directly in a display surface direction without using a light guide plate or the like, luminance unevenness on the display surface can be achieved while enabling a narrow frame. Can be prevented or suppressed.

1 is an exploded perspective view of a television receiver TV according to Embodiment 1. FIG. An exploded perspective view of the liquid crystal display device 10 is shown. A cross-sectional view of the liquid crystal display device 10 is shown. FIG. 3 shows a cross-sectional view of a liquid crystal display device 110 according to a second embodiment. FIG. 6 shows a cross-sectional view of a liquid crystal display device 210 according to Embodiment 3.

<Embodiment 1>
Embodiment 1 will be described with reference to the drawings. A part of each drawing shows an X-axis, a Y-axis, and a Z-axis, and each axis direction is drawn in a common direction in each drawing. Among these, the Y-axis direction coincides with the vertical direction, and the X-axis direction coincides with the horizontal direction. In addition, unless otherwise noted, the vertical direction is used as a reference for upper and lower descriptions.

FIG. 1 is an exploded perspective view of the television receiver TV according to the first embodiment. The television receiver TV includes a liquid crystal display device 10, front and back cabinets Ca and Cb that are accommodated so as to sandwich the liquid crystal display device 10, a power source P, a tuner T, and a stand S.

FIG. 2 is an exploded perspective view of the liquid crystal display device 10. Here, the upper side shown in FIG. 2 is the front side, and the lower side is the back side. As shown in FIG. 2, the liquid crystal display device 10 has a horizontally long rectangular shape as a whole, and includes a liquid crystal panel 16 as a display panel and a backlight device 24 as an external light source, and these form a bezel having a frame shape. 12 and the like are integrally held.

Subsequently, the liquid crystal panel 16 will be described. The liquid crystal panel 16 has a configuration in which a pair of transparent (highly translucent) glass substrates are bonded together with a predetermined gap therebetween, and a liquid crystal layer (not shown) is enclosed between the glass substrates. Is done. One glass substrate is provided with a switching element (for example, TFT) connected to a source wiring and a gate wiring orthogonal to each other, a pixel electrode connected to the switching element, an alignment film, and the like. The substrate is provided with a color filter and counter electrodes in which colored portions such as R (red), G (green), and B (blue) are arranged in a predetermined arrangement, and an alignment film. Among these, image data and various control signals necessary for displaying an image are supplied to a source wiring, a gate wiring, a counter electrode, and the like from a driving circuit board (not shown). A polarizing plate (not shown) is disposed outside both glass substrates.

Subsequently, the backlight device 24 will be described. FIG. 3 shows a cross-sectional view of a cross section of the liquid crystal display device 10 cut along the vertical direction (Y-axis direction). As shown in FIGS. 2 and 3, the backlight device 24 includes a frame 14, an optical sheet group 18, a diffusion plate 20, a pair of

optical members

34 and 34, and a chassis 22. The optical sheet group 18 is arranged on the front side of the diffusion plate 20. The frame 14 has a frame shape, is disposed along the edge side of the surface of the light guide plate 20 (light output surface 20b), and supports the liquid crystal panel 16 along the inner edge. In the liquid crystal panel 16, a frame-like area at the outer edge supported by the frame 14 is set as a display peripheral area 16b, and a screen can be displayed inside the display peripheral area 16b (area not supported by the frame 14). It is set as a display area 16a. Each of the pair of

optical members

34 and 34 has a shape extending in the long side direction of the chassis 22, and is disposed between the chassis 22 and the diffusion plate 20, and a part of the optical members 34 and the optical sheet group 18. Support. The optical member 34 will be described in detail later. The chassis 22 has a substantially box shape opened to the front side (light emission side, liquid crystal panel 16 side).

In the chassis 22, a pair of mounting

plates

36, 36, a pair of light emitting diode (LED)

units

32, 32, and a reflection sheet 26 are accommodated. Each of the pair of mounting

plates

36 and 36 extends in the long side direction of the chassis 22 and has a substantially L-shaped cross section. A part of the mounting

plates

36 and 36 is disposed in contact with the long side plates 22 b and 22 c of the chassis 22. Has been. The pair of

LED units

32, 32 respectively extend in the long side direction of the chassis 22, are arranged in contact with the inside of the mounting plate 36 on the long side of the chassis 22, and emit light. In the backlight device 24 according to the present embodiment, a so-called edge light method (side light method) in which the LED unit 32 that is a light source is arranged on the side end portion of the light guide plate 20 is adopted.

