Abstract: An object is to prevent or reduce uneven brightness in a direct-type lighting device. A lighting device according to the present technology includes LEDs 28 arranged in a matrix on a bottom plate of the chassis and a reflector 26 including first and second side walls 26a, 26b each arranged between the LEDs 28 adjacent in a Y-axis direction and an X-axis direction, respectively. The LEDs 28 are configured to emit light toward an opening of the chassis. The first side wall 26a has a side surface 26a rising from a front surface 30a of an LED board 30 toward the opening of the chassis while being inclined. The first side wall 26a extends straightly along the X-axis direction and has a triangular cross-sectional shape taken along the Y-axis direction. The second side wall 26b has a prism-like shape rising from the front surface 30a toward the opening and has a rhombic outline in a plan view.

Abstract: A backlight device includes a light guide plate, a first light source, a second light source, and a positioning portion. The light guide plate has at least one end surface as a light entrance surface and one plate surface as a light exit surface. The first light source is opposed to a first light entrance surface that is a first end surface of the light guide plate. The second light source is opposed to a second light entrance surface that is an end surface opposite from the first light entrance surface of the light guide plate. The second light source is arranged to have a distance from the second light entrance surface relatively greater than a distance between the first light source and the first light entrance surface. The positioning portion is configured to position the light guide plate in a direction in which the first light source, the light guide plate, and the second light source are arranged, and to position the light guide plate with respect to the first light source and the second light source.

Abstract: An illumination device (1) includes: a plurality of LEDs (5) that are the light sources, the LEDs being arranged in a row in a circular shape; and a diffusion lens (6) disposed on the light-emitting side of the LEDs (5) in order to diffuse light emitted by the LEDs (5), the diffusion lens (6) being disposed so as to follow an arrangement direction of the LEDs (5) to cover these LEDs. The degree of light diffusion of the diffusion lens (6) towards the direction forming a right angle with the arrangement direction of the plurality of LEDs (5) is larger than the degree of light diffusion towards the arrangement direction of the plurality of LEDs (5).

Abstract: Provided is an illumination apparatus which prevents variations in the distance between the light-receiving surface of a light guide plate and a light source. Also provided is a display device which incorporates the illumination apparatus. The light guide plate, which constitutes a backlight unit, receives light through a light-receiving surface with the light-receiving surface oriented toward the light being emitted. In the backlight unit, pillars extend to intersect the direction of emission from an LED and are thus brought into contact with a device-carrying board and the light guide plate, which are superposed one on the other, thereby securing the device-carrying board and the light guide plate.

Abstract: Disclosed is a control method for restoring temporary malfunction of an injector 8 for adding urea water 12 into exhaust gas due to adhesion of urea crystals. A passage is laid out such that the passage (suction line 14) for feed of the urea water 12 runs downward from above of and is connected to the injector 8. When the injector 8 is determined to be in malfunction, an operation of temporarily sucking back the urea water 12 in the passage (suction line 14) is interposed before the pump 13 is stopped; the pump 13 is restarted after lapse of a predetermined time to re-determine whether the injector 8 is in malfunction or not.

Abstract: A backlight unit includes a chassis, LED light sources, and a reflection member. The LED light sources are arranged in a matrix on a bottom plate of the chassis. The reflection member includes side wall portions and through holes through which the LED light sources are passed. The side wall portions surround each of the LED light sources passing through the respective through holes. The side wall portions have inclined surfaces on side surfaces thereof that lead light from the LED light sources toward the opening side of the chassis. Each of the side wall portions located between the LED light sources that are adjacently positioned in a diagonal direction has a height greater than a height of each of the side wall portions located between the LED light sources that are adjacently positioned in a vertical direction or in a horizontal direction.

Abstract: A backlight device (24) of the present invention includes: a chassis (22) having at least a bottom plate (22a) that is rectangular in a plan view; a light guide plate (20) that has light-receiving faces (20a), which are side faces, and a rear surface that faces the surface side of the bottom plate (22a); LED light sources (28) that are arranged on the surface side of the bottom plate (22a) and that face the respective light-receiving faces (20a); protruding parts that have a protruding shape and spacer parts positioned on the surface side of the bottom plate (22a), facing the light guide plate (20) side; and a reflective sheet (26) that is arranged between the light guide plate (20) and bottom plate (22a).

