Abstract: The backlight device 24 according to the present invention is provided with: an LED substrate 30; an LED light source 28; a light guide plate 20 having a light entrance surface 20a on a side surface; a chassis 22 having a bottom plate and a side plate; and spacer members that regulate the distance between the side plate and the light guide plate 20. The side plate has three first side plates 22c and 22d on the surface of which an LED substrate 30 is arranged, and one second side plate 22b on the surface of which the LED substrate 30 is not arranged. The spacer members have an elastic spacer member 34a and a non-elastic spacer member 34b. The space between the first side plate 22c that is opposite the second side plate 22b, across the light guide plate 20, and the light guide plate 20 is regulated by the non-elastic spacer member 34b. The space between the other side plates 22b and 22d and the light guide plate 20 is regulated by the elastic spacer member 34a.

Abstract: A backlight device 24 according to the present invention includes: LED substrates 30; LED light sources 28 placed on the surfaces of the LED substrates 30; a light guide plate 20 having light-receiving surfaces 20a on the side faces, the plate being placed such that the LED light sources 28 and the light-receiving surfaces 20a face each other; a chassis 22 having a bottom plate and a plurality of side walls 22b, 22c, 22d, and 22d standing upright from the bottom plate, the chassis being open on a top side opposite to the bottom plate and storing at least the LED light sources 28 and the light guide plate 20; and spacer members 34 for regulating the gaps between the side walls and the light guide plate 20, the spacer members being made of an elastic material. The LED substrates 30 are placed along the surfaces of the side walls, and the spacer members 34 are placed in the corners between the adjacent side walls 22b, 22c, 22d, and 22d.

Abstract: A backlight unit (lighting device) 12 includes a chassis 14, an LED (light source) 17, a light guide plate (light guide member) 19, a duct member 22, and dissipative LED attachment portion (dissipative light source attachment portion) 30. The chassis 14 includes a light exit portion 14c through which light exits. The LED 17 is arranged close to an end portion of the chassis 14. The light guide plate 19 is arranged closer to a middle area of the chassis 14 than the LED 17 and light from the LED 17 is guided toward the light exit portion 14c thereby. The duct member 22 is arranged on the side opposite to the light exit portion 14c side of the chassis 14 and has an air passage 23 therein. The dissipative LED attachment portion 30 is provided to the duct member 22 and includes one part (heat dissipation portion 30a) facing the air passage 23 and another part (LED attachment portion 30b) protruding to inside of the chassis 14 and to which the LED 17 is attached.

Abstract: A display device includes a display device main body including a display panel provided on a circumferential portion thereof with an electrode unit and a dummy electrode unit, a chassis housing the display device main body, a source driver FPC configured to be electrically connected to the electrode unit and supply an electric signal to the display panel, and a flexible fixing board connected to the dummy electrode unit and fixed to the chassis.

Abstract: A display device 10 includes: light sources 17; a light guide plate 16 having a light-receiving face 16c and a light-exiting surface 16a, and a display panel 11 having a display surface 11a where light that exits the light-exiting surface 16a is used for image display; a driving substrate 113 having a mounting surface 113a on which the light sources 17 are mounted; flexible wiring substrates 111 that electrically connect the display panel 11 to the driving substrate 113; a chassis 14 having an extending edge 141 that extends beyond the light-receiving face 16c and that is arranged to face a surface 16b opposite to the light-exiting surface 16a; and a light source positioning member 18 that is detachably mounted on the chassis 14 and that is adhered to the driving substrate 113 such that the light sources 17 face the light-receiving face 16c with a gap therebetween.

Abstract: Provided is an LED substrate capable of being downsized in width. In addition, provided are LED substrates that can be disposed laterally in an efficient fashion. Each LED substrate (20) has a configuration that two single terminal connectors of a light-source-side substrate connector (single terminal connector) 40 including a light-source-side terminal 41 and a ground-side substrate connector (single terminal connector) 50 including a ground-side terminal 51 are included and disposed at right and left ends of each LED substrate so as to sandwich therebetween a plurality of LEDs (21) connected in series.

