JP2017045533A - Lighting device, display device, and television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device, a display device, and a television receiver capable of standardizing storage bodies for storing light source substrates.SOLUTION: A plurality of through holes 4 are provided on storage bodies 35. Shapes and dimensions of the through holes 4 which function as positioning parts for substrates concerning light source substrates 33 and the through holes 4 which function as positioning parts for other members concerning fixation members 38 are standardized. Consequently, for example, when the number or arrangement positions of the light source substrates 33 are changed, a manufacturer changes the number or arrangement positions of the fixation members 38. Then, the manufacturer appropriates one of the positioning parts for the substrate and the positioning parts for other members as the other. Consequently, when a lighting device with different number or arrangement positions of the light source substrates 33 is manufactured, it is unnecessary to individually prepare the storage bodies 35 with different number or arrangement positions of the positioning parts for the substrate. In other word, the storage bodies 35 can be standardized among the lighting devices with the different number or arrangement positions of the light source substrates 33.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an illumination device, a display device, and a television receiver in which a plurality of light source substrates are juxtaposed.

The liquid crystal display device includes a liquid crystal display panel and an illumination device having a plurality of LEDs (light emitting diodes). The illumination device illuminates the liquid crystal display panel from the back side.
In the direct illumination device, a plurality of LEDs are juxtaposed facing the back surface of the liquid crystal display panel (see Patent Document 1).

  In the case of the illumination device described in Patent Document 1, each LED is mounted on an LED substrate and is covered with a diffusion lens that diffuses light emitted from the LED. The LED substrate is attached to a chassis (“support member” in the text). The diffusing lens is provided with a positioning part and an engaging part, and the LED board and the chassis are provided with a positioning hole and an engaging hole. The diffusing lens is positioned by engaging the positioning portion with the positioning hole, and is attached to the LED substrate and the chassis by engaging the engaging portion with the engaging hole.

JP2013-242499A

  When the lighting device includes a plurality of LED substrates, it is conceivable that each LED substrate is provided with a positioning portion serving as an engaging portion, and the chassis is provided with a positioning hole serving as an engaging hole. Each LED board is positioned and attached to the chassis by the positioning portion engaging with the positioning hole.

  By the way, in order to uniformly illuminate the display panel, it is desirable that the plurality of LED substrates are arranged in parallel. However, since the number of LED substrates and the arrangement position are defined by the number of positioning holes and the arrangement position, there is a case where the housing cannot be shared between lighting devices having different numbers or arrangements of the light source substrates. . In this case, it is necessary to prepare chassis having different numbers and positioning positions of positioning holes for each lighting device having a different number or arrangement of light source substrates.

  The present invention has been made in view of such circumstances, and a main object thereof is to provide an illumination device, a display device, and a television receiver capable of sharing a housing for housing a light source substrate. It is in.

  The lighting device according to the present invention includes a dish-shaped container and a plurality of light source substrates each having a light source mounted on one surface thereof and arranged in parallel at least in one row on the inner surface of the bottom wall of the container. And a member other than the light source substrate accommodated in the container, wherein the bottom wall has a plurality of substrate positioning portions for positioning the light source substrate and positioning of the other members. A plurality of other member positioning portions are provided, and the shapes and dimensions of the substrate positioning portion and the other member positioning portions are made common.

  In the illumination device according to the present invention, each of the substrate positioning portion and the other member positioning portion is concave or convex with respect to the inner surface, and each light source substrate is engaged with one of the substrate positioning portions. The other member is engaged with any one of the other member positioning portions.

  The illuminating device according to the present invention further includes a diffusing plate that is disposed to face the light source and diffuses light emitted from the light source, and the other member is a support member that supports the diffusing plate.

  The illumination device according to the present invention further includes a reflection sheet that covers the one surface and the inner surface of the container and reflects light, and the other member is a fixing member that fixes the reflection sheet to the bottom wall. Features.

  In the illumination device according to the present invention, the number Y of the light source substrates included in one row is in accordance with the following formula (1) including constants A, X1, and X2, and the constant A is “7”, “9”, “13”. , “16”, “17”, “19”, the constant X1 is any one of “1,” “2,” and “3”, and the constant X2 is “-2”, “- Any one of “1”, “0”, “1”, “2”, “3”, and the combination of the constants A, X1, and X2 is such that the calculation result of Equation (1) is a natural number with Y ≧ 3 It is characterized by

  In the lighting device according to the present invention, the number of the light source substrates is 3, 4, 5, 6, 7, 9, 10, 11, 13, 16, 17, 17, 19 21 sheets, 25 sheets, 31 sheets, 33 sheets, 37 sheets, 41 sheets, or 49 sheets.

  A display device according to the present invention includes the illumination device according to the present invention and a display panel illuminated from the back side by the illumination device.

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

  In the case of the illumination device, the display device, and the television receiver according to the present invention, since the shape and dimensions of the substrate positioning portion and the other member positioning portion are made common, the substrate positioning portion and the other member positioning portion. One of these can be used as the other. Therefore, when manufacturing lighting devices having different numbers of light source substrates or arrangement positions, it is not necessary to separately prepare containers having different numbers or arrangement positions of substrate positioning portions. In other words, the container can be shared between lighting devices having different numbers of light source substrates or different arrangement positions.