The chassis 22 is made of, for example, a metal such as an aluminum-based material, and includes a bottom plate 22a having a rectangular shape in plan view, a side plate 22b rising from both outer edges of both long sides of the bottom plate 22a, and outer edges of both short sides of the bottom plate 22a. It consists of a side plate that rises. A space is formed between the diffusion plate 20 and the pair of

LED units

32, 32, and this space serves as a light guide space for guiding light from the LED unit 32. A reflection sheet 26 is placed on the front side of the bottom plate 22a. The reflection sheet 26 has a reflection surface 26 a facing the one plate surface 20 a of the diffusion plate 20, and reflects light emitted from the

LED units

32, 32 to reflect light to the plate surface of the diffusion plate 20. Plays the role of incidence. A power supply circuit board (not shown) for supplying power to the LED unit 32 is attached to the back side of the bottom plate 22a.

The optical sheet group 18 is formed by laminating a diffusion sheet 18a, a lens sheet 18b, and a reflective polarizing plate 18c in this order from the diffusion plate 20 side. The diffusion sheet 18a, the lens sheet 18b, and the reflective polarizing plate 18c have a function of converting light emitted from the LED unit 32 and passing through the diffusion plate 20 into planar light. The liquid crystal panel 16 is disposed on the upper surface side of the reflective polarizing plate 18 c, and the optical sheet group 18 is disposed between the diffusion plate 20 and the liquid crystal panel 16.

The LED unit 32 has a configuration in which LED light sources 28 having directivity and emitting white light are arranged in a line on a resin-made rectangular LED board 30. The LED substrate 30 is disposed in a state where the surface opposite to the surface on which the LED light source 28 is disposed is in contact with the mounting plate 36. The LED light source 28 may emit white light by applying a phosphor having a light emission peak in a yellow region to a blue light emitting element. Alternatively, the blue light emitting element may emit white light by applying a phosphor having emission peaks in the green and red regions. Further, a phosphor having a light emission peak in a green region may be applied to a blue light emitting element, and white light may be emitted by combining a red light emitting element. The LED light source 28 may emit white light by combining a blue light emitting element, a green light emitting element, and a red light emitting element. Further, a combination of an ultraviolet light emitting element and a phosphor may be used. In particular, an ultraviolet light-emitting element may emit white light by applying a phosphor having emission peaks in blue, green, and red, respectively.

The pair of mounting

plates

36 and 36 is a heat radiating plate having higher heat dissipation than the LED substrate 30 or the bottom plate 22a of the chassis 22, and includes a bottom surface portion 36a and a side surface portion 36b rising from an outer edge of the bottom surface portion 36a. It is comprised and has comprised the substantially L shape in the cross sectional view. Specifically, the bottom surface portion 36a is attached along the plate surface of the bottom plate of the chassis, and the side surface portion 36b is perpendicular to the plate surface of the bottom surface portion 36a from one end edge of the bottom surface portion 36a. Standing up. The bottom surface portion 36a is attached to the plate surface of the bottom plate 22a of the chassis 22, the LED unit 32 is attached to one plate surface of the side surface portion 34b, and the other plate surface of the side surface portion 36b is connected to the side plate 22b of the chassis 22. It is in contact. For this reason, the optical axis L of the light emitted from the LED light source 28 of the LED unit 32 attached to the plate surface of the side surface portion 36 b is oriented along the plate surface of the bottom plate 22 a of the chassis 22. (See FIG. 3).

The reflection sheet 26 has a rectangular shape, is made of a synthetic resin, has a reflective surface 26a, and has a white surface excellent in light reflectivity, and is placed on the front side of the bottom plate 22a of the chassis 22. ing. Further, the reflection sheet 26 has a three-dimensional shape in which a part of the reflection sheet 26 has a convex shape protruding in the front side direction in the cross-sectional view of the cross-sectional configuration shown in FIG. The convex portion 26b has a curved surface shape in a sectional view, and the gradient thereof becomes steeper toward the diffusion plate 20 side (the front side of the chassis 22). The convex portion 26b is provided at the center position 20a1 of the two opposing side plates 22b. By forming such a three-dimensional shape, the reflection sheet 26 can reflect the light emitted from the LED light source 28 to the diffusion plate 20 side by the reflection surface 26a (see the one-dot chain line in FIG. 3). ). In addition, the reflection sheet 26 is comprised with the shaping reflection sheet, and becomes the structure by which the solid shape is maintained even if it does not support the convex site | part 26b with other members, such as a support pin.

