Personal audio visual system

• US 7,369,672 B2
• Filed: 06/09/2003
• Issued: 05/06/2008
• Est. Priority Date: 06/24/2002
• Status: Expired due to Fees

• Current Assignee: Bruce D. Hirschhorn
• Original Assignee: Bruce D. Hirschhorn
• Inventors: Hirschhorn, Bruce D.
• Primary Examiner(s): Chin; Vivian
• Assistant Examiner(s): Tran; Con P.
• Application Number:
  US10/457,158
• Publication Number:
  US 20030235320A1
• Time in Patent Office: 1,793 Days
• Field of Search: 381/333, 381/306, 381/388, 381/332, 381/87, 381/386, 381/387, 348/827, 248/127, 248/158, 248/176.1, 248/560, 248/575
• US Class Current: 381/333
• CPC Class Codes: F16M 11/041 Allowing quick release of the apparatus
• CPC Class Codes: F16M 11/08 around a vertical axis , e.g. panoramic heads F16M11/12 takes precedence
• CPC Class Codes: F16M 11/14 with ball-joint ball-jointed hinges F16C11/06 ; adjustable mountings employing universal joints for lighting devices F21V21/26 - F21V21/30
• CPC Class Codes: F16M 11/2064 for tilting and panning F16M11/2078 takes precedence
• CPC Class Codes: F16M 11/2092 comprising means allowing depth adjustment, i.e. forward-backward translation of the head relatively to the undercarriage
• CPC Class Codes: F16M 11/24 changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each otherF16M11/42 takes precedence
• CPC Class Codes: F16M 11/40 by means of coilable or bendable legs or spiral shaped legs
• CPC Class Codes: F16M 13/00 Other supports for positioning apparatus or articles heads thereof F16M11/02 ; undercarriages thereof F16M11/20 ; adapted to be stuck in the ground A45F3/44 ; sockets or holders for poles or posts E04H12/22; Means for steadying hand-held apparatus or articles supports for measuring instruments G01D11/30; supports for casings of remote control switching devices H01H9/025
• CPC Class Codes: F16M 2200/044 for balancing rotational movement of the undercarriage
• CPC Class Codes: F16M 2200/063 Parallelogram arms
• CPC Class Codes: F16M 2200/065 with a special structure, e.g. reinforced or adapted for space reduction
• CPC Class Codes: H04R 2499/15 Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops
• CPC Class Codes: H04R 5/02 Spatial or constructional arrangements of loudspeakers
• CPC Class Codes: H04S 1/002 Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution control circuits for electronic adaptation of the sound field H04S7/30
• CPC Class Codes: Y10S 248/917 Video display screen support
• CPC Class Codes: Y10T 403/32008 Plural distinct articulation axes
• CPC Class Codes: Y10T 403/32213 Articulate joint is a swivel
• CPC Class Codes: Y10T 403/32951 Transverse pin or stud
• CPC Class Codes: Y10T 403/32975 Rotatable
• CPC Class Codes: Y10T 403/32983 Rod in socket
• CPC Class Codes: Y10T 403/7041 : including set screw

Abstract

An audio visual system has a housing with a video display and one or more speakers. The speakers are housed in cavities which limit dispersion of the sound generated, and the video display is preferably a directional LCD display. The housing is preferably mounted to a base by an adjustable arm having passages to accommodate enclosed wiring. One adjustable arm has segments joined by dual-pivot joints, while another has segments joined by single pivot joints. In both types of arms, the frictional resistance of the joints can be adjusted. Preferably, the elements of the arm are strung onto the wiring prior to assembly. The housing can also contain a light source to provide a reading light.

