JP2013182076A - Video display device and light emission device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a video display device and a light emission device capable of having a part arranged with good efficiency, for example.SOLUTION: A video display device of the embodiment includes: a housing, a display section, an element, a control section and a substrate. The display section includes a display screen and at least one part is stored in the housing. The light emission section emits light radiating the display section. The element switches the existence of power supply to the light emission section. The control section controls the element to switch the existence of power supply to the element. The substrate includes a first surface and a second surface positioned on the opposite side of the first surface. The substrate is provided with a light emission section and the element.

Description

  Embodiments described herein relate generally to a video display device and a light emitting device.

  2. Description of the Related Art Conventionally, a liquid crystal display device having a light guide plate provided behind a display unit and a plurality of LEDs (light emitting diodes) for backlight that generate light transmitted in the light guide plate is known. .

JP 2006-208722 A

  In this type of device, it is desirable to be able to place the components more efficiently.

  Therefore, an embodiment of the present invention has, as an example, an object of obtaining a video display device and a light emitting device that can arrange components more efficiently.

  An image display apparatus according to an embodiment of the present invention includes a housing, a display unit, a light emitting unit, an element, a control unit, and a substrate. The display unit has a display screen, and at least a part of the display unit is accommodated in the housing. The light emitting unit emits light that irradiates the display unit. The element switches whether power is supplied to the light emitting unit. A control part controls an element and switches the presence or absence of the electric power supply by the said element. The substrate has a first surface and a second surface located on the opposite side of the first surface. The substrate was provided with a light emitting portion and an element.

FIG. 1 is a front view illustrating an example of a video display device according to an embodiment. FIG. 2 is a side view illustrating an example of the video display apparatus according to the embodiment. FIG. 3 is a schematic exploded perspective view of an example of a housing of the video display device according to the embodiment. FIG. 4 is a schematic diagram illustrating an example of the circuit configuration of the control circuit of the video display device and the light emitting device according to the embodiment. FIG. 5 is a plan view illustrating an example of a light-emitting device included in the video display device according to the embodiment. 6 is a cross-sectional view of a part of the issuing device and the housing at the VI-VI position in FIG. FIG. 7 is a cross-sectional view (a cross-sectional view at the same position as FIG. 6) showing a first modification of part of the light emitting device and the housing included in the video display device according to the embodiment. FIG. 8 is a plan view illustrating a second modification of the light emitting device included in the video display device according to the embodiment. 9 is a cross-sectional view taken along the line IX-IX in FIG. FIG. 10 is a plan view illustrating a third modification of the light emitting device included in the video display device according to the embodiment. 11 is a cross-sectional view taken along the line XI-XI in FIG. FIG. 12 is a plan view illustrating a fourth modification of the light emitting device included in the video display device according to the embodiment. FIG. 13 is a plan view illustrating a fifth modification of the light-emitting device included in the video display device according to the embodiment.

  Similar components are included in the following exemplary embodiments and modifications. Therefore, below, the same code | symbol is attached | subjected to the same component, and the overlapping description is partially abbreviate | omitted. Portions included in the embodiments and modifications can be configured by replacing corresponding portions in other embodiments and modifications. In addition, the configuration, position, and the like of the parts included in the embodiments and modifications are the same as those in the other embodiments and modifications unless otherwise specified.

  In some drawings, directions are defined for convenience. The X direction is rightward (leftward in rear view) when viewed from the front of the display screen, the Y direction is upward, and the Z direction is the normal direction of the display screen.

  Moreover, although the case where a video display apparatus is comprised as a television receiver is illustrated in the following embodiment and modification, the video display apparatus concerning this invention is not limited to this. The video display device according to the present invention includes various electronic devices having a display unit with backlight, such as a personal computer, a smart phone, a smart book, a mobile phone, a PDA (personal digital assistant), a display device, and a video phone. Can be configured.

