Abstract: An explosion proof lamp easy to be repaired and maintained comprises a lamp body, a metal guard covering the lamp body, a heat sinking lamp holder and a power supply box. The lamp body is installed on the lower end face of heat sinking lamp holder. The power supply box is mounted on the upper end face of heat sinking lamp holder. The power supply box comprises a box body and a cover body covering the box body. The box body is fixed to the upper end face of heat sinking lamp holder. The box body is connected to the cover body by screwed, and a slewing mechanism is provided on the side of joint of the box body and cover body. The slewing mechanism enables the box body and cover body to turn oppositely.

Abstract: An explosion-proof lamp cable gland is disposed in a channel of a coupling portion of an explosion-proof lamp for a cable to pass through, and includes a first explosion-proof member disposed at one end of the channel remote from an opening of the coupling portion and a compact member disposed at another end of the channel close to the opening of the coupling portion to connect to the first explosion-proof member. The explosion-proof lamp cable gland of the invention thus formed is simpler in structure and smaller in size, and can achieve explosion-proof effect as a conventional connector that is bulkier in size. Thus not only the cost is lower, but serial connection among the explosion-proof lamps also can be accomplished easily to make application versatile.

Abstract: A portable device for hands free illumination includes a battery pack and a lamp assembly coupled to the battery pack to receive power. The lamp assembly includes a housing defining an opening extending along at least a portion of two sides and defining an enclosure, a light source within the enclosure and coupled to the battery pack to receive power, and a transparent cover sized to fit over the opening to seal the enclosure and to permit light to pass through in at least two directions.

Abstract: A cap lamp system features a battery pack, a cap lamp housing containing a cap lamp bulb and a power cord connected between the battery pack and the cap lamp housing. The power cord provides power to the cap lamp bulb from the battery pack. An electronic module includes a housing defining a chamber and electronic circuitry is positioned within the chamber of the housing. The electronic module is positioned in circuit with the power cord. The electronic module may receives power from the battery pack and the electronic circuitry of the electronic module may includes a battery that powers the module.

Abstract: A clip light includes a light head, a power source, and a mounting arrangement. The light head includes a light housing having a light window, and a light source supported in the light housing to align with the light window. The power source is supported in the light housing to electrically link to the light source for providing electricity to generate light beam from the light source. The mounting arrangement adapted for detachably mounting the light head at a desired object, wherein the mounting arrangement is movably coupling with the light housing to selectively adjust a light projecting orientation of the light source through the light window with respect to the desired object.

Abstract: A combination headlamp and flashlight assembly includes a headlamp base; a headlamp head including a light source; a battery case, and a battery. The combination headlamp and flashlight assembly is changeable between a headlamp configuration and a handheld flashlight configuration. In the headlamp configuration, the headlamp head is mechanically and electrically coupled to the headlamp base to form a headlamp, the battery case carries the battery, and the battery case is electrically coupled to the headlamp base for powering the light source with the battery to provide illumination. In the handheld flashlight configuration, the headlamp head is mechanically and electrically coupled to the battery to form a handheld flashlight where the battery forms a handle and body of the handheld flashlight and powers the light source to provide illumination.

Abstract: A first sorting unit includes a second sorting unit that sorts first frequency data for luminance based on a first table, a third sorting unit that sorts second frequency data for chrominance based on a second table, a fourth sorting unit that sorts third frequency data for chrominance based on a third table, and an updating unit that updates the second and third tables based on nonzero information on the first and second frequency data before the third and fourth sorting units start sorting.

Abstract: A helmet having a warning device includes at least one illuminator externally mounted on a helmet body. A solar power supplying device has a solar panel fixedly mounted on a top surface of the helmet body for absorbing solar energy, which can be converted into electrical energy by means of a control circuit board and saved to an accumulator. The accumulator supplies the illuminator with required electricity to generate illumination. The control circuit board can detect if there is any solar energy gathered by the solar panel so as to automatically control the illuminator to generate illumination or not. A switch, when the illuminator automatically generates illumination, can be activated again to forcibly control the illuminator to continually generate illumination or not.

Abstract: A decorative apparatus comprises a primary container defined by an upper portion and a lower portion. The primary container has an opening defined in the upper portion. A secondary container comprises a cap and a reservoir body extending therefrom. The secondary container is suspendedly disposed within the primary container such that the cap of the secondary container substantially corresponds to the opening of the primary container and the reservoir body of the secondary container extends toward the lower portion of the primary container. A reservoir access aperture is disposed in the cap. A method of manufacture is also provided.

Abstract: An intrinsically safe battery pack arrangement for electrically powering electrical devices is disclosed. The power pack has a device for electronically determining a short in a cable or device and switching off the voltage to the power pack. The electronic device includes a transisterized circuit for sensing and controlling current through the cable. When the current exceeds a predetermined maximum, the circuit limits the current in the cable to a maximum value. The circuit is latched in the off position when the short is present for an extended time and the circuit may be reset after the short is removed and the problem corrected. This form of circuitry in power packs for use with mining equipment such as lamps, provides a unit which will not cause hazardous sparks when shorted thereby constituting an intrinsically safe device for use in mines.

Abstract: Safety lamp apparatus, suitable for use as a miner's cap lamp, includes a housing body closed at one side by a plastic light transmitting member. A bulb member is yieldably received in the housing body and is operable, when energized, to provide a filament in a state of incandescence for emitting visible radiation. During use of the apparatus in an explosive atmosphere conditions may arise where deformation of the light transmitting member from external impact forces directed thereagainst may drive deformed portions of the light transmitting member against the bulb member with sufficient force to cause bulb breakage and resulting explosion of the atmosphere.In the present invention protective means is provided comprising an arrangement of parts defining an oblique angular relationship between the central longitudinal axis of the bulb member and the impacting surface of the deformed portion of the light transmitting member.

