Omni-directional sound system

• US 5,886,304 A
• Filed: 02/19/1997
• Issued: 03/23/1999
• Est. Priority Date: 02/20/1996
• Status: Expired due to Fees

• Current Assignee: Dieter Schlenzig, Thomas Apfel
• Original Assignee: Dieter Schlenzig, Thomas Apfel
• Inventors: Schlenzig, Dieter, Apfel, Thomas
• Primary Examiner(s): Dang, Khanh
• Application Number:
  US08/802,873
• Time in Patent Office: 762 Days
• Field of Search: 181/148, 181/152, 181/153, 181/155, 181/156, 181/196, 181/199, 381/90, 381/154, 381/158, 381/160
• US Class Current: 181/155
• CPC Class Codes: F21V 33/0056 Audio equipment, e.g. music instruments, radios or speakers
• CPC Class Codes: H04R 1/028 associated with devices performing functions other than acoustics, e.g. electric candles
• CPC Class Codes: H04R 1/32 for obtaining desired directional characteristic only specially adapted for hearing aids H04R25/40
• CPC Class Codes: H04R 1/34 by using a single transducer with sound reflecting, diffracting, directing or guiding means specially adapted for hearing aids H04R25/402

Abstract

In an omni-directional sound system such as a sound-light combination arrangement having at least one loudspeaker and optionally at least one light source, a bass loudspeaker arrangement includes a cylindrical casing having end walls at which are installed a bass loudspeaker and an insert casing respectively. The insert casing forms one or more bass reflection spaces within the casing. A sound deflection cone is arranged with its tip opposite the bass loudspeaker.

Claims

1. An omni-directional sound system comprises:

a control unit adapted to actuate different loudspeakers, including a bass loudspeaker means; and

the bass loudspeaker means including

a cylindrical casing with a fist radial surface, a second radial surface and a peripheral wall,

a bass loudspeaker connected to the first radial surface,

a first sound deflection means including a sound deflection cone arranged with its tip opposite the bass loudspeaker,

an insert casing connected to the second radial surface and provided with at least one sound outlet opening, and

a second sound deflection means arranged at a spacing relative to the at least one sound outlet opening,

wherein the insert casing forms with respect to the wall of the cylindrical casing an annular space which acts as a base reflection space, and symmetrically arranged sound radiation openings extending from said space.

2. A system as set forth in claim 1

wherein the insert casing is in the form of a bass reflection tube of predetermined length, which is open at both ends and which is arranged on the axis of the bass loudspeaker, and

wherein the second sound deflection means is in the form of a second sound deflection cone having a tip directed towards the opening of the bass reflection tube.

3. A system as set forth in claim 1

wherein the sound radiation openings are in the form of recesses in a radial wall of the insert casing.

4. A system as set forth in claim 1

including rib means for subdividing the annular space to separate off individual bass reflection spaces each associated with a respective sound radiation opening.

5. A system as set forth in claim 1

wherein the insert casing is adapted in its interior to accommodate a light source.

6. A system as set forth in claim 1

wherein the loudspeakers actuable by the control unit include an exponential tweeter at the tip of a deflection cone and further including a further deflection cone having a tip opposite the tweeter.