<First Embodiment>
In the present embodiment, as an example, as shown in FIGS. 1 and 2, the video display device 1 (image display device) includes a base portion 3 and a leg portion 5 and an attachment portion 6 on the base portion 3. And a relatively thin flat rectangular main body 2 supported. A rectangular opening 2e is provided on the front surface 2a of the housing 2c of the main body 2, and the display screen 4a of the display unit 4 (display device) accommodated in the housing 2c is provided from the opening 2e. Exposed. The display unit 4 is, for example, a panel (panel unit) such as a liquid crystal display (LCD), an organic EL display (OELD), or a plasma display panel (PDP). As an example, the video display device 1 is configured as a television receiver.

  As an example, the housing 2c includes a front mask 2d (mask, bezel, cover, frame, top, wall, front member, housing member, member) on the front surface 2a side, and a rear cover 2f (cover, cover) on the rear surface 2b side. It is configured by combining divided bodies (members, housing members, wall portions) such as plates, cases, bottoms, wall portions, rear members, housing members, members). The mounting portion 6 (connecting portion, connecting portion, protruding portion) protrudes from the rear surface 2b to the rear side, and is supported by the leg portion 5 so as to be rotatable about the rotation axis C. For example, the housing 2c is made of a metal material, a synthetic resin material, or the like.

  In this embodiment, as an example, as shown in FIG. 3, a display unit 4 (display device, display panel) and a backlight unit 7 (backlight unit, light emitting unit, surface light emitting device) are provided in a housing 2 c. The display unit 8 including the light emitting device is accommodated. After the backlight unit 7 is assembled, the backlight unit 7 and the display unit 4 are assembled, and the display unit 8 can be configured. In FIG. 3, reference numeral 19 denotes an assembly screw.

  The display unit 4 includes a base unit 4b, a panel unit 4c, a source substrate 4d, a source COF 4e (chip on film), a gate COF 4f, and the like.

  The backlight unit 7 includes a back plate 9 (plate, cover, wall, member), a component 10 (light emitting device, light emitting unit, light emitting substrate, light bar), and a reflective layer 11 (cover, cover, sheet, reflective sheet). ), A light guide unit 12 (light guide, diffusion layer, diffusion unit), a prism layer 7a, a polarizing layer 7b, a frame 7c, and the like. The back plate 9, the reflective layer 11, the light guide unit 12, the prism layer 7a, and the polarizing layer 7b all have a flat shape in a front view (in the present embodiment, a rectangular shape as an example), They are stacked in the arrangement shown in FIG.

  In the present embodiment, the component 10 is provided on the side opposite to the display unit 4 of the light guide unit 12 (that is, the rear side and the back side when viewed from the display unit 4 side). In the present embodiment, as an example, a plurality of (four as an example in FIG. 3) parts 10 are positioned between the back plate 9 and the reflective layer 11. The component 10 includes a board 14 (circuit board, printed wiring board, printed board), a plurality of light emitting units 13 (light emitting device, light source component, light source, see FIGS. 5 to 7), and a plurality (in FIG. 3, six as an example). One lens 10a (cover, cover, dimming member). The substrate 14 is provided in parallel with the display unit 4, the light guide unit 12, and the like. The substrate 14 has a surface 14a on the display unit 4 side, and a surface 14b on the opposite side to the surface 14a (on the opposite side to the display unit 4). The board | substrate 14 is comprised by strip | belt shape (strip shape, elongate square shape). The plurality of substrates 14 are provided in a posture along the longitudinal direction of the housing 2c. In addition, the plurality of substrates 14 are provided at intervals in the short direction of the housing 2c. The lens 10a is attached to the surface 14a by bonding, welding, soldering, or the like in a state of covering the light emitting unit 13. The light emitted from the light emitting unit 13 is refracted by the lens 10a, and the light irradiation range (region) is expanded. In the present embodiment, the lens 10a and the light emitting unit 13 are configured as separate parts. However, the same effect can be obtained even when the lens 10a and the light emitting unit 13 are integrated.