It is sectional drawing which shows schematically the structure of a television receiver provided with the display apparatus which concerns on Embodiment 1 of this invention. It is a front view which briefly shows the structure of the illuminating device with which a display apparatus is provided. It is a front view which briefly shows the structure of the container which an illuminating device has. It is sectional drawing which shows schematically the positioning state of the light source board | substrate and reflection sheet with respect to a container. It is a front view which shows schematically arrangement (upper and lower 10 juxtaposition) of a light source board in a container. It is a front view which shows schematically arrangement | positioning (upper and lower 13 parallel arrangement) of a light source board | substrate. It is sectional drawing which shows schematically the structure of a television receiver provided with the display apparatus which concerns on Embodiment 2 of this invention. It is sectional drawing which shows schematically the positioning state of a light source substrate and a reflective sheet. It is a front view which shows typically arrangement | positioning (upper and lower 19 sheets juxtaposition) of a light source board | substrate. It is a front view which shows typically arrangement | positioning (13 upper and lower sides juxtaposition) of a light source board | substrate. It is a front view which shows typically arrangement | positioning (upper and lower 10 arrangement | positioning) of a light source board | substrate. It is a front view which shows typically arrangement | positioning (upper and lower 7 sheets juxtaposition) of a light source board | substrate. It is a front view which shows typically arrangement | positioning (upper and lower 4 sheets juxtaposition) of a light source board | substrate. It is a front view which shows typically arrangement | positioning (upper and lower 3 parallel arrangement) of a light source board | substrate. It is sectional drawing which shows schematically the positioning state of the light source board | substrate with respect to the container with which the display apparatus which concerns on Embodiment 3 of this invention is provided. It is sectional drawing which shows schematically the positioning state of the light source board | substrate with respect to the container with which the display apparatus which concerns on Embodiment 4 of this invention is provided. It is sectional drawing which shows schematically the positioning state of the light source board | substrate with respect to the container with which the display apparatus which concerns on Embodiment 5 of this invention is provided.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. In the following description, up and down, front and rear, and left and right indicated by arrows in the figure are used.

(Embodiment 1.)
FIG. 1 is a cross-sectional view schematically showing a configuration of a television receiver 1 including a display device 13 according to Embodiment 1 of the present invention.
FIG. 2 is a front view schematically showing the configuration of the illumination device 22 included in the display device 13.
FIG. 3 is a front view schematically showing the configuration of the container 35 included in the lighting device 22.
FIG. 4 is a cross-sectional view schematically showing a positioning state of the light source substrate 33 and the reflection sheet 36 with respect to the container 35.
5 and 6 are front views schematically showing the arrangement of the light source substrate 33 in the container 35. FIG.
2, 3, 5, and 6, the vertical and horizontal directions are the vertical and horizontal directions of the lighting device 22.

The television receiver 1 is a stationary type or a wall-mounted type. The television receiver 1 includes a receiving unit 11, a signal processing unit 12, and a display device 13.
The receiving unit 11 is a circuit board on which a not-shown receiving circuit is mounted. The receiving circuit receives a television broadcast from the outside via an antenna (not shown) and outputs a broadcast signal based on the received television broadcast.
The signal processing unit 12 is a circuit board on which a signal processing circuit (not shown) is mounted. The signal processing circuit outputs video data by performing predetermined signal processing on the broadcast signal output from the receiving unit 11.

  The display device 13 has a rectangular shape when viewed from the front. The display device 13 includes a display panel 21 and a lighting device 22 and a cabinet (not shown) that houses them. The cabinet also houses a receiving unit 11 and a signal processing unit 12. The receiving unit 11 and the signal processing unit 12 may be externally attached to the display device 13.

  The display panel 21 is a rectangular plate-shaped liquid crystal display panel. The display panel 21 includes a rectangular display area and a rectangular frame-shaped frame area surrounding the display area. The display area (and the frame area) is located at the center (and peripheral edge) of the display panel 21. In the display area of the display panel 21, an image based on the image data output from the signal processing unit 12 is displayed.

The illumination device 22 includes an optical sheet group 30, a diffusion plate 31, a spacer 32, a plurality of light source substrates 33, a plurality of light sources 34, a container 35, a reflection sheet 36, and a plurality of rivets 37, 37,. The fixing members 38 are provided. In FIG. 2, the optical sheet group 30, the diffusion plate 31, the spacer 32, and the reflection sheet 36 are not shown.
The optical sheet group 30 is formed by laminating a plurality of optical sheets each having optical transparency. Each optical sheet has a light diffusing function, a light collecting function, a polarizing function, or the like. The optical sheet group 30 has a rectangular shape with a larger area than the display area of the display panel 21. The optical sheet group 30 is disposed facing the rear surface of the display area of the display panel 21 with an appropriate distance.

  The diffusing plate 31 diffuses the light that has passed through it. The light transmittance of the diffusion plate 31 is about 50%. A part of the light incident on the rear surface of the diffusion plate 31 is transmitted through the diffusion plate 31, diffused from the front surface of the diffusion plate 31, and emitted. Another part of the light incident on the rear surface of the diffusion plate 31 is reflected to the rear side. The diffusion plate 31 has a rectangular shape with a larger area than the optical sheet group 30. The diffusing plate 31 is disposed facing the rear surface of the optical sheet group 30 with an appropriate distance.

  The spacer 32 has a frame shape and has a buffering property. The spacer 32 is interposed between the rear peripheral edge of the optical sheet group 30 and the front peripheral edge of the diffusion plate 31. The arrangement position of the spacer 32 is a position facing the frame area of the display panel 21.

Each light source substrate 33 is formed in a strip shape, and the width direction is along the vertical direction, the length direction is along the left-right direction, and the front surface 33 a is arranged so as to face the rear surface of the diffusion plate 31.
A plurality of light source substrates 33 are juxtaposed at equal intervals in the vertical direction.
FIG. 2 shows a case in which 20 light source substrates 33 are juxtaposed at equal intervals in the up-down direction and two are juxtaposed in the left-right direction. In other words, the light source substrates 33 are juxtaposed in two rows of 10 at regular intervals. The light source substrate 33 may be one row or three or more rows. Further, the number of juxtaposed in the vertical direction is not limited to ten.
FIG. 5 shows the arrangement of ten light source substrates 33, and FIG. 6 shows the arrangement of 13 light source substrates 33.
The two light source substrates 33, 33 adjacent in the left-right direction are arranged so that the end portions in the length direction (short side portions) face each other. The two light source substrates 33, 33 adjacent to each other in the vertical direction are arranged so that the end portions in the width direction (long side portions) face each other.

