Side-mounted flashlamps

• US 4,690,637 A
• Filed: 02/19/1986
• Issued: 09/01/1987
• Est. Priority Date: 03/06/1985
• Status: Expired due to Fees

• Current Assignee: GTE Products Corporation (Ams-Osram AG)
• Original Assignee: GTE Products Corporation (Ams-Osram AG)
• Inventors: Brower, Boyd G.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Odar, H. A.
• Application Number:
  US06/831,227
• Time in Patent Office: 559 Days
• Field of Search: 431/357, 431/358, 431/359, 431/360, 431/362, 431/365, 362/4, 362/6, 362/11, 362/13, 362/15, 362/16, 362/17, 362/339
• US Class Current: 431/359
• CPC Class Codes: G03B 15/0457 Ignition mechanisms for sequential ignition of flash lamps
• CPC Class Codes: H05K 2201/10113 Lamp
• CPC Class Codes: H05K 2201/10446 Mounted on an edge
• CPC Class Codes: H05K 3/3405 Edge mounted components, e.g. terminals

Abstract

A miniaturized multilamp photoflash array includes a printed circuit board with a common circuit extending along one edge and a plurality of contact pads along an opposite edge and a plurality of flashlamps mounted in a direction normal to the edges of the circuit board.

Claims

1. In a miniaturized multilamp photoflash array having a base member formed to receive a circuit board having a longitudinal axis, a tab member and a printed circuit thereon, the improvement wherein said printed circuit is on a single surface of said circuit board and includes an electrically conductive circuit extending from said tab member along one edge of said circuit board and parallel to said longitudinal axis, a plurality of spaced contact pads extending along an opposite edge of said circuit board and parallel to said longitudinal axis, a hot circuit extending from said tab member, a plurality of normally-open (N/O) switches connecting said hot circuit to a following flashlamp upon activation of a flashlamp, a plurality of normally-closed (N/C) switches for connecting said common circuit to said hot circuit, a plurality of flashlamps each aligned normal to said longitudinal axis of said circuit board with a pair of leads connected to a pair of contact pads and extending over said opposite edge of said circuit board, and a light transparent cover member enclosing said flashlamps and printed circuit board and affixed to said base member.

2. The improvement of claim 1 wherein said normally-closed (N/C) switches are formed to disconnect a flashlamp from said common circuit upon energization of said flashlamp.

3. The improvement of claim 1 wherein is included N-flashlamps, N-1 normally-open (N/O) switches and N-1, normally-closed (N/C) switches.

4. The improvement of claim 1 wherein said light transparent cover member includes a lens portion associated with said plurality of flashlamps wherein each flashlamp is focused by a lens.

5. A miniaturized multilamp photoflash array comprising

a circuit board having a longitudinal axis and a tab member with an electrically conductive printed circuit on a single surface of said circuit board, said printed circuit including an electrically conductive common circuit extending from said tab member and along one edge of said circuit board parallel to said longitudinal axis, a plurality of spaced contact pads extending along the opposite edge of said circuit board parallel to said longitudinal axis and an electrically conductive hot circuit extending from said tab member and formed for connection to every other one of said spaced contact pads;

a plurality of flashlamps extending in a direction normal to said longitudinal axis of said circuit board with each flashlamp having a pair of leads bent over said opposite edge of said circuit board and connected to a pair of adjacent contact pads;

a plurality of normally-closed (N/C) switches connecting said common circuit to said hot circuit for all but one of said plurality of flashlamps;

a plurality of normally-open (N/O) switches connecting said hot circuit to a following flashlamp upon activation of a flashlamp;

a base member formed to receive said circuit board; and

a light transparent plastic cover member affixed to said base member and enclosing said flashlamps.

6. The miniaturized multilamp photoflash array of claim 5 wherein said array includes N-flashlamps, N-1 normally closed (N/C) switches and N-1 normally-open (N/O) swtiches.

7. The miniaturized multilamp photoflash array of claim 5 wherein said normally-open (N/O) switches respond to energization of a flashlamp to provide electrical connection of said hot circuit to a following flashlamp.

8. The miniaturized multilamp photoflash array of claim 5 wherein said normally-closed (N/C) switches respond to energization of a flashlamp to disconnect said flashlamp from said common circuit.

9. The miniaturized multilamp photoflash array of claim 5 wherein said light transparent cover member includes a lens associated with each one of said flashlamps.