Next, the configuration of the optical member 34 that is a main part of the present embodiment will be described in detail. As shown in FIG. 3, the optical member 34 includes an extending portion 34a and an attaching portion 34b. The mounting portion 34b has a plate shape, and its plate surface comes into contact with the outer surface of the side plate 22b of the chassis 22 (the surface opposite to the side contacting the side surface portion 36b of the mounting plate 36). And is sandwiched between the side plate 22 b and the frame 14. The extending portion 34 a has a plate-like shape that tapers from the upper end edge of the mounting portion 34 b toward the tip so that a part of the extending portion 34 a contacts the upper end surface of the side plate 22 b of the chassis 22. It extends toward the center of the bottom plate of the chassis 22 (the center position 20a1 of the two opposing side plates 22b) so as to be parallel to the plate surface of the bottom plate 22a.

As shown in FIG. 3, the extended portion 34a of the optical member 34 reaches the inside of the display area 16a of the liquid crystal panel 16 and overlaps the edge of the display surface. The extending portion 34a is formed of a material that transmits a part of incident light and reflects a part thereof. Specifically, the extension part 34a is made of polymethacrylic (PMMA) resin. For this reason, a part of the light emitted from the LED light source 28 and traveling directly above the LED light source 28 (on the opposite side to the bottom plate 22a, the front side) passes through the extending portion 34a and enters the back surface of the diffusion plate 20. A part of the light is reflected toward the reflection sheet 26 by the extending part 34a (see the one-dot chain line in FIG. 3). The light reflected toward the reflection sheet 26 is reflected again by the reflection surface 26a of the reflection sheet 26, and enters the position on the back surface of the diffusion plate 20 that overlaps with the vicinity of the center of the display surface of the liquid crystal panel 15. It becomes. In this way, only a part of the light directed directly above the LED light source 28 enters the diffusion plate 20 without going through the reflection sheet 26, so that the light directed directly above the LED light source 28 Compared to the case where everything directly enters the diffuser plate 20, the portion directly above the LED light source 28 does not become excessively bright, and luminance unevenness on the display surface of the liquid crystal panel 16 is prevented or suppressed.

Further, as described above, the optical member 34 is disposed such that the attachment portion 34b is disposed on the outer side of the side plate 22b of the chassis 22 and the extending portion 34a is in contact with the upper end surface of the side plate 22b of the chassis 22. Therefore, it is not necessary to provide a space for arranging the optical member 34 in the chassis 22. For this reason, the configuration of the backlight device 24 can be reduced.

As described above, in the backlight device 24 according to the present embodiment, a part of the light emitted from the LED light source 28 that is directed directly above the LED light source 28 (on the side opposite to the bottom plate 22a) is partially reflected by the optical member 34. Is reflected on the reflection sheet 26 side, so that the portion directly above the LED light source 28 does not become excessively bright. Furthermore, since the optical member 34 transmits a part of the incident light, it may be disposed so as to overlap the display surface of the liquid crystal panel 16, and therefore may be disposed outside the chassis 22. No space is required near the side plate 22b. For this reason, in the backlight device 24 of the type that directly reflects the light from the LED light source 28 in the direction of the display surface without passing through a light guide plate or the like, the luminance unevenness on the display surface of the liquid crystal panel 16 can be reduced while enabling a narrow frame. It can be prevented or suppressed.

In the backlight device 24 according to the present embodiment, the optical member 34 is attached to the side 22b plate of the chassis 22 and the center of the bottom plate 22a is parallel to the bottom plate 22a from the edge of the mounting portion 34b. And an extending portion 34a extending toward the front. Furthermore, the optical member 34 is formed of an acrylic resin. For this reason, a specific configuration of the optical member 34 is realized.

In the backlight device 24 according to the present embodiment, the LED substrate 30 having a plurality of LED light sources 28 disposed on the surface, the LED substrate 30 disposed on one plate surface, and a part of the LED substrate 30 on the bottom plate 22a. And a mounting plate 36 attached thereto. For this reason, the specific structure for attaching the LED light source 28 to the side plate 22b side is realized.

Further, in the backlight device 24 according to the present embodiment, the mounting plate 36 is a heat radiating plate having higher heat dissipation than the bottom plate 22a. For this reason, the heat generated from the LED light source 28 can be effectively radiated to the outside by the mounting plate 36.

Further, in the backlight device 24 according to the present embodiment, the LED light sources 28 are arranged on the two side plates 22b facing each other. And the convex part 26b of the reflective sheet 26 is provided at the center position 20a of the two side plates 22b facing each other. For this reason, the light emitted from the LED light sources 28 on both sides can be reflected almost uniformly to the diffuser plate 20 side by the reflection sheet 26, and the luminance unevenness of the display surface of the liquid crystal panel 16 can be further prevented or suppressed. .

