JP2010218915A - Sheet supporting tool, light source device, and display device - Google Patents

Sheet supporting tool, light source device, and display device Download PDF

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Publication number
JP2010218915A
JP2010218915A JP2009064990A JP2009064990A JP2010218915A JP 2010218915 A JP2010218915 A JP 2010218915A JP 2009064990 A JP2009064990 A JP 2009064990A JP 2009064990 A JP2009064990 A JP 2009064990A JP 2010218915 A JP2010218915 A JP 2010218915A
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Japan
Prior art keywords
trunk
sheet
light source
cone
conical
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JP2009064990A
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Japanese (ja)
Inventor
Yasushi Matsumoto
康史 松元
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Sharp Corp
シャープ株式会社
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Priority to JP2009064990A priority Critical patent/JP2010218915A/en
Publication of JP2010218915A publication Critical patent/JP2010218915A/en
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Abstract

An object of the present invention is to reduce the number of light sources and to increase the total length of a sheet holder without forming a cone-shaped portion with a large diameter even when the separation distance between the light source and the optical sheet is relatively long. Provided are a sheet receiver, a light source device, and a display device that can ensure the strength resistance of a cone-shaped portion and can make the luminance around the sheet receiver uniform.
An attachment portion 53 attached to a support 1 that supports a peripheral portion of an optical sheet 7, a conical portion 51 that has a substantially conical shape and restricts bending of the optical sheet 7, and a base of the conical portion 51 A sheet holder that has a trunk portion 52 that is arranged in the length direction of the cone-shaped portion 51 from the end and is integrally formed with the cone-shaped portion 51, and a mounting portion 53 is arranged at the proximal end of the trunk portion 52. The brightness around the sheet holder 5 can be made uniform.
[Selection] Figure 3

Description

  The present invention relates to a sheet holder that restricts bending of an optical sheet provided in a display device, a light source device used as a light source of the display device, and a display device.
  In a display device such as a television, a light source device is disposed on the rear side of a display unit having a display surface for displaying an image on the front side, and the light source of the light source device emits light between the light source device and the display unit. An optical sheet for allowing light to enter the display unit is disposed.
  The light source device has a rectangular parallelepiped shape, a housing that supports the peripheral portion of the optical sheet, a plurality of light sources that are spaced apart from each other in the housing, and between the light source and the optical sheet, between adjacent light sources. And a sheet receiver that is attached and restricts the bending of the optical sheet by contacting the sheet surface of the optical sheet (see, for example, Patent Document 1).
  The sheet holder includes a conical portion and a base end of the conical portion, and has a mounting plate portion attached between adjacent light sources in the housing, and the tip of the conical portion contacts one surface of the optical sheet. Thus, the bending of the optical sheet is limited, and the distance between the optical sheet and the light source can be kept substantially uniform.
  In addition, the display device includes a display unit having a display surface on the front side, a light source device having a straight tube shape and a plurality of fluorescent lamps juxtaposed and a housing that accommodates and supports the fluorescent lamps, the light source device, and the display unit And an optical sheet on which light emitted from the fluorescent lamp is incident. The fluorescent lamp in the housing has a V-shaped cross section having two light reflecting surfaces between the fluorescent lamps, and the fluorescent lamp emits light. A columnar light reflector that reflects light toward the optical sheet is disposed, and a support protrusion that restricts the deflection of the optical sheet by contacting the top of the columnar light reflector with the sheet surface of the optical sheet. (For example, refer to Patent Document 2). The columnar light reflector is formed to be approximately the same length as the fluorescent lamp, and the two light reflecting surfaces are arranged in parallel with the fluorescent lamp, and are supported in the middle of the length direction of the columnar light reflector. The protrusion is integrally formed.
JP 2006-210337 A JP 2004-12728 A
  In a display device using a light source device having a plurality of light sources that are spaced apart and juxtaposed as in Patent Document 1 and a sheet holder, the cone in the sheet holder is reduced by narrowing the juxtaposition interval of the light sources. Shadows can be prevented from appearing around the shape. However, the cost increases because the number of light sources increases.
  In a configuration in which the number of light sources is reduced and the juxtaposition of the light sources is narrowed, it is necessary to increase the separation distance between the light source and the optical sheet in order to prevent shadows from appearing around the cone-shaped portion of the sheet holder. is there. In this case, it is necessary to increase the length of the conical portion in the sheet holder and limit the bending of the optical sheet.
  However, when the length of the cone-shaped portion in the sheet holder is increased, the strength of the cone-shaped portion with respect to the bending load of the optical sheet is reduced, and abnormal noise such as squeak noise is easily generated at the contact portion with the optical sheet. Therefore, it is necessary to increase the length of the cone-shaped portion and to increase the strength of the cone-shaped portion by forming the cone-shaped portion with a large diameter.
  However, when the cone portion has a large diameter, when one side surface of the cone portion is irradiated with light emitted from one of the adjacent light sources, a shadow of the cone portion appears on the other side surface of the cone portion. When the other side surface of the cone-shaped portion is irradiated with light emitted from the other of the adjacent light sources, a shadow of the cone-shaped portion appears on one side of the cone-shaped portion, and this shadow appears on the display surface of the display unit. There is a problem that it will appear.
  Further, in a display device in which a support protrusion is provided on the top of a columnar light reflector formed to have a length substantially equal to that of a fluorescent lamp as in Patent Document 2, light emitted from an adjacent light source is columnar. Reflected by the two light reflecting surfaces of the shaped light reflector, the reflected light irradiates one side surface and the other side surface of the support protrusion. However, since the reflected light reflected by the two light reflecting surfaces is not irradiated by the reflected light on the peripheral surface side between the one side surface and the other side surface of the support protrusion, the peripheral surface side between the one side surface and the other side surface There is a problem that a shadow of the support protrusion appears, and this shadow appears on the display surface of the display unit. In addition, since the columnar light reflector is almost the same length as the fluorescent lamp, the light reflector is large, and it is necessary to use a light reflector having a size corresponding to the size of the display device. There is no versatility of reflectors.