Claims

1. An improved audio visual system having,

a housing having a front face that is substantially planar,

a LCD video display with a substantially planar display surface mounted in the front face, the video display being bounded by side edges and top and bottom edges,

a first speaker assembly and a second speaker assembly, each of the speaker assemblies being mounted in the housing for generating sound, each of the speaker assemblies having,

a driver having a driver axis that is substantially perpendicular to the front face of the housing,

a membrane symmetrically disposed about the driver axis, the membrane terminating in a distal end attached to the driver, and a proximal end, the proximal end having a greater cross section than the distal end, the membrane having a nominal diameter at the proximal end, and

a rim attached to the proximal end of the membrane, and

a first speaker cavity for the first speaker assembly and a second speaker cavity for the second speaker assembly,

the improved audio visual system being designed for personal use without disturbing those around the user, the improvement comprising:

each of the speaker cavities intersecting the front face of the housing and having a cavity bottom positioned with respect to the front face so as to define a cavity depth which is sufficient in size to accommodate one of the speaker assemblies while providing a free volume therebehind adequate to assure a responsive speaker assembly and a separation between said cavity bottom and the driver, wherein said cavity depth is less than about twice the nominal diameter of the membrane at the proximal end,

the rim of each of the speaker assemblies being positioned in the cavity so as to establish a setback distance from the front face of the housing, wherein said setback distance is 50% to 100% of the nominal diameter at the proximal end; and

further wherein and each of the speaker cavities terminates at the substantially planar front face;

still further wherein each of the cavities is sized at least as large as the cross section of the membrane throughout the portion of the cavity extending between the rim of the speaker assembly and the front face of the housing; and

further wherein the first speaker cavity has a first bevel that intersects the front face of the housing and is configured such that it extends the first speaker cavity toward the second speaker cavity as the first speaker cavity advances to and intersects the front face of the housing;

and further wherein the second speaker cavity has a second bevel that intersects the front face of the housing and is configured such that it extends the second speaker cavity toward the first speaker cavity as the second speaker cavity advances to and intersects the front face of the housing.

2. The improved audio visual system of claim 1 wherein said first bevel and said second bevel are inclined with respect to the driver axes by an angle α

of between about 30° and

50°

.

3. The improved audio visual system of claim 1 wherein the audio visual system is designed to interface with an entertainment system that generates various media output signals, the audio visual system further comprising:

a base;

means for attaching said base to the housing so as to provide articulation of the housing with respect to said base; and

means for transmitting the media output signals to the LCD video display and to the first speaker assembly and the second speaker assembly residing in the housing.

4. The improved audio visual system of claim 3 wherein said means for attaching said base to the housing so as to provide articulation of the housing with respect to said base further comprises:

a housing bracket for supporting the housing; and

an adjustable arm having,

at least two rigid arm segments,

joints between said at least two rigid arm segments, at least one of said joints being a pivotal joint, and

means for adjusting the torsional load bearing capacity of said joints, said adjustable arm terminating in an arm first end and an arm second end, said arm first end connecting to said base and said arm second end connecting to said housing bracket,

whereby said means for adjusting the torsional load bearing capacity of said joints allows setting the torsional load bearing of said joints to such a level that the position of the housing can be readily adjusted with respect to said base and the housing remains in place when so positioned.

5. The improved audio visual system of claim 4 wherein the housing has a top surface and a bottom surface and said housing bracket attaches to the top surface of the housing, and further wherein the audio visual system further comprises:

LED lamps on the bottom surface of the housing; and

a switch for selectively activating said LED lamps to allow varying the intensity of light produced by said LED lamps.

6. The improved audio visual system of claim 4 wherein said arm segments have arm passages therethrough, and said joints have joint passages therethrough which provide communication between said arm passages to accommodate said means for transmitting the media output signals to the LCD video display and to the first and second speaker assemblies.

7. The improved audio visual system of claim 6 wherein, for at least one of said joints, said means for adjusting the torsional load bearing capacity of said joints further comprises:

a first joint element;

a second joint element, said first and second joint elements being mounted so as to pivot with respect to each other about a common pivot axis;

a friction element positioned between said first joint element and said second joint element; and

means for varying the force of engagement of said first joint element and said second joint element with said friction element, thereby varying the torsional load bearing capacity of said joint.

