Abstract: An illuminating system includes illumination device adapted for being installed inside a car cabin, and an operation device being able to wirelessly operate illumination modes of the illumination device.

Abstract: An LED power supply device has a loop circuit formed by a switching circuit, an LED and a comparison circuit, and a reference voltage generation circuit for providing reference voltage to the comparison circuit. The loop circuit oscillates so that substantially constant current is applied to the LED.

Abstract: A plurality of metallic members are laminated via corresponding insulating members to form a metallic layered structure. Then, an energy beam is irradiated onto the metallic layered structure to generate an electric energy through the interactions between the metallic members of the metallic layered structure and the energy beam. The electric energy is extracted from the metallic layered structure. The metallic members are made of at least two kinds of metallic materials with respective different atomic numbers.

Abstract: A plurality of metallic members are laminated via corresponding insulating members to form a metallic layered structure. Then, an energy beam is irradiated onto the metallic layered structure to generate an electric energy through the interactions between the metallic members of the metallic layered structure and the energy beam. The electric energy is extracted from the metallic layered structure. The metallic members are made of at least two kinds of metallic materials with respective different atomic numbers.

Abstract: An LED power supply device has a loop circuit formed by a switching circuit, an LED and a comparison circuit, and a reference voltage generation circuit for providing reference voltage to the comparison circuit. The loop circuit oscillates so that substantially constant current is applied to the LED.

Abstract: A plurality of metallic plates are arranged alternately so that the main surface of one of the metallic plates is faced to the main surface of the adjacent one of the metallic plates. The metallic plates are classified into two kinds of plates with different thicknesses. Then, energy beams are irradiated perpendicularly onto the main surfaces of the metallic plates to generate an electric energy by interactions between the energy beams and the metallic plates.

Abstract: A circuit for an illuminator includes LEDs (DL1, . . . , DL6) which are connected to resistors (R1, . . . , R6) respectively in series to provide six series units and twos of these series units therein are connected in parallel and moreover threes of these parallel units are connected in series in a lattice arrangement. Even when DL2 undergoes disconnection, for example, an increased amount of current flowing in DL1 can thus be restrained as much as possible and even when LEDs with variable forward voltage are connected in parallel, a difference in the flowing amount of current between the LEDs is minimized and a difference in brightness is substantially nullified. Moreover, as resistors are added to the respective units, the number of LEDs can freely be changed by directly connecting units with the omission of the LED.

Abstract: An illuminating system includes illumination device adapted for being installed inside a car cabin, and an operation device being able to wirelessly operate illumination modes of the illumination device.

Abstract: In an LED unit, all of eight LEDs are connected in series. The voltage of a power supply, that is, a battery of a vehicle, 12 V, is insufficient for the eight LEDs. To cope with this, a boosting circuit is provided within the control unit to boost the voltage to about 16 V which is then applied to the eight LEDs. The front end of the LED unit is connected to a constant-current circuit, and a voltage detection circuit is provided near and connected to this constant-current circuit for detecting the voltage applied to the constant-current circuit. The voltage detected by the voltage detection circuit is compared with a reference voltage drawn from the power supply, is amplified in an amplifier, and is input as a boosting control signal into the boosting circuit. The boosting control signal is output so as to regulate the boosted voltage in such a manner that the voltage detected in the voltage detection circuit is a lowest possible voltage.

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: A vehicle display device such as a speed meter including indicators, many segments illuminated in two or more colors by plural LEDs and an indicator control circuit. The indicators dispose the segments so as to display a variable such as a car speed in a bar graph or in the form of a number. The indicator control circuit displays the variable by controlling the lighting of the LEDs and changes an emitted light color of indication based on a fixed color changing reference value in accordance with a value of the variable. The control circuit controls a duty ratio of a supply current or a current value in a predetermined set value range determined on the basis of the color changing reference value. Namely, brightness of the emitted light color before a color change is gradually decreased, while brightness of the emitted light color after the color change is gradually increased.

Abstract: An apparatus for arranging a plurality of different electric parts in a predetermined order for insertion into the substrate of a printed circuit board is disclosed. The apparatus has a plurality of cutter mechanisms arranged to receive respective tapes carrying respective electric parts. The cutter mechanism cuts the tape successively upon receipt of a control signal to sever the electrical parts one by one successively. The apparatus also has a plurality of carrier mechanisms arrayed on the periphery of a turn table which is arranged to be driven intermittently. When a carrier mechanism is positioned in front of the cutter mechanism having the desired electric part, the cutter mechanism is activated to sever the electric part and transfer the same to the carrier mechanism. Thus, the carrier mechanisms on the periphery of the turn table are loaded with respective electric parts.

Abstract: A single automatic part insertion machine which can insert the leads of various electronic components such as resistors, IC chips, IF transformers, variable resistors, connectors and so on, into specified insertion or mounting holes of printed circuit boards. The boards are supported on a common set of conveyor rails in one row, and are displaced in X and Y coordinate directions while they are transferred from a feeding position to an unloading position. Specified lead insertion holes of specified printed circuit boards are thus aligned one at a time with selected units of a number of parts feeding means in a predetermined sequence, so that the leads of corresponding electronic components may be inserted into specified insertion holes of the printed circuit boards and clinched if required. An automatic unfinished printed circuit board loading device is provided, as well as an automatic finished printed circuit board stacking device.