Abstract: Provided is an LED substrate including a plurality of LEDs that is capable of being downsized in width. An LED substrate (20) includes a radiating plate (22) made from metal, an insulating layer (23), a plurality of LEDs (21) disposed linearly along a longitudinal direction of the radiating plate and connected to each other in series, and first and second ground patterns (33, 34) disposed at left and right ends of the LED substrate, wherein the first and second ground patterns are electrically connected to the radiating plate, which is disposed under the first and second ground patterns while sandwiching therebetween the insulating layer, via sheet-metal screws (71, 72).

Abstract: A backlight device 24 according to the present invention includes: LED substrates 30; LED light sources 28 placed on the surfaces of the LED substrates 30; a light guide plate 20 having light-receiving surfaces 20a on the side faces, the plate being placed such that the LED light sources 28 and the light-receiving surfaces 20a face each other; a chassis 22 having a bottom plate and a plurality of side walls 22b, 22c, 22d, and 22d standing upright from the bottom plate, the chassis being open on a top side opposite to the bottom plate and storing at least the LED light sources 28 and the light guide plate 20; and spacer members 34 for regulating the gaps between the side walls and the light guide plate 20, the spacer members being made of an elastic material. The LED substrates 30 are placed along the surfaces of the side walls, and the spacer members 34 are placed in the corners between the adjacent side walls 22b, 22c, 22d, and 22d.

Abstract: The backlight device 24 according to the present invention is provided with: an LED substrate 30; an LED light source 28; a light guide plate 20 having a light entrance surface 20a on a side surface; a chassis 22 having a bottom plate and a side plate; and spacer members that regulate the distance between the side plate and the light guide plate 20. The side plate has three first side plates 22c and 22d on the surface of which an LED substrate 30 is arranged, and one second side plate 22b on the surface of which the LED substrate 30 is not arranged. The spacer members have an elastic spacer member 34a and a non-elastic spacer member 34b. The space between the first side plate 22c that is opposite the second side plate 22b, across the light guide plate 20, and the light guide plate 20 is regulated by the non-elastic spacer member 34b. The space between the other side plates 22b and 22d and the light guide plate 20 is regulated by the elastic spacer member 34a.

Abstract: Provided is an LED substrate capable of being downsized in width. In addition, provided are LED substrates that can be disposed laterally in an efficient fashion. Each LED substrate (20) includes a radiating plate (22) made from metal, an insulating layer (23), a connector (40) disposed in the middle of the LED substrate, a plurality of LEDs (21) disposed to the right and left of the connector, first and second ground patterns (34, 35) disposed at left and right ends of each LED substrate, and a third ground pattern (36) disposed in the middle of the LED substrate, wherein the first, second and third ground patterns are electrically connected to the metallic radiating plate, which is disposed under the first, second and third ground patterns while sandwiching therebetween the insulating layer, via sheet-metal screws (71, 72 and 73).

Abstract: Provided is an LED substrate capable of being downsized in width. In addition, provided are LED substrates that can be disposed laterally in an efficient fashion. Each LED substrate (20) has a configuration that two single terminal connectors of a light-source-side substrate connector (single terminal connector) 40 including a light-source-side terminal 41 and a ground-side substrate connector (single terminal connector) 50 including a ground-side terminal 51 are included and disposed at right and left ends of each LED substrate so as to sandwich therebetween a plurality of LEDs (21) connected in series.

Abstract: Provided is an LED substrate including a plurality of LEDs that is capable of being downsized in width. An LED substrate (20) includes a radiating plate (22) made from metal, an insulating layer (23), a plurality of LEDs (21) disposed linearly along a longitudinal direction of the radiating plate and connected to each other in series, and first and second ground patterns (33, 34) disposed at left and right ends of the LED substrate, wherein the first and second ground patterns are electrically connected to the radiating plate, which is disposed under the first and second ground patterns while sandwiching therebetween the insulating layer, via sheet-metal screws (71, 72).

Abstract: One embodiment of the present invention discloses: a backlight lamp lighting control device including: a PWM signal generating section for generating a PWM signal in accordance with a duty ratio externally inputted, and outputting the PWM signal to a PWM inverter section controlled by the PWM signal so as to drive a fluorescent lamp to light; and a tube current detecting section for detecting a current flowing in the fluorescent lamp, the PWM signal generating section generating the PWM signal based on a current, which is obtained by adjusting the current detected by the tube current detecting section in accordance with the duty ratio externally inputted, so that luminance displayed on a liquid crystal display panel will be substantially uniform over the entire liquid crystal display panel.