  The present invention has been made in view of such circumstances, and the main object is to reduce the number of light sources, and to form a cone-shaped portion with a large diameter even when the distance between the light sources and the optical sheet is relatively long. The overall length of the sheet holder can be made longer, the strength of the cone-shaped portion can be secured, the brightness around the sheet holder can be made uniform, and a shadow around the sheet holder An object of the present invention is to provide a sheet holder, a light source device, and a display device that can be prevented from appearing.
  The sheet holder according to the present invention includes a cone-shaped portion whose tip is in contact with the optical sheet and restricts the deflection of the optical sheet, and a mounting portion for mounting the cone-shaped portion to a support that supports the peripheral edge of the optical sheet. In the sheet holder having a cone portion, a stem portion is provided in a length direction of the cone portion from the proximal end of the cone portion, and is integrally formed with the cone portion, and the trunk portion includes the trunk portion. A mounting portion is arranged.
  In this invention, there is a trunk portion between the cone-shaped portion and the mounting portion, and the trunk portion has the cone-shaped portion away from the mounting portion, so that the overall length is increased without forming the cone-shaped portion with a large diameter. In addition, the strength of the optical sheet against the bending load can be obtained at the trunk. Moreover, since it is not necessary to form the cone-shaped portion with a large diameter, it is difficult to generate a shadow around the cone-shaped portion, and the brightness around the sheet holder can be made uniform.
Further, in the sheet receiver according to the present invention, the conical portion has a substantially conical shape, and the trunk portion has a plate shape having a thickness equal to or less than a diameter of a proximal end of the conical portion. Is preferred.
In the present invention, by arranging the one surface and the other surface in the thickness direction of the trunk portion to be orthogonal to the cylindrical light source, the amount of light irradiated in the direction along the one surface and the other surface is increased. In addition, since the amount of light reflected on the one surface and the other surface can be reduced, the luminance around the trunk can be made uniform, and it is difficult to generate a shadow around the sheet holder.
Moreover, it is preferable that the sheet holder according to the present invention is configured such that both side surfaces of the trunk portion are inclined with respect to the length direction of the cone portion.
In this invention, the volume of the trunk portion is gradually reduced from the attachment portion to the proximal end of the cone portion, and the amount of light reflected on the one surface and the other surface can be further reduced. Further uniformization can be achieved, and shadows can be more unlikely to occur around the sheet holder. Further, since the trunk portion has a wedge shape, the self-supporting stability can be enhanced.
Moreover, it is preferable that the sheet | seat holder which concerns on this invention sets it as the structure where the one surface and the other surface in the thickness direction of the said trunk part are inclined with respect to the length direction of the said cone-shaped part.
According to the present invention, it is possible to increase the self-supporting stability and increase the rigidity of the trunk.
Further, in the sheet receiver according to the present invention, the trunk portion is arranged in the length direction of the cone-shaped portion, and has a ridge portion protruding from at least one of one surface and the other surface in the thickness direction. Is preferred.
In the present invention, the thickness of the trunk portion forming the plate shape can be made relatively thin, and the bending of the trunk portion in the thickness direction can be prevented by the protruding strip portion, so that the self-supporting stability can be improved. The sheet holder can be made lighter and smaller.
Moreover, it is preferable that the sheet | seat holder which concerns on this invention sets it as the structure in which the said trunk part has the through-hole penetrated to thickness direction.
In this invention, since the light emitted from the light source passes through the through-hole of the trunk, it becomes more difficult for the shadow to be generated around the trunk, and the brightness around the trunk can be made more uniform.
Further, in the sheet receiver according to the present invention, the cone portion has a substantially conical shape, and the trunk portion has a plurality of columnar portions that are inclined in different directions with respect to the length direction of the cone portion. Is preferable.
In the present invention, the plurality of columnar portions can be made relatively thin, and the light emitted from the light source can be transmitted between the columnar portions, so that the brightness around the trunk can be made uniform and self-supporting. Stability can be increased. In addition, since the relatively thin columnar portion can be a trunk portion that is more flexible than the plate shape, even if the optical sheet and the sheet holder vibrate relatively, the vibration causes the columnar portion. The shape portion can be bent, and the optical sheet can be prevented from being rubbed by the sheet holder.
Further, in the sheet receiver according to the present invention, the cone portion has a substantially conical shape, the trunk portion has two plate bodies having a substantially trapezoidal shape, and a short side end of each plate body has the cone shape portion. It is preferable that the long-side ends are separated in the thickness direction.
In this invention, the self-supporting stability can be enhanced by the two plates, the two plates can be made relatively thin, and the light emitted from the light source is the two plates. Since the light passes through the body, the brightness around the trunk can be made uniform.
Further, in the sheet receiver according to the present invention, the trunk portion connects two plate bodies facing each other in a direction orthogonal to the length direction, and an end portion of each plate body on the conical portion side. It is preferable that the conical portion is integrated with the connecting body.
In the present invention, the two plates can improve the self-supporting stability, and one surface and the other surface in the thickness direction of the trunk are arranged so as to be orthogonal to the cylindrical light source. As a result, the amount of light irradiated in the direction along the one surface and the other surface can be increased, and the amount of light reflected on the one surface and the other surface can be reduced. It can make it difficult for shadows to appear around the tool.
In the sheet receiver according to the present invention, the conical portion has a substantially conical shape, the trunk portion has a cylindrical shape having a diameter equal to or less than a diameter of a proximal end of the conical portion, and at least one in a circumferential direction of the trunk portion. It is preferable to have a configuration in which protruding portions along the length direction are provided at the locations.
In the present invention, the columnar trunk can be made relatively thin, the deflection of the trunk can be prevented by the ridges, and the self-supporting stability can be improved. Can be
In the sheet receiver according to the present invention, it is preferable that the cone portion has a plate shape, and the trunk portion has a plate shape having the same thickness direction as the cone portion.
