WO2016011844A1 - 一种内置双膜共振音箱的电视机 - Google Patents

一种内置双膜共振音箱的电视机 Download PDF

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Publication number
WO2016011844A1
WO2016011844A1 PCT/CN2015/079749 CN2015079749W WO2016011844A1 WO 2016011844 A1 WO2016011844 A1 WO 2016011844A1 CN 2015079749 W CN2015079749 W CN 2015079749W WO 2016011844 A1 WO2016011844 A1 WO 2016011844A1
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WO
WIPO (PCT)
Prior art keywords
wall
speaker
box
box wall
bass radiator
Prior art date
Application number
PCT/CN2015/079749
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English (en)
French (fr)
Inventor
郑全录
Original Assignee
深圳纽斯声学系统有限公司
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Filing date
Publication date
Application filed by 深圳纽斯声学系统有限公司 filed Critical 深圳纽斯声学系统有限公司
Priority to EP15825262.7A priority Critical patent/EP3174310A4/en
Publication of WO2016011844A1 publication Critical patent/WO2016011844A1/zh
Priority to US15/394,705 priority patent/US20170111605A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
    • H04N5/642—Disposition of sound reproducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/028—Casings; Cabinets ; Supports therefor; Mountings therein associated with devices performing functions other than acoustics, e.g. electric candles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2811—Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
    • H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops

Definitions

  • the invention belongs to the field of televisions, in particular to a television set with a built-in double film resonance speaker.
  • the TV is equipped with two identical speakers with left and right symmetry.
  • each speaker there are two mutually symmetrical bass radiators and corresponding speaker groups, so that a small size speaker (such as a 53mm diameter speaker) can be used to make a very large volume.
  • Small, light-weight speaker so that the speaker can be easily installed on a flat-panel TV, and it can also emit a powerful bass and loud and clear mid-range and high-pitched sound, so that the flat-panel TV image is good and the sound is good.
  • the left and right sides of the television set of the invention are symmetrically arranged with independent speakers
  • the sound box comprises a box body and a speaker group respectively located in the box body, a front bass radiator and a rear bass radiator, wherein the front bass radiator is installed at a front speaker wall of the casing, a speaker group mounted on the front tank wall on one side or the left and right sides of the front bass radiator, the rear bass radiator being installed in front of the front
  • the tank wall is opposite the rear tank wall of the tank, and the rear bass radiator corresponds to the front bass radiator.
  • the front bass radiator is located at one side of the front box wall, and a speaker group mounted on the other side of the front box wall is provided on one side of the front bass radiator; the diaphragm of the speaker group faces the box Externally disposed, the front tank wall is parallel to a rear tank wall on which the rear bass radiator is mounted;
  • the front bass radiator is located at one side of the front box wall, and one side of the front bass radiator is provided with a speaker group mounted on the other side of the front box wall; the front box wall is mounted with a front bass radiator portion Concave inside the box Forming a front inner tank wall, the front inner tank wall and the front tank wall being a front side tank wall; the diaphragm of the speaker group is disposed toward the outside of the tank, and the front bass radiator is located in the front
  • the wall of the box is parallel or inclined to the front box wall where the speaker group is located; the back box wall is parallel to the front inner box wall; and the rear box wall portion of the rear bass radiator is recessed toward the inside of the box body, after forming An inner box wall, between the rear inner box wall and the rear box wall is a rear side box wall; the diaphragm of the speaker group is disposed toward the outside of the box, and the front inner box wall and the front of the front bass radiator are The rear inner box wall where the bass radiator is located is parallel, and the front
  • the front bass radiator is installed at an intermediate position of the front box wall, and the speaker group is symmetrically disposed on the left and right sides of the front bass radiator, that is, the left speaker group and the right speaker group; and the left speaker group and the right speaker group are The diaphragms are all disposed toward the outside of the box, and the front box wall is parallel to the back box wall on which the rear bass radiator is mounted;
