Abstract: To provide a backlight unit for use in a liquid crystal display device and so on, which is capable of overcoming a problem of interference due to expansion and contraction of a light guide plate and an optical sheet and preventing a strange noise by clicking, a backlight unit includes a support plate, a light guide plate that is disposed in the front side of the support plate and emits light, which is introduced from a light source through the end side of the light guide plate, through the front side of the light guide plate, an optical sheet that is disposed in the front side of the light guide plate, and a liquid crystal panel maintenance member that is disposed in the front side of the optical sheet, wherein the light guide plate and the liquid crystal panel maintenance member hold and fix the optical sheet at one point.

Abstract: To provide a backlight unit for use in a liquid crystal display device and so on, which is capable of overcoming a problem of interference due to expansion and contraction of a light guide plate and an optical sheet and preventing a strange noise by clicking, a backlight unit includes a support plate, a light guide plate that is disposed in the front side of the support plate and emits light, which is introduced from a light source through the end side of the light guide plate, through the front side of the light guide plate, an optical sheet that is disposed in the front side of the light guide plate, and a liquid crystal panel maintenance member that is disposed in the front side of the optical sheet, wherein the light guide plate and the liquid crystal panel maintenance member hold and fix the optical sheet at one point.

Abstract: In an illumination device for license plate which illuminates the license plate from the front side thereof, at least one light source consist of a white LED is arranged at a position upward or obliquely upward of the license plate in such a manner that optical axes thereof traverse with a lower range than the center of the license plate, and a reflector is arranged at a position obliquely downward seen from an observer's side of the light source, receiving a light directing to the observer's side from a portion of a light emitted from the light source, and converting the light into a light irradiating the center or the lower part of the license plate. Further, a garnish for accommodating the light source and having a light transmitting part can be provided to the illumination device.

Abstract: A light-emitting device has two light-emitting element. In a substrate portion of the light-emitting device having a first internal positive electrode connected to the positive electrode side of a first light-emitting element, a first internal negative electrode connected to the negative electrode side of the first light-emitting element, a second internal positive electrode connected to the positive electrode side of a second light-emitting element, and a second internal negative electrode connected to the negative electrode side of the second light-emitting element, these electrodes are provided so that homopolar electrodes are disposed diagonally.

Abstract: An illumination device having a first light source, a second light source, whose luminous color differs from that of said first light source, and a controller for controlling the illuminating condition of each of the first light source and the second light source is configured. The controller turns on the first light source so that the light intensity of the first light source gradually increases at an early stage of a turning-on operation. Moreover, the controller turns on the second light source when the light intensity of the first light source gradually increases after a lapse of a predetermined time from the start of the turning-on of the first light source.

Abstract: In an illumination device for license plate which illuminates the license plate from the front side thereof, at least one light source consist of a white LED is arranged at a position upward or obliquely upward of the license plate in such a manner that optical axes thereof traverse with a lower range than the center of the license plate, and a reflector is arranged at a position obliquely downward seen from an observer's side of the light source, receiving a light directing to the observer's side from a portion of a light emitted from the light source, and converting the light into a light irradiating the center or the lower part of the license plate. Further, a garnish for accommodating the light source and having a light transmitting part can be provided to the illumination device.

Abstract: The illumination device comprises at least one light source, and a light pipe positioned at the front side of a license plate, and a light diffusing means. A light of the light sources is led, the light pipe emitting a leading light from the surface of the license plate face. The light emitted from the observed face is diffused by the light diffusing means. The light diffusing means is provided with, rugged portions of an observed face opposite to a light emitting face, or, a light diffusing layer composed of two or more kinds of light transmitting materials, refractive indexes of which are different each other, on the observing face, and a light led from a light leading face is reflected and diffused on the light diffusing layer.

Abstract: A light-emitting device has two light-emitting element. In a substrate portion of the light-emitting device having a first internal positive electrode connected to the positive electrode side of a first light-emitting element, a first internal negative electrode connected to the negative electrode side of the first light-emitting element, a second internal positive electrode connected to the positive electrode side of a second light-emitting element, and a second internal negative electrode connected to the negative electrode side of the second light-emitting element, these electrodes are provided so that homopolar electrodes are disposed diagonally.

Abstract: An illumination device having a first light source, a second light source, whose luminous color differs from that of said first light source, and a controller for controlling the illuminating condition of each of the first light source and the second light source is configured. The controller turns on the first light source so that the light intensity of the first light source gradually increases at an early stage of a turning-on operation. Moreover, the controller turns on the second light source when the light intensity of the first light source gradually increases after a lapse of a predetermined time from the start of the turning-on of the first light source.

Abstract: The illumination device comprises at least one light source, and a light pipe positioned at the front side of a license plate, and a light diffusing means. A light of the light sources is led, the light pipe emitting a leading light from the surface of the license plate face. The light emitted from the observed face is diffused by the light diffusing means. The light diffusing means is provided with, rugged portions of an observed face opposite to a light emitting face, or, a light diffusing layer composed of two or more kinds of light transmitting materials, refractive indexes of which are different each other, on the observing face, and a light led from a light leading face is reflected and diffused on the light diffusing layer.

Abstract: An illuminating plate for a car has a light guide plate; a cover provided with at least one light transmitting window, and disposed on the light guide plate; and light reflecting layer formed on the rear surface of the light guide plate. The light reflecting layer is formed to cover an area where the light is projected onto the rear surface of the light guide plate through the corresponding light transmitting window, and the light reflecting layer being slightly larger than the area.

Abstract: A direct lighting unit fits in opposition to an opening of a roof of a vehicle's cabin so as to illuminate a light directly the cabin. An indirect lighting unit is disposed around the outer circumference of the direct lighting unit. The indirect lighting unit contains a plurality of LEDs disposed at fixed intervals so as to emit light outward. The LEDs are controlled to indirectly illuminate the roof. When the direct lighting unit is mounted to the roof, a fixing piece supports a grooved edge portion of the indirect lighting unit so that the indirect lighting unit is immovably held between the fixing piece and the roof. Thus, the direct and indirect lighting units are simultaneously secured to the roof.

Abstract: An illuminating plate for a car has a light guide plate; a cover provided with at least one light transmitting window, and disposed on the light guide plate; and light reflecting layer formed on the rear surface of the light guide plate. The light reflecting layer is formed to cover an area where the light is projected onto the rear surface of the light guide plate through the corresponding light transmitting window, and the light reflecting layer being slightly larger than the area.

Abstract: An air bag apparatus to be mounted in a vehicle in order to protect an on-board passenger by unfolding and inflating a bag body when the bag body is activated. The air bag apparatus is equipped with an inflator, the bag body which is mounted in folded-up condition in such a way that the gas emitted from the inflator can flow into the bag body and equipped with gas vent holes, and a cover body for covering the bag body in the folded-up condition. Each gas vent hole is fitted with a gas-vent quantity regulating valve capable of decreasing the open quantity of the gas-vent hole during the time the bag body is inflating.

Abstract: In an air bag system according to the invention, there is employed a control device which can control the internal pressure of an air bag after expanded in such a manner that a buffer distance, for which the air bag after expanded can be compressed when it is contacted with an occupant, can be kept constant regardless of an increase or a decrease in the weight or the like of the occupant. In operation, the control device firstly takes out the acceleration data of the occupant corresponding to the degree of a collision in accordance with a signal from an acceleration sensor.