In this invention, since the cone-shaped portion and the trunk portion are plate-shaped, one surface and the other surface in the thickness direction of the cone-shaped portion and the trunk portion are arranged so as to be orthogonal to the light source having a cylindrical shape. By increasing the amount of light irradiated in the direction along the one surface and the other surface and reducing the amount of light reflected by the cone portion and the trunk portion, the luminance around the cone portion and the trunk portion can be made uniform. It is possible to make it difficult to generate a shadow around the sheet holder.
Moreover, it is preferable that the sheet | seat holder which concerns on this invention sets it as the structure where the cross-sectional shape of the direction in alignment with both surfaces of the said cone-shaped part and a trunk part is a substantially triangle.
In this invention, since the buckling rigidity of the sheet receiver can be increased, the durability of the sheet receiver in which the conical portion and the trunk portion form a plate shape can be increased.
In the sheet receiver according to the present invention, it is preferable that at least one of the cone-shaped portion and the trunk portion has a through-hole penetrating in the thickness direction.
In this invention, since the light emitted from the light source passes through the through hole of the light reflecting portion, the luminance around the trunk portion can be made more uniform, and the shadow around the sheet holder can be made less likely to occur.
Further, in the sheet holder according to the present invention, the cone-shaped portion and the trunk portion are configured such that the pointed portions of the two plate bodies having a substantially triangular shape are joined and the base ends are separated in the thickness direction. Is preferred.
In this invention, the self-supporting stability can be enhanced by the two plate bodies, and the buckling rigidity of the sheet receiver can be enhanced, and the durability of the sheet receiver comprising the two plate bodies can be increased. Can increase the sex.
The sheet holder according to the present invention is attached between a plurality of light sources arranged side by side, a support that supports the optical sheet on which the light emitted from the light sources and the light source is incident, and the light sources in the support. It is provided with the sheet | seat holder of invention mentioned above.
In this invention, since the attachment portion of the sheet receiver having the trunk portion between the cone-shaped portion and the attachment portion and the trunk portion keeping the cone-shaped portion away from the attachment portion is attached to the support, it is juxtaposed. Even when the number of light sources to be reduced is reduced, the overall length of the sheet holder can be increased without forming the cone-shaped portion with a large diameter, and the strength against the bending load of the optical sheet can be secured, And since it is not necessary to form a cone-shaped part with a large diameter, it is hard to produce a shadow around a cone-shaped part, and the brightness | luminance around a sheet | seat holder can be equalize | homogenized.
Further, in the sheet holder according to the present invention, the light source has a cylindrical shape, and the sheet receiver has a central portion between adjacent light sources, and one surface and the other surface in the thickness direction are orthogonal to the light source. It is preferable to adopt a configuration in which it is arranged.
In the present invention, the attachment portion of the sheet receiver that has a trunk portion between the conical portion and the attachment portion, and the trunk portion separates the conical portion from the attachment portion. Since one side and the other side are attached to the central part between adjacent light sources so that they are orthogonal to the light source, even if the number of light sources arranged in parallel is reduced, the light is irradiated in the direction along the one side and the other side of the trunk. Since the amount of light reflected can be increased and the amount of light reflected on the one surface and the other surface can be decreased, the luminance around the trunk can be made uniform, and a shadow can hardly be generated around the sheet holder.
In the sheet holder according to the present invention, the light source has a cylindrical shape, includes a plurality of clips attached to the support body, holding a middle portion in the longitudinal direction of the light source, and the sheet holder is adjacent to the light source. It is preferable that the light sources are arranged apart from each other in the length direction of the light source between the matching light sources.
In the present invention, the clip is disposed on the light source having a cylindrical shape, and the sheet holder is disposed between the adjacent light sources and at a position separated from the clip in the length direction of the light source. Even when the number of light sources juxtaposed is reduced, the shadow around the sheet holder can be eliminated without being affected by the clip, and the clip can be eliminated without being affected by the sheet holder. You can prevent shadows from appearing around you.
In the sheet receiver according to the present invention, it is preferable that the sheet receiver is arranged so that the one surface and the other surface are orthogonal to the light source.
In the present invention, the sheet holder disposed at a position separated from the clip in the length direction of the light source is adjacent to each other so that one surface and the other surface of the trunk of the sheet receiver are orthogonal to the light source. Since it is attached between the light sources, even when the number of light sources arranged in parallel is reduced, the amount of light irradiated in the direction along the one surface and the other surface of the trunk can be increased. Therefore, it is possible to prevent a shadow from appearing around the cone portion.
Further, the sheet receiver according to the present invention includes a display unit having a display surface on one side, the light source device of the invention described above disposed on the other side of the display unit, and the light emitted from the light source. And an optical sheet incident on the part.
In this invention, the optical sheet is bent by the sheet holder that has a trunk portion between the conical portion and the attachment portion and can increase the overall length without forming the conical portion in a large diameter. Therefore, even when the number of light sources arranged side by side is reduced, it is possible to eliminate the appearance of shadows around the sheet holder and to uniformize the luminance of the entire irradiation range irradiated by the light sources.
  According to the present invention, there is a trunk portion between the cone-shaped portion and the attachment portion, and the trunk portion has the cone-shaped portion away from the attachment portion, so that the overall length is increased without forming the cone-shaped portion with a large diameter. In addition, it is possible to obtain the strength against the bending load of the optical sheet, and since it is not necessary to form the cone-shaped portion with a large diameter, it is difficult to generate a shadow around the cone-shaped portion. The surrounding brightness can be made uniform.
  Further, according to the present invention, there is a trunk portion between the conical portion and the attachment portion, and the attachment portion of the sheet receiver in which the trunk portion separates the conical portion from the attachment portion is attached to the support body. Even when the number of light sources arranged in parallel is reduced, the overall length of the sheet holder can be increased without forming the cone-shaped portion with a large diameter, and the strength against the bending load of the optical sheet can be ensured. . In addition, since it is not necessary to form the cone-shaped portion with a large diameter, it is difficult to generate a shadow around the cone-shaped portion, the brightness around the sheet holder can be made uniform, and the entire irradiation range irradiated by the light source Can be made more uniform.
