JP5208039B2 - Display device and light source device - Google Patents

Description

  The present invention relates to a display device and a light source device that perform image display.

For example, in a display device such as a liquid crystal display device typified by a liquid crystal television or a liquid crystal monitor, a light emitting device called a backlight device is provided to emit light from the back surface of the display panel.
As this type of backlight device, for example, a so-called direct type in which a light source is arranged in a planar shape directly under (back) a display panel is known. This direct type backlight device is excellent in that high luminance can be secured, but the portion directly above the light source is likely to be brighter than the surroundings, and thus uneven luminance tends to occur. Further, in order to promote color mixing, it is necessary to secure a long optical path length from the light source to the irradiated object such as a display panel. Therefore, in the direct type backlight device, the thickness of the device tends to be thick.

  In addition, a light guide plate is provided on the back surface of the display panel, a light source is disposed on two or one side of the light guide plate, and the light incident from the side surface side of the light guide plate is provided by a reflective portion provided on the back side of the light guide plate. There is also known a so-called edge light type backlight device that reflects light to the side. Since this edge light type backlight device can easily secure the optical path length from the light source to the irradiated object such as the display panel, there is an advantage that the device can be made thinner than the direct type backlight device described above. . On the other hand, in the edge-light type backlight device, the light source is attached only to the side of the display panel. For example, in a large display device having a size of 40 inches or more, the amount of light decreases on the side far from the light source. Brightness unevenness is likely to occur.

  Furthermore, since the size of the light guide plate is determined by the size of the display panel, the size of the light guide plate must be increased as the display panel becomes larger. As the size of the light guide plate increases, new problems such as a decrease in the mechanical strength of the light guide plate or an increase in the weight of the light guide plate occur.

  As a prior art described in the publication, a light emitter that emits light in a direction substantially parallel to the display panel surface and a reflector that reflects the light emitted from the light emitter toward the display panel surface are set directly below the display panel. There is a technique in which a plurality of light emitting modules are arranged side by side so that the light emission directions are aligned (see Patent Document 1).

JP 2006-286539 A

  By the way, when the backlight device is configured as in Patent Document 1, for example, the light emitted from the light emitting module is mainly directed to the display panel side, but a part of the light is further located downstream in the emission direction. Proceed to the light emitting module side. Then, the region where the other light emitting modules located on the downstream side in the emission direction of the light emitting module are provided is the light emitted from the other light emitting modules provided on the downstream side in the emission direction to the upstream light emitting module. The light emitted at is added. As a result, the amount of light on the downstream side in the emission direction increases more than the amount of light on the upstream side in the emission direction, and there is a risk of uneven brightness in the planar light output from the backlight device.

  An object of the present invention is to suppress the occurrence of uneven brightness in a light source device or the like in which a plurality of light emitting modules each having a light emitting unit are arranged.

  The present invention is a display device that includes a display panel that displays an image, and a backlight device that is provided on the back surface of the display panel and emits light toward the display panel. A frame extending toward the end side and deployed, a plurality of light emitting elements arranged on the frame and arranged in a direction orthogonal to a direction from one end side to the other end side, and light output from the plurality of light emitting elements A first light-emitting unit that emits light from one end side to the other end side using a plurality of light-emitting elements that are continuously oriented or a first lens member that is adjusted for each light-emitting element; and from the first light-emitting unit A first light emitting module having a first reflecting member that reflects emitted light toward the display panel, and a frame is disposed adjacent to the other end side of the first light emitting module, and from one end side. Toward the other end From one end side using a plurality of light emitting elements arranged in a direction orthogonal to each other and a plurality of light emitting elements that continuously adjust the direction of light output from the plurality of light emitting elements or for each light emitting element. A second light emitting module including a second light emitting unit that emits light toward the end side, and a second reflecting member that reflects the light emitted from the second light emitting unit toward the display panel. The directivity of the first lens member is set higher than the directivity of the second lens member.

In such a display device, the backlight device further includes a diffusing member that diffuses the light emitted from the first light emitting module and the second light emitting module and enters without passing through the light guide plate and emits the light to the display panel side. It can be characterized by comprising.
Moreover, it can be characterized by further comprising an absorber that is provided at an end on the other end side of the frame and absorbs light incident from the first light emitting module and the second light emitting module.

  From another point of view, the present invention is a display device that includes a display panel that displays an image, and a backlight device that is provided on the back surface of the display panel and emits light toward the display panel. The backlight device includes a frame that extends from one end side toward the other end side and a plurality of light emitting elements that are arranged on the frame and arranged in a direction orthogonal to the direction from the one end side toward the other end side. First light emission that emits light from one end side to the other end side using a plurality of continuous light emitting elements or a first lens member that adjusts the direction of light output from the plurality of light emitting elements for each light emitting element. And a first light emitting module having a first reflecting member that reflects the light emitted from the first light emitting unit toward the display panel, and the frame is adjacent to the other end side of the first light emitting module. Arranged to fit, A plurality of light emitting elements arranged in a direction perpendicular to the direction from the end side to the other end side and a direction of light output from the plurality of light emitting elements is adjusted for each of the plurality of continuous light emitting elements or light emitting elements. A second light emitting unit that emits light from one end side to the other end side using the lens member, and a second reflecting member that reflects the light emitted from the second light emitting unit toward the display panel side. And a curvature of the first lens member is set smaller than a curvature of the second lens member.

  In such a display device, the plurality of light-emitting elements constituting the first light-emitting portion and the plurality of light-emitting elements constituting the second light-emitting portion may be light-emitting diodes.

  Furthermore, from another viewpoint, the light source device to which the present invention is applied extends from one end side to the other end side, and is deployed on the frame, and is directed from the one end side to the other end side. From one end side using a plurality of light emitting elements arranged in a direction orthogonal to each other and a plurality of light emitting elements that continuously adjust the direction of light output from the plurality of light emitting elements or a first lens member that adjusts for each light emitting element. A first light emitting module comprising: a first light emitting unit that emits light toward the other end side; and a first reflecting member that reflects the light emitted from the first light emitting unit toward the side opposite to the frame. And a plurality of light emitting elements arranged in a frame so as to be adjacent to the other end side of the first light emitting module and arranged in a direction orthogonal to the direction from the one end side to the other end side, and output from the plurality of light emitting elements Multiple continuous light directions A second light emitting unit that emits light from one end side to the other end side using a second lens member that is adjusted for each element or light emitting element, and a frame that emits light emitted from the second light emitting unit A second light emitting module having a second reflecting member that reflects toward the opposite side, and the directivity of the first lens member is set higher than the directivity of the second lens member. It is a feature.