A plurality of light sources 34 are mounted on the front surface 33 a of the light source substrate 33. FIG. 2 illustrates a case where 18 light sources 34 are equally arranged.
Each light source 34 includes a light emitting unit and a lens. The light emitting unit uses an LED and is mounted on the front surface 33 a of the light source substrate 33. The lens covers the light emitting unit and is attached to the light source substrate 33. The light emitted from the light emitting part passes through the inside of the lens, diffuses and exits from the surface of the lens.
In the light source substrate 33, a plurality of through holes 331, 331,. Below, the case where the number of the through-holes 331,331, ... is five is illustrated. Each through hole 331 is arranged in a non-mounting portion of the light source 34. Each of the through holes 331, 331,... Has a circular shape when viewed from the front, and has the same inner diameter.

The container 35 has a dish shape having a bottom wall 351, a peripheral wall 352, and a support portion 353. The container 35 houses the light source substrate 33, the reflection sheet 36, and the like.
The bottom wall 351 has a rectangular shape with a smaller area than the diffusion plate 31. The peripheral wall 352 protrudes perpendicularly to the peripheral edge of the bottom wall 351. A support portion 353 is disposed at the boundary between the bottom wall 351 and the peripheral wall 352. The support portion 353 has a rectangular frame shape with a right-angled triangular cross section, surfaces corresponding to two adjacent sides of the triangle abut against the bottom wall 351 and the peripheral wall 352, and a surface corresponding to the oblique side faces the diffusion plate 31 side. ing.

On the inner surface (front surface) of the bottom wall 351, the light source substrates 33 are juxtaposed with their rear surfaces facing the bottom wall 351.
The receiving unit 11 and the signal processing unit 12 are attached to the rear surface of the bottom wall 351.
The center part in the front-rear direction of the peripheral wall 352 and the front end part of the support part 353 support the peripheral part of the diffusion plate 31.
The opening of the container 35 is closed by the display panel 21. For this reason, the front end of the peripheral wall 352 supports the peripheral edge of the display panel 21.

The bottom wall 351 is provided with a plurality of through holes 4, 4,.
The through hole 4 is concave with respect to the inner surface of the bottom wall 351.
There are 19 through holes 4, 4,... In the vertical direction and are arranged in parallel at non-uniform intervals. Ten through holes 4, 4,... Are arranged in parallel in the left-right direction. Of the ten through holes 4, 4,... In the left-right direction, five positions on the left side (and right side) of the two light source boards 33, 33 juxtaposed in the left-right direction are on the left side (and This corresponds to the arrangement position of the through holes 331, 331,... Provided in the light source substrate 33 on the right side). Each of the through holes 4, 4,... Has a circular shape when viewed from the front and has the same inner diameter.

  In the present embodiment, the nineteen through holes 4, 4,... Juxtaposed in the vertical direction are arranged in a straight line, but the present invention is not limited to this, and some of the through holes 4, 4,. It may be displaced in the direction. Further, in the present embodiment, some of the ten through holes 4, 4,... Juxtaposed in the left-right direction are displaced in the left-right direction. However, the present invention is not limited to this, and is arranged in a straight line. May be. The arrangement positions of the through holes 4, 4,... Are designed in consideration of the arrangement positions of components (such as the light source 34 or a connector (not shown)) mounted on the light source board 33, for example.

  In the following, when two of the through holes 4, 4,... Arranged in the left-right direction are distinguished from each other, the reference numerals 41, 42 are used to distinguish between the through holes 4, 4,. In addition to symbols 41 and 42, symbols a, b, c, d, e, f, g, h, j, k, m, n, p, q, r, s, t, u and v are used (see FIGS. 5 and 6).

The reflection sheet 36 has light reflectivity. The reflection sheet 36 covers the front surface 33a of each light source substrate 33 and the inner surface of the container 35 (specifically, the inner surface of the bottom wall 351 and the support portion 353). However, the light source 34 is not covered. For this purpose, openings are provided in portions corresponding to the light sources 34 in the reflection sheet 36. In addition, a portion of the inner surface of the container 35 that is positioned in front of the diffusion plate 31 is not covered with the reflection sheet 36.
The reflective sheet 36 is provided with a plurality of through holes 361, 361,. 19 through holes 361, 361,... Are arranged in parallel in the vertical direction at non-uniform intervals. Further, ten through holes 361, 361,... Are arranged in parallel in the left-right direction. The arrangement positions of the through holes 361, 361, ... in the vertical and horizontal directions correspond to the arrangement positions of the through holes 4, 4, ....
Each of the through holes 361, 361,... Has a circular shape when viewed from the front, and has the same inner diameter.
The inner diameters of the through holes 331, 361, 4 are equal to each other.

Each rivet 37 has a head portion 37a and a leg portion 37b. However, some rivets 37, 37,... Have a head portion 37a, leg portions 37b, and support protrusions 37c. Hereinafter, when the rivet 37 having only the head portion 37a and the leg portion 37b is distinguished from the rivet 37 having the support protrusion 37c, the former is referred to as an engagement rivet 371 and the latter is referred to as a support rivet 372.
The rivets 37 are arranged with the head portion 37a facing the front side and the leg portions 37b facing the rear side.
The head 37a has a disk shape having light reflectivity (for example, white).

The leg portion 37b has a cylindrical shape protruding from the rear surface of the head portion 37a, and the tip portion has a split pin shape. The leg portion 37b passes through the through holes 361, 331, and 4 in this order from the front side. After passing through the through holes 361, 331, and 4, the tip portion of the leg portion 37 b protrudes to the rear side of the bottom wall 351 and is locked to the rear surface of the bottom wall 351. At this time, the reflection sheet 36 and the light source substrate 33 are sandwiched between the rear surface of the head 37a and the inner surface of the bottom wall 351.
That is, the light source substrate 33 is engaged with the through hole 4 via the rivet 37. Since the light source substrate 33 is positioned by engagement with the through hole 4, the through hole 4 with which the light source substrate 33 is engaged functions as a substrate positioning portion.