It is a front view which shows the structure of the light source device which concerns on this invention. It is the perspective view which expanded a part of light source device concerning the present invention. It is sectional drawing which expanded a part which shows the structure of the light source device which concerns on this invention. It is a front view which shows the structure of the support body of the light source device which concerns on this invention. It is a perspective view which shows the structure of the sheet | seat holder with which the light source device which concerns on this invention is provided. It is sectional drawing which shows the structure of a display apparatus provided with the light source device which concerns on this invention. It is a perspective view which shows the other structure of the sheet | seat holder with which the light source device which concerns on this invention is provided. It is a perspective view which shows the other structure of the sheet | seat holder with which the light source device which concerns on this invention is provided. It is a perspective view which shows the other structure of the sheet | seat holder with which the light source device which concerns on this invention is provided. It is a perspective view which shows the other structure of the sheet | seat holder with which the light source device which concerns on this invention is provided. It is a perspective view which shows the other structure of the sheet | seat holder with which the light source device which concerns on this invention is provided. It is a perspective view which shows the other structure of the sheet | seat holder with which the light source device which concerns on this invention is provided. It is a perspective view which shows the other structure of the sheet | seat holder with which the light source device which concerns on this invention is provided. It is a perspective view which shows the other structure of the sheet | seat holder with which the light source device which concerns on this invention is provided. It is a perspective view which shows the other structure of the sheet | seat holder with which the light source device which concerns on this invention is provided. It is a perspective view which shows the other structure of the sheet | seat holder with which the light source device which concerns on this invention is provided. It is a perspective view which shows the other structure of the sheet | seat holder with which the light source device which concerns on this invention is provided. It is a perspective view which shows the other structure of the sheet | seat holder with which the light source device which concerns on this invention is provided. It is a perspective view which shows the other structure of the sheet | seat holder with which the light source device which concerns on this invention is provided.
  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is a front view showing a configuration of a light source device according to the present invention, FIG. 2 is a partially enlarged perspective view of the light source device, and FIG. 3 is a partially enlarged sectional view showing the configuration of the light source device.
  The light source device shown in the figure has a box-shaped rectangular parallelepiped, and has a support body 1 that supports the peripheral edge of the optical sheet at the open end and a cylindrical shape, and is substantially vertically spaced in the support body 1. A plurality of light sources 2 arranged side by side, holders 3 and 3 that hold both ends of the light source 2 inside the support 1, and a synthetic resin that holds the middle in the length direction of the light source 2 and is attached to the support 1 A plurality of clips 4 made of plastic, and a sheet receiver 5 made of synthetic resin that is attached to the support 1 and restricts the bending of the optical sheet. The inner surface portion of the support 1 is a light reflecting surface 1 a that reflects light emitted from the light source 2 toward the open side of the support 1. The light reflecting surface 1 a is a surface that the support 1 itself reflects, and may be a light reflecting layer that is separate from the support 1.
  FIG. 4 is a front view showing the structure of the support. The support 1 is formed by forming a metal plate, and includes a rectangular plate portion 11 and a frame portion 12 connected to the periphery of the plate portion 11. The plate portion 11 is provided with a plurality of first attachment holes 13 for attaching the clip 4 and a plurality of second attachment holes 14 for attaching the sheet receiver 5, and the plate portion 11. The light reflecting plate which comprises the light reflection surface 1a is distribute | arranged inside.
  As shown in FIG. 4, the first mounting holes 13 are opened by being alternately biased in the length direction at positions facing the central portions in the length direction of the respective light sources 2. As shown in FIG. 4, the second mounting hole 14 is formed at a central portion between the adjacent light sources 2 and 2 and at a position separated from the clip 4 in the length direction of the light source 2. The first and second mounting holes 13 and 14 are round. The first mounting holes 13 are provided corresponding to the number of the light sources 2, and the second mounting holes 14 are provided separately in the juxtaposition direction of the light sources 2 regardless of the number of the light sources 2. Further, the second mounting holes 14 are arranged at two locations on one of the two diagonals of the support 1.
  The light source 2 is a cold cathode tube having a cylindrical shape and electrodes at both ends. An inverter circuit board is connected to the electrode of each light source 2, and the brightness is controlled by a pulse width modulation signal. Yes.
  The clip 4 faces the reflecting surface of the support 1 and has a rectangular substrate 41, a holding portion 42 in which the intermediate portion in the longitudinal direction of the light source 2 is fitted and held, and a projection provided on the other surface of the substrate 41. It has the attachment part 43 inserted and latched by the 1 attachment hole 13, and is integrally molded by the polycarbonate excellent in heat resistance and light reflectivity. The holding portion 42 has two holding pieces that hold the light source 2 in opposition to be spaced apart from each other in the juxtaposition direction of the light source 2. The attachment portion 43 has two claw portions at the tip of the plate-like protruding piece, and the claw portion is locked to the hole edge portion of the first attachment hole 13.
  FIG. 5 is a perspective view showing the configuration of the sheet receiver. The sheet holder 5 is connected to a conical portion 51 that restricts the deflection of the optical sheet by contacting the sheet surface of the optical sheet, and a base end of the conical portion 51. The conical portion 51 will be described later. A white polycarbonate resin that has a plate-like trunk portion 52 that is distant from the attachment portion 53 and an attachment portion 53 that is connected to the stem portion 52 and is fitted and locked into the second attachment hole 14 and has excellent light reflectivity. Is integrally molded.
  The conical portion 51 has a substantially conical shape in which the volume gradually decreases from the proximal end connected to the trunk portion 52 to the distal end, and the distal end has a spherical surface. The diameter of the base end of the conical portion 51 is about 4 to 5 mm. The peripheral surface between one side surface and the other side surface of the base end portion in the cone-shaped portion 51 is removed along the length direction, and the cross-sectional shape of the base end portion is non-circular. It may have a cross-sectional shape.