In such a light source device, the curvature of the second lens member is set larger than the curvature of the first lens member.
Further, the light emitting device may further include a diffusing member that diffuses light emitted from the first light emitting module and the second light emitting module and enters without passing through the light guide plate and emits the light to the outside.

  According to the present invention, it is possible to suppress the occurrence of uneven brightness in a light source device or the like in which a plurality of light emitting modules each having a light emitting unit are arranged.

It is a figure which shows an example of the whole structure of the liquid crystal display device with which embodiment of this invention is applied. It is a figure which shows an example of a structure of a light source device. It is a perspective view for demonstrating an example of a structure of a light emitting module. (A) is a top view of a light emitting module, (b) is AA sectional drawing of (a). It is a figure for demonstrating an example of a structure of a light emission unit. It is a figure for demonstrating the light emission characteristic of the 1st lens-5th lens provided in each of a 1st light emission unit-a 5th light emission unit. It is a figure for demonstrating the behavior of the light in a 2nd light emitting module. It is a figure for demonstrating an example of the relationship between the light radiate | emitted from each of a 1st light emission module-a 5th light emission module, and the arrival area | region of the light in a diffusion plate.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a diagram showing an example of the overall configuration of a liquid crystal display device to which the present embodiment is applied.
The liquid crystal display device includes a liquid crystal display module 20 and a backlight device 10 provided on the back side (lower side in the example shown in FIG. 1) of the liquid crystal display module 20. The liquid crystal display device is actually used in a standing state. In FIG. 1, the vertical direction V and the horizontal direction H when the liquid crystal display device is used are indicated by arrows. Yes. In addition, although the liquid crystal display device illustrated in FIG. 1 has a horizontally long shape that is larger in the horizontal direction H than in the vertical direction V, a configuration having a vertically long shape may be employed.

  The backlight device 10 includes a light source device 11 that irradiates light toward the liquid crystal display module 20 and an optical film having optical transparency with respect to visible light. A diffusing plate (plate or film) 12 as an example of a diffusing member that diffuses and scatters the light, and prism sheets 13 and 14 that are diffraction grating films having a forward light condensing effect. Further, the backlight device 10 is provided with a diffusion / reflection type brightness enhancement film 15 for improving the brightness, if necessary.

  On the other hand, the liquid crystal display module 20 is laminated on each glass substrate of the liquid crystal panel 21 as an example of a display panel configured by sandwiching liquid crystal between two glass substrates, and vibrates light waves. Polarizing plates 22 and 23 are provided for limiting in a predetermined direction. Furthermore, peripheral members such as a driving LSI (not shown) are also attached to the liquid crystal display module 20.

The liquid crystal panel 21 includes various components not shown. For example, two glass substrates are provided with a display electrode (not shown), an active element such as a thin film transistor (TFT), a liquid crystal, a spacer, a sealant, an alignment film, a common electrode, a protective film, a color filter, and the like. Yes.
The structural unit of the backlight device 10 is arbitrarily selected. For example, there may be a distribution form in which only the light source device 11 is called a “backlight device” and does not include the diffusion plate 12, the prism sheets 13 and 14, the brightness enhancement film 15, and the like.

  FIG. 2 is a view for explaining an example of the configuration of the light source device 11, and shows a top view of the light source device 11 as viewed from the upper side of FIG. In the present embodiment, a backlight structure is employed in which the light source device 11 is disposed immediately below the back surface of the liquid crystal display module 20. Note that the backlight device 10 according to the present embodiment does not include a so-called light guide plate (light guide).

  The light source device 11 includes a backlight frame 31 that opens toward the front side in the figure, a light emitting device 32 that is accommodated in the backlight frame 31 and emits light toward the front side in the figure, and an external power source (not shown). A power supply cable 33 that supplies power to the light emitting device 32 is provided.

  The backlight frame 31 has a housing structure formed of, for example, aluminum, magnesium, iron, or a metal alloy containing them. As such a housing structure, the backlight frame 31 is provided corresponding to the size of the liquid crystal display module 20 shown in FIG. 1 and extends in the vertical direction V and the horizontal direction H, and the front side from the back side. It protrudes toward the side, and has a side part that surrounds the four corners of the back part. And the white polyester film etc. are stuck on the inner side surface part of the housing | casing structure, for example, and it functions also as a reflector. Here, “extending in the vertical direction V” means that the back surface portion of the backlight frame 31 has a height in the vertical direction when the liquid crystal display device is erected.

  The light emitting device 32 includes a plurality of (five in the present embodiment) light emitting modules 40 (specifically, 40a to 40e) each extending in the horizontal direction H and arranged in the vertical direction V. ing. In the following description, these are referred to as a first light emitting module 40a, a second light emitting module 40b, a third light emitting module 40c, a fourth light emitting module 40d, and a fifth light emitting module 40e, respectively, as necessary. To do. As shown in FIG. 2, the first light emitting module 40a is located on the lowermost side (Bottom side) in the vertical direction V, and the fifth light emitting module 40e is located on the uppermost side (Top side) in the vertical direction V. The first light emitting module 40a, the second light emitting module 40b, the third light emitting module 40c, the fourth light emitting module 40d, and the fifth light emitting module 40e are arranged in this order from the bottom side to the top side. Further, in the present embodiment, each of the first light emitting module 40a to the fifth light emitting module 40e emits light from the bottom side to the top side, that is, the vertical direction V, and the light emitted from each is shown in the drawing. It is configured to reflect toward the front side. In this embodiment, “Bottom side” corresponds to one end side, and “Top side” corresponds to the other end side.

  The power supply cable 33 is configured by a flexible flat cable that can be folded, and is provided inside the backlight frame 31 and on the right side in the drawing. One end of the power supply cable 33 is a connector (not shown) for receiving power from the outside of the light source device 11, and the other end is a connector provided for each of the first light emitting module 40a to the fifth light emitting module 40e. 43, respectively.

  In addition, an absorber 35 is provided on the inner side of the top side of the backlight frame 31. The absorber 35 absorbs light incident on the top side end portion of the backlight frame 31 from the light emitting device 32. And this absorber 35 is comprised by attaching the plate-shaped member which exhibits black to the side surface inside the Top side of the backlight frame 31. As shown in FIG. In addition, you may form the absorber 35 by the coating using the coating material etc. which exhibit black, for example.