  The surface 14 a of the substrate 14 (component 10) is covered with the reflective layer 11. The reflective layer 11 is configured in a flexible sheet shape (film shape, plate shape). The reflective layer 11 has a surface 11a on the display unit 4 side and a surface 11b on the opposite side to the surface 11a (the side opposite to the display unit 4). The reflective layer 11 is provided with a plurality of openings 11c (in this embodiment, as an example, through holes). The light exiting the light emitting unit 13 penetrates the opening 11c to the light guide unit 12 side. Each of the openings 11c is provided corresponding to the lens 10a (light emitting unit 13). In the present embodiment, as an example, in a state where the reflective layer 11 covers the component 10, the lens 10a is exposed from the opening 11c to the light guide unit 12 side.

  The light guide unit 12 includes a surface 12 a (front surface, front surface) on the display unit 4 side and a surface 12 b (rear surface, back surface) on the opposite side to the display unit 4. Light from the component 10 (the lens 10a and the light emitting unit 13) enters the surface 12b, is diffused while traveling through the light guide unit 12, and exits from the surface 12a to the outside of the light guide unit 12. The light emitted from the surface 12a of the light guide unit 12 enters the display unit 4 from the surface 4g (rear surface, back surface) opposite to the display screen 4a through the prism layer 7a and the polarizing layer 7b. That is, in the present embodiment, the backlight unit 7 has a so-called direct type configuration.

  The frame 7 c is made of a material having relatively high rigidity (for example, a metal material) and functions as a housing for the backlight unit 7 and the display unit 8 together with the back plate 9. The back plate 9 has a surface 9a on the display unit 4 side and a surface 9b on the side opposite to the surface 9a (the side opposite to the display unit 4).

  A substrate 15 (second substrate, circuit board, printed wiring board, printed board) is positioned on the side of the back plate 9 opposite to the display unit 4 (on the surface 9b). For example, the substrate 15 is attached to the back plate 9 with a fixture (for example, a screw or the like, not shown) in a state spaced from the surface 9b of the back plate 9. At least a part of the control circuit 17 (see FIG. 4) is configured by components and the like mounted on the substrate 15. The control circuit 17 includes, for example, a video signal processing circuit, a tuner unit, an HDMI (high-definition multimedia interface) signal processing unit, an AV (audio video) input terminal, a remote control signal receiving unit, a control unit (for example, a CPU 17a (central processing unit). )), Selector, on-screen display interface, storage unit (eg, ROM (read only memory), RAM (random access memory), HDD (hard disk drive), etc.), audio signal processing circuit, signal supply unit 17b, etc. The ones without symbols are not shown). The control circuit 17 outputs video (moving images, still images, etc.) on the display screen 4a of the display unit 4, outputs audio from a speaker (not shown), and emits light (elements) in the backlight light emitting unit 13. 18), other light emitting units (for example, LED (light emitting diode)) and the like are controlled. The display unit 4, the speaker, the LED, and the like are examples of the output unit. The substrate 15 can be covered with a shield member 16. The shield member 16 is made of a conductor such as a metal material and covers at least a part of the substrate 15 on the side opposite to the back plate 9.

  In the present embodiment, as an example, as illustrated in FIG. 4, the component 10 includes a substrate 14, a light emitting unit 13, an element 18, a connector 22, and the like. Specifically, for example, the element 18 (switching element, switch, switching element, switching unit) is, for example, a MOS-FET (metal oxide semiconductor-field effect transistor). The light emitting unit 13 is a light source that emits light that irradiates the display device 4 through the light guide unit 12 (illuminates the display device 4). The light emitting unit 13 is, for example, an LED (light emitting diode). The connector 22 (connection portion) is provided on the substrate 14 and is electrically connected to a corresponding connector 21 (connection portion, for example, a connector provided in an FPC (flexible printed circuit)). The connectors 21 and 22 have a power supply terminal electrically connected to the power supply 20 and a signal (ON signal) terminal electrically connected to the signal supply unit 17b (ON signal supply unit). . The signal supply unit 17 b is an element (an integrated circuit or a package) provided (mounted) on the substrate 15. When a signal (in this example, a gate voltage) is applied from the signal supply unit 17b to the element 18 in response to a command from the CPU 17a, a current flows between the source and drain of the element 18, that is, the element 18 is turned on. Is done. Then, current (electric power) is supplied from the power supply 20 to the light emitting unit 13, and the light emitting unit 13 emits light. In FIG. 4, as an example, a configuration in which one element 18 switches light emission and light emission stop of the two light emitting units 13 is shown, but the configuration is not limited thereto. For example, one element 18 may switch on / off of one light emitting unit 13, or one element 18 may switch on / off of three or more light emitting units 13.