  The trunk portion 52 is disposed in the length direction of the cone-shaped portion 51 from the proximal end of the cone-shaped portion 51, and has a wedge shape in which the volume gradually decreases from the attachment portion 53 to the proximal end of the cone-shaped portion 51. It has a plate shape having a thickness of about ½ of the diameter of the base end in the portion 51, and continues to the radial center of the base end in the cone-shaped portion 51. Two side surfaces 52 c and 52 c between the one surface 52 a and the other surface 52 b in the thickness direction are inclined by about 45 degrees with respect to the length direction of the conical portion 51.
  The mounting portion 53 has one surface continuous to the base end of the trunk portion 52 and the other surface facing the light reflecting surface of the support 1, and a plate-shaped protruding piece 53b protruding from the other surface of the substrate 53a. And the two claw portions 53c connected to the tip of the plate-like projecting piece 53b, and the claw portion 53c is locked to the hole edge portion of the second mounting hole 14.
  In the light source device A configured as described above, the mounting portion 43 of the clip 4 is inserted and locked in the first mounting hole 13 of the support 1, and the plurality of light sources 2 are juxtaposed in the support 1. Both end portions of the light source 2 are held in the support 1 by the holders 3 and 3, and an intermediate portion of the light source 2 is inserted and clamped by the clamping portion 42 of the clip 4. Further, the attachment portion 53 of the sheet holder 5 is inserted and locked in the second attachment hole 14 of the support 1.
  As shown in FIG. 1, the clips 4 attached to the first attachment holes 13 are alternately biased in the length direction of the light source 2, and the sheet holder 5 attached to the second attachment hole 14 is As shown in FIGS. 1 and 2, one surface 52 a and the other surface of the trunk 52 are disposed at two positions on one diagonal of the support 1 and at a position separated from the clip 4 in the length direction of the light source 2. 52 b is arranged so as to be orthogonal to the light source 2.
  The light emitted from the light source 2 irradiates the clip 4, the sheet holder 5, and the light reflecting surface 1 a in the support 1. Since the clip 4 has a relatively short length with respect to the light reflecting surface 1a in the support 1, and the clip 4 itself is made of synthetic resin having excellent light reflectivity, the light reflected by the light reflecting surface 1a is used. The brightness around the clip 4 can be made uniform.
  Although the sheet receiver 5 has a relatively long length with respect to the light reflecting surface 1 a in the support 1, the trunk portion in which the cone portion 51 is separated from the light reflecting surface 1 a between the cone portion 51 and the attachment portion 53. 52, and the overall length of the sheet receiver 5 can be increased without forming the cone-shaped portion 51 with a large diameter, so that it is difficult for a shadow to be generated around the cone-shaped portion 51. In addition, since the base end of the conical portion 51 is continuous with the trunk portion 52, the trunk portion 52 can obtain strength against the bending load of the optical sheet.
  The light irradiated onto the sheet holder 5 part becomes direct light along one surface 52a and the other surface 52b of the trunk 52, and the amount of light reflected by the two side surfaces 52c and 52c of the trunk 52 is small. It is possible to make uniform, and it is difficult for shadows to occur around the sheet holder 5. Further, since the sheet holder 5 is arranged at a position separated from the clip 4 in the length direction of the light source 2, it is possible to prevent a shadow from being generated around the sheet holder 5 without being affected by the clip 4. be able to.
  FIG. 6 is a cross-sectional view illustrating a configuration of a display device including a light source device. The light source device A is used in a liquid crystal display device such as a liquid crystal television.
  As shown in FIG. 6, the liquid crystal display device includes a display unit 6 having a display surface on the front side and a substantially rectangular parallelepiped, a light source device A disposed on the rear side of the display unit 6, and the light source device A and the display unit. 6, and an optical sheet 7 that enters light emitted from the light source 2 to the display unit 6, and a cabinet 8 that covers the periphery of the display unit 6 and the rear side of the light source device A.
  The display unit 6 includes a display panel 61 having polarizing plates attached to the front and rear sides, and a front holding frame body 62 and a rear holding frame body 63 that hold and hold the peripheral edge of the display panel 61 in the front and rear directions. The peripheral edge portion is supported by the open end of the support 1.
  The optical sheet 7 is a relatively thick wall for diffusing the light emitted from the light source 2, and a relatively thin wall such as a translucent and flexible diffusion plate, a reflective polarizing sheet, a prism sheet, and a diffusion sheet. It is a laminated body in which a synthetic resin sheet having optical properties and flexibility is laminated, is formed in a substantially rectangular shape corresponding to the display portion 6, and the peripheral edge is at the open end of the support 1. It is supported.
  As shown in FIG. 3, the sheet holder 5 attached to the support 1 that supports the peripheral edge of the optical sheet 7 is positioned opposite the central portion of the optical sheet 7, and the tip of the conical portion 51 is optical. They face each other at a slight distance so as to come into contact with one surface of the sheet 7, limit the bending of the optical sheet 7, and keep the distance between the optical sheet 7 and the light source 2 even.
  The light emitted from the light source 2 irradiates the light reflecting surface 1 a in the optical sheet 7, the clip 4, the sheet holder 5 and the support 1. By this irradiation, the brightness around the clip 4 can be made uniform, and the brightness around the one side and the other side of each of the cone 51 and the trunk 52 in the sheet receiver 5 can be made uniform.
7 to 19 are perspective views showing other configurations of the sheet holder provided in the light source device.
In the sheet receiver 5 a shown in FIG. 7, instead of the plate-shaped trunk portion 52 being wedge-shaped inclined from the peripheral surface of the proximal end of the cone-shaped portion 51, the proximal end of the substantially cone-shaped cone-shaped portion 51 is formed. A trapezoidal shape that is inclined from a portion that protrudes from the peripheral surface, and a conical portion 51 is connected to a central portion in the length direction of the short side edge of the trunk portion 52.