The support protrusion 37c protrudes from the front surface of the head portion 37a and has a conical shape having light reflectivity. The tip of the support protrusion 37 c contacts the rear surface of the diffusion plate 31. As a result, the support rivet 372 functions as a spacer between the diffusing plate 31 and the bottom wall 351, so that the diffusing plate 31 is prevented from being bent rearward. That is, the support rivet 372 has a function of engaging the light source substrate 33 with the through hole 4 and a function of supporting the diffusion plate 31.
The engagement rivet 371 may be covered with the reflection sheet 36. In this case, the engagement rivet 371 passes through the through holes 331 and 4 in this order, and the through hole 361 through which the engagement rivet 371 should pass is not provided in the reflective sheet 36. At this time, the light source substrate 33 is sandwiched between the rear surface of the head portion 37a and the inner surface of the bottom wall 351. The head 37a of the engagement rivet 371 covered with the reflection sheet 36 does not need to have light reflectivity.

Each fixing member 38 has a rivet shape having a head portion 38a and a leg portion 38b. The fixing member 38 is arranged with the head portion 38a facing the front side and the leg portion 38b facing the rear side.
The head 38a has a disk shape having light reflectivity (for example, white).
The leg portion 38b has a cylindrical shape protruding from the rear surface of the head portion 38a, and the tip portion has a split pin shape. The leg part 38b penetrates the through holes 361 and 4 in this order from the front side. The tip portion of the leg portion 38 b is locked to the outer surface of the bottom wall 351 in the same manner as the tip portion of the leg portion 37 b of the rivet 37. At this time, the fixing member 38 engages with the through holes 361 and 4, and the reflection sheet 36 is sandwiched between the rear surface of the head 38 a and the inner surface of the bottom wall 351.
The fixing member 38 is a member other than the light source substrate 33 accommodated in the accommodating body 35, and fixes the reflection sheet 36 to the bottom wall 351. Since the fixing member 38 is positioned by the engagement with the through hole 4, the through hole 4 with which the fixing member 38 is engaged functions as a positioning portion for other members.

  That is, the bottom wall 351 of the container 35 is provided with a plurality of substrate positioning portions for positioning the light source substrate 33 and a plurality of other member positioning portions for positioning the fixing members 38, 38,. The shape and size of each of the substrate positioning portion and the other member positioning portion are made common.

  As can be seen from FIG. 2, FIG. 3, FIG. 5, and FIG. 6, when the number of light source substrates 33 adjacent in the vertical direction (the number of one row) is 10, The case 35 is shared.

As shown in FIG. 5, when the number of the light source substrates 33 is 10, the distance between the light source substrates 33 and 33 adjacent in the vertical direction is constant at the distance L1. Among the nineteen through holes 41, 41,... In the vertical direction, ten of the through holes 41a, 41c, 41e, 41g, 41j, 41m, 41p, 41r, 41t, 41v are rivets 37, 37,. The rivet 37 is engaged with an engagement rivet 371) and functions as a substrate positioning portion.
Similarly, of the 19 through holes 42, 42,... In the vertical direction, 10 of the through holes 42a, 42c, 42e, 42g, 42j, 42m, 42p, 42r, 42t, 42v are rivets 37, 37,. Each rivet 37 is engaged with one of an engagement rivet 371 and a support rivet 372), and functions as a substrate positioning portion.

On the other hand, a through hole 41b between the through holes 41a and 41c, a through hole 41d between the through holes 41c and 41e, a through hole 41f between the through holes 41e and 41g, a through hole 41h between the through holes 41g and 41j, and a through hole 41j , 41m, through-hole 41k, through-hole 41n between through-holes 41m, 41p, through-hole 41q between through-holes 41p, 41r, through-hole 41s between through-holes 41r, 41t, and between through-holes 41t, 41v Nine holes 41u are engaged with fixing members 38, 38,... (Omitted in FIG. 5), and function as positioning members for other members.
Similarly, nine of the through holes 42b, 42d, 42f, 42h, 42k, 42n, 42q, 42s, 42u are engaged with the fixing members 38, 38,... And function as positioning members for other members. .

  As shown in FIG. 6, when the number of the light source substrates 33 is 13, the distance between the light source substrates 33, 33 adjacent in the vertical direction is constant at a distance L2 (L2 <L1 and L2 × 4 = L1 × 3). is there. Of the nineteen through holes 41, 41,... In the vertical direction, thirteen of the through holes 41a, 41b, 41d, 41f, 41g, 41h, 41k, 41n, 41p, 41q, 41s, 41u, 41v , 37,... (Each rivet 37 is an engagement rivet 371) and functions as a substrate positioning portion.

  Similarly, 13 pieces of through holes 42a, 42b, 42d, 42f, 42g, 42h, 42k, 42n, 42p, 42q, 42s, 42u, and 42v are rivets among 19 through holes 42, 42,. 37, 37,... (Each rivet 37 is one of an engagement rivet 371 and a support rivet 372) and functions as a substrate positioning portion.

On the other hand, a through hole 41c between the through holes 41b and 41d, a through hole 41e between the through holes 41d and 41f, a through hole 41j between the through holes 41h and 41k, a through hole 41m between the through holes 41k and 41n, a through hole 41q, Six of the through holes 41r between 41s and the through holes 41t between the through holes 41s and 41u are engaged with fixing members 38, 38,... (Omitted in FIG. 6), and function as positioning members for other members. doing.
Similarly, six of the through holes 42c, 42e, 42j, 42m, 42r, 42t are engaged with the fixing members 38, 38,... And function as positioning members for other members.