Abstract: In order to prevent the occurrence of unevenness of planar light and reduce consumption energy, a backlight unit (1) includes: a light source unit (3); a light guide plate (2) in which light from the light source (3) enters through a light receiving surface (22) and in which planar light is emitted through a light emitting surface (21); an optical sheet (4) that is arranged on the side of the light receiving surface (22) of the light guide plate (2); a first optical member (61) that is formed on a portion of the optical sheet (4) close to the light source (3) and that reflects the light; and a second optical member (62) that is formed on a portion of the optical sheet (4) close to the first optical member (6).

Abstract: The edge light type backlight device (12) includes a light guide plate (19); an LED light source (17); a reflective sheet (25), the edge thereof on the side facing the LED light source (17) extending toward the LED light source (17) beyond the surface of the light-guiding plate (19) that faces the LED light source (17); and a chassis (14) that has a bottom plate (14a) and side plates (14b) rise from one surface of the bottom plate (14a) and that stores therein the LED light source (17), the reflective sheet (25), and the light guide plate (19). The LED light source (17) is affixed to the side plate (14b) of the chassis (14). In the reflective sheet (25), near an edge of the reflective sheet (25) on a side facing the LED light source (17), a fold line (25a) for bending is disposed across two edges connected to that edge.

Abstract: An object is to prevent or reduce uneven brightness in a direct-type lighting device. A lighting device according to the present technology includes LEDs 28 arranged in a matrix on a bottom plate of the chassis and a reflector 26 including first and second side walls 26a, 26b each arranged between the LEDs 28 adjacent in a Y-axis direction and an X-axis direction, respectively. The LEDs 28 are configured to emit light toward an opening of the chassis. The first side wall 26a has a side surface 26a rising from a front surface 30a of an LED board 30 toward the opening of the chassis while being inclined. The first side wall 26a extends straightly along the X-axis direction and has a triangular cross-sectional shape taken along the Y-axis direction. The second side wall 26b has a prism-like shape rising from the front surface 30a toward the opening and has a rhombic outline in a plan view.

Abstract: A lighting device includes an LED 16 and a light guide plate 18 that are fixed to a surface 51 of an LED board 17. The light guide plate 18 includes a light entrance surface 34 that is provided in an LED holding space 33 holding the LED 16 therein, a scattering surface 37 that is formed by performing perforation processing, and a light exit surface 36 through which light exits to outside of the light guide plate 18 after traveling through the light guide plate 18 and reflecting off the scattering surface 37. The LED holding space 33 is formed such that the light guide plate 18 has an opening for the LED holding space 33 and an opening size of the opening increases in a direction P1 in which a lower mold 47B integrally including a projection 47C for forming the LED holding space 33 is removed.

Abstract: A backlight unit 12 includes an LED 16 and a light guide plate 18. The LED 16 has light emitting surfaces 16d, 16e. The light guide plate 18 has light entrance surfaces 18b, 18c and a light exit surface 18d. The light entrance surfaces 18b, 18c are provided to face the light emitting surfaces 16d, 16e respectively and rays of light emitted from the light emitting surfaces 16d, 16e enter the light entrance surfaces 18b, 18c. The rays of light entering the light entrance surfaces 18b, 18c exit from the light exit surface 18d. The light emitting surfaces 16d, 16e include a first light emitting surface 16d substantially parallel to the light exit surface 18d and second light emitting surfaces 16e. A plane on the first light emitting surface 16d crosses a plane on each second light emitting surface 16e.

Abstract: An LED module (MJ) wherein among apertures (21A to 21C) and pins (11A to 11C) to engage each other, the apertures (21A to 21C) are formed in a mounting board (20) and the pins (11A to 11C) are formed on a lens (10). The apertures (21A to 21C) and the pins (11A to 11C) regulate the directivity direction of the lens (10) to a specific direction by engaging each other in one kind of manner.

Abstract: A backlight unit includes a chassis, a plurality of LED light sources, and a reflection member. The chassis includes a bottom plate and side plates, and has an opening on a front surface side. The LED light sources are arranged in a matrix on a front surface of the bottom plate of the chassis. The reflection member includes a plurality of through holes through which the respective LED light sources are passed and side wall portions having inclined surfaces on the sides thereof. The side wall portions provided in the end portion of the bottom plate of the chassis has a height greater than a height of the side wall portions provided in the middle portion of the bottom plate, and surround each of the LED light sources. The inclined surfaces lead light from the light sources toward the opening side of the chassis.