In the form of this embodiment, the rigidity of the trunk 52 can be increased.
The sheet holder 5b shown in FIG. 8 is configured so that the plate-shaped trunk portion 52 is parallel to a portion protruding from the peripheral surface of the proximal end of the substantially conical cone-shaped portion 51 instead of the wedge shape and the trapezoid shape. The conical portion 51 is connected to the central portion in the length direction of one end edge on the short side of the trunk portion 52.
In this embodiment, the rigidity of the trunk 52 can be increased.
  The sheet holder 5c shown in FIG. 9 has a plate shape and the length of the conical portion 51 on one surface 52a and the other surface 52b of the trunk portion 52 that forms a wedge shape inclined from the peripheral surface of the proximal end of the conical portion 51. The protrusion 52d arranged in the direction is integrally provided. In addition, the protrusion part 52d is good also as a structure provided in the one surface 52a and the other surface 52b of the sheet | seat holder 5 shown to FIG. 7, FIG.
  In this embodiment, since the ridge 52 d reinforces the trunk 52, the strength of the trunk 52 against the bending load of the optical sheet 7 can be increased. Therefore, the trunk 52 can be thinned.
  A sheet receiver 5d shown in FIG. 10 has a plate shape and a through hole 54 penetrating in a thickness direction into a trunk portion 52 having a wedge shape inclined from a peripheral surface of a proximal end of a cone portion 51 having a substantially conical shape. Is established. FIG. 10A shows a triangular through hole 54 having an inner surface substantially parallel to the two side surfaces 52c and 52c, and FIG. 10B shows a plurality of circular through holes 54. It has been established. In addition, the through-hole 54 is good also as a structure provided in the one surface 52a and the other surface 52a of the sheet | seat holder 5 shown to FIG. 7, FIG. Further, the number and shape of the through holes 54 are not particularly limited.
  In this embodiment, the light emitted from the light source 2 is transmitted through the through hole 54 of the trunk portion 52, the brightness around the trunk portion 52 can be made even more uniform, and the area around the sheet holder 5 is further shadowed. Can be made difficult to occur.
The sheet receiver 5e shown in FIG. 11 has a plate shape, and one surface and the other surface in the thickness direction of the trunk portion 52 that forms a wedge shape that is inclined from the peripheral surface of the proximal end of the conical portion 51 that has a substantially conical shape. It is inclined with respect to the length direction of the conical portion 51, and has a substantially trapezoidal shape in which the conical portion 51 side is thin and the attachment portion 53 side is thick. The trunk portion 52 may have a configuration in which a through-hole penetrating in the thickness direction is opened.
In the form of this embodiment, the self-supporting stability can be increased and the rigidity of the trunk can be increased.
  A sheet holder 5f shown in FIG. 12 has columnar portions 52e as the trunk portions 52 at two places inclined to both sides with respect to the length direction of the cone-shaped portion 51, instead of the plate-shaped trunk portions 52. It is a thing arranged. This columnar portion 52 e is formed to be relatively thin, and is connected to two circumferential positions at the base end of the conical portion 51. The columnar portion 52e has a cylindrical shape, but may alternatively be a prismatic shape or a columnar shape having an elliptical cross section.
  In this embodiment, the light emitted from the light source 2 is transmitted between the columnar portions 52e in the trunk portion 52, the luminance around the trunk portion 52 can be made more uniform, and the area around the sheet holder 5 can be more uniform. It can make it harder to generate shadows. Further, since the columnar part 52e is relatively thin, even if the optical sheet 7 and the sheet holder 5 may vibrate relatively, the columnar part 52e can be slightly bent by this vibration. 5 can prevent the optical sheet 7 from being rubbed.
  The sheet holder 5g shown in FIG. 13 is a columnar shape as the trunk portion 52 at three positions inclined at three equal intervals with respect to the length direction of the cone-shaped portion 51 instead of the trunk portion 52 having a plate shape. The part 52e is arranged. The columnar portion 52 e is formed to be relatively thin, and is connected to three circumferential positions at the base end of the conical portion 51. The columnar portion 52e has a cylindrical shape, but may alternatively be a prismatic shape or a columnar shape having an elliptical cross section.
  In this embodiment, the strength of the trunk 52 against the bending load of the optical sheet 7 can be increased and the self-supporting stability can be enhanced, and the light emitted from the light source 2 is three pillars in the trunk 52. The light is transmitted between the shape portions, and the luminance around the trunk portion 52 can be made uniform. Further, since the columnar part 52e is relatively thin, even if the optical sheet 7 and the sheet holder 5 may vibrate relatively, the columnar part 52e can be slightly bent by this vibration. 5 can prevent the optical sheet 7 from being rubbed.
  The sheet holder 5h shown in FIG. 14 has a columnar shape as the trunk portion 52 at four locations inclined at four equal intervals with respect to the length direction of the cone-shaped portion 51, instead of the trunk portion 52 having a plate shape. The part 52e is arranged. The columnar portion 52 e is formed to be relatively thin, and is connected to four circumferential positions at the base end of the conical portion 51. The columnar portion 52e has a cylindrical shape, but may alternatively be a prismatic shape or a columnar shape having an elliptical cross section.
  In this embodiment, the strength of the trunk portion 52 against the bending load of the optical sheet 7 can be increased and the self-supporting stability can be enhanced, and the light emitted from the light source 2 is four pillars in the trunk portion 52. The light is transmitted between the shape portions, and the luminance around the trunk portion 52 can be made uniform.
  A sheet holder 5i shown in FIG. 15 is a cylinder instead of providing columnar portions 52e as trunk portions 52 at a plurality of positions inclined in different directions with respect to the length direction of the cone-shaped portion 51 having a substantially conical shape. The trunk portion 52 having the shape is arranged in the length direction of the cone-shaped portion 51, and the convex strip portions 52 f arranged in the length direction of the cone-shaped portion 51 are integrally provided at two locations in the circumferential direction of the trunk portion 52. Is. The trunk portion 52 has a cylindrical shape that is equal to or smaller than the diameter of the proximal end of the conical portion 51.