  Next, the configuration of the light emitting module 40 will be described. Here, first, a configuration common to the first light emitting module 40a to the fifth light emitting module 40e will be described as the light emitting module 40, and then, a unique configuration in each of the first light emitting module 40a to the fifth light emitting module 40e. I will explain.

FIG. 3 is a perspective view for explaining an example of the configuration of the light emitting module 40. 4A is a top view of the light emitting module 40 shown in FIG. 3, and FIG. 4B is a cross-sectional view taken along line AA of FIG. 4A.
The light emitting module 40 includes a plurality of light emitting diodes (referred to as LEDs in the following description) as an example of a plurality of light emitting elements arranged along the horizontal direction H, and is directed in the vertical direction V, that is, from the bottom side to the top side. A light emitting part 41 that emits light, a wiring board 42 that includes a wiring to which the light emitting part 41 is attached and supports the light emitting part 41 and that supplies power to the plurality of LEDs of the light emitting part 41, and a horizontal direction H of the wiring board 42 And a connector 43 that feeds power to the plurality of LEDs of the light emitting unit 41 via the wiring board 42.

  The light emitting module 40 is fixed to the top side of the light emitting unit 41 on the mounting surface side of the light emitting unit 41 in the wiring board 42, and the light emitted from the light emitting unit 41 is directed toward the diffusion plate 12 (see FIG. 1). A reflecting plate 44 that reflects and a light emitting module 40 that is formed on the top side of the reflecting plate 44 and is adjacent to the light emitting device 32 (see FIG. 2) (for example, the second light emitting module 40b in the case of the first light emitting module 40a). ) Provided on the light-emitting portion 41 toward the diffusion plate 12 (see FIG. 1), an adjustment member 45 that adjusts the amount of light transmitted, that is, the amount of light, and the horizontal direction H on the reflection plate 44 near the light-emitting portion 41. And an absorption portion 46 that absorbs part of the light incident from the light emitting portion 41.

  Among these, the light emitting unit 41 includes a plurality of light emitting units 50 arranged in a line along the horizontal direction H. Each light emitting unit 50 includes four LEDs arranged in a line along the horizontal direction H.

Further, the wiring board 42 is configured by so-called FPC (Flexible Printed Circuits), and an electrode exposed on one side of the wiring board and an electrode provided on each light emitting unit 50 are connected and fixed by solder. ing.
Further, the connector 43 is connected and fixed to the wiring board 42 by crimping or soldering.

  Moreover, the reflecting plate 44 is made of a white resin. As a material constituting the reflecting plate 44, for example, a PET (polyethylene terephthalate) resin containing titanium dioxide as a white pigment can be used.

  The reflecting plate 44 includes a rectangular first reflecting portion 44a and a rectangular second reflecting portion 44b that is inclined and extended from one long side of the first reflecting portion 44a. . Here, the first reflecting portion 44 a is arranged on the mounting surface side of the light emitting portion 41 of the wiring board 42 so that the long side is along the horizontal direction H on the top side of the light emitting portion 41. Moreover, the absorption part 46 mentioned above is attached to the 1st reflection part 44a. On the other hand, the second reflecting portion 44b is disposed so as to be inclined from the top-side end portion of the first reflecting portion 44a to the side blocking the path of the light emitted from the light emitting portion 41. That is, the second reflecting portion 44 b is formed so as to move away from the backlight frame 31 as the distance from the light emitting portion 41 increases. In the present embodiment, the angle θ formed by the extension line of the surface of the first reflecting portion 44a and the surface of the second reflecting portion 44b is set to be about 15 °. The angle θ is preferably selected from the range of 10 ° to 20 °.

  Further, the adjustment member 45 is made of a white resin, like the reflection plate 44. As a material constituting the adjusting member 45, for example, a material in which titanium dioxide is contained as a white pigment in a PET (polyethylene terephthalate) resin can be used.

  And the adjustment member 45 is arrange | positioned so that the long side may follow the horizontal direction H on the Top side rather than the 2nd reflection part 44b. Here, the upper surface of the adjustment member 45 is provided substantially parallel to the first reflecting portion 44a while forming a space below from the top side of the second reflecting portion 44b toward the top side.

The adjustment member 45 configured as described above is provided so as to cover the light emitting unit 41 of the adjacent light emitting module 40 when the light emitting device 32 is configured by arranging the first light emitting module 40a to the fifth light emitting module 40e. For example, as shown in FIG. 4B, the adjustment member 45 provided in the first light emitting module 40a is arranged so as to cover the light emitting portion 41 of the adjacent second light emitting module 40b on the diffusion plate 12 side. . Here, the adjustment member 45 is formed such that the thickness gradually decreases from the one end side 45a on the bottom side toward the other end side 45b on the top side. And the adjustment member 45 has the thickness which can adjust and permeate | transmit the light radiate | emitted from the light emission part 41 of the adjacent light emitting module 40 between the one end side 45a and the other end side 45b suitably.
In the present embodiment, the reflector 44 and the adjustment member 45 are integrated.

  The absorbing portion 46 is provided on the top side of the light emitting portion 41 in the first reflecting portion 44 a and has its long side along the horizontal direction H. In addition, the absorber 46 is provided with a predetermined width from the vicinity of the light emitting unit 41 toward the light irradiation direction (from the bottom side to the top side). The absorbing portion 46 is formed by painting the first reflecting portion 44a with a gray paint or the like. In addition, it is preferable that the color which the absorption part 46 exhibits is N5 or more and N7 or less by the brightness (achromatic color) defined by the Munsell color system. The absorption unit 46 configured as described above absorbs a part of the light incident from the light emitting unit 41 and reflects the rest toward the diffusion plate 12 side. In addition, about the absorption part 46, the member which has the said structure other than the coating mentioned above may attach to the 1st reflection part 44a.

  FIG. 5 is a diagram for explaining an example of the configuration of the light emitting unit 50. 5A is a front view of the light emitting unit 50 viewed from the top side, and FIG. 5B is a light emitting unit 50 provided in the first light emitting module 40a (in the following description, the first light emitting unit 50a and 5 (c) is a side view of the light emitting unit 50 (referred to as the second light emitting unit 50b in the following description) provided in the second light emitting module 40b, and FIG. FIG. 5 (e) is a side view of a light emitting unit 50 (referred to as a third light emitting unit 50c in the following description) provided in the third light emitting module 40c, and FIG. FIG. 5F is a side view of the light emitting unit 50 (referred to as the fifth light emitting unit 50e in the following description) provided in the fifth light emitting module 40e. FIG, respectively.