Since the through-holes 4, 4,... Have the same shape and dimensions, each of the lighting devices 22, 22,... With a different number of light source substrates 33 (or when the number of light source substrates 33 is changed) The through hole 4 used as a positioning part for a substrate is used as a positioning part for another member (substrate positioning part), or the through hole 4 used as a positioning part for another member is used as a positioning part for a substrate You can do it.
For example, the through hole 41c is used as a substrate positioning portion when the number of light source substrates 33 is 10, but is used as a positioning portion for other members when the number of light source substrates 33 is 13. Yes. Further, for example, the through hole 41b is used as a positioning member for other members when the number of light source substrates 33 is 10, but is used as a positioning unit for substrates when the number of light source substrates 33 is 13. It has been.

As a result, the housings 35, 35,... Can be shared among the illuminating devices 22, 22,.
The illumination devices 22, 22,... With different numbers of light source substrates 33 have different luminances. When the number of light source substrates 33 in one row is 13, the number of the light sources 34 is larger and the density of the light sources 34 with respect to the bottom wall 351 is higher than that in the case of 10, so that the luminance of the lighting device 22 is high.
In other words, the containers 35, 35,... Can be shared among the lighting devices 22, 22,.

Next, determination of the number of light source substrates 33 when designing the illumination device 22 will be described.
The number Y of light source substrates 33 included in one row follows the following equation (2) including constants A, X1, and X2.

Here, the constant A is any one of “7”, “9”, “13”, “16”, “17”, “19”, and the constant X1 is “1”, “2”, “3”. The constant X2 is any one of “−2”, “−1”, “0”, “1”, “2”, and “3”.
The designer determines the constant A based on, for example, the specifications of the lighting device 22 (dimensions of the lighting device 22, brightness required for the lighting device 22, etc.), and the calculation result of Expression (2) is Y ≧ 3. Constants X1 and X2 are determined so as to be a natural number of.
The larger the size of the lighting device 22, the more light source substrates 33 can be arranged in one row. The higher the luminance required for the lighting device 22, the more light source substrates 33 need to be arranged in one row. is there.
In the case of the present embodiment, the combination (A, X1, X2, Y) of the constants A, X1, X2 and the number Y is (A, X1, X2, Y) = (19, 1, -1, 10) or (A, X1, X2, Y) = (19, 2, 0, 10) and (A, X1, X2, Y) = (19, 3, 1, 13).

  The number of sheets Y calculated according to equation (2) is 3, 4, 5, 6, 7, 9, 10, 11, 13, 16, 17, 19, 21, Any of 25, 31, 33, 37, 41, 49, 61, 65, 73, 97, 121, 129, and 145, but practically 3 4,4,5,6,7,9,10,11,13,16,17,19,21,25,31,33,37, Either 41 or 49 is desirable.

The arrangement positions of the through holes 4, 4,... In the vertical direction are determined according to a combination of a plurality of sheets Y, Y,... Obtained according to the equation (2) (10, 13 in this embodiment). .
If there is a combination of a plurality of numbers Y, Y,... Obtained according to the equation (2), there is no possibility that the through holes 4 and 4 adjacent in the vertical direction interfere with each other.
Here, the interference between the through holes 4 and 4 means that the through holes 4 and 4 adjacent in the vertical direction are too close to each other, or the through holes 4 and 4 adjacent in the vertical direction are partially overlapped. That is. When the adjacent through holes 4 and 4 are too close, the strength of the bottom wall 351 located between the through holes 4 and 4 may be reduced unnecessarily. When the through holes 4 and 4 adjacent in the vertical direction partially overlap, the rivet 37 or the fixing member 38 engaged with one through hole 4 moves to the other through hole 4 due to its own weight or impact. There is a risk of it.

  In the present embodiment, a case where all the through holes 4, 4,... Functioning as the board positioning portions function as the other member positioning portions related to the fixing members 38, 38,. Although illustrated, it is not limited to this. Some or all of the through holes 4, 4,... Other than the through holes 4, 4,. The structure which functions as a positioning part for other members may be sufficient. However, it is desirable that the through holes 4, 4,... Other than the through holes 4, 4,. This is because there is a possibility that foreign matter may enter the inside of the container 35 from the outside through the through hole 4 that is left open.

  Note that the substrate positioning portion and the other member positioning portion may be marks that are ruled, engraved, or printed on the bottom wall 351. However, the substrate positioning portion and the other member positioning portion using the mark can be used for positioning the light source substrate 33 or the fixing members 38, 38,..., But the light source substrate 33 or the fixing members 38, 38,. It cannot be used directly for attachment to the bottom wall 351. Therefore, the positioning portion for the substrate and the positioning portion for the other member can be engaged with the light source substrate 33 or the fixing members 38, 38,... (Specifically, they are concave or convex with respect to the inner surface of the bottom wall 351). (Configuration) is desirable.

Further, the substrate positioning portion (and the other member positioning portion) having a concave shape with respect to the inner surface of the bottom wall 351 is not limited to the through hole 4, and may be, for example, a half punch-shaped recess formed in the bottom wall 351. .
The light source substrate 33 may be provided with a protrusion instead of the through hole 331. In this case, the light source substrate 33 is positioned by the protrusions of the engagement substrate 33 engaging with the through holes 4 or the half punch-shaped recesses.
It is desirable that the other member positioned by the other member positioning portion is such that the change in the number or the arrangement position hardly affects the quality or the structure of the lighting device 22 like the fixing member 38.

  In the case of the illumination device 22 as described above, part of the light emitted from the light source 34 directly enters the diffuser plate 31 and passes through the diffuser plate 31. Further, another part of the light emitted from the light source 34 is repeatedly reflected between the diffusion plate 31 and the reflection sheet 36, the rivets 37, 37,... Or the fixing members 38, 38,. Incident light is transmitted through the diffusion plate 31. The light that has passed through the diffusion plate 31 passes through the optical sheet group 31. As a result, the illumination device 22 uniformly illuminates the display panel 21 from the back side.