  In this embodiment, since the ridge 52f reinforces the trunk 52, the strength of the trunk 52 against the bending load of the optical sheet 7 can be increased. Therefore, the trunk 52 can be made thinner.
  The sheet holder 5j shown in FIG. 16 has the length of the cone-shaped portion 51 instead of arranging the columnar portions 52e as the trunk portions 52 at a plurality of positions inclined in different directions with respect to the length direction of the cone-shaped portion 51. A stem 52 having two plates 52g, 52g facing each other in a direction perpendicular to the vertical direction and a connecting body 52h for connecting the ends of the plates 52g, 52g on the conical portion 51 side, A conical portion 51 is integrally provided at the center of 52h. In FIG. 16 (a), the two plate bodies 52g, 52g are rectangular, and in FIG. 16 (b), the two plate bodies 52g, 52g are substantially trapezoidal. Each plate 52g, 52g may be a rectangular shape or a trapezoidal shape, or may be a substantially triangular shape. Each plate 52g, 52g may be configured to be inclined with respect to the length direction of the conical portion 51.
  In this embodiment, the strength of the trunk 52 against the bending load of the optical sheet 7 can be further increased by the two plate bodies 52g and 52g and the coupling body 52h that are spaced apart and opposed to each other.
  A sheet holder 5k shown in FIG. 17 includes two plate bodies 52i and 52i each having a substantially trapezoidal shape, and a trunk portion 52 coupled to a base end of a cone-shaped portion 51 having a substantially conical shape. , 52i are coupled to the conical portion 51, and the long side ends on the attachment portion 53 side are separated in the thickness direction.
  In this embodiment, the two plate bodies 52i and 52i can improve the self-supporting stability, the two plate bodies 52i and 52i can be made relatively thin, and the light source 2 Since the light emitted by is transmitted between the two plates 52i and 52i, the brightness around the trunk 52 can be made uniform.
  The sheet holder 5m shown in FIG. 18 is configured such that the conical portion 51 and the trunk portion 52 are inclined with respect to the length direction of the conical portion 51 instead of the conical portion 51 having a conical shape and the trunk portion 52 having a plate shape. This is a single plate having two side surfaces 51a and 51a. A cross-sectional shape in the direction along the one surface and the other surface in the thickness direction of the cone-shaped portion 51 and the trunk portion 52 is a substantially triangular shape, and a triangular through hole 54 having an inner surface substantially parallel to the two side surfaces 51a and 51a is opened. ing. Although the conical portion 51 and the trunk portion 52 are formed to have substantially the same thickness, the thickness of the conical portion 51 and the trunk portion 52 may be different. Moreover, it is good also as a structure which provides the through-hole 54 separately in the cone-shaped part 51 and the trunk | drum 52, and is distribute | arranged to the length direction of the cone-shaped part 51 on the one surface and other surface of the cone-shaped part 51 and the trunk | drum 52. It is good also as a structure which has the protruding item | line part which removes, and it is good also as a structure which eliminated the through-hole 54. FIG.
  In this embodiment, the amount of light irradiated in the direction along the one surface and the other surface of the cone-shaped portion 51 and the trunk portion 52 can be increased, and the amount of light reflected on the one surface and the other surface can be decreased. The brightness around the shape portion 51 and the trunk portion 52 can be made uniform, and a shadow can hardly be generated around the sheet receiver 5.
  A sheet holder 5n shown in FIG. 19 has two plate bodies 52j, 52j each having a substantially triangular shape, instead of the cone portion 51 having a conical shape and the trunk portion 52 having a plate shape. Are configured to have a substantially inverted V shape in which the cusps are joined and the base ends are separated in the thickness direction.
  In this embodiment, the two plate bodies 52j and 52j can improve the self-supporting stability, and the two plate bodies 52j and 52j can be made relatively thin, thereby reducing the weight. Can be planned.
  The sheet holders 5a to 5n shown in FIGS. 7 to 19 are integrally formed of a white polycarbonate resin having excellent light reflectivity. In addition, in FIGS. 7 to 19, other configurations and operations are the same as those of the sheet holder 5 included in the light source device shown in FIGS. Descriptions and descriptions of functions and effects are omitted.
  In the embodiment described above, the light source 2 having a cylindrical shape is provided. However, the light source 2 may be a light emitting diode, and the configuration of the light source 2 is not particularly limited.
  Further, in the embodiment described above, the sheet receiver 5 is disposed at two locations on one of the two diagonals of the support 1, but the sheet receiver 5 is also the support 1. It is good also as a structure which has distribute | arranged to two each on two diagonals, or three or more places, and the number and arrangement | positioning location of the sheet | seat holder 5 are not specifically limited.
  In the embodiment described above, the sheet holder 5 is made of polycarbonate resin. However, it may be made of synthetic resin having high light reflectivity, and a white paint having high light reflectivity may be used. It is good also as the structure currently apply | coated.
DESCRIPTION OF SYMBOLS 1 Support body 2 Light source 4 Clip 5,5a-5n Sheet holder 51 Conical part 52 Trunk part 52a One side 52b Other side 52c Side surface 52d, 52f Projection part 52e Column-shaped part 52g, 52i, 52j Plate body 52h Connection body 53 Attachment Part 54 Through-hole 6 Display part 7 Optical sheet A Light source device

Claims (19)

  1.   In the sheet holder having a cone-shaped portion whose tip is in contact with the optical sheet and restricting the bending of the optical sheet, and a mounting portion for attaching the cone-shaped portion to a support that supports a peripheral portion of the optical sheet, It has a trunk part which is arranged in the length direction of the cone-shaped part from the base end of the shape part and is formed integrally with the cone-shaped part, and the mounting part is arranged on the proximal end of the trunk part. Characteristic sheet holder.