  The light emitting unit 50 is formed in a rectangular shape, and includes four plate-like substrates 51 on which wiring (not shown) is formed, and four light-emitting units 50 that are mounted in a line on the top-side surface (referred to as a surface in the following description) of the plate-like substrate 51. LED52. In addition, the light emitting unit 50 includes a white resist film 53 formed on the surface side of the plate-like substrate 51 except for the periphery of the mounting position of each LED 52, and four LEDs 52 on the surface side of the plate-like substrate 51. And four lenses 54 for covering each of the above. The four LEDs 52 are, from the left side in FIG. 5A, a red LED 52R that emits red light, a first green LED 52Ga that emits green light, a blue LED 52B that emits blue light, and a second green LED 52Gb that emits green light. ing. With this arrangement, when the light emitting unit 41 (see FIG. 3) is configured by arranging a plurality of light emitting units 50 in a line, red, green, blue, green, red, green, blue, green, red, The LEDs 52 are arranged in this order. That is, red and blue are alternately arranged between every other green.

  Here, in the present embodiment, a lens 54 (referred to as the first lens 54a in the following description) provided in the first light emitting unit 50a constituting the first light emitting module 40a and a second light emitting module 40b. The lens 54 (referred to as the second lens 54b in the following description) provided in the second light emitting unit 50b and the lens 54 (referred to as the third lens 54c in the following description) provided in the third light emitting unit 50c constituting the third light emitting module 40c. And the fifth light emitting unit 50e constituting the fifth light emitting module 40e and the lens 54 provided in the fourth light emitting unit 50d constituting the fourth light emitting module 40d (hereinafter referred to as the fourth lens 54d). In each of the provided lenses 54 (referred to as the fifth lens 54e in the following description) Although the exit surface of the light from LED52 is in terms that a curved surface is common, each having a curved surface is different.

  More specifically, each of the first lens 54a to the fifth lens 54e is set to have a circular shape with a bottom surface having a diameter D, and the height of the first lens 54a to the fifth lens 54e is the first height Ha in the first lens 54a. In addition, the second lens 54b has a second height Hb, the third lens 54c has a third height Hc, the fourth lens 54d has a fourth height Hd, and the fifth lens 54e has a fourth height Hd. The fifth height He is set. Here, Ha> Hb> Hc> Hd> He.

  FIG. 6 is a diagram for explaining the light emission characteristics of the first lens 54a to the fifth lens 50e provided in each of the first light emitting unit 50a to the fifth light emitting unit 50e. 6A shows the first light emitting unit 50a, FIG. 6B shows the second light emitting unit 50b, FIG. 6C shows the third light emitting unit 50c, and FIG. 6D shows the fourth light emitting unit 50b. FIG. 6E illustrates the light emitting unit 50d, and FIG. 6E illustrates the fifth light emitting unit 50e.

  In the present embodiment, the second lens 54b provided on the second light emitting unit 50b adjacent to the top side is more than the first lens 54a provided on the first light emitting unit 50a on the most bottom side. It has a flat shape. In addition, the third lens 54c provided in the third light emitting unit 50c adjacent to the Top side has a flatter shape than the second lens 54b provided in the second light emitting unit 50b. Furthermore, the fourth lens 54d provided in the fourth light emitting unit 50d adjacent to the Top side has a flatter shape than the third lens 54c provided in the third light emitting unit 50c. Furthermore, the fifth lens 54e provided in the fifth light emitting unit 50e on the top side and the top side is flatter than the fourth lens 54d provided in the fourth light emitting unit 50d. It has become.

  Therefore, in the present embodiment, the curvature of the second lens 54b is set larger than that of the first lens 54a, the curvature of the third lens 54c is set larger than that of the second lens 54b, and the third lens 54c. The curvature of the fourth lens 54d is set to be larger than that of the fourth lens 54d, and the curvature of the fifth lens 54e is set to be larger than that of the fourth lens 54d.

  More specifically, the radius of curvature of the region of the second lens 54b that is directly above the LED 52 is set to be larger than the radius of curvature of the region of the first lens 54a that is directly above the LED 52. Further, the radius of curvature of the region of the third lens 54c that is directly above the LED 52 is set to be larger than the radius of curvature of the region of the second lens 54b that is directly above the LED 52. Further, the radius of curvature of the region of the fourth lens 54d that is directly above the LED 52 is set to be larger than the radius of curvature of the region of the third lens 54c that is directly above the LED 52. Furthermore, the radius of curvature of the region of the fifth lens 54e that is directly above the LED 52 is set to be larger than the radius of curvature of the region of the fourth lens 54d that is directly above the LED 52.

  For this reason, compared with the light emitted from the LED 52 through the first lens 54a in the first light emitting unit 50a that constitutes the first light emitting module 40a, the LED 52 in the second light emitting unit 50b that constitutes the second light emitting module 40b. Since the directivity of the light emitted through the second lens 54b is reduced, the light is output to the outside in a more expanded state. In addition, compared with the light emitted from the LED 52 through the second lens 54b in the second light emitting unit 50b constituting the second light emitting module 40b, the second light emitting unit 50c constituting the third light emitting module 40c has the second light emitting unit 50b. Since the directivity of the light emitted through the three lenses 54c decreases, it is output to the outside in a more expanded state. Furthermore, compared with the light emitted from the LED 52 through the third lens 54c in the third light emitting unit 50c constituting the third light emitting module 40c, the fourth light emitting unit 50d constituting the fourth light emitting module 40d is changed from the LED 52 to the second light emitting unit 50c. Since the directivity of the light emitted through the four lenses 54d is reduced, the light is output to the outside in a more expanded state. Furthermore, compared with the light emitted from the LED 52 through the fourth lens 54d in the fourth light emitting unit 50d constituting the fourth light emitting module 40d, the LED 52 of the fifth light emitting unit 50e constituting the fifth light emitting module 40e is compared. Since the directivity of the light emitted through the fifth lens 54e decreases, it is output to the outside in a more expanded state.

  Here, for example, when the first light emitting module 40a is viewed as the first light emitting module, the second light emitting module 40b becomes the second light emitting module. Accordingly, in the first light emitting module 40a, the light emitting unit 41 configured by arranging a plurality of first light emitting units 50a functions as the first light emitting unit, and the first lens 54a functions as the first lens. Further, in the second light emitting module 40b, the light emitting unit 41 configured by arranging a plurality of second light emitting units 50b functions as a second light emitting unit, and the second lens 54b functions as a second lens.