  • the front bass radiator is installed at an intermediate position of the front box wall, and the speaker group is symmetrically disposed on the left and right sides of the front bass radiator, that is, the left speaker group and the right speaker group; and the front box of the front bass radiator is installed
  • the wall portion is recessed toward the inside of the box body to form a front inner box wall, and the left speaker group and the right speaker group are respectively mounted on the left front box wall and the right front box wall on the left and right sides of the front inner box wall, the front inner box wall
  • the left inner box wall is between the left side and the left front box wall, and the right inner box wall is between the right side of the front inner box wall and the right front box wall;
  • the left front box wall and the right front box wall have the same shape and size, and the box is
  • the center line of the body width direction is symmetrically disposed, and is parallel to or inclined to the front inner box wall;
  • the rear bass radiator is located at an intermediate position of the entire rear box wall, and the rear box wall is parallel to the
  • the speakers on the left and right sides of the TV are all connected in an electric sound, the speaker on the left side of the TV is connected to the left channel of the TV, and the speaker on the right side of the TV is connected to the right channel of the TV;
  • the front bass radiator and the rear bass radiator are exactly the same bass radiator, and the front bass radiator is symmetrically mounted with the rear bass radiator, and the diaphragm plane of the front bass radiator and the diaphragm of the rear bass radiator The planes are parallel, the distance between the diaphragm plane of the front bass radiator and the diaphragm plane of the rear bass radiator is smaller than the diameter of each individual speaker unit in the speaker group; each speaker unit in the speaker group is all
  • the diaphragm case is installed outside the body, and when there are a plurality of speaker units in the speaker group, all of them are electrically in-phase connected.
  • the invention adopts two speakers with left and right symmetry, and there are two symmetrical lows in each speaker.
  • the sound radiator and the corresponding speaker set so that a small size speaker can be made with a small size speaker, which can be matched with a flat-panel TV, which is convenient to install on a flat-panel TV, and can also be thickened.
  • the powerful bass and loud and clear mid-range and treble so that the flat-panel TV image is good and the sound is good.
  • the speaker of the TV of the invention adopts the double film (front and rear bass radiator) passive resonance, which generates the acoustic airflow resonance while multiplying the bass diaphragm area, and the dual effect makes the bass playback effect revolutionized.
  • small speakers such as 2 ⁇
  • you can emit large-size speakers such as 5 ⁇ ⁇ 6.5 ⁇
  • the low-frequency sound of the corresponding large-sized speakers With small speakers (such as 2 ⁇ ), you can emit large-size speakers (such as 5 ⁇ ⁇ 6.5 ⁇ ) and the low-frequency sound of the corresponding large-sized speakers.
  • the speaker unit of the speaker of the television of the invention (such as 2 ⁇ ) has a small voice coil, a very small quality, and the diaphragm is mounted outward, so that the intermediate frequency and high frequency sound waves in the audio are directly radiated to the atmospheric space. , can get high quality intermediate frequency and high frequency playback quality.
  • the physical acoustic design of the speaker of the television of the invention is scientific, reasonable, simple, easy to manufacture, low in cost, and very practical.
  • the present invention successfully solves the problem that the flat-panel TV becomes thinner and the sound quality becomes worse.
  • Figure 1 is a front view showing the structure of the present invention
  • Figure 2 is a bottom view of Figure 1;
  • Figure 3 is a schematic perspective view of the present invention.
  • FIG. 4A is a front elevational view showing the structure of a double film resonance speaker according to Embodiment 1 of the present invention.
  • Figure 4B is a top cross-sectional view of Figure 4A;
  • 5A is a front view showing the structure of a double film resonance speaker according to a second embodiment of the present invention.
  • Figure 5B is a top cross-sectional view of Figure 5A;
  • 6A is a front view showing the structure of a double film resonance speaker according to a third embodiment of the present invention.
  • Figure 6B is a top cross-sectional view of Figure 6A;
  • FIG. 7A is a front view showing the structure of a double film resonance speaker according to a fourth embodiment of the present invention.