In such an illuminating device 22, the light source substrates 33 being arranged at equal intervals contribute to the realization of uniform illumination of the display panel 21. If the light source substrates 33 are juxtaposed at unequal intervals, it is possible to more easily configure the illumination device 22 having a different number of light source substrates 33 while sharing the container 35, but the display panel 21 is uniform. This causes the problem that it is difficult to illuminate.
The juxtaposed direction of the light source substrates 33, 33,... In one row is not limited to the vertical direction, and may be the horizontal direction.
Further, the television receiver 1 is not limited to a configuration in which the front surface of the display panel 21 is facing forward (the display panel 21 is in a vertical posture), and may be downward (the display panel 21 is in a horizontal posture).

(Embodiment 2.)
FIG. 7 is a cross-sectional view schematically showing a configuration of the television receiver 1 including the display device 13 according to Embodiment 2 of the present invention. FIG. 8 is a cross-sectional view schematically showing the positioning state of the light source substrate 33 and the reflection sheet 36. 7 and 8 correspond to FIGS. 1 and 4 of the first embodiment.
9 to 14 are front views schematically showing the arrangement of the light source substrate 33. 9 to 14, the vertical and horizontal directions are the vertical and horizontal directions of the lighting device 22. Although the illustration of the light source substrate 33 is omitted in FIGS. 9 to 14, the vertical position of the through holes 4, 4,... Shown by the solid line corresponds to the vertical position of the light source substrate 33. .
The television receiver 1, the display device 13, and the lighting device 22 of the present embodiment have substantially the same configuration as that of the first embodiment. Hereinafter, differences from the first embodiment will be described, and other parts corresponding to those of the first embodiment are denoted by the same reference numerals and description thereof will be omitted.

In the first embodiment, the illuminating device 22 in which the accommodating bodies 35 and 35 are shared between the case where the number of the light source substrates 33 included in one row is 10 and the case where the number is 13 is illustrated. In the embodiment, the number of light source substrates 33 included in one row is 19 (see FIG. 9), 13 (see FIG. 10), 10 (see FIG. 11), and 7 cases. Illustrated is an illuminating device 22 in which the housings 35, 35,... Are shared between (see FIG. 12), four (see FIG. 13), and three (see FIG. 14).
The direction and arrangement interval of the light source substrate 33 are the same as those in the first embodiment.
The through holes 4, 4,... Are arranged in parallel at non-equal intervals in the vertical direction.

Further, in the present embodiment, the support member 39 is exemplified as being positioned by the other member positioning portion.
The support member 39 has the same configuration as the fixing member 38 of the first embodiment. That is, the support member 39 has a head portion 39a and a leg portion 39b, which have the same configuration as the head portion 38a and the leg portion 38b. Further, the support member 39 has a support protrusion 39c.
The support protrusion 39c has the same configuration as the support protrusion 37c of the support rivet 372, and protrudes from the head 39a.

In the first embodiment, the fixing members 38, 38,... Are engaged with the through holes 4, 4,... That are used as positioning parts for other members, but in the present embodiment, the support members 39, 39,. ... are engaged. Like the fixing members 38, 38,..., The change in the number or arrangement position of the support members 39 hardly affects the quality or structure of the lighting device 22.
As long as the diffusion plate 31 can be reliably supported only by the support members 39, 39,..., The rivets 37, 37,. If the instruction of the diffusion plate 31 is insufficient with only the support members 39, 39,..., Some or all of the rivets 37, 37,.
The other member engaged with the other member positioning portion may be the support member 39 alone, or the fixing member 38 and the support member 39 may be mixed.

When the number of the light source substrates 33 is 19, the distance between the light source substrates 33 and 33 adjacent in the vertical direction is constant at the distance L3 (see FIG. 9). Of the 25 through holes 4, 4,... In the vertical direction, 19 through holes 4, 4,... Indicated by solid lines function as the substrate positioning portions, and 6 through holes 4, 4 indicated by broken lines. ,... Function as positioning parts for other members.
On the other hand, when the number of the light source substrates 33 is 13, the distance between the light source substrates 33 and 33 adjacent in the vertical direction is constant at a distance L4 (L4> L3 and L4 × 2 = L3 × 3) (see FIG. 10). ). The thirteen through-holes 4, 4,... Shown by solid lines function as substrate positioning portions, and the twelve through-holes 4, 4,.

When the number of the light source substrates 33 is 10, the separation distance between the light source substrates 33 and 33 adjacent in the vertical direction is constant at a distance L5 (L5 = L3 × 2> L4) (see FIG. 11). The 10 through holes 4, 4,... Shown by the solid line function as the substrate positioning portions, and the 15 through holes 4, 4,.
When the number of the light source substrates 33 is 7, the distance between the light source substrates 33 and 33 adjacent in the vertical direction is constant at a distance L6 (L6 = L3 × 3) (see FIG. 12). In addition, the seven through holes 4, 4,... Shown by the solid lines function as substrate positioning portions, and the 18 through holes 4, 4,.

When the number of the light source substrates 33 is 4, the distance between the light source substrates 33 and 33 adjacent in the vertical direction is constant at a distance L7 (L7 = L3 × 6) (see FIG. 13). The four through holes 4, 4,... Shown by solid lines function as substrate positioning portions, and the 21 through holes 4, 4,... Shown by broken lines function as other member positioning portions.
When the number of the light source substrates 33 is three, the separation distance between the light source substrates 33 and 33 adjacent in the vertical direction is constant at a distance L8 (L8 = L3 × 9) (see FIG. 14). The three through holes 4, 4,... Shown by the solid lines function as substrate positioning portions, and the 22 through holes 4, 4,.

  The through holes 4, 4,... Of the present embodiment are arranged in parallel in the vertical direction at unequal intervals, but are not limited to this, and may be arranged in parallel at equal intervals. For example, when the through holes 4, 4,... Shown by broken lines in FIG. 9 do not exist, the 19 through holes 4, 4,. In this case, the container 35 can be shared among the illuminating devices 22, 22,... Having three, seven, ten, and thirteen light source substrates 33 in one row.