  On the other hand, for example, when the fourth light emitting module 40d is viewed as the first light emitting module, the fifth light emitting module 40e is the second light emitting module. Accordingly, in the fourth light emitting module 40d, the light emitting unit 41 configured by arranging a plurality of fourth light emitting units 50d functions as the first light emitting unit, and the fourth lens 54d functions as the first lens. In the fifth light emitting module 40e, the light emitting unit 41 configured by arranging a plurality of fifth light emitting units 50e functions as a second light emitting unit, and the fifth lens 54e functions as a second lens.

  Although not described here any more, the same relationship holds between the second light emitting module 40b and the third light emitting module 40c and between the third light emitting module 40c and the fourth light emitting module 40d.

Next, the light emission operation of the backlight device 10 according to the present embodiment will be described with reference to FIGS.
Power is supplied from the power source (not shown) to the first light emitting module 40a to the fifth light emitting module 40e constituting the light emitting device 32 via the power supply cable 33. Then, for example, in the first light emitting module 40a, currents are respectively supplied to the red LED 52R, the first green LED 52Ga, the blue LED 52B, and the second green LED 52Gb provided in each light emitting unit 50 constituting the light emitting unit 41 via the wiring board 42. Flowing. As a result, red (R), green (G), and blue (B) light is emitted from the red LED 52R, the first green LED 52Ga, the blue LED 52B, and the second green LED 52Gb of each light emitting unit 50 through the first lens 54a. It is emitted toward the Top side.

  The RGB light emitted from each light emitting unit 50 toward the top side is mixed as it travels through the backlight frame 31 to become white light. The mixed white light is reflected by the reflection plate 44 and travels toward the diffusion plate 12 side. In the other second light emitting module 40b to fifth light emitting module 40e, white light emitted and mixed in the same procedure is directed toward the diffusion plate 12 side. The white light incident on the diffusion plate 12 is further mixed in color and made uniform in luminance by the diffusion plate 12, then passes through the prism sheets 13 and 14 and the luminance enhancement film 15 and is emitted toward the liquid crystal display module 20. Is done.

  In the backlight device 10 of the present embodiment, the light emitting units 41 provided in each of the first light emitting module 40a to the fifth light emitting module 40e are in a direction substantially parallel to the panel surface of the liquid crystal panel 21 of the liquid crystal display module 20. The light is emitted, and the reflection plate 44 provided in each of the first light emitting module 40 a to the fifth light emitting module 40 e reflects the light emitted from each light emitting unit 41 toward the liquid crystal panel 21. Thereby, in the 1st light emission module 40a-the 5th light emission module 40e, sufficient optical path length is ensured so that the light of each RGB color radiate | emitted from the light emission part 41 may be mixed. Therefore, for example, sufficient color mixing can be performed even if the distance between the light emitting unit 41 and the diffusing plate 12 is shortened, so that the backlight device 10 can be thinned.

FIG. 7 is a diagram for explaining the behavior of light in the second light emitting module 40b.
For convenience of explanation, of the light emitted from the light emitting unit 41 of the second light emitting module 40b, the light directed to the first reflecting unit 44a of the second light emitting module 40b is referred to as the first emitted light Bm1, the second light emitting module. The light directed to the second reflecting portion 44b of 40b is second emitted light Bm2, and the light directed to the adjusting member 45 of the first light emitting module 40a disposed adjacent to the bottom side of the second light emitting module 40b is third. The outgoing light Bm3 and the light traveling toward the absorption part 46 of the second light emitting module 40b are referred to as fourth outgoing light Bm4.
Here, the behavior of light in the second light emitting module 40b will be described, but the same applies to the other first light emitting modules 40a and the third light emitting module 40c to the fifth light emitting module 40e.

First, the behavior of the first outgoing light Bm1 and the second outgoing light Bm2 will be described.
As shown in FIG. 7, the first outgoing light Bm1 emitted from the light emitting unit 41 is reflected by the first reflecting unit 44a. At this time, a part of the first outgoing light Bm1 is diffusely reflected by the first reflecting portion 44a and travels toward the diffusion plate 12. Further, a part of the first outgoing light Bm1 is specularly reflected by the first reflecting portion 44a and travels toward the top side toward the diffusion plate 12.
Further, the second emitted light Bm2 emitted from the light emitting unit 41 is reflected by the second reflecting unit 44b. At this time, a part of the second outgoing light Bm2 is diffusely reflected by the second reflecting portion 44b and travels toward the diffusion plate 12. Part of the second outgoing light Bm2 is specularly reflected by the second reflecting portion 44b and travels toward the top side toward the diffusion plate 12.

Here, the light emitted from the LED 52 is diffused light. Due to the nature of the diffused light, the light emitting unit of the second light emitting module 40b is closer to the light emitting unit 41 (each light emitting unit 50), that is, the region on the Bottom side. On the side far from 41, that is, the top side, the light intensity is low. In the present embodiment, in consideration of the nature of the diffused light, the first reflecting portion 44a whose reflecting surface is substantially parallel to the optical axis direction of the light emitting portion 41 on the side close to the light emitting portion 41 of the reflecting plate 44. And the ratio of the amount of reflected light toward the diffuser 12 is reduced. On the other hand, a second reflecting portion 44b that is inclined with respect to the optical axis direction of the light emitting portion 41 is positioned on the side far from the light emitting portion 41 so as to increase the ratio of the amount of reflected light toward the diffuser plate 12.
By adopting such a configuration, the amount of light reflected by the reflector 44 is made uniform in each of the first light emitting module 40a to the fifth light emitting module 40e including the second light emitting module 40b.

Next, the behavior of the third emitted light Bm3 will be described.
As shown in FIG. 7, a part of the third emitted light Bm3 emitted from the light emitting unit 41 is absorbed or reflected by the adjusting member 45 of the first light emitting module 40a adjacent to the Bottom side. Of the third outgoing light Bm3, light that is not reflected by the adjustment member 45 and is not absorbed by the adjustment member 45 passes through the adjustment member 45 and travels toward the diffusion plate 12. Here, in the adjustment member 45, the one end side 45a close to the light emitting portion 41 is made thick so that the third emitted light Bm3 is hardly transmitted in the vicinity of the light emitting portion 41 having high light intensity. On the other hand, the adjustment member 45 transmits light so that the thickness of the other end side 45b far from the light emitting portion 41 is thinner than that of the one end side 45a, and the light intensity is reduced by moving away from the light emitting portion 41. It is easy to make it.