Abstract: Wall mounted luminaire of hazardous duty type has mounting arm designed to protect luminaire parts from excessive pressure of explosive gases. The mounting arm is formed with an elongated wire passage of relatively small diameter wherein the gases are cooled and reduced in pressure before entering the luminaire housing.

Abstract: Apparatus for controlling reflected radiant energy to progressively vary distribution of the reflected radiant energy between spot and flood configurations comprises a housing body having a reflector surface, a lamp mounted in the housing body at the focal point of the reflector surface, and a dual light transmitting unit supported at an outer side of the housing body. The dual light transmitting unit includes a light transmitting disk component of circular shape fixed in abutting relation to the housing body, and a light transmitting disk cover component mounted for rotative movement about the central axis of the housing body and against the light transmitting disk.The light transmitting disk component is of generally circular shape and has an inner portion removed to form a substantially semi-circular opening.

Abstract: An angle iron forms two sides of a right isosceles triangular housing. These sides are each apertured and the apertures are provided with metal-framed lens plates which bolt onto the housing sides. Preferably, in one instance the lens material is mounted in the plate for ease of access to the interior of the housing and in the door instance the lens is mounted in the aperture and retained by the frame plate. A fluorescent lamp tube assembly is received inside the housing for providing illumination through both lenses. Access thereto is via removal of a metal-framed lens plate. The housing has mounting elements which permit a user to flush mount the housed light source, e.g. on a mining machine.

Abstract: The fixture includes a mount assembly preferably including a cage. A lamp/bar assembly slides longitudinally into the mount assembly cage. The power cable of the lamp/bar assembly extends through a packing end cap. A transparent/translucent shatterproof plastic lamp tube protector sleeve is threadably secured to the packing end cap and encloses the lamp/bar assembly. When the packing end cap engages the cage and the protector sleeve is inside the cage, an inspection end cap is threadably secured on the opposite end of the protector sleeve. Thus, the protected lamp/bar assembly. The lamp may be replaced by removing the inspection end cap. Should there be an explosion within the fixture, heat will be dissipated as the expanding gases pass out of the fixture through the threading between the protector sleeve and end caps. The lamp/bar assembly is secured at a selected angle about the longitudinal axis of the mount assembly, between the two end caps.

Abstract: A luminaire housing body is formed with a reflector chamber closed at one side by a radiation transmitting member. At an opposite side, the housing is extended to form a socket enclosure. A lamp socket member is rotatably mounted in the socket enclosure and is structured to define spaced apart inwardly dished reflector surfaces, hereinafter referred to as concaved reflective surfaces, in each of which a lamp may be placed at a focal point and independently energized by electrical means. A reflector member is located in back of the radiation transmitting member and is formed with a socket aperture.At either side of the concaved reflector surfaces, the socket member is shaped to present tapered outer ends which can be moved into and out of the socket aperture. The arrangement of the parts is such that a de-energized lamp is constantly shielded by the tapered ends to prevent shadow or distortion when another lamp is in use.

Abstract: A portable electric lamp including a body 1 mounting a lens 2, a lens holder 3, a reflector 5, and a bulb holder 6 is provided with a translucent diffuser sleeve 7 which has slots 8 which extend lengthwise thereof. The diffuser sleeve is coaxial with and surrounds the bulb holder and is associated with drive means 10-13 operable to effect axial movement of the diffuser sleeve relative to the bulb holder between a retracted position at which a bulb held in the bulb holder is arranged to direct a spot beam through the lens and a forward position at which light from the bulb is diffused by passage through the diffuser sleeve.

Abstract: A lamp for use in subterranean galleries such as mines in which the cold-cathode discharge tube is received in a housing which, in turn, is removably mounted in a receptacle and is held in place by a ring clamping a flange of the housing against a flange of the receptacle. The housing may be provided with a translucent cover so that the housing can be removed and replaced as a unit. A reed switch on the receptacle cooperates with a magnet on the housing to deenergize the terminals of the housing upon its removal. The terminals of the discharge tube are embedded in an insulating potting mass within the housing.

Abstract: The light has an explosion-proof housing that is of generally triangular transverse section, with no glass on the narrow front or top wall. In mine use, should rock drop onto the housing it is likely to strike glass parts only a glancing blow. The glass parts are arranged to be resiliently sealed to the cast or fabricated metal body of the housing, but be removable from the outside, so a broken glass part need not cost a whole light fixture. A spring resiliently supports the outer end of the bulb upon the housing to cushion against mechanical jolts.

Abstract: A portable electric lamp comprising a tubular transparent housing, a fluorescent lamp in the housing, an arrangement of sockets and starter connected in a circuit for supplying electric current to the lamp, and a removable elongated reflector element in the housing to which the lamp and current supplying arrangement are fixed for removal as a unit from the housing. The housing is closed at one end by a cap element and has a hand grip element adjacent the other end which has an end closure, and the cap and hand grip are of aluminum alloy or like material having relatively high thermal conductivity. The cap and hand grip are held in place by a plurality of tension rods spaced circumferentially and outwardly around the housing. Impact-absorbing protector rings are provided on the end cap and hand grip and also on the tension rod assembly. The lamp ballast is connected in the electric power supply line in spaced relation to the lamp housing.

Abstract: A globe-mounting apparatus for explosion-proof lighting devices which provides an easier globe-mounting and dismounting operation, and which is furnished with a hinge which joins the lighting body and the globe members. Around the periphery of the opening of the lighting body is formed a circular body facing inside, to which is alternately provided a cut and a projection with a fastening bolt screwed to it. Clamps, which are shorter than the cuts furnished at the opening of the lighting body, are provided around the periphery of the globe holder which holds the globe.