Abstract:
An LED lamp (A1) includes LED chips (21) and a heat dissipation member (3) that supports the LED chips (21), and the heat dissipation member (3) includes an LED mount (31) on which the LED chips (21) are mounted, and a slope portion (32) extending from the LED mount (31) opposite a main emission direction of the LED chips (21) and in a direction inclined with respect to the main emission direction. Such a configuration allows a wider range to be illuminated.
Abstract:
A cleaning system includes: a sulfuric acid electrolytic portion configured to electrolyze a sulfuric acid solution to generate an oxidizing substance in an anode chamber, a concentrated sulfuric acid supply portion configured to supply a concentrated sulfuric acid solution to the anode chamber, and a cleaning treatment portion configured to carry out cleaning treatment of an object to be cleaned using an oxidizing solution comprising the oxidizing substance. The sulfuric acid electrolytic portion has an anode, a cathode, a diaphragm which is provided between the anode and the cathode, the anode chamber which is demarcated between the anode and the diaphragm and a cathode chamber which is demarcated between the cathode and the diaphragm.
Abstract:
An LED illuminator includes a light emission circuit and a driver. The light emission circuit includes an LED group and a connection line connecting the LED group. The driver drives the LED group by using an AC voltage inputted from outside. The driver includes a constant-current control circuit. The constant-current control circuit keeps the current flowing to the light emission circuit at a predetermined value.
Abstract:
A drive device includes a primary-side rectifier circuit for rectifying a received alternating-current voltage, a first capacitor for smoothing the rectified voltage, a switching element coupled to a primary winding of a transformer, for converting the smoothed voltage into an alternating-current voltage by turning on and off to be supplied to the primary winding, a secondary-side rectifying-smoothing circuit for rectifying and smoothing an alternating-current voltage induced at a secondary winding of the transformer to be outputted to a load, a switching control circuit for turning on and off the switching element by supplying a drive voltage to a control electrode of the switching element, and a bias circuit for supplying a bias voltage to the control electrode of the switching element, based on a voltage induced at the primary winding.
Abstract:
A driving device includes a first switch element to switch between applying or not applying to a light-emitting element a voltage directed to setting the light-emitting element in an ON state, and a constant current control circuit to adjust a current flowing through the light-emitting element when the light-emitting element is in an ON state to a predetermined current value.
Abstract:
An etching liquid used for selectively etching silicon nitride, the etching liquid includes: water; a first liquid that can be mixed with the water to produce a mixture liquid having a boiling point of 150° C. or more; and a second liquid capable of producing protons (H+). Alternatively, an etching liquid includes: water; phosphoric acid; and sulfuric acid, the phosphoric acid and the sulfuric acid having a volume ratio of 300:32 to 150:300.
Abstract:
Each of a plurality of reels variably presents a plurality of symbols. A cover body is formed with a plurality of observation windows. The cover body covers the reels such that the reels are selectively viewed through one of the observation windows in accordance with a condition of a game.
Abstract:
A seal device for a gear pump, whose gear case (1), rotatably containing a pair of gears (2), (3) meshing with each other therein, is closed by side plates (4) at both sides thereof interposing seals (5) therebetween, wherein the seal (5) is formed of a plurality of annular parts (5.sub.1), (5.sub.2), projections 5a) formed on the annular parts (5.sub.1), (5.sub.2), a connecting part (5c) for connecting the annular parts (5.sub.1), (5.sub.2), and a notch (5d) formed on at least one side of said connecting part (5c). Thanks to a structure as above, even when a tensile force acts on the connecting part during the use of the device, cracks concentratedly develop at the notch (5d) and are prevented from developing at the other parts, whereby oil leakage can be prevented.
Abstract:
An LED lamp A1 includes a plurality of LED modules 1 and a substrate 2 on which the LED modules 1 are mounted in a row. A light guide 3 covering the LED modules 1 is provided on the substrate 2. The light guide 3 is held in close contact with each of the LED modules. With this arrangement, a proper amount of light is obtained with the use of a smaller number of LED modules 1 or with less power consumption.
Abstract:
An LED illuminator includes a light emission circuit and a driver. The light emission circuit includes an LED group and a connection line connecting the LED group. The driver drives the LED group by using an AC voltage inputted from outside. The driver includes a constant-current control circuit. The constant-current control circuit keeps the current flowing to the light emission circuit at a predetermined value.