  • Figure 7B is a plan sectional view of Figure 7A;
  • FIG. 8A is a front elevational view showing the structure of a double film resonance speaker according to a fifth embodiment of the present invention.
  • Figure 8B is a top cross-sectional view of Figure 8A;
  • FIG. 9A is a front elevational view showing the structure of a double film resonance speaker according to Embodiment 6 of the present invention.
  • Figure 9B is a plan sectional view of Figure 9A;
  • 1 is the TV
  • 2 is the left speaker
  • 3 is the right speaker
  • 4 is the box
  • 5 is the speaker group
  • 6 is the front box wall
  • 7 is the back box wall
  • 8 is the front bass radiator
  • 9 is the rear bass Radiator
  • 10 is the front inner box wall
  • 11 is the front side box wall
  • 12 is the rear inner box wall
  • 13 is the rear side box wall
  • 14 is the left speaker group
  • 15 is the right speaker group
  • 16 is the left inner box wall.
  • 17 is the right inner box wall
  • 18 is the left front box wall
  • 19 is the right front box wall
  • 20 is the left inner rear box wall
  • 21 is the right inner rear box wall
  • 22 is the rear outer box wall.
  • the television set 1 of the present invention can be a flat-panel television set of the prior art.
  • the left and right sides of the television set 1 are symmetrically provided with independent speakers, that is, a left speaker 2 and a right speaker 3, each
  • the speakers comprises a box body 4 and a speaker group respectively located in the box body 4, a front bass radiator 8 and a rear bass radiator 9.
  • the box body 4 is a single-chamber sealed box body, and the front bass radiator 8 is installed.
  • a speaker group mounted on the front tank wall 6 is provided on one side or both sides of the front bass radiator 8, and the rear bass radiator 9 is mounted opposite to the front tank wall 6.
  • the rear box wall 7 of the casing 4 corresponds to the front bass radiator 9 corresponding to the front bass radiator 8.
  • the left speaker 2 and the right speaker 3 of the present embodiment are two identical speakers, and the two speakers are first made.
  • a speaker group 5, a front bass radiator 8 and a rear bass radiator 9 are mounted in the box 4, a speaker group 5, a front bass radiator 8 and a rear bass radiator 9 are mounted.
  • the box body 4 is a sealed casing, which can be manufactured by injection molding or other materials such as metal.
  • the material for example, aluminum, iron), wood or plastic is processed and manufactured;
  • the casing 4 of the present embodiment is manufactured by an open mold injection molding method.
  • the appearance is designed, and then the casing is designed to be opened, and then manufactured by an injection molding machine; the outer dimensions of the casing 4 of the present embodiment are: 130 mm (length) ⁇ 36 mm (width) ⁇ 59 mm (height).
  • the box body 4 has a front box wall 6, a rear box wall 7 and left and right box walls and upper and lower box walls, and the front bass radiator 8 is mounted on one side of the front box wall 6, one of the front bass radiators 8
  • the side is provided with a speaker group 5 mounted on the other side of the front box wall 6, and each of the speaker unit 5 is mounted outward.
  • the rear bass radiator 9 is mounted on the rear tank wall 7, the front and rear tank walls 6, 7 are parallel to each other, and the front bass radiator 8 is equal to the rear bass radiator 9 and is symmetrically mounted.
  • the front bass radiator 8 and the rear bass radiator 9 are exactly the same bass radiator, that is, the front and rear bass radiators 8, 9 are made of the same material, and the size and shape are the same; the so-called bass radiator is also called an empty speaker, and only
  • the diaphragm, referred to as the membrane has a diaphragm area equal to or larger than the sum of the diaphragm areas of all the speaker units in the speaker group 5; in this embodiment, the diaphragm area of each of the bass radiators is 3500 mm 2 .
  • the shape of the front bass radiator 8 and the rear bass radiator 9 may be elliptical or circular or square; the structure may be flat or tapered; the embodiment uses an elliptical shape. Flat-type bass radiator, pay attention to the seal between the bass radiator and the box 4 when installing.