  2.   The sheet holder according to claim 1, wherein the conical portion has a substantially conical shape, and the trunk portion has a plate shape having a thickness equal to or less than a diameter of a proximal end of the conical portion.
  3.   The sheet holder according to claim 2, wherein both side surfaces of the trunk portion are inclined with respect to a length direction of the conical portion.
  4.   4. The sheet holder according to claim 2, wherein one surface and the other surface in the thickness direction of the trunk portion are inclined with respect to a length direction of the cone-shaped portion.
  5.   The sheet receiver according to any one of claims 2 to 4, wherein the trunk portion has a ridge portion that is arranged in a length direction of the conical portion and protrudes from at least one of one surface and the other surface in the thickness direction. Ingredients.
  6.   The sheet holder according to any one of claims 2 to 5, wherein the trunk portion has a through hole penetrating in a thickness direction.
  7.   The sheet holder according to claim 1, wherein the conical portion has a substantially conical shape, and the trunk portion includes a plurality of columnar portions that are inclined in different directions with respect to a length direction of the conical portion.
  8.   The cone-shaped portion has a substantially conical shape, and the trunk portion has two substantially trapezoidal plates. The short-side ends of the plates are coupled to the cone-shaped portion, and the long-side ends are in the thickness direction. The sheet receiver according to claim 1, which is spaced apart from each other.
  9.   The trunk portion includes two plate bodies that are spaced apart and face each other in a direction orthogonal to the length direction, and a connecting body that connects end portions on the cone-shaped portion side of each plate body, and the cone shape The sheet receiver according to claim 1, wherein the portion is integral with the connecting body.
  10.   The cone-shaped portion has a substantially conical shape, the trunk portion has a columnar shape having a diameter equal to or less than the diameter of the proximal end of the cone-shaped portion, and a ridge portion along the length direction at least at one place in the circumferential direction of the trunk portion. The sheet receiver according to claim 1 provided.
  11.   The sheet holder according to claim 1, wherein the conical portion has a plate shape, and the trunk portion has a plate shape having the same thickness direction as the conical portion.
  12.   The sheet receiver according to claim 11, wherein a cross-sectional shape in a direction along both sides of the conical portion and the trunk portion is a substantially triangular shape.
  13.   The sheet holder according to claim 11 or 12, wherein at least one of the conical portion and the trunk portion has a through hole penetrating in a thickness direction.
  14.   2. The sheet holder according to claim 1, wherein the cone-shaped portion and the trunk portion are joined to each other at the cusp portions of two substantially triangular plate bodies, and the base ends are separated in the thickness direction.
  15.   The plurality of light sources arranged side by side, a support member that supports the optical sheet on which the light source and light emitted from the light source are incident, and the light source in the support member are attached between the light sources. A light source device comprising the sheet receiver described above.
  16.   The light source has a cylindrical shape, and the sheet holder is arranged at a central portion between adjacent light sources so that one surface and the other surface in the thickness direction are orthogonal to the light source. Light source device.
  17.   The light source has a cylindrical shape, and includes a plurality of clips attached to the support body, holding a middle portion in a longitudinal direction of the light source, and the sheet holder is disposed between adjacent light sources with respect to the clips. The light source device according to claim 15, wherein the light source device is spaced apart in the length direction of the light source.
  18.   The light source device according to claim 17, wherein the sheet receiver is arranged such that the one surface and the other surface are orthogonal to the light source.
  19.   A display unit having a display surface on one side, the light source device according to any one of claims 15 to 18 disposed on the other side of the display unit, and light emitted from the light source to the display unit A display device comprising an incident optical sheet.
JP2009064990A 2009-03-17 2009-03-17 Sheet supporting tool, light source device, and display device Pending JP2010218915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009064990A JP2010218915A (en) 2009-03-17 2009-03-17 Sheet supporting tool, light source device, and display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009064990A JP2010218915A (en) 2009-03-17 2009-03-17 Sheet supporting tool, light source device, and display device

Publications (1)

Publication Number Publication Date
JP2010218915A true JP2010218915A (en) 2010-09-30

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Family Applications (1)

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JP2009064990A Pending JP2010218915A (en) 2009-03-17 2009-03-17 Sheet supporting tool, light source device, and display device

Country Status (1)

Country Link
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013098175A (en) * 2011-11-04 2013-05-20 Chi Lin Optoelectronics Co Ltd Downright backlight module
JP2013161793A (en) * 2012-02-07 2013-08-19 Samsung Electronics Co Ltd Support member for backlight unit, backlight unit having the same, and image display device
US20140009909A1 (en) * 2012-07-04 2014-01-09 Sony Corporation Display device
WO2019172483A1 (en) * 2018-03-07 2019-09-12 엘지전자(주) Display device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013098175A (en) * 2011-11-04 2013-05-20 Chi Lin Optoelectronics Co Ltd Downright backlight module
JP2013161793A (en) * 2012-02-07 2013-08-19 Samsung Electronics Co Ltd Support member for backlight unit, backlight unit having the same, and image display device
US9128326B2 (en) 2012-02-07 2015-09-08 Samsung Electronics Co., Ltd. Supporting member for backlight unit, backlight unit and image display apparatus having the same
US20150346552A1 (en) * 2012-02-07 2015-12-03 Samsung Electronics Co., Ltd. Supporting member for backlight unit, backlight unit and image display apparatus having the same
US10001670B2 (en) 2012-02-07 2018-06-19 Samsung Electronics Co., Ltd. Supporting member for backlight unit, backlight unit and image display apparatus having the same
US20140009909A1 (en) * 2012-07-04 2014-01-09 Sony Corporation Display device
CN103529595A (en) * 2012-07-04 2014-01-22 索尼公司 Display device
US8915606B2 (en) * 2012-07-04 2014-12-23 Sony Corporation Display device
WO2019172483A1 (en) * 2018-03-07 2019-09-12 엘지전자(주) Display device

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