  As shown in FIG. 4, in the present embodiment, as an example, the control circuit 17 including the CPU 17 a and the signal supply unit 17 b is positioned on the back side (the side opposite to the display unit 4) of the back plate 9 in the housing 2 c. The element 18 is provided on a different substrate 14 from the substrate 15. Conventionally, the element 18 is provided on the same substrate 15 as one of the control circuits 17 (for example, the signal supply unit 17b). The number of the elements 18 is proportional to the number of the light emitting units 13 and the elements 18 generate heat, so that the elements 18 are separated to some extent. Therefore, the substrate 15 on the back side of the back plate 9 is configured to be relatively large because the element 18 is provided. On the other hand, circuits and components for realizing various functions of the video display device 1 are accommodated on the back side of the back plate 9 in the housing 2c. According to the present embodiment, as an example, since the element 18 can be reduced or eliminated from the substrate 15, the substrate 15 can be configured more compactly. Therefore, as an example, the space on the back side of the back plate 9 in the housing 2c tends to increase the degree of freedom of component layout. As an example, there may be a case where it is easy to ensure the heat dissipation of the element 18 when it is difficult to ensure a sufficient substrate area for heat dissipation of the element 18 in the space behind the back plate 9 in the housing 2c. In the present embodiment, as an example, the element 18 is provided on the same substrate 14 as the light emitting unit 13, but is not limited to this, and the substrate 15 provided with the control circuit 17 in the housing 2 c When a different substrate is provided, the element 18 may be provided on the substrate. The substrate is, for example, a substrate different from the substrates 14 and 15 provided between the power supply 20 or the signal supply unit 17 b and the element 18, a substrate that distributes signals and power to the plurality of substrates 14, and the like.

  In the present embodiment, as an example, as shown in FIG. 5, the substrate 14 is configured in an elongated rectangular (rectangular) plate shape (band shape). A plurality of (six as an example in the present embodiment) light emitting portions 13 are arranged in a row along the longitudinal direction of the substrate 14 in the intermediate portion (in the present embodiment, the central portion as an example) in the width direction of the substrate 14. Are arranged at regular intervals. Each light emitting unit 13 is covered with a lens 10a. For example, the lens 10a has a substantially hemispherical (dome-shaped) appearance, and a space (accommodating portion, gap, chamber) in which the light emitting unit 13 is accommodated is provided. In the present embodiment, as an example, the element 18 is disposed between the plurality of light emitting units 13. The element 18 is located in an intermediate portion (in the present embodiment, a central portion as an example) in the width direction of the substrate 14. Therefore, in the present embodiment, the plurality of light emitting units 13 and the plurality of elements 18 are arranged in a row. In the example of FIG. 5, one element 18 switches the two light emitting units 13 on and off. The light emitting unit 13 and the element 18 are surface-mounted on the surface 14a of the substrate 14 as an example.

  In the present embodiment, as an example, as illustrated in FIG. 6, the light emitting unit 13 and the element 18 are both provided on the surface 14 a of the substrate 14. Therefore, as an example, the conductor pattern (conductor portion) can be provided on the substrate 14 relatively easily. Further, the surface 14 a of the substrate 14, that is, the light guide unit 12 side (display unit 4 side) is covered with the reflective layer 11. The lens 10a protrudes from an opening 11c (second opening) provided in the reflective layer 11. Therefore, the light emitted from the light emitting unit 13 can reach the light guide unit 12. As an example, at least the surface 11a of the reflective layer 11 can be configured as a surface that easily reflects light. In this case, the surface 11a is colored in glossy white as an example. Moreover, the surface 11a can be comprised as a surface which is hard to reflect light as another example. In this case, as an example, the surface 11a is colored black without gloss. Further, as shown in FIG. 6, a convex portion (projecting portion) by the element 18 is provided on the surface 14 a of the substrate 14. In the present embodiment, as an example, since the reflective layer 11 has flexibility, the reflective layer 11 covers the surface 14 a while being bent (bent) along some unevenness of the substrate 14. Can do. In addition, the reflective layer 11 can be comprised in the shape which had an unevenness | corrugation previously. The reflective layer 11 can be fixed to the substrate 14 or the casing (for example, the back plate 9) of the backlight unit 7 by bonding, a fixing tool (for example, a screw), or the like.