  • the front bass radiator 8 is mounted symmetrically with respect to the rear bass radiator 9, the diaphragm plane of the front bass radiator 8 and the diaphragm plane of the rear bass radiator 9 are parallel, the diaphragm plane of the front bass radiator 8 and the rear bass radiation
  • the mutual distance between the diaphragm planes of the device 9 is smaller than the diameter of each individual speaker unit in the speaker group 5, and the pitch may be 25 mm to 50 mm, which is 30 mm in this embodiment.
  • the speaker group 5 is composed of one to four speaker units, all of which are full-range speakers. When composed of a plurality of speaker units, all the speaker units are the same speaker; each speaker unit has a diameter of 36 mm to 66 mm.
  • the speaker group 5 of the present embodiment is composed of a full-range speaker unit having a diameter of 53 mm (2 ⁇ speaker); when the speaker unit 5 is composed of a plurality of speaker units, all the speaker units are electrically connected in phase. , can be connected in series, can also be connected in parallel, and can also be stringed in parallel.
  • the left speaker 2 and the right speaker 3 are symmetrically mounted on the television 1 respectively, and form a complete whole with the front frame and the rear cover of the television 1.
  • the left speaker 2 and the right speaker 3 should be connected in an electro-acoustic phase, that is, the positive (+) pole of the left speaker 2 is connected to the positive (+) pole of the left (L) channel audio output of the television 1, and the negative (-) pole is connected.
  • Negative (-) pole, the positive (+) pole of the right speaker 3 is connected to the positive (+) pole of the right (R) channel audio output of the television 1, and the negative (-) pole is connected to the negative (-) pole.
  • the mounting directions of the left speaker 2 and the right speaker 3 are the same, and the mounting direction of the speaker group 5 of the left speaker 2 and the right speaker 3 is oriented.
  • the left speaker 2 and the right speaker 3 can be installed in the lower part of the television 1. At this time, the orientation of the left speaker 2 and the right speaker 3 can be downward or forward or backward; the left speaker 2 and the right speaker 3 can be installed. In the upper part of the television 1, at this time, the orientation of the left and right speakers 2 and 3 can be upward, forward or backward; the left and right speakers 2 and 3 can also be installed in the middle or the middle of the left side of the television 1 At this time, the orientation of the left speaker 2 and the right speaker 3 may be directed toward the front, the rear, or the left and right.
  • the left speaker 2 and the right speaker 3 of the embodiment are installed in the lower part of the television 1, and the speaker orientation is that the left speaker 2 and the right speaker 3 are all facing downward; at this time, it should be noted that the left and right speakers 2, 3 are symmetrically installed. That is, the speaker group 5 end of the left speaker 2 is on the left outer side of the television 1, and the speaker group 5 end of the right speaker 3 is on the right outer side of the television 1.
  • the front hopper radiator 8 is partially recessed toward the inside of the casing 4 to form the front inner tank wall 10.
  • the front inner tank wall 10 and the front tank wall 6 are the front side tank walls 11.
  • the diaphragm of the speaker group 5 is disposed outside the box 4, and the front inner box wall 10 where the front bass radiator 8 is located is parallel or inclined to the front box wall 6 where the speaker group 5 is located (the front inner box wall 10 and the front of the present embodiment)
  • the tank walls 6 are parallel) and the rear tank wall 7 is parallel to the front inner tank wall 10.
  • the front side tank wall 11 of the present embodiment is parallel to the left and right tank walls and is perpendicular to the front tank wall 6, the rear tank wall 7, and the front inner tank wall 10.
  • the rear tank wall 7 of the bass radiator 9 is partially recessed toward the inside of the casing 4 to form a rear inner tank wall 12, and between the rear inner tank wall 12 and the rear tank wall 7, is a rear side tank wall 13.