  Thereby, in each of the first light emitting module 40a to the fifth light emitting module 40e including the second light emitting module 40b, the adjustment member 45 is provided, so that the light amount near the upper part of the region where the light emitting unit 41 is provided is different from the other. It suppresses that it increases remarkably compared with the area. Further, the adjustment member 45 is configured so as not to absorb or reflect all the third outgoing light Bm3 emitted from the light emitting unit 41 and to block it. For this reason, in each of the first light emitting module 40a to the fifth light emitting module 40e including the second light emitting module 40b, by providing the adjusting member 45, the amount of light near the upper portion of the region where the adjusting member 45 is disposed is different. The situation of significantly less than the area of is avoided.

Next, the behavior of the fourth outgoing light Bm4 will be described.
As shown in FIG. 7, a part of the fourth emitted light Bm4 emitted from the light emitting unit 41 is absorbed by the absorbing unit 46. Further, a part of the fourth outgoing light Bm4 is reflected by the absorber 46 and travels toward the diffusion plate 12.
As described above, due to the nature of the diffused light, the amount of light in the vicinity of the light emitting unit 41 is larger than in other regions. Further, among the light emitted from the light emitting unit 41, the incident angle of the light that enters the side closer to the light emitting unit 41 in the first reflecting unit 44 a becomes smaller, so that the light regularly reflected by the first reflecting unit 44 a is reduced. The reflection angle is also reduced. Therefore, the light that is regularly reflected on the side near the light emitting unit 41 in the first reflecting unit 44a is likely to concentrate near the light emitting unit 41 in the diffuser plate 12, for example. Therefore, the amount of light near the upper part of the light emitting unit 41 is likely to increase as compared with other regions.

  On the other hand, in each of the first light emitting module 40a to the fifth light emitting module 40e including the second light emitting module 40b, by providing the absorbing portion 46 in the emission direction of the light emitting portion 41, that is, on the Top side and in the vicinity of the light emitting portion 41, The amount of light emitted from the light emitting unit 41 is adjusted and then reflected toward the diffusion plate 12 side. Thereby, it is suppressed that the light quantity of the just upper part of the light emission part 41 vicinity becomes large compared with another area | region. Furthermore, as described above, the absorption unit 46 is configured not to absorb all the fourth outgoing light Bm4 incident from the light emitting unit 41 but to reflect a part thereof. Therefore, in each of the first light emitting module 40a to the fifth light emitting module 40e including the second light emitting module 40b, the amount of light immediately above the region where the absorbing portion 46 is provided is significantly reduced compared to other regions. Suppressed.

  As described above, in the present embodiment, by devising the configuration of the first light emitting module 40a to the fifth light emitting module 40e, the luminance unevenness in the region immediately above the first light emitting module 40a to the fifth light emitting module 40e. We are trying to suppress it.

FIG. 8 is a diagram for explaining an example of the relationship between the light emitted from each of the first light emitting module 40 a to the fifth light emitting module 40 e and the light arrival region on the diffusion plate 12.
In the following description, in the diffusing plate 12, the region directly above the first light emitting module 40a is defined as the first region A1, and the region directly above the second light emitting module 40b is defined as the second region A2. The region directly above the light emitting module 40c is the third region A3, the region directly above the fourth light emitting module 40d is the fourth region A4, and the region directly above the fifth light emitting module 40e is the fifth region A5. Call.

  In the following description, the light output from the first light emitting module 40a is output from the first light L1, the light output from the second light emitting module 40b is output from the second light L2, and the third light emitting module 40c. The light output from the fourth light emitting module 40d is referred to as fourth light L4, and the light output from the fifth light emitting module 40e is referred to as fifth light L5.

  For example, the first light L1 emitted from the first light emitting module 40a is mainly the first main light LM1 directed to the first region A1 located immediately above the first light L1. A part of the first light L1 is in the first region A1. Instead, the first auxiliary light LS1 is directed to the second region A2 to the fifth region A5 on the top side, that is, on the downstream side in the emission direction. Further, for example, the second light L2 emitted from the second light emitting module 40b is mainly the second main light LM2 directed to the second region A2 located immediately above the second light L2 but a part thereof is Top. The second auxiliary light LS2 travels toward the third region A3 to the fifth region A5 on the side. Further, for example, the third light L3 emitted from the third light emitting module 40c is mainly the third main light LM3 directed to the third region A3 located immediately above the third light L3, but a part thereof is Top. The third auxiliary light LS3 is directed toward the fourth region A4 and the fifth region A5 that are on the side. Furthermore, for example, the fourth light L4 emitted from the fourth light emitting module 40d is mainly the fourth main light LM4 directed to the fourth region A4 located immediately above the fourth light L4. The fourth auxiliary light LS4 travels toward the fifth region A5 on the top side. For example, the light emitted from the fifth light-emitting module 40e is mainly the fifth main light LM5 directed to the fifth region A5 located immediately above the fifth light-emitting module 40e, and part of the light is on the top side. The fifth auxiliary light LS <b> 5 is directed to the inner side of the top side of the light frame 31.

  Further, not all of the light directed from each of the first light emitting module 40a to the fifth light emitting module 40e toward the diffusion plate 12 is incident on the diffusion plate 12, and a part of the light is reflected on the light emission device 32 side by the diffusion plate 12. The At this time, since the light emitting units 41 provided in each of the first light emitting module 40a to the fifth light emitting module 40e emit light from the bottom side to the top side, much of the reflected light from the diffusion plate 12 Goes from the Bottom side to the Top side.

  Therefore, the first region A1 is basically irradiated with the first main light LM1, whereas the second region A2 is added to the second main light LM2 from the bottom side in addition to the second main light LM2. A part of the incident first sub-light LS1 is also irradiated. In addition to the third main light LM3, the third region A3 is also irradiated with a part of the second sub-light LS2 and the first sub-light LS1 incident from the bottom side. Become. Further, in the fourth area A4, in addition to the fourth main light LM4, one of the third sub light LS3, the second sub light LS2, and the first sub light LS1 incident from the bottom side. The part will also be irradiated. Furthermore, in the fifth region A5, in addition to the fifth main light LM5, the fourth sub-light LS4, the third sub-light LS3, the second sub-light LS2, and the second sub-light LS2 that enter from the bottom side. A part of the first auxiliary light LS1 is irradiated.