8. The improved audio visual system of claim 7 wherein,

said first joint element is provided by a joint central region attached to one of said rigid arm segments,

further wherein said second joint element is provided by a pair of joint end caps attached to another of said rigid arm segments, said joint central region rotatably engaging said pair of end caps,

still further wherein said friction element is provided by a pair of resilient rings, each positioned between one of said end caps and said joint central region, and

yet further wherein said means for varying the force of engagement of said first joint element and said second joint element with said friction element is provided by means for varying the position of each of said pair of joint end caps with respect to said joint central region so as to vary the compression of said resilient ring.

9. The improved audio visual system of claim 6 wherein said joints are dual pivoting joints and further wherein, for each of said dual pivoting joints, said means for adjusting the torsional load bearing capacity of said joints further comprises:

a first saddle bracket frictionally engaging and pivotably attaching to one of said arm segments, said first saddle having a first pivot axis, about which said one of said arm segments pivots, and a first bracket passage;

means for varying the force of engagement of said first saddle bracket with said one of said arm segments attached thereto;

a second saddle bracket frictionally engaging and pivotably attaching to another of said arm segments, said second saddle bracket having a second pivot axis, about which said another of said arm segments pivots, and a second bracket passage communicating with said first bracket passage;

means for varying the force of engagement of said second saddle bracket with said another of said arms attached thereto;

a bracket rotation axis about which said first saddle bracket and said second saddle bracket can rotate with respect to each other;

means for rotatably and frictionally engaging said first saddle bracket with said second saddle bracket so as to allow relative rotation therebetween about said bracket rotation axis; and

means for varying the force of the frictional, rotatable engagement of said first saddle bracket with said second saddle bracket.

10. The improved audio visual system of claim 5 wherein said switch also selectively activates power to the LCD display and the speaker assemblies.

11. The improved audio visual system of claim 5 wherein said switch can selectively activate said LED lamps to provide at least,

an OFF level of illumination where none of said LED lamps are illumniated;

a LOW level of illumination where less than all of said LED lamps are illuminated;

a HIGH level of illumination where all of said LED lamps are illuminated.

12. An audio visual system comprising:

a housing having a front face that is substantially planar;

a LCD video display with a substantially planar display surface mounted in said front face, said video display being bounded by side edges and top and bottom edges, said LCD video display being a directional display that can only be viewed by a user when the line of vision of the user is no more than about 25°

from normal to said substantially planar display surface;

a first speaker assembly and a second speaker assembly, each of said speaker assemblies for generating sound being mounted in said housing, each of said speaker assemblies having,

a driver having a driver axis that is substantially perpendicular to said front face of said housing,

a membrane symmetrically disposed about said driver axis, said membrane terminating in a distal end attached to said driver, and a proximal end, said proximal end having a greater cross section than said distal end, said membrane having a nominal diameter at said proximal end, and

a rim attached to said proximal end of said membrane; and

further wherein, said first speaker assembly is provided with a first speaker cavity and the second speaker assembly is provided with a second speaker cavity, each of said speaker cavities terminating at and intersecting said front face of said housing and having a cavity bottom positioned with respect to said front face so as to define a cavity depth which is sufficient in size to accommodate said speaker assembly while providing a free volume therebehind adequate to assure a responsive speaker assembly and a separation between said cavity bottom and said driver,

said rim of said speaker assembly being positioned in said cavity so as to establish a setback distance from said front face of said housing wherein said setback is 50% to 100% of the nominal diameter at said proximal end,

said first speaker cavity having a first bevel that is inclined with respect to said driver axis of said first speaker assembly and which intersects said front face of said housing, said first speaker cavity being configured such that it extends said first speaker cavity toward said second speaker cavity as said first speaker cavity advances to and intersects said front face of said housing, and

said second speaker cavity having a second bevel that is inclined with respect to said driver axis of said second speaker assembly and which intersects said front face of said housing, said second speaker cavity being configured such that it extends said second speaker cavity toward said first speaker cavity as said second speaker cavity advances to and intersects said front face of said housing.