  • the diaphragm of the speaker group 5 is disposed outside the box 4, and the front inner box wall 10 where the front bass radiator 8 is located is parallel to the rear inner box wall 12 where the rear bass radiator 9 is located, and the front inner box wall 10 and the rear inner wall
  • the box wall 12 corresponds to the same shape and shape; the front inner box wall 10 is parallel or inclined to the front box wall 6 where the speaker group 5 is located (the front inner box wall 10 of the embodiment is parallel to the front box wall 6), and the rear inner box The wall 12 is parallel or inclined to the rear tank wall 7 (the rear inner tank wall 12 of the present embodiment is parallel to the rear tank wall 7).
  • the front tank wall 6 of the present embodiment is parallel to the rear tank wall 7, and the front side tank wall 11 is coplanar with the rear side tank wall 13 and parallel to the left and right tank walls, and perpendicular to the front tank wall 6 and the rear tank wall. 7. Front inner box wall 10 and rear inner box wall 12.
  • a front bass radiator 8 is installed in the middle of the front box wall 6, that is, in the middle of the left and right speaker groups 14, 15;
  • the rear bass radiator 9 is mounted on the rear box wall 7, and the rear box wall 7 is
  • the front box walls 6 are parallel, the front bass radiator 8 is equal to the rear bass radiator 9 and is symmetrically mounted;
  • the diaphragm plane of the front bass radiator 8 is parallel to the diaphragm plane of the rear bass radiator 9, front bass radiation
  • the mutual distance between the diaphragm plane of the device 8 and the diaphragm plane of the rear bass radiator 9 is smaller than the diameter of each of the left and right speaker groups 14, 15 and the pitch may be 25 mm to 50 mm, which is 30 mm in this embodiment.
  • the mounting planes of the left speaker group 14 and the right speaker group 15 may be coplanar with the mounting plane of the front bass radiator 8, or the mounting planes of the left and right speaker groups 14, 15 may protrude from the mounting plane of the front bass radiator 8;
  • the embodiment is such that the mounting planes of the left and right speaker sets 14, 15 are coplanar with the mounting plane of the front bass radiator 8. which is:
  • the front bass radiator 8 and the left speaker group 14 and the right speaker group 15 on the left and right sides thereof are all mounted on the front box wall 6, and the rear box wall 7 of the rear bass radiator 9 is mounted.
  • Parallel to the front box wall 6, that is, the horizontal section of the speaker is rectangular.
  • the mounting plane shapes of the left speaker group 14 and the right speaker group 15 are the same, symmetrically disposed on the left and right sides of the front bass radiator 8, and the heights of the left and right speaker groups 14, 15 are equal.
  • the rear bass radiator 9 is installed at an intermediate position of the entire rear tank wall 7.
  • the front and rear woofer radiators 8, 9 are relatively symmetrically mounted, the diaphragm plane of the front woofer 8 and the diaphragm plane of the rear woofer 9 are parallel, the diaphragm plane of the front woofer 8 and the rear woofer 9
  • the mutual distance between the diaphragm planes is smaller than the diameter of each of the left and right speaker groups 14, 15 and the pitch may be 25 mm to 50 mm, which is 30 mm in this embodiment.
  • the left speaker group 14 and the right speaker group 15 are identical speaker groups, and are composed of one to four speaker units, all of which are full-range speakers. When composed of multiple speaker units, all speaker units are the same. Each speaker unit has a diameter of 36 mm to 66 mm.
  • the left and right speaker groups 14 and 15 of this embodiment are each composed of a full-range speaker unit having a diameter of 53 mm (2 ⁇ speaker); When only the speaker unit is composed of the speaker group 5, all the speaker units are connected by electro-acoustic in-phase, and may be connected in series or in parallel, or may be connected in series or in parallel.
  • the left speaker 2 and the right speaker 3 are symmetrically mounted on the television 1 respectively, and form a complete whole with the front frame and the rear cover of the television 1.
  • the left speaker 2 and the right speaker 3 should be connected in an electro-acoustic phase, that is, the positive (+) pole of the left speaker 2 is connected to the positive (+) pole of the left (L) channel audio output of the television 1, and the negative (-) pole is connected.