  For this reason, even if the configuration of each of the first light emitting module 40a to the fifth light emitting module 40e is devised, when the backlight device 10 is configured using these, light is emitted on the Top side rather than the Bottom side. As a result, the amount of light on the Top side is likely to be larger than that on the Bottom side. As a result, the brightness on the Bottom side is lower than that on the Top side, and there is a risk of uneven brightness in the vertical direction V.

  On the other hand, in the present embodiment, as described with reference to FIGS. 5 and 6, the first lens 54 a provided in the first light emitting module 40 a closest to the bottom side in the light emitting device 32 is the first lens 54 a. The second lens 54b provided in the second light emitting module 40b adjacent to the top side of the light emitting module 40a has a larger curvature. In addition, the third lens 54c provided in the third light emitting module 40c adjacent to the top side of the second light emitting module 40b has a larger curvature than the second lens 54b provided in the second light emitting module 40b. . Furthermore, the fourth lens 54d provided in the fourth light emitting module 40d adjacent to the top side of the third light emitting module 40c has a larger curvature than the third lens 54c provided in the third light emitting module 40c. . Furthermore, compared to the fourth lens 54d provided in the fourth light emitting module 40d, the fifth lens 54e provided in the fifth light emitting module 40e located on the top side and the top side of the fourth light emitting module 40d, The curvature is larger.

  Here, for example, it is assumed that the light amounts of the first light L1 to the fifth light L5 output from each of the first light emitting module 40a to the fifth light emitting module 40e are the same.

  In this case, since the first light emitting module 40a on the bottom side uses the first lens 54a having the smallest curvature, the directivity of the first light L1 output from each LED 52 via the first lens 54a. Becomes higher. As a result, most of the first light L1 travels toward the second reflecting portion 44b (see FIG. 4) provided in the first light emitting module 40a and is reflected by the second reflecting portion 44b. Therefore, most of the first light L1 output from the first light emitting module 40a becomes the first main light LM1, and the remaining part becomes the first sub-light LS1.

  Further, in the second light emitting module 40b adjacent to the top side of the first light emitting module 40a, the second lens 54b having a curvature larger than that of the first lens 54a is used, so that the output from each LED 52 through the second lens 54b. The directivity of the second light L2 is lower than that of the first light L1. From the opposite viewpoint, the diffusivity of the second light L2 is higher than that of the first light L1. As a result, a part of the second light L2 (the ratio is lower than that of the first light L1) is directed to the second reflecting portion 44b (see FIG. 4) provided in the second light emitting module 40b. Reflected by the second reflecting portion 44b. For this reason, a part of the light output from the second light emitting module 40b (the ratio is lower than that of the first light L1) becomes the second main light LM2, and the rest (more than the first light L1). However, the second auxiliary light LS2 is obtained.

  Further, in the third light emitting module 40c adjacent to the top side of the second light emitting module 40b, the third lens 54c having a curvature larger than that of the second lens 54b is used, so that the output from each LED 52 through the third lens 54c. The directivity of the third light L3 is lower than that of the second light L2. From the opposite viewpoint, the diffusibility of the third light L3 is higher than that of the second light L2. As a result, a part of the third light L3 (the ratio is lower than that of the second light L2) is directed to the second reflecting portion 44b provided in the third light emitting module 40c, and this second reflecting portion. Reflected at 44b. For this reason, a part of the light output from the third light emitting module 40c (the ratio is lower than that of the second light L2) becomes the third main light LM3, and the rest (more than the second light L2). However, the third auxiliary light LS3 is obtained.

  Furthermore, since the fourth light emitting module 40d adjacent to the top side of the third light emitting module 40c uses the fourth lens 54d having a curvature larger than that of the third lens 54c, each LED 52 passes through the fourth lens 54d. The directivity of the output fourth light L4 is lower than that of the third light L3. From the opposite viewpoint, the diffusivity of the fourth light L4 is higher than that of the third light L3. As a result, a part of the fourth light L4 (the ratio is lower than that of the third light L3) goes to the second reflecting portion 44b provided in the fourth light emitting module 40d, and this second reflecting portion. Reflected at 44b. For this reason, a part of the light output from the fourth light emitting module 40d (the ratio is lower than that of the third light L3) becomes the fourth main light LM4, and the rest (more than the third light L3). The ratio is increased), but becomes the fourth auxiliary light LS4.

  In the fifth light emitting module 40e located on the top side and the top side of the fourth light emitting module 40d, the fifth lens 54e having a larger curvature than the fourth lens 54d is used. The directivity of the fifth light L5 output through the lens 54e is lower than that of the fourth light L4. From the opposite viewpoint, the diffusivity of the fifth light L5 is higher than that of the fourth light L4. As a result, a part of the fifth light L5 (the ratio is lower than that of the fourth light L4) is directed to the second reflecting portion 44b provided in the fifth light emitting module 40e, and this second reflecting portion. Reflected at 44b. For this reason, a part of the light output from the fifth light emitting module 40e (the ratio is lower than that of the fourth light L4) becomes the fifth main light LM5, and the rest (more than the fourth light L4). The ratio is increased), but becomes the fifth auxiliary light LS5.

  As described above, in the present embodiment, the first light emitting module 40a to the fifth light emitting module 40e are devised in the shapes of the first lens 54a to the fifth lens 54e provided in the first light emitting module 40a to the fifth light emitting module 40e, respectively. When the light amounts of the first light L1 to the fifth light L5 output from each of the fifth light emitting modules 40e are substantially constant, LM1> LM2> LM3> LM4> LM5 and LS1 <LS2 <LS3 < The relationship LS4 <LS5 can be established.

  In other words, the bottom side that is the upstream side in the light emission direction suppresses the generation of sublight (first sublight LS1 to LS5) that becomes leakage light compared to the top side that is the downstream side. Since the configuration is adopted, it is possible to suppress luminance unevenness caused by the accumulation of light on the Top side rather than the Bottom side.

  Here, in the example shown in FIG. 8, the light emitted from the first light emitting module 40 a to the fifth light emitting module 40 e and reaching the inner side of the top side of the backlight frame 31 is an absorber provided in this portion. 35 is absorbed. Therefore, it is possible to avoid a situation in which the amount of light at this portion increases and a bright line is generated in the region immediately above.

  In the present embodiment, the curvature of the shapes of the first lens 54a to the fifth lens 54e provided in each of the first light emitting module 40a to the fifth light emitting module 40e increases as the shape approaches the Top side from the Bottom side. However, it is not limited to this. That is, at least the fourth light-emitting module 40d and the fifth light-emitting module 40e adjacent on the Top side need only satisfy this relationship.