(Embodiment 3.)
FIG. 15 is a cross-sectional view schematically showing a positioning state of the light source substrate 33 with respect to the container 35 provided in the display device 13 according to Embodiment 3 of the present invention.
The television receiver 1, the display device 13, and the lighting device 22 of the present embodiment have substantially the same configuration as that of the first embodiment. Hereinafter, differences from the first embodiment will be described, and other parts corresponding to those of the first embodiment are denoted by the same reference numerals and description thereof will be omitted.

In the container 35 of the present embodiment, a half punch-like convex portion 51 is provided on the bottom wall 351 instead of the through hole 4. The convex portion 51 is a substrate positioning portion (or other member positioning portion) that is convex with respect to the inner surface of the bottom wall 351.
The light source substrate 33 is positioned by engaging the projection 51 used as the substrate positioning portion with the through hole 331 of the light source substrate 33.

(Embodiment 4.)
FIG. 16 is a cross-sectional view schematically showing a positioning state of the light source substrate 33 with respect to the container 35 included in the display device 13 according to Embodiment 4 of the present invention.
The television receiver 1, the display device 13, and the lighting device 22 of the present embodiment have substantially the same configuration as that of the first embodiment. Hereinafter, differences from the first embodiment will be described, and other parts corresponding to those of the first embodiment are denoted by the same reference numerals and description thereof will be omitted.

The light source substrate 33 of the present embodiment is not provided with the through hole 331.
In the container 35 of the present embodiment, a cut-and-raised convex portion 52 is provided on the bottom wall 351 instead of the through hole 4. The convex portion 52 is a substrate positioning portion (or other member positioning portion) that is convex with respect to the inner surface of the bottom wall 351. By providing the convex portion 52, an unnecessary through hole 53 is formed in the bottom wall 351.
The light source substrate 33 is positioned by the convex portion 52 used as the substrate positioning portion engaging with the peripheral portion of the light source substrate 33. At this time, the through hole 53 is closed by the light source substrate 33.

(Embodiment 5.)
FIG. 17 is a cross-sectional view schematically showing a positioning state of the light source substrate 33 with respect to the container 35 provided in the display device 13 according to Embodiment 5 of the present invention.
The television receiver 1, the display device 13, and the lighting device 22 of the present embodiment have substantially the same configuration as that of the first embodiment. Hereinafter, differences from the first embodiment will be described, and other parts corresponding to those of the first embodiment are denoted by the same reference numerals and description thereof will be omitted.

  The light source 34 includes a light emitting unit 341 and a lens 342. The front portion of the lens 342 has a hemispherical shape, and the top of the hemisphere has a concave shape. The light emitted from the lens 342 is more easily diffused than a lens in which the top of the hemisphere does not have a concave shape, such as the lens of the light source 34 of the first embodiment.

The container 35 has a dish shape, and includes a peripheral wall 354 and a flange 355 instead of the peripheral wall 352 and the support portion 353 of the first embodiment.
The peripheral wall 354 is inclined so as to extend from the bottom wall 351 to the opening side of the container 35.
The flange 355 is disposed at the front end (front end) of the peripheral wall 352 and supports the peripheral edge of the diffusion plate 31. Between the flange 355 and the peripheral edge of the diffusion plate 31, the peripheral edge of the reflection sheet 36 is sandwiched.

The illuminating device 22 according to the present embodiment includes rivets 6, 6,... Instead of the rivets 37, 37,.
A part of the rivets 6, 6,... Corresponds to the engagement rivets 371, 371,... Of the first embodiment, and the remaining rivets 6, 6,. Corresponds to.
Each rivet 6 has a rivet body 61 and a fastener 62.

The rivet body 61 of the rivet 6 corresponding to the engagement rivet 371 has a head portion 6a and a leg portion 6b.
The rivet body 61 of the rivet 6 corresponding to the support rivet 372 has a head portion 6a, a leg portion 6b, and a support protrusion 6c.
The head 6a and the support protrusion 6c have the same configuration as the head 37a and the support protrusion 37c of the first embodiment.
The leg portion 6b has a cylindrical shape protruding from the rear surface of the head portion 6a.

The fastener 62 has a cylindrical shape having a flange. The axial direction of the cylindrical portion of the fastener 62 is the front-rear direction. The flange portion of the fastener 62 protrudes from the front end portion of the cylindrical portion. The fastener 62 passes through the through holes 361, 331, and 4 in this order from the front side until the flange portion contacts the reflection sheet 36. At this time, the fastener 62 is fitted and fixed in the through holes 361, 331, and 4.
The rivet body 61 is fitted and fixed to the fastener 62. For this reason, the leg 6b penetrates the inside of the fastener 62 from the front side until the head 6a contacts the flange portion of the fastener 62.
As a result, the reflection sheet 36 and the light source substrate 33 are sandwiched between the flange portion of the fastener 62 and the inner surface of the bottom wall 351.

That is, the light source substrate 33 is engaged with the through hole 4 via the rivet 6. Since the light source substrate 33 is positioned by engagement with the through hole 4, the through hole 4 with which the light source substrate 33 is engaged functions as a substrate positioning portion.
The fixing member 38 may have a structure having a rivet body and a fastener similarly to the rivet 6.

  Finally, embodiments of the present invention will be summarized.

  The illuminating device 22 according to the present invention has a dish-shaped container 35 and a light source 34 mounted on one surface thereof, and is arranged in parallel at least in one row on the inner surface of the bottom wall 351 of the container 35. In the lighting device 22 including a plurality of light source substrates 33 and other members other than the light source substrate 33 accommodated in the accommodating body 35, the bottom wall 351 has a plurality of positioning light source substrate 33 for positioning. A substrate positioning portion and a plurality of other member positioning portions for positioning the other member are provided, and the shapes and dimensions of the substrate positioning portion and the other member positioning portion are made common. It is characterized by that.

  In the illumination device 22 according to the present invention, each of the substrate positioning portion and the other member positioning portion is concave or convex with respect to the inner surface, and each light source substrate 33 is associated with one of the substrate positioning portions. The other member is engaged with any one of the other member positioning portions.