In addition, the backlight device 24 according to the present embodiment further includes a diffusion plate 20 disposed on the leading end side of the side plate 22b. For this reason, the unevenness of reflected light can be reduced by the diffusion plate 20.

In the backlight device 24 according to the present embodiment, the reflection surface 26a of the reflection sheet 26 is white. For this reason, the reflection efficiency of the reflection sheet 26 can be improved.

<Embodiment 2>
A second embodiment will be described with reference to the drawings. FIG. 4 is a cross-sectional view of the liquid crystal display device 110 according to the second embodiment and shows a cross-sectional configuration corresponding to FIG. 3 of the first embodiment. In the second embodiment, the shape of the reflection surface 126a of the reflection sheet 126 is different from that of the first embodiment. Since the other configuration is the same as that of the first embodiment, the description of the structure, operation, and effect is omitted. In FIG. 4, the part obtained by adding the numeral 100 to the reference sign in FIG. 3 is the same as the part described in the first embodiment.

In the liquid crystal display device 110 according to the second embodiment, as shown in FIG. 4, the reflection surface 126 a of the reflection sheet 126 is flat, and has a mountain shape in a cross-sectional view in FIG. 4. And the apex of the reflective surface 126a which forms a mountain shape is a convex part 126b. Even with such a configuration, the light emitted from the LED unit 132 can be effectively reflected to the diffusion plate 120 side by the reflection surface 126 a of the reflection sheet 126. Since the optical member 134 has the same configuration as in the first embodiment, the liquid crystal display device 110 can prevent or suppress luminance unevenness on the display surface of the liquid crystal panel 116 while enabling a narrow frame. .

<Embodiment 3>
Embodiment 3 will be described with reference to the drawings. FIG. 5 is a cross-sectional view of the liquid crystal display device 210 according to the third embodiment, and shows a cross-sectional configuration corresponding to FIG. 3 of the first embodiment. The third embodiment is different from the first embodiment in that the support pins 240 are arranged. Since the other configuration is the same as that of the first embodiment, the description of the structure, operation, and effect is omitted. In FIG. 5, the part obtained by adding the numeral 200 to the reference sign in FIG. 3 is the same as the part described in the first embodiment.

In the liquid crystal display device 210 according to the third embodiment, as illustrated in FIG. 5, the support pin 240 is disposed in the convex portion of the reflection sheet 226 so as to penetrate the portion. The support pin 240 includes a conical contact portion 240a and a shaft-shaped through portion 240b. Among these, the contact portion 240a is arranged on the front side of the convex portion 226b of the reflection sheet 226, and the tip thereof contacts the back surface 220a of the diffusion plate 220 to support a part of the diffusion plate 220, and The bottom surface is in contact with the convex portion 726b of the reflection sheet 226. The penetrating portion 240b is fixed to the bottom plate 222a by connecting one end of the penetrating portion 240b to the contact portion 240a and penetrating the other end of the penetrating portion 240b through the chassis 222 and fastening the tip to the back surface of the bottom plate 222a of the chassis 222. Yes. In the liquid crystal display device 210, by providing such support pins 240, the convex portion 226b of the reflection sheet 226 can be supported, and the diffusion plate 220 can be effectively supported.

The correspondence between the configuration of each embodiment and the configuration of the present invention is described. The

bottom plates

22a, 122a, 222a, 322a, 422a, 522a, 622a, and 722a are examples of the “plate portion”. The

LED light sources

28, 128, 228, 328, 428, 528, 628, and 728 are examples of the “light source”. Further, the

backlight devices

24, 124, 224, 324, 424, 524, 624, and 724 are examples of the “illumination device”. Further, the

LED substrates

30, 130, 230, 330, 430, 530, 630, and 730 are examples of the “light source substrate”. Further, the liquid

crystal display devices

10, 110, 210, 310, 410, 510, 610, and 710 are examples of the “display device”.

The modifications of the above embodiments are listed below.
(1) In each of the above embodiments, an example in which the optical member is configured by the extending portion and the attachment portion has been shown, but the structure, shape, arrangement, number, and the like of the optical member are not limited. It can be changed as appropriate.

(2) In each of the above embodiments, the configuration in which the optical member is formed of a polymethacrylic resin is exemplified, but the material of the optical member is not limited. As another material of the optical member, for example, methyl methacrylate styrene (MS) resin or polystyrene (PS) resin can be used.

