Abstract: Improved method and apparatus for hand-held portable illumination. A flashlight and corresponding method are described. The flashlight includes a housing, a plurality of LEDs, and an electrical circuit that selectively applies power from the DC voltage source to the LED units, wherein the flashlight is suitable for handheld portable operation by a user. In one embodiment, the first electrical circuit further includes a control circuit for maintaining a predetermined light output level of the LED units as a charge on a battery varies. In another embodiment, the control circuit maintains an average predetermined light output level of the LED units as the charge on the battery cell varies by changing a pulse width or frequency as the charge on the battery cell varies to maintain a given average light output.

Abstract: A synchronous multiple serial-lamps sets comprises a plurality of serial or serial and parallel lamp sets; an IC set, an IC set auxiliary part, a power supply connector; and a signal transmission line. The leads serve to connect the lamp sets, IC set, IC set auxiliary part, power supply connector so as to be formed as an integral structure. The power supply connector is connected to a power supply for supplying power to IC set and IC set auxiliary part. In operation, multiple functions is generated, and many lamp sets are operated so that the light emitters are illuminated or extinguished. Any one IC set transmits a signal to each IC set, so as to start or reset each lamp sets and thus they have the same preset electric functions, and thus a function of synchronous operation in a plurality of lamp sets is formed.

Abstract: A lighted mask for underwater divers utilizing a monochromatic blue-green LED light source secured to the mask directing light to the front of the face plate of the mask and having a push button control mounted on the mask for actuating the light source.

Abstract: Improved method and apparatus for hand-held portable illumination. A flashlight and corresponding method are described. The flashlight includes a housing, a plurality of LEDs, and an electrical circuit that selectively applies power from the DC voltage source to the LED units, wherein the flashlight is suitable for handheld portable operation by a user. In one embodiment, the first electrical circuit further includes a control circuit for maintaining a predetermined light output level of the LED units as a charge on a battery varies. In another embodiment, the control circuit maintains an average predetermined light output level of the LED units as the charge on the battery cell varies by changing a pulse width or frequency as the charge on the battery cell varies to maintain a given average light output.

Abstract: A wand light has a base tube (1) with a light-tube end in which a base end of a light tube (9) is pivotal concentrically with pivotal-light-switch attachment of the light tube to the base tube. The base tube contains a stored-energy unit (2) in addition to being a handle and a daytime signaler. The light tube contains a light emitter which can include a flashlight bulb (35) or a plurality of light-emitting diode units (18) on a circuit board (14). The light tube is twisted in the base tube for selective switching of current for the light emitter. Moisture-proof pivotal attachment of the light tube to the base tube, moisture-proof construction of the light tube and moisture-proof construction of the base tube render the entire wand light moisture-proof. Predetermined ruggedness, diameter, length, diameter per length and length of the light tube per length of the base tube render it adaptable to a wide variety of uses. Accidental and unintentional switching are prevented with twist switching.

Abstract: A novel multi-function switching head for use with handheld illumination devices for switching electrical current to multiple illumination sources and for selecting from multiple battery power supplies.

Abstract: An alarm guard for use with an alarm signaling device that is installed to meet Underwriter laboratories (UL) 1971 requirements and that includes a chassis mountable to a surface and a visual signaling element mounted on an outer face of the chassis and extending therefrom to be activated to indicate a hazardous condition. The alarm guard includes a mesh chassis guard enclosing at least four sides of the chassis and a visual indicator guard including a plurality of guard elements mounted to the chassis guard adjacent the visual signaling element. The guard elements may be comprised of straight and curved segments and extend from the outer face of the chassis and are spaced apart along the vertical and horizontal faces of the visual signaling element to provide vertical and horizontal openings sufficient to provide a required emitted light pattern in each plane of light emission.

Abstract: A toilet light assembly for use at nighttime includes a toilet seat position sensor, a color-coded light comprised of two light sources each of a different color, a chime generator, a person sensor and a darkness sensor. When a person in darkness is sensed in the vicinity of the toilet, the assembly energizes the color-coded light in response to the toilet seat position sensor. If the seat is up, the toilet area is illuminated with red lighting and a brief chime is sounded. If the seat is down, the toilet area is quietly illuminated with green lighting. Thus the invention provides a colorful and unambiguous indicator of the position of the seat and provides a comfortable level of lighting to automatically facilitate nighttime use of the toilet.

Abstract: A solar power-operated, construction work warning lamp which is consisted of a base secured inside a lamp guard and covered by a top cover and a bottom cover to hold a solar cell assembly and a light emitting assembly, wherein a light intensifier is fastened to the base on the top and secured in place by a framed seat and an enclosing wall, to intensify the intensity of light given by the solar cell assembly. The light intensifier is consisted of two symmetrical condenser lens assemblies connected into a cylindrical shape covered around the light emitting assembly to hold a plurality of condenser lens for intensifying the intensity of light given by the light emitting elements on the light emitting assembly.

Abstract: A trouble light has a positionally adjustable hook and also may carry a rotatable cord reel. The trouble light has a shield that mounts to a base and extends alongside a light source. An elongated slot extends through the shield. A hook for hanging the trouble light has a shank that extends through and is slidable along the slot. A securing device will secure the shank to the shield at selected points and at selected angular orientations. A cord reel mounts to the shank and is rotatable relative to the shank.

Abstract: A combined fluorescent lamp and spotlight which is simple to manufacture and assemble has a trough-shaped body member of generally rectangular section with tubular cylindrical projections at its ends and a chassis member received on the trough-shaped body member and closing the open side thereof, the chassis member mounting a bulb holder for a bulb, fluorescent tube mounting members, a printed circuit board, a switch and battery contacts such that all the electrical components requiring connection together are all provided on the chassis member which can be completely wired before being engaged on the trough-shaped body member to close the open side thereof.

Abstract: A lamp capable of underwater use comprises a rectangular acrylic body with elongate V-shaped recesses in a major surface each receiving an elongate Beta-light. An acrylic cover plate is sealed to the major surface and the body is secured to a steel backing plate with a neoprene layer between to help dissipate shock loadings. The sides of the recesses include an angle of 78.degree. to enhance reflection and may be formed by a reflective lining. The Beta-lights can be received in the grooves by shock absorbent O-rings grouped in pairs with adhesive in between. In a modification a disc-shaped Beta-light is encapsulated and received in a body formed by pour molding which is closed by a cap which is ultrasonically welded into place.

Abstract: A flashlamp signal device which includes an illumination means for providing a prolonged, visible signal after actuation of each of the device's flashlamps. The illumination means may be in the form of a phosphor coating within the device or on an adjacent, movable panel, or the phosphor may be impregnated within the light-transmitting housing or support structure of the device.