  In the present embodiment, as an example, as shown in FIG. 6, the light emitting unit 13, the element 18, and the connector 22 (see FIG. 5) are provided on the surface 14 a of the substrate 14. It is relatively flat. Therefore, in this embodiment, the surface 14b of the board | substrate 14 can be thermally connected to the surface 9a of the backplate 9 through the adhesive agent 23 etc. which have heat conductivity as an example. In the present embodiment, as an example, the surface 14b and the surface 9a are in close contact with each other over a relatively wide range. Therefore, according to this embodiment, as an example, the heat dissipation of the heat generated in the light emitting unit 13 and the element 18 is more likely to increase. In addition, by interposing a member having thermal conductivity and flexibility or elasticity (for example, a synthetic resin material having foaming property) between the substrate 14 and the back plate 9, The back plate 9 can be thermally connected. In this case, even when the surface 14 b of the substrate 14 has some unevenness, heat is easily conducted from the substrate 14 to the back plate 9. Moreover, it can replace with the adhesive agent 23 and can use the adhesive tape (For example, a double-sided tape) with heat conductivity. Moreover, it is desirable that the thermal conductivity (thermal conductivity) of the adhesive 23 and the adhesive tape is higher than the thermal conductivity (thermal conductivity) of the substrate 14.

  As described above, in the present embodiment, the light emitting unit 13 and the element 18 are provided on the substrate 14 as an example. Therefore, according to the present embodiment, as an example, the substrate 15 is easily configured smaller than when the element 18 is provided on the same substrate 15 as the control circuit 17 (CPU 17a, signal supply unit 17b, etc.). . Therefore, as an example, the degree of freedom of component layout in the region where the substrate 15 is provided is likely to increase.

  Moreover, in this embodiment, the light emission part 13 and the element 18 were provided in the surface 14a of the board | substrate 14 as an example. Therefore, according to the present embodiment, as an example, the conductor pattern is more easily provided on the substrate 14 (the surface 14a).

  In the present embodiment, as an example, the substrate 14 is provided with a plurality of light emitting units 13 in a row at intervals, and the element 18 is provided between the plurality of light emitting units 13. Therefore, according to this embodiment, as an example, the substrate 14 is easily configured to be smaller (thin). As an example, the conductor pattern is easily formed relatively easily.

  In the present embodiment, as an example, a flexible reflective layer 11 that covers the substrate 14 is provided between the substrate 14 and the light guide unit 12, and the reflective layer 11 includes a light emitting unit 13. Is provided with an opening 11c through which the light passes to the light guide 12 side. Therefore, according to the present embodiment, as an example, the light guide unit 12 side of the substrate 14 along the irregularities on the surface 14a of the substrate 14 without obstructing the arrival of light from the light emitting unit 13 to the light guide unit 12. The reflective layer 11 can be provided on the surface. Therefore, as an example, due to the effect of the reflective layer 11, unevenness of light (backlight) in the display unit 4, that is, variation in brightness at the location of the display screen 4a is easily reduced.

  In the present embodiment, as an example, the back plate 9 that is thermally connected to the substrate 14 is provided on the opposite side of the substrate 14 from the display unit 4. Therefore, according to the present embodiment, as an example, the heat dissipation of the heat generated in the light emitting unit 13 and the element 18 is more likely to increase.