13. The audio visual system of claim 12 wherein said bevels are inclined with respect to said driver axes by an angle a of between about 30°

and 5°

.

14. The audio visual system of claim 12 wherein the audio visual system is designed to interface with an entertainment system that generates various media output signals, the audio visual system further comprising:

a base;

means for attaching said base to said housing so as to provide articulation of said housing with respect to said base; and

means for transmitting the media output signals to said LCD video display and said first speaker assembly and said second speaker assembly residing in said housing.

15. The audio visual system of claim 14 wherein said means for attaching said base to said housing so as to provide articulation of said housing with respect to said base further comprises:

a housing bracket for supporting said housing; and

an adjustable arm having,

at least two rigid arm segments,

joints between said at least two rigid arm segments, at least one of said joints being a pivotal joint, and

means for adjusting the torsional load bearing capacity of said joints, said adjustable arm terminating in an arm first end and an arm second end, said arm first end connecting to said base and said arm second end connecting to said housing bracket,

whereby said means for adjusting the torsional load bearing capacity of said joints allows setting the torsional load bearing of said joints to such a level that the position of the housing can be readily adjusted with respect to said base and the housing remains in place when so positioned.

16. The audio visual system of claim 15 wherein said housing has a top surface and a bottom surface and said housing bracket attaches to said top surface of said housing, and further wherein the audio visual system further comprises:

LED lamps on said bottom surface of said housing; and

a switch for selectively activating said LED lamps to allow varying the intensity of light produced by said LED lamps.

17. The improved audio visual system of claim 16 wherein said switch also selectively activates power to the LCD display and the speaker assemblies.

18. The improved audio visual system of claim 16 wherein said switch can selectively activate said LED lamps to provide at least,

an OFF level of illumination where none of said LED lamps are illumniated;

a LOW level of illumination where less than all of said LED lamps are illuminated;

a HIGH level of illumination where all of said LED lamps are illuminated.

19. The audio visual system of claim 15 wherein said arm segments have arm passages therethrough, and said joints have joint passages therethrough which provide communication between said arm passages to accomodate said means for transmitting the media output signals to said LCD video display and to said first and second speaker assemblies, and

further wherein, for at least one of said joints, said means for adjusting the torsional load bearing capacity of said joints further comprises:

a first joint element;

a second joint element, said first and second joint elements being mounted so as to pivot with respect to each other about a common pivot axis;

a friction element positioned between said first joint element and said second joint element; and

means for varying the force of engagement of said first joint element and said second joint element with said friction element, thereby varying the torsional load bearing capacity of said joint.

20. The audio visual system of claim 15 wherein said arm segments have arm passages therethrough, and said joints have joint passages therethrough which provide communication between said arm passages to accomodate said means for transmitting said media output signals to said LCD video display and to said first and second speaker assemblies, and

further wherein said joints are dual pivoting joints and further wherein, for each of said dual pivoting joints, said means for adjusting the torsional load bearing capacity of said joints further comprises:

a first saddle bracket frictionally engaging and pivotably attaching to one of said arm segments, said first saddle having a first pivot axis, about which said one of said arm segments pivots, and a first bracket passage;

means for varying the force of engagement of said first saddle bracket with said one of said arm segments attached thereto;

a second saddle bracket frictionally engaging and pivotably attaching to another of said arm segments, said second saddle bracket having a second pivot axis, about which said another of said arm segments pivots, and a second bracket passage communicating with said first bracket passage;

means for varying the force of engagement of said second saddle bracket with said another of said arms attached thereto;

a bracket rotation axis about which said first saddle bracket and said second saddle bracket can rotate with respect to each other;

means for rotatably and frictionally engaging said first saddle bracket with said second saddle bracket so as to allow relative rotation therebetween about said bracket rotation axis; and

means for varying the force of the frictional, rotatable engagement of said first saddle bracket with said second saddle bracket.