  • Negative (-) pole, the positive (+) pole of the right speaker 3 is connected to the positive (+) pole of the right (R) channel audio output of the television 1, and the negative (-) pole is connected to the negative (-) pole.
  • the mounting directions of the left speaker 2 and the right speaker 3 are the same, and the so-called mounting orientations of the left and right speaker groups 14 and 15 in the left speaker 2 and the right speaker 3 are oriented.
  • the left speaker 2 and the right speaker 3 can be installed in the lower part of the television 1. At this time, the orientation of the left speaker 2 and the right speaker 3 can be downward or forward or backward; the left speaker 2 and the right speaker 3 can be installed. In the upper part of the television 1, at this time, the orientation of the left speaker 2 and the right speaker 3 can be upward, forward or backward; the left speaker 2 and the right speaker 3 can also be installed in the left middle or right middle of the television 1, and the left speaker 2 and the right speaker 3 can be oriented toward the front, the rear or the left and right.
  • the left speaker 2 and the right speaker 3 of the present embodiment are installed at the lower portion of the television 1, and the speaker is oriented such that the left speaker 2 and the right speaker 3 are all facing downward.
  • the front box wall 6 of the front bass radiator 8 is partially recessed toward the inside of the box 4 to form a front inner box wall 10, and the left and right sides of the front inner box wall 10 are a left front box wall 18 and a right front box wall 19, respectively.
  • the box wall 18 and the right front box wall 19 are symmetrically disposed in the center line in the width direction of the box body 4.
  • the left speaker group 14 and the right speaker group 15 are symmetrically disposed, and are respectively mounted on the left front box wall 18 and the right front side on the left and right sides of the front inner box wall 10.
  • the left front box wall 18 and the right front box wall 19 are parallel to the front inner box wall 10 or are respectively inclined to the front inner box wall 10, and the left front box wall 18 and the right front box wall 19 of the present embodiment are coplanar and parallel to the front inner box wall 10. And parallel to the rear box wall 7 of the box 4, that is, the horizontal section of the speaker is "concave".
  • the left front box wall 18 and the right front box wall 19 have the same shape and are symmetrically disposed on the left and right sides of the front inner box wall 10, and the left and right speaker groups 14, 15 are equal in height at the left and right front box walls 18, 19;
  • the tank wall 10 is located at an intermediate position of the entire front tank wall 6, and accordingly, the rear bass radiator 9 is installed at an intermediate position of the entire rear tank wall 7.
  • the front and rear woofer radiators 8, 9 are relatively symmetrically mounted, the diaphragm plane of the front woofer 8 and the diaphragm plane of the rear woofer 9 are parallel, the diaphragm plane of the front woofer 8 and the rear woofer 9
  • the mutual distance between the diaphragm planes is smaller than the diameter of each of the left and right speaker groups 14, 15 and the pitch may be 25 mm to 50 mm, which is 30 mm in this embodiment.
  • the rear box wall 7 of the bass radiator 9 is partially recessed toward the inside of the box 4 to form a rear inner box wall 12, and the left and right sides of the rear inner box wall 12 are the rear outer box wall 22 (in the fourth and fifth embodiments)
  • the rear inner tank wall is coplanar with the rear outer tank wall, that is, the rear tank wall 7).
  • the rear outer casing wall 22 on both sides of the rear inner casing wall 12 is coplanar and parallel with the rear inner casing wall 12 or the rear outer casing wall 22 on both sides of the rear inner casing wall 12 is symmetrically disposed in the center line of the width direction of the casing 4. And inclined to the rear inner box wall 12; the rear outer box wall 22 on both sides of the embodiment is coplanar, parallel to the rear inner box wall 12, and parallel to the front inner box wall 10, the left front box wall 18, and the right front box wall 19 .
  • the left inner rear box wall 20 is between the left side of the rear inner box wall 12 and the rear outer box wall 22 of the left side, and the right inner side and the rear right outer box wall 22 of the rear inner box wall 12 are right inner and rear.