<First Modification>
The first modification shown in FIG. 7 is the same as the first embodiment except that a reflective layer 11A is provided instead of the reflective layer 11. Therefore, the same effect based on the same configuration can be obtained also in this modification. The reflective layer 11A according to this modification can be used in place of the reflective layer 11 of the first embodiment. The reflective layer 11A is provided with an opening 11d (in the present embodiment, as an example, a through hole), and the element 18 is exposed (projected) from the opening 11d to the light guide 12 side. That is, the element 18 passes through (through) the opening 11d. Therefore, according to this modification, as an example, the reflective layer 11A becomes flatter. In addition, a surface treatment (for example, white color) close to the optical property of the surface of the reflective layer 11A is applied to a portion (for example, part of the surface 14a of the substrate 14 or the element 18) exposed from the opening 11d to the light guide unit 12 side. (Painting with paint etc.) can be given.

<Second Modification>
The second modified example shown in FIGS. 8 and 9 is the same as the first embodiment except that the element 18 is provided on the surface 14b of the substrate 14. Therefore, the same effect based on the same configuration can be obtained also in this modification. The component 10B according to the present modification can be used in place of the component 10 of the first embodiment. The element 18 is surface-mounted on the surface 14 b of the substrate 14. According to this modification, since the element 18 is provided on the surface 14b, as an example, the unevenness of the reflective layer 11 due to the element 18 is likely to be reduced. In addition, since the light emitting unit 13 and the element 18 are arranged more apart from each other, for example, the heat dissipation of the heat generated in the light emitting unit 13 and the element 18 is more likely to be enhanced.

<Third Modification>
The third modification shown in FIGS. 10 and 11 is the same as that of the first embodiment except that an opening 14c is provided in the substrate 14C and at least a part of the element 18C is provided in the opening 14c. It is the same. Therefore, the same effect based on the same configuration can be obtained also in this modification. The component 10C according to the present modification can be used in place of the component 10 of the first embodiment. The surface 18a of the element 18C is provided with a terminal 18b projecting laterally from the surface 18a (outward of the surface 18a in the plan view of FIG. 10). In a state where the element 18C is put in the opening 14c of the substrate 14C, the terminal 18b protrudes from the opening 14c onto the edge (surface 14a), and the terminal 18b and a part of the conductor pattern on the surface 14a are soldered or the like. Are joined and electrically connected. Therefore, according to this modification, as an example, the reflective layer 11 becomes flatter. As an example, the conductor pattern is more easily provided on the substrate 14C (the surface 14a).

<Fourth Modification>
The fourth modified example shown in FIG. 12 is the same as that of the first embodiment except that the element 18 is positioned off the row of the light emitting units 13 on the substrate 14D. Therefore, the same effect based on the same configuration can be obtained also in this modification. According to this modification, as an example, the element 18 and the light emitting unit 13 are located farther apart. Further, in this modification, the element 18 is positioned between the plurality of light emitting units 13 with a line of sight intersecting with the row of the light emitting units 13 and along the surface 14a of the substrate 14D. Therefore, as an example, the heat dissipation of the heat generated in the light emitting unit 13 and the element 18 is more likely to increase. The component 10D according to this modification can be used in place of the component 10 of the first embodiment.

<Fifth Modification>
The fifth modified example shown in FIG. 13 is the same as that of the first embodiment except that the elements 18 are positioned on the substrate 14E so as to be out of the row of the light emitting units 13 and the elements 18 are alternately arranged. It is. Therefore, the same effect based on the same configuration can be obtained also in this modification. In the present modification, the elements 18 that are removed on one side (for example, the upper side of FIG. 13) of the row of the light emitting units 13 and the elements 18 that are detached on the other side (for example, the lower side of FIG. 13) are arranged in the column. Are alternately located along. Also in this modification, the element 18 is positioned between the plurality of light emitting units 13 with a line of sight intersecting with the row of the light emitting units 13 and along the surface 14a of the substrate 14E. Therefore, according to this modification, as an example, the element 18 and the light emitting unit 13 are positioned farther apart, and the elements 18 are positioned farther apart. Therefore, as an example, the heat dissipation property of the heat generated in the light emitting unit 13 and the element 18 is further easily increased. The component 10E according to this modification can be used in place of the component 10 of the first embodiment.