Abstract: A backlight unit includes a chassis, LED light sources, and a reflection member. The LED light sources are arranged in a matrix on a bottom plate of the chassis. The reflection member includes side wall portions and through holes through which the LED light sources are passed. The side wall portions surround each of the LED light sources passing through the respective through holes. The side wall portions have inclined surfaces on side surfaces thereof that lead light from the LED light sources toward the opening side of the chassis. Each of the side wall portions located between the LED light sources that are adjacently positioned in a diagonal direction has a height greater than a height of each of the side wall portions located between the LED light sources that are adjacently positioned in a vertical direction or in a horizontal direction.

Abstract: An object of the present invention is to suppress the brightness distribution in the lighting device. The backlight unit 12 according to the present invention includes an LED 17 as a light source with a light intensity distribution in which light having a peak light intensity travels in a direction inclined with respect to a front direction, a chassis 14 having an opening on a light exit side and housing the LED 17, and a light leading member 22 provided to extend from a mounting surface of the LED 17 toward the light exit side. The light leading member 22 is configured to lead light from the LED 17 toward the light exit side. The employment of the LED 17 with the above light intensity distribution enables an irradiation area A irradiated with the light having the peak light intensity to be larger. This reduces the uneven that may occur in the brightness distribution of the outgoing light.

Abstract: A backlight unit 12 includes LEDs 15, light guide plates 18, reflection sheets 24, LED boards 17 and reflection parts 47. Each light guide plate 18 has a light entrance surface 34 and a light exit surface 36. The light entrance surface 34 is arranged so as to face the corresponding LED 16 via a gap C. Light from the LED 16 enters the light entrance surface. The light exit surface 36 is arranged parallel to an arrangement direction in which the LED 16 and the light entrance surface 34 are arranged. The light exits from the light exit surface. Each reflection sheet 24 is arranged on an opposite surface of the corresponding light guide plate 18 from the light exit surface and configured to reflect light toward the light exit surface 36. Each LED board 17 is arranged so as to face the corresponding reflection sheet 24. The LEDs 16 and the light guide plates 18 are mounted to the respective LED boards 17.

Abstract: A backlight unit 12 includes LEDs 16, light guide plates 18, an air layer AR and a scattering structures. Each light guide plate 18 has a light entrance surface 34 and a light exit surface 36. The light entrance surface 34 faces the corresponding LED 16 and light from the LED 16 enters through the light entrance surface 34. The light exit surface 36 through which light exits is arranged along an arrangement direction in which the LED 16 and the light entrance surface 34 are arranged. The light guide plates 18 are arranged in a parallel layout so as to be parallel to the light exit surface 36 and perpendicular to the arrangement direction. The air layer AR is provided between the adjacent light guide plates 18 and has a refraction index lower than that of the light guide plates 18. The scattering structures are provided in side-edge surfaces 31a that are interfaces between the light guide plates 18 and the air layer AR. The scattering structures are configured to scatter light inside the light guide plates 18.

Abstract: The present invention relates to a lighting device including a plurality of light source units U including at least LEDs 16 and light guide plates 18. The light source units U are arranged in one direction such that gaps S are provided between the adjacent light guide plates 18. Each light guide plate 18 has a first light exit surface 36A. The light guide plate 18 receives light from the LED 16. Light L1 exits from the first light exit surface 36A. A diffuser 15b that receives the light L1 from the first light exit surface 36A is disposed so as to face the first light exit surface 36A. Reflection sheets 24 that reflect light are disposed on an opposite side from the diffuser 15b so as to cover the gaps S. Each light guide plate 18 has a second light exit surface 36B in an edge portion that faces the gap S on the opposite side from the diffuser 15b.

Abstract: Technology of preventing or reducing uneven brightness on a light exit surface of a lighting device is provided. A backlight unit 24 includes an LED light source 28 having directivity and a diffuser plate 20 configured to diffuse light from the LED light source 28. A plate surface 20a of the diffuser plate 20 is exposed to the LED light source 28. The LED light source 28 is arranged such that light therefrom enters the plate surface 20a of the diffuser plate 20 at an entrance angle s of an acute angle.