  • the box wall 21; the rear inner box wall 12 corresponds in parallel with the front inner box wall 10, and has the same shape and shape; the rear outer box wall 22 on the left side of the rear inner box wall 12 corresponds to the left front box wall 18, and the rear inner box wall 12 is right.
  • the rear rear outer casing wall 22 corresponds to the right front tank wall 19.
  • the left speaker 2 and the right speaker 3 which are symmetric on the left and right sides of the television 1 of the present invention may also have a speaker group 5 in one side speaker and a left speaker group 14 and a right speaker group 15 in the other side speaker.
  • the working principle of the invention is:
  • the L (left) channel of the audio power output it produces is applied to the left speaker 2, while the R (right) channel sound is applied to the right speaker 3; at this time, the speaker group 5, or the left speaker group 14 and the diaphragm of the right speaker group 15 vibrate to realize electro-acoustic conversion and generate sound.
  • the low-frequency sound airflow in the sound wave drives the front bass radiator 8 and the rear bass radiator 9 to vibrate, and the two bass radiators vibrate in opposite directions with the same amplitude, that is, they simultaneously perform the same amplitude vibration outward or simultaneously inward, resulting in vibration. Resonance.
  • the resonance also greatly enhances the low-frequency sound waves, so that the double effect greatly enhances the bass effect, while the speaker group
  • the size of the speaker is very small (about 2 )); the diaphragm is light in weight, the voice coil is small in weight, the IF sound is good in the medium frequency, and the speaker is all the diaphragm facing the atmospheric space, so that the medium frequency high frequency sound wave is directly radiated to the ambient atmosphere.
  • the television with built-in double film resonance speaker adopts double speakers, each speaker is made of small-caliber full-range speaker, and two identical bass radiators are symmetrically installed, driven by the audio power outputted by the television, two The speaker group of the speaker realizes the electroacoustic conversion to generate sound, the medium and high frequency sound waves directly radiate into the space, and the low frequency sound air flow drives the two passive low frequency radiators to symmetrical