摘要:
A photoflash unit comprising a horizontal linear array of flashlamps enclosed within a one-piece housing member having a light-transmitting front portion folded over a back portion containing a plurality of lamp-receiving cavities in which respective lamps are disposed. The housing is a formed sheet of plastic film having a linear fold disposed horizontally along the top of the array of cavities, which are selectively aluminized to provide a reflective coating on the cavity surfaces. A pair of lead-in wires from each of the lamps are connected to conductive circuit patterns on one side of a printed circuit board sandwiched between a set of tabs which run along the bottom of the front and back portions of the housing and are secured together. The sides of the housing are also secured so that the lamps, lead-in wires and connections are disposed within a secured enclosure, with a plurality of conductive connector terminals being disposed on a tab which projects from the printed circuit board and extends exteriorly of the secured enclosure.
摘要:
A multilamp photoflash unit has a housing formed to provide a multiplicity of cavities, each having a reflective surface and formed to receive a flashlamp. Each of the cavities has a reflective surface width opening to flashlamp diameter ratio of less than about 1.2, and the cavity configuration includes a planar rear wall section and a pair of bi-planar sidewall sections.
摘要:
A photoflash lamp array having a plurality of 2n flashlamps, a common terminal connected to one lead-in wire of each of the lamps, and a plurality of n selective terminal means, each associated with a respective pair of the lamps and directly connected to the non-common lead-in wire of one lamp of each pair. A respective normally open switch is coupled between the non-common lead-in wires of each of the pairs of lamps associated with a selective terminal. Each of the switches is responsive to the flashing of the directly connected lamp of an associated pair so as to electrically connect the other lamp of the pair to the associated selective terminal. In one specific example, ten lamps are selectively paired to be operated sequentially by firing pulses successively applied to five selective terminals together with a common terminal.
摘要:
A circuit board assembly and method of making wherein the assembly includes a dielectric substrate, at least one radiation sensitive switch, and at least one conductive member in electrical contact with the switch. Portions of the switch and the conductive member are die-stamped into the dielectric substrate to achieve the contact without serving the switch material.
摘要:
A photoflash unit comprising a horizontal linear array of photoflash lamp enclosed within a one-piece housing member having a light-transmitting front portion folded-over a back portion containing a plurality of lamp-receiving cavities in which respective lamps are disposed. The housing is a formed sheet of plastic film having a linear fold disposed horizontally along the top of the array of cavities. A pair of lead-in wires from each of the lamps are connected to conductive circuit patterns on one side of a printed circuit board sandwiched between a set of tabs which run along the bottom of the front and back portions of the housing. The housing tabs are secured together and to the circuit board by a plurality of staples symmetrically disposed along the tabs. Each of the staples has a pair of legs extending through both the housing tabs and the circuit board, with the center region of each staple bearing against an external surface of one of the tabs and the staple legs being clinched onto an external surface of the other of the tabs.
摘要:
Venting apertures for multi-lamp photoflash units having a plurality of spaced flashlamp receiving cavities are provided intermediate the cavities whereby no direct path for fragments from a flashlamp within a cavity to the exterior of the unit is provided. In another aspect, a reflector unit having venting apertures aligned with the venting apertures of the above-described photoflash unit is enclosed with the photoflash unit with no direct path for projectiles from the photoflash lamp to the exterior of the photoflash unit.
摘要:
A circuit board assembly wherein the assembly includes a dielectric substrate, at least one radiation sensitive switch, and at least one conductive member in electrical contact with the switch. Portions of the switch and the conductive member are die-stamped into the dielectric substrate to achieve the contact without severing the switch material.
摘要:
A photoflash unit comprising a horizontal linear array of flashlamps enclosed within a one-piece housing member having a light-transmitting front portion folded over a back portion containing a plurality of lamp-receiving cavities in which respective lamps are disposed. A printed circuit board is joined to the housing member, and a pair of lead-in wires from each of the lamps are connected to conductive circuit patterns disposed solely on one side of the circuit board. The circuit patterns include a plurality of connector terminals which are located adjacent one another on a flat tab which projects from one edge of the circuit board for insertion into the receiving socket of a firing pulse source. The tab contains a plurality of symmetrically disposed apertures or recesses which render the tab releasably engageable by socket means independent of firing pulse contacts for securely retaining the unit in the socket.
摘要:
A photoflash unit comprising a horizontal linear array of flashlamps enclosed within a one-piece housing member having a light-transmitting front portion folded-over a back portion containing a plurality of lamp-receiving cavities in which respective lamps are disposed. The housing is a formed sheet of plastic film having a linear fold disposed horizontally along the top of the array of cavities, which are aluminized to provide a reflective coating on the cavity surfaces. A pair of lead-in wires from each of the lamps are connected to conductive circuit patterns on one side of a printed circuit board sandwiched between a set of tabs which run along the bottom of the front and back portions of the housing. The bottom periphery of the housing is secured together by means of a plurality of staples having legs which extend through the front and back tabs of the circuit board and are clinched onto the exterior surface of the front tab. The front portion of the housing includes a window area which lies in a plane offset from the front tab and joined thereto by a web. A label comprising an adhesive-backed sheet of substantially opaque material is affixed to the front portion of the housing and disposed to cover both the staples and the web, the web covering providing selective shielding of light radiated from flashing lamps. The back of the label can be reflective for redirecting shielded light toward the reflective cavities behind the lamps for subsequent redirection as usable light.