Ultralight loudspeaker enclosures

• US 4,811,403 A
• Filed: 06/10/1987
• Issued: 03/07/1989
• Est. Priority Date: 06/10/1987
• Status: Expired due to Term

• Current Assignee: Bose Corporation
• Original Assignee: Sound Intellectual Property PLLC
• Inventors: Henricksen, Clifford, Lemon, John
• Primary Examiner(s): Caldwell, Sr., John W.
• Assistant Examiner(s): Oberley, Alvin
• Application Number:
  US07/061,135
• Time in Patent Office: 636 Days
• Field of Search: 381/87, 381/88, 381/111, 381/153, 381/155, 381/159, 381/162, 381/164, 181/148, 181/150, 181/151, 181/152, 181/171, 181/179, 181/198, 181/199, 181/141, 181/145, 361/380, 361/381, 361/384, 361/386, 361/388, 361/389
• US Class Current: 381/87
• CPC Class Codes: H04R 1/02 Casings; Cabinets ; Supports therefor; Mountings therein H04R1/28 takes precedence ; attachments for microphones H04R1/08; mounting of transducers in earpieces H04R1/1075

Abstract

A loudspeaker and enclosure assembly, comprising: a load bearing member exhibiting good thermal conductivity; at least one loudspeaker mounted on the load bearing member and in thermal engagement therewith; and, an enclosure having walls formed of rigid light-weight material mounted on the load bearing member to enclose the at least one loudspeaker, whereby the assembly is easily moved and mounted and thermal energy generated by operation of the loudspeaker is effectively dissipated through the load bearing member. The enclosure may be a rigid foam-filled member defining a generally funnel-shaped bore therein to form a horn for the loudspeaker, whereby a modular construction of interchangeable integrally formed enclosures and horns can be achieved.

Claims

1. A loudspeaker and enclosure assembly, comprising:

a thermally conductive load bearing member forming a heat dissipator for the assembly;

at least one loudspeaker mounted on the thermally conductive load bearing member, in thermal engagement therewith; and

,

an enclosure having walls formed of rigid light-weight material mounted on the load bearing member to enclose the at least one loudspeaker,

whereby the assembly is easily moved and mounted, mounting loads of the at least one loudspeaker and the enclosure are borne substantially entirely by the load bearing member and thermal energy generated by operation of the at least one loudspeaker is effectively dissipated through the thermally conductive load bearing member.

2. The assembly of claim 1, wherein the load bearing member comprises means for enhancing thermal energy dissipation.

3. The assembly of claim 2, wherein the means for enhancing thermal energy dissipation comprises at least one air channel formed in the load bearing member.

4. The assembly of claim 2, wherein the means for enhancing thermal energy dissipation comprises a fan.

5. The assembly of claim 3, wherein the means for enhancing thermal energy dissipation comprises a fan for circulating air through the at least one air channel.

6. The assembly of claim 1, further comprising an electric amplifier for the at least one loudspeaker, mounted on the load bearing member and in thermal engagement therewith, whereby further thermal energy generated by the amplifier is effectively conducted away from the amplifier through the load-bearing member and dissipated therefrom together with the thermal energy generated by the at least one loudspeaker.

7. The assembly of claim 1, wherein the at least one loudspeaker comprises a magnet assembly, the loudspeaker being mounted on the load bearing member by the magnet assembly.

8. the assembly of claim 1, further comprising means forming an air seal between an exterior portion of the at least one loudspeaker and the enclosure, the air seal means being ineffective for transmitting load bearing stress.

9. The assembly of claim 1, wherein the enclosure is a rigid foam-filled member defining a generally funnel-shaped bore therein to form a horn for the at least one loudspeaker, whereby a modular construction of interchangeable integrally formed enclosures and horns is achieved.

10. The assembly of claim 1, wherein the load bearing member comprises means for rigging the assembly.

11. The assembly of claim 1, comprising a plurality of loudspeakers mounted on the load bearing member and enclosed by the enclosure, whereby thermal energy generated by operation of all of the loudspeakers is effectively dissipated through the load bearing member.

12. The assembly of claim 11, further comprising at least one electric amplifier for the plurality of loudspeakers, mounted on the load bearing member and in thermal engagement therewith, whereby further thermal energy generated by the at least one amplifier is also effectively conducted away from the at least one amplifier through the load bearing member and dissipated therefrom together with the thermal energy generated by the plurality of loudspeakers.

13. The assembly of claim 12, further comprising means for enhancing radiation of thermal energy from the load bearing member to ambient air.

14. The assembly of claim 13, wherein the means for enhancing thermal radiation comprises:

the load bearing member being formed with at least one air channel running at least partially therethrough; and

,

fan means for circulating air through the at least one channel.

15. An integrated electro-acoustical driver and enclosure assembly, comprising:

at least one electro-acoustical driver having an electrical signal input and an acoustic driver output port;

a rigid solid foam horn/enclosure member defining a generally funnel-shaped bore therein to form a horn for the at least one electro-acoustical driver, the bore defining an acoustic horn input port and an acoustic horn output port; and

,

thermally conductive means for holding the at least one electro-acoustical driver and the foam member in rigid juxaposition with the acoustic driver output port of the at least one electro-acoustical driver and the acoustic horn input port of the foam member in operational engagement with one another, mounting loads of the at least one electro-acoustical driver and the enclosure being borne substantially entirely by the holding means and thermal energy generated by the at least one electro-acoustical driver being dissipated by the holding means,

whereby a modular construction of interchangeable integrally formed enclosure/horn members and electro-acoustical drivers is achieved.

16. The assembly of claim 15, further comprising air seal means disposed between the at least one driver and the foam member.

17. The assembly of claim 15, wherein the means for holding the at least one driver and the foam member in rigid juxaposition comprises a load bearing member to which each of the at least one driver and the foam member are independently mounted.

18. The assembly of claim 17, wherein the load bearing member is a thermally conductive member forming a heat dissipator for the assembly and the at least one driver is mounted in thermal engagement with the load bearing member.

19. The assembly of claim 17, wherein the load bearing member is disposed substantially outside of the foam block.

20. The assembly of claim 17, wherein the load bearing member comprises means for rigging the assembly.