Abstract: An object of the present invention is to provide a lighting device that can suppress uneven brightness. The lighting device of the present invention includes a LED 22 having a light emitting surface 22A, a light guide plate 50 having a light entrance surface 50D and a light exit surface 50A, and a reflection-type polarizing sheet 43 covering at least a part of the light exit surface 50A of the light guide plate 50. Light emitted from the light emitting surface 22A enters the light entrance surface 50D facing the light emitting surface 22A. The light in the light guide plate 50 exits through the light exit surface 50A. A light-source-side peripheral end 43A of the reflection-type polarizing sheet 43 is located farther from the LED 22 than a light-source-side peripheral end of the light guide plate 50, whereby a peripheral end portion of the light guide plate 50 has a sheet-non-overlapping area T1 that does not overlap with the reflection-type polarizing sheet 43.

Abstract: A lighting device configured to restrict uneven brightness is provided. A lighting device according to the present invention includes an LED 22 having a light emitting surface 22A, a light guide plate 50 arranged opposite to the light emitting surface 22A and having a light incident surface 50D into which light from the light emitting surface 22A makes incidence and a light exit surface 50A from which the light output, and an optical member 40 arranged to cover the light exit surface 50A. The optical member 40 has a light blocking portion 60 at an edge portion thereof on a side of the LED 22, which blocks light incident into the optical member 40 from side surfaces 41A to 43A of the optical member 40 on the side of the LED 22.

Abstract: One embodiment of the present invention discloses: a backlight lamp lighting control device including: a PWM signal generating section for generating a PWM signal in accordance with a duty ratio externally inputted, and outputting the PWM signal to a PWM inverter section controlled by the PWM signal so as to drive a fluorescent lamp to light; and a tube current detecting section for detecting a current flowing in the fluorescent lamp, the PWM signal generating section generating the PWM signal based on a current, which is obtained by adjusting the current detected by the tube current detecting section in accordance with the duty ratio externally inputted, so that luminance displayed on a liquid crystal display panel will be substantially uniform over the entire liquid crystal display panel. With the arrangement, a difference between luminance on a high voltage side and luminance on a low voltage side in a lamp of a backlight can be reduced.

Abstract: When an output voltage detected by an output voltage detecting circuit is higher than the output voltage under normal operating condition, and lower than a predetermined value which was set to be not more than a value at which a current begins to flow from a collector to a base of a transistor, a dropper-type stabilized power circuit outputs a controlling signal which conducts a compensating resistance switch by a switch driving circuit. This makes a high-temperature-leak compensating resistance ready to function. While, when the voltage of an output terminal OUT rises to be not less than the predetermined value, a controlling signal which does not conduct the compensating resistance switch by the switch driving circuit is outputted so that the current does not flow to the high-temperature-leak compensating resistance.

Abstract: When an output voltage detected by an output voltage detecting circuit is higher than the output voltage under normal operating condition, and lower than a predetermined value which was set to be not more than a value at which a current begins to flow from a collector to a base of a transistor, a dropper-type stabilized power circuit outputs a controlling signal which conducts a compensating resistance switch by a switch driving circuit. This makes a high-temperature-leak compensating resistance ready to function. While, when the voltage of an output terminal OUT rises to be not less than the predetermined value, a controlling signal which does not conduct the compensating resistance switch by the switch driving circuit is outputted so that the current does not flow to the high-temperature-leak compensating resistance.

Abstract: An optoelectronic device for sensing an object without any contact, the optoelectronic device being adapted to be connected to a control device which is capable of sending an identification code to the optoelectronic device, the optoelectronic device includes an optoelectronic element (110, 111) for receiving an input signal and for converting the received signal into an electrical signal, an address memory (121) for storing a self identification code, a determining unit (126) connected to the address memory (121) for determining a coincidence between the self identification code stored in the address memory (121) and the identification code sent from the control device, and an activating unit (127) connected to the determining unit (126) for driving the optoelectronic element (110, 111) at a time when the self identification code coincides with the identification code.