  According to the embodiment and the modification, as an example, it is possible to obtain a video display device and a light emitting device that can arrange components more efficiently.

  As mentioned above, although embodiment and the modification of this invention were illustrated, the said embodiment and modification are an example to the last, Comprising: It is not intending limiting the range of invention. These embodiments and modifications can be implemented in various other forms, and various omissions, replacements, combinations, and changes can be made without departing from the scope of the invention. These embodiments and modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof. It is also possible to partially replace the constituent elements between the embodiments and modifications. In addition, the specifications of each component (structure, type, direction, shape, size, length, width, thickness, height, number, arrangement, position, material, etc.) should be changed as appropriate. Can do. For example, the shape, size, and number of the substrate, the light emitting portion on the substrate, the arrangement of elements, and the like can be changed as appropriate. The substrate can be provided with a plurality of rows of light emitting units, and the plurality of light emitting units can be arranged in different shapes (forms, arrays, patterns). The arrangement of elements can be changed as appropriate. For example, the substrate may have light emitting units and elements arranged in a matrix, and may have a configuration in which the arrangement and density of the light emitting units and elements change depending on the position of the light guide unit. In the embodiment and the modification, the light emitting device is exemplified as a so-called direct-type configuration in which the light emitting unit is positioned on the opposite side of the display unit of the light guide unit. The same applies to a so-called side-edge type configuration in which () is positioned in a plan view (front view) with respect to the display screen and facing (facing) the end portion of the light guide portion. Can do.

  DESCRIPTION OF SYMBOLS 1 ... Video display apparatus, 2c ... Housing | casing, 4 ... Display part, 4a ... Display screen, 9 ... Backplate (wall part), 10, 10B-10E ... Component (light-emitting device), 11, 11A ... Reflective layer (cover) Part), 11c ... opening (second opening), 12 ... light guide part, 13 ... light emitting part, 14, 14C, 14D, 14E ... substrate, 14a ... surface (first surface), 14b ... surface (second) Surface), 14c ... opening, 15 ... substrate (second substrate), 17a ... CPU (control unit), 18, 18C ... element.

Claims (11)

A housing,
A display unit having a display screen and at least a part of which is housed in the housing;
A light emitting unit that emits light for irradiating the display unit;
An element for switching presence / absence of power supply to the light emitting unit;
A control unit for controlling the element and switching the presence or absence of the supply of the power by the element;
A substrate having a first surface and a second surface located on the opposite side of the first surface, wherein the light emitting portion and the element are provided;
A video display device comprising:   The video display device according to claim 1, further comprising a second substrate provided with at least a part of the control unit.   The video display device according to claim 1, wherein the light emitting unit and the element are provided on one of the first surface and the second surface. The substrate is provided with an opening,
The video display device according to claim 3, wherein the element is provided in a state in which at least a part is inserted in the opening.   The said light emission part is provided in one among said 1st surface and said 2nd surface, and said element was provided in the other among said 1st surface and said 2nd surface. Video display device.   The said board | substrate was provided with the said some light emission part in the row form at intervals, The said element was provided among these light emission parts, The Claim 1 any one of Claims 1-5 provided. Video display device.   The said board | substrate is provided with the said some light emission part in the row form at intervals, The said element was provided in the position remove | deviated from the row | line | column of these light emission parts. The video display apparatus as described in any one.   The video display device according to claim 7, wherein the element is located between the plurality of light emitting units with a line of sight intersecting the row and along the first surface or the second surface of the substrate. A flexible cover that covers the display portion side of the substrate is provided;
The video display device according to claim 1, wherein the cover is provided with a second opening through which light from the light emitting unit passes to the display unit side.   The video display device according to claim 1, further comprising a wall portion having thermal conductivity and being thermally connected to the substrate on a side opposite to the display portion of the substrate. . A light emitting unit that emits light for illuminating the display unit;
An element for switching presence / absence of power supply to the light emitting unit;
A substrate having a first surface and a second surface located on the opposite side of the first surface, wherein the light emitting portion and the element are provided;
A light emitting device comprising:

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