  The illuminating device 22 according to the present invention further includes a diffusion plate 31 that is disposed to face the light source 34 and diffuses light emitted from the light source 34, and the other member is a support member 39 that supports the diffusion plate 31. It is characterized by that.

  The lighting device 22 according to the present invention further includes a reflection sheet 36 that covers the one surface and the inner surface of the container 35 and reflects light, and the other member is fixed to fix the reflection sheet 36 to the bottom wall 351. The member 38 is a feature.

  In the illumination device 22 according to the present invention, the number Y of the light source substrates 33 included in one row is in accordance with the formula (1) including constants A, X1, and X2, and the constant A is “7”, “9”, “13”. ”,“ 16 ”,“ 17 ”,“ 19 ”, the constant X1 is one of“ 1 ”,“ 2 ”,“ 3 ”, and the constant X2 is“ -2 ”,“ -1 ”,“ 0 ”,“ 1 ”,“ 2 ”,“ 3 ”, and the combination of constants A, X1, and X2 is a natural number where the result of the operation of equation (1) is Y ≧ 3 It is what becomes.

  In the lighting device 22 according to the present invention, the number of the light source substrates 33 is 3, 4, 5, 6, 7, 9, 10, 11, 13, 16, 17, 19 sheets, 21 sheets, 25 sheets, 31 sheets, 33 sheets, 37 sheets, 41 sheets, or 49 sheets.

  The display device 13 according to the present invention includes the illumination device 22 according to the present invention and a display panel 21 illuminated from the back side by the illumination device 22.

  A television receiver 1 according to the present invention includes a display device 13 according to the present invention and a receiving unit 11 that receives a television broadcast, and the display is based on the television broadcast received by the receiving unit 11. An image is displayed on the device 13.

In the present invention, the shape and dimensions of the substrate positioning portion and the other member positioning portion are made common.
Therefore, for example, when changing the number or arrangement position of the light source substrates, the manufacturer changes the number or arrangement position of the other members. Then, the manufacturer diverts a part of the positioning part for the other member as the positioning part for the substrate, or diverts a part of the positioning part for the substrate as the positioning part for the other member, so that the light source substrates are equally spaced. The other members are appropriately disposed while being disposed on each other.

In the present invention, since the light source substrate engages with any of the substrate positioning portions, it is easy to position the light source substrate and attach the container to the wall surface.
Similarly, since the other member engages with any one of the other member positioning portions, it is easy to position the other member and attach the container to the wall surface.

  In the present invention, for example, changing the number or arrangement position of the support members (or fixing members) in accordance with the change in the number or arrangement position of the light source substrates is the same as that of other members excluding the support member (or fixing member). It is easier than changing the number or arrangement position. Therefore, it can suppress that the change of the number or arrangement position of a supporting member (or fixing member) exerts a bad influence on the quality of an illuminating device.

  In the present invention, the number of light source substrates can be obtained based on equation (1).

  In the present invention, the number of light source substrates is a practical number of 3 or more and 49 or less.

The embodiment disclosed this time is to be considered as illustrative in all points and not restrictive. The scope of the present invention is not intended to include the above-described meanings, but is intended to include meanings equivalent to the claims and all modifications within the scope of the claims.
In addition, as long as the effects of the present invention are obtained, the television receiver 1, the display device 13, or the lighting device 22 may include components that are not disclosed in the first to fifth embodiments.
The constituent elements (technical features) disclosed in each embodiment can be combined with each other, and a new technical feature can be formed by the combination.

DESCRIPTION OF SYMBOLS 1 Television receiver 13 Display apparatus 21 Display panel 22 Illumination apparatus 31 Diffusion plate 33 Light source board 35 Container 36 Reflection sheet 38 Fixing member (other member)
39 Support members (other members)
4 Through hole (positioning part for substrate, positioning part for other members)
51, 52 Convex part (positioning part for substrate, positioning part for other members)

Claims (8)

A dish-shaped container;
A light source is mounted on one surface of each, and a plurality of light source substrates juxtaposed at equal intervals in at least one row on the inner surface of the bottom wall of the container,
In a lighting device comprising: a member other than the light source substrate housed in the housing body;
In the bottom wall,
A plurality of substrate positioning portions for positioning the light source substrate;
A plurality of other member positioning portions for positioning the other members, and
The illumination device characterized in that the substrate positioning portion and the other member positioning portion have the same shape and dimensions. Each of the substrate positioning part and the other member positioning part is concave or convex with respect to the inner surface,
Each light source substrate is engaged with one of the substrate positioning portions,
The lighting device according to claim 1, wherein the other member is engaged with any of the other member positioning portions. A diffusing plate that is disposed opposite to the light source and diffuses the light emitted from the light source;
The lighting device according to claim 1, wherein the other member is a support member that supports the diffusion plate. A reflective sheet that covers the one surface and the inner surface of the container and reflects light;
The lighting device according to claim 1, wherein the other member is a fixing member that fixes the reflective sheet to the bottom wall. The number Y of the light source substrates included in one row is in accordance with the following formula (1) including constants A, X1, and X2.
The constant A is any one of “7”, “9”, “13”, “16”, “17”, “19”, and the constant X1 is any one of “1”, “2”, “3”. The constant X2 is one of "-2", "-1", "0", "1", "2", "3", and the combination of the constants A, X1, X2 is The lighting device according to claim 1, wherein the calculation result of the formula (1) is a natural number of Y ≧ 3.

  The number of the light source substrates is 3, 4, 5, 6, 7, 9, 10, 11, 13, 16, 17, 19, 21, 25, 31 The lighting device according to claim 5, wherein the number is 33, 37, 41, or 49. The lighting device according to any one of claims 1 to 6,
A display panel illuminated from the back side by the illumination device. A display device according to claim 7;
A receiver for receiving television broadcasts,
A television receiver, wherein an image is displayed on the display device based on a television broadcast received by the receiving unit.

Images