  In the present embodiment, in each of the first light emitting unit 50a to the fifth light emitting unit 50e constituting each of the first light emitting module 40a to the fifth light emitting module 40e, the lens 54 (the first lens 54a) is individually assigned to the four LEDs 52. Although the fifth lens 54e) is attached, the present invention is not limited to this. That is, a so-called cylindrical lens may be provided in each of the first light-emitting unit 50a to the fifth light-emitting unit 50e, and the four LEDs 52 may be covered with one cylindrical lens.

  Furthermore, in the present embodiment, RGB light emitted from the red LED 52R, the first green LED 52Ga, the blue LED 52B, and the second green LED 52Gb is mixed to generate white light, but the present invention is not limited to this. . For example, an LED 52 that emits blue light is used, and a phosphor that converts blue light emitted from the LED 52 into green light and red light is contained in the lens 54 to generate white light. May be. Further, for example, an LED 52 that emits ultraviolet light is used, and a phosphor that converts ultraviolet light emitted from the LED 52 into blue light, green light, and red light is contained in the lens 54, thereby allowing white light to be emitted. You may comprise so that it may produce | generate.

DESCRIPTION OF SYMBOLS 10 ... Back light apparatus, 11 ... Light source device, 12 ... Diffusing plate, 13, 14 ... Prism sheet, 15 ... Brightness enhancement film, 20 ... Liquid crystal display module, 21 ... Liquid crystal panel, 22, 23 ... Polarizing plate, 31 ... Back Light frame, 32 ... light emitting device, 33 ... power feeding cable, 35 ... absorber, 40 ... light emitting module, 40a ... first light emitting module, 40b ... second light emitting module, 40c ... third light emitting module, 40d ... fourth light emitting module 40e ... fifth light emitting module, 41 ... light emitting part, 42 ... wiring board, 43 ... connector, 44 ... reflector, 45 ... adjusting member, 46 ... absorbing part, 50 ... light emitting unit, 51 ... plate-like substrate, 52 ... LED, 53 ... resist film, 54 ... lens

Claims (8)

A display device that includes a display panel that performs image display and a backlight device that is provided on the back surface of the display panel and emits light toward the display panel.
The backlight device includes:
A frame that extends from one end side toward the other end side and is deployed;
A plurality of light emitting elements arranged in the frame and arranged in a direction orthogonal to a direction from the one end side to the other end side, and a plurality of light emitting elements in which the directions of light output from the plurality of light emitting elements are continuous Or the 1st light emission part which radiate | emits the light which goes to the said other end side from the said one end side using the 1st lens member adjusted for every light emitting element, and the light radiate | emitted from the said 1st light emission part is said A first light emitting module having a first reflecting member that reflects toward the display panel;
A plurality of light emitting elements arranged in the frame so as to be adjacent to the other end side of the first light emitting module, and arranged in a direction orthogonal to the direction from the one end side toward the other end side, and the plurality of the light emitting elements A second light emitting unit that emits light from the one end side toward the other end side by using a plurality of continuous light emitting elements or a second lens member that adjusts the direction of light output from the light emitting element for each light emitting element. And a second light emitting module having a second reflecting member that reflects the light emitted from the second light emitting unit toward the display panel side,
The display device, wherein the directivity of the first lens member is set higher than the directivity of the second lens member.   The backlight device further includes a diffusing member that diffuses light that is emitted from the first light emitting module and the second light emitting module and that is incident on the display panel without passing through a light guide plate. The display device according to claim 1, characterized in that:   The absorber further provided in the edge part by the side of the said other end part of the said flame | frame, and absorbing the light which injects from the said 1st light emitting module and the said 2nd light emitting module. The display device described. A display device that includes a display panel that performs image display and a backlight device that is provided on the back surface of the display panel and emits light toward the display panel.
The backlight device includes:
A frame that extends from one end side toward the other end side and is deployed;
A plurality of light emitting elements arranged in the frame and arranged in a direction orthogonal to a direction from the one end side to the other end side, and a plurality of light emitting elements in which the directions of light output from the plurality of light emitting elements are continuous Or the 1st light emission part which radiate | emits the light which goes to the said other end side from the said one end side using the 1st lens member adjusted for every light emitting element, and the light radiate | emitted from the said 1st light emission part is said A first light emitting module having a first reflecting member that reflects toward the display panel;
A plurality of light emitting elements arranged in the frame so as to be adjacent to the other end side of the first light emitting module, and arranged in a direction orthogonal to the direction from the one end side toward the other end side, and the plurality of the light emitting elements A second light emitting unit that emits light from the one end side toward the other end side by using a plurality of continuous light emitting elements or a second lens member that adjusts the direction of light output from the light emitting element for each light emitting element. And a second light emitting module including a second reflecting member that reflects the light emitted from the second light emitting unit toward the display panel,
The display device, wherein a curvature of the first lens member is set smaller than a curvature of the second lens member.   5. The display device according to claim 4, wherein the plurality of light emitting elements constituting the first light emitting unit and the plurality of light emitting elements constituting the second light emitting unit are light emitting diodes. A frame that extends from one end side to the other end side and is deployed;
A plurality of light emitting elements arranged in the frame and arranged in a direction orthogonal to a direction from the one end side to the other end side, and a plurality of light emitting elements in which the directions of light output from the plurality of light emitting elements are continuous Or the 1st light emitting part which radiate | emits the light which goes to the said other end side from the said one end side using the 1st lens member adjusted for every light emitting element, and the light radiate | emitted from the said 1st light emission part concerned A first light emitting module having a first reflecting member that reflects toward the opposite side of the frame;
A plurality of light emitting elements arranged in the frame so as to be adjacent to the other end side of the first light emitting module, and arranged in a direction orthogonal to the direction from the one end side toward the other end side, and the plurality of the light emitting elements Second light emission that emits light from the one end side toward the other end side using a plurality of continuous light emitting elements or a second lens member that adjusts the direction of light output from the light emitting element for each light emitting element. And a second light emitting module having a second reflecting member that reflects the light emitted from the second light emitting unit toward the side opposite to the frame,
The light source device, wherein the directivity of the first lens member is set higher than the directivity of the second lens member.   The light source device according to claim 6, wherein a curvature of the second lens member is set larger than a curvature of the first lens member.   The diffusion member which diffuses the light radiate | emitted from the said 1st light emitting module and the said 2nd light emitting module, and enters without passing through a light-guide plate, and is radiate | emitted outside is further provided. Light source device.

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