A hand held search light includes a miniaturized electronic control circuit for igniting and operating an arc lamp in the light. A lamp mounting arrangement is disclosed for shock mounting the arc lamp, including an arrangement to center and focus the light beam emitted by the search light. The search light is modularized for ease of field maintenance by unskilled personnel.
A combination searchlight, which includes a searchlight, which has a lamp case covered with a rim and a lens and connected to a lamp case supporting arm thereof at the top of a handle thereof, a carrying strap fixed to the handle and lamp case supporting arm of the searchlight, and a mount fixed to the lamp case supporting arm to carry a compass and a reflecting bar, wherein the rim is fastened to the lamp case through a screw joint and has a plurality of pins perpendicularly extended from the front side thereof and spaced around the periphery for protecting the lens.
A xenon arc searchlight incorporates a high frequency/high efficiency electronic circuit that allows lamp ballasting and charging of the system battery to occur over a wide range of external DC power supplies. The xenon arc searchlight has a converter circuit coupled to both the battery, the ballasting circuit and the arc lamp for converting DC voltage from the battery to pulse width modulated switched current to the arc lamp in which the DC voltage is switched by parallel switching transistors. The ballisting circuit is controllable by a switch to vary current supplied to the converter circuit and hence intensity of the lamp which discrete steps in intensity of the lamp are not visually perceptibly different between one step to a next step in the sequence of steps of the current to the lamp. The lamp, ballast, battery and charger are provided in a single rugged package.
A housing for use with a ballast for powering one or more fluorescent lamps. In a preferred embodiment, the housing includes a cover (48) and a base (10). The cover (48) has at least two fingers (80), where each finger (80) includes a mating portion (86). The base (10) has at least two corresponding finger ports (100), each with a guide-lock structure (102) for guiding insertion of the mating portion (86) of the finger (80) into the finger port (100) and for securely locking the finger (80) in place when the mating portion (86) is inserted into the finger port (100).
A coupling unit for coupling a portable electronic device to a docking station includes a frame part mounted in the docking station and formed with an inclined rail member, and an engaging member that is slidable along the rail member between upper and lower ends of the rail member. The portable electronic device is formed with a slot with an enlarged end and an extension reduced from the enlarged end. The engaging member engages the extension when moved to the lower end of the rail member, and is vertically aligned with the enlarged end when moved to the upper end of the rail member.
A lamp assembly for a flashlight device is provided, which contains a lamp member, at least an optical lens, and a rim member. The lamp member has a lamp housed in a closed casing with a transparent lens at an end of the closed casing. Around and at the outer side of the transparent lens, the lamp member has a flanged rim with a number of L-shaped notches configured around the inside circumference of the flanged rim. Correspondingly, the rim member has a number of wedges protruding from the outside circumference of the rim member. The rim member is joined to the flanged rim by making the wedges slide into the L-shaped notches, and the optical lens is thereby fixed between the rim member and the transparent lens.