(3) In each of the above-described embodiments, the diffusion plate is arranged on the back side of the optical sheet, and the configuration in which the light reflected by the reflection sheet enters the diffusion plate is illustrated. However, the configuration does not include the diffusion plate. Also good. In this case, the structure in which the light reflected by the reflective sheet directly enters the optical sheet group may be used.

(4) In each of the above embodiments, the configuration in which the convex portion of the reflection sheet is provided at the center position of the opposing side plate is exemplified, but the position of the convex portion is not limited.

(5) In each of the above embodiments, the configuration in which the LED units are arranged in the both long side directions of the bottom plate of the chassis is exemplified, but the number of LED units arranged and provided is not limited. For example, the LED unit may be arranged only on one side of the bottom plate of the chassis, or the four LED units may be arranged on all sides of the bottom plate of the chassis.

(6) In addition to the above embodiments, the shape and arrangement of the LED light source, LED substrate, and mounting plate can be changed as appropriate.

(7) In addition to the above embodiments, the shape and the like of the reflection sheet can be changed as appropriate.

(8) In each of the above embodiments, a liquid crystal display device using a liquid crystal panel as the display panel has been exemplified. However, the present invention can be applied to a display device using another type of display panel.

(9) In each of the above embodiments, the television receiver provided with a tuner has been exemplified. However, the present invention can also be applied to a display device that does not include a tuner.

As mentioned above, although each embodiment of this invention was described in detail, these are only illustrations and do not limit a claim. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.

Further, the technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology exemplified in this specification or the drawings can achieve a plurality of objects at the same time, and has technical usefulness by achieving one of the objects.

TV: TV receiver, Ca, Cb: cabinet, T: tuner, S: stand, 10, 110, 210: liquid crystal display, 12, 112, 212: bezel, 14, 114, 214: frame, 16, 116, 216: Liquid crystal panel, 18, 118, 218: Optical sheet group, 20, 120, 220: Diffuser plate, 22, 122, 222: Chassis, 24, 124, 224: Backlight device, 26, 126, 226:

Reflective sheet

28, 128, 228: LED light source, 30, 130, 230: LED substrate, 32, 132, 232: LED unit, 34, 134, 234: optical member, 36, 136, 236: mounting plate, L: optical axis

Claims

A chassis having a plate-like portion and a side plate portion rising from the plate surface of the plate-like portion to one surface side of the plate-like portion;
A light source mounted on the side plate portion side so as to emit light having directivity on the one surface side of the plate-like portion and so that the optical axis of the light is along the plate surface of the plate-like portion. When,
It is arranged on the one surface side of the plate-like portion, and a part of the plate-like portion protrudes toward the rising direction of the side plate portion, and reflects light from the light source in the rising direction of the side plate portion. A reflective sheet to
An optical member that is disposed on the opposite side of the plate-like part across the light source, transmits a part of incident light, and reflects a part thereof;
A lighting device comprising:
The optical member includes a mounting portion that is attached to a side plate of the chassis, and an extending portion that extends from an edge of the mounting portion toward the center of the plate-like portion in parallel with the plate-like portion. The lighting device according to claim 1 or claim 1, wherein
The lighting device according to claim 1 or 2, wherein the optical member is made of an acrylic resin.
A light source substrate having a plurality of light sources arranged on one plate surface;
The said light source board | substrate is distribute | arranged to one board surface, The attachment plate in which one part was attached to the said plate-shaped part is further provided, The any one of Claims 1-3 characterized by the above-mentioned. The lighting device described in 1.
The lighting device according to claim 4, wherein the mounting plate is a heat radiating plate having higher heat dissipation than the plate-shaped portion.
The light sources are arranged on the two opposing side plates,
The lighting device according to any one of claims 1 to 5, wherein the convex portion of the reflection sheet is provided at a center position of the two opposing side plates.
The lighting device according to any one of claims 1 to 6, further comprising a diffusion plate disposed on a rising tip side of the side plate.
The support sheet further includes a support pin that passes through the convex portion of the reflection sheet and the plate-like portion of the chassis, and has a tip abutting against the diffusion plate to support the diffusion plate. 8. The lighting device according to 7.
The lighting device according to any one of claims 1 to 8, wherein the reflecting surface of the reflecting sheet is white.
A display device comprising a display panel that performs display using light from the illumination device according to any one of claims 1 to 9.
The display device according to claim 10, wherein the display panel is a liquid crystal panel using liquid crystal.
The display panel has a display area capable of displaying a screen, and a display peripheral area located around the display area,
The illumination device according to claim 10 or 11, wherein the optical member is arranged so that a tip of the optical member reaches the display area.
A television receiver comprising the display device according to any one of claims 10 to 13.