vibration, generating strong low frequency sound wave radiation to the atmospheric space; the cost is not high, but Through the double-film passive resonance, the bass effect is greatly improved, and the television set made by the small-caliber speaker can also emit a shocking sound, successfully solving the problem of poor sound quality of the flat-panel television.

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Abstract

本发明属于电视机领域，具体地说是一种内置双膜共振音箱的电视机，电视机内的左右两侧对称设有相互独立的音箱，音箱包括箱体及分别位于箱体内的扬声器组、前低音辐射器、后低音辐射器，前低音辐射器安装在箱体的前箱壁上，在前低音辐射器的一侧或左右两侧设有安装在前箱壁上的扬声器组，后低音辐射器安装在与前箱壁相对的箱体的后箱壁上，且后低音辐射器与前低音辐射器相对应。本发明通过双膜对称共振，成倍地增加了低音振膜面积，并通过共振，使低音效果得到极大增强，达到全音频频域的完美重放，成功地解决了平板电视机越做越薄，声音效果越来越差的老大难问题，使平板电视成为图像好，声音也好的双好电视。

Description

一种内置双膜共振音箱的电视机 技术领域
本发明属于电视机领域，具体地说是一种内置双膜共振音箱的电视机。
背景技术
众所周知，电视机技术、尤其是平板电视机技术发展迅速，人们对电视机的要求越来越高；而电视机的质量最重要的是两个，一个是图像好，一个是声音好。当前的平板电视机越做越薄，图像越来越好，但声音随着越做越薄就越来越差，这是由于电视机做薄以后，扬声器及音箱的尺寸受到限制，只能使用较小的喇叭和小音箱，造成低音音质很差。在福建科学技术出版社于2008年7月出版的《扬声器与音箱设计手册》中，公开了密闭式音箱(60～67页)、开口式音箱(67～77页)、无源辐射音箱(77～78页)。这些公开的现有技术用在平板电视机时，由于平板电视薄、扬声器尺寸比较小，用上述现有技术的电视机音质就较差，尤其是低音，几乎就重放不出来。而将扬声器尺寸加大，音箱加大虽可以满足声音要求；但又很难将大尺寸扬声器和大尺寸音箱装到平板电视机上，这就成为了当前平板电视机的一个老大难问题。
发明内容
为了解决现有电视机音质差的问题，本发明的目的在于提供一种内置双膜共振音箱的电视机。该电视机装置了左右对称的两个相同音箱，在每个音箱中有两个相互对称的低音辐射器和相应的扬声器组，这样就能用小尺寸扬声器(如直径53mm扬声器)制造出体积很小、重量很轻的音箱，这样音箱不但能很方便地安装在平板电视机上，还能发出浑厚震撼的低音和响亮清晰的中音和高音，从而达到平板电视机图像好、声音也好的目的。
本发明的目的是通过以下技术方案来实现的：
本发明电视机内的左右两侧对称设有相互独立的音箱，该音箱包括箱体及分别位于所述箱体内的扬声器组、前低音辐射器、后低音辐射器，其中前低音辐射器安装在所述箱体的前箱壁上，在所述前低音辐射器的一侧或左右两侧设有安装在所述前箱壁上的扬声器组，所述后低音辐射器安装在与所述前箱壁相对的箱体的后箱壁上，且所述后低音辐射器与所述前低音辐射器相对应。
其中：所述前低音辐射器位于前箱壁的一侧，在该前低音辐射器的一侧设有安装在所述前箱壁另一侧的扬声器组；所述扬声器组的振膜朝向箱体外设置，所述前箱壁与安装所述后低音辐射器的后箱壁相平行；
所述前低音辐射器位于前箱壁的一侧，在该前低音辐射器的一侧设有安装在所述前箱壁另一侧的扬声器组；所述前箱壁安装前低音辐射器部分向箱体内部凹 陷，形成前内箱壁，该前内箱壁与所述前箱壁之间为前侧箱壁；所述扬声器组的振膜朝向箱体外设置，所述前低音辐射器所在的前内箱壁平行或倾斜于所述扬声器组所在的前箱壁；所述后箱壁平行于前内箱壁；所述安装所述后低音辐射器的后箱壁部分向箱体内部凹陷，形成后内箱壁，该后内箱壁与所述后箱壁之间为后侧箱壁；所述扬声器组的振膜朝向箱体外设置，所述前低音辐射器所在的前内箱壁与后低音辐射器所在的后内箱壁相平行，且前内箱壁与后内箱壁相对应、形状尺寸均相同；所述前内箱壁平行或倾斜于所述扬声器组所在的前箱壁，所述后内箱壁平行或倾斜于所述后箱壁；
所述前低音辐射器安装在前箱壁的中间位置，在该前低音辐射器的左右两侧对称设有扬声器组，即左扬声器组及右扬声器组；所述左扬声器组及右扬声器组的振膜均朝向箱体外设置，所述前箱壁与安装所述后低音辐射器的后箱壁相平行；
所述前低音辐射器安装在前箱壁的中间位置，在该前低音辐射器的左右两侧对称设有扬声器组，即左扬声器组及右扬声器组；安装所述前低音辐射器的前箱壁部分向箱体内部凹陷，形成前内箱壁，所述左扬声器组与右扬声器组分别安装在该前内箱壁左右两侧的左前箱壁及右前箱壁上，所述前内箱壁的左侧与左前箱壁之间为左内侧箱壁，前内箱壁的右侧与右前箱壁之间为右内侧箱壁；所述左前箱壁与右前箱壁的形状尺寸相同、以箱体宽度方向中心线对称设置，并与所述前内箱壁平行或分别倾斜于所述前内箱壁；所述后低音辐射器位于整个后箱壁的中间位置，该后箱壁平行于前内箱壁，所述左前箱壁与右前箱壁平行或分别倾斜于所述后箱壁；所述音箱的水平截面为“凹”形；安装所述后低音辐射器的后箱壁部分向箱体内部凹陷，形成后内箱壁，该后内箱壁的左右两侧为后外箱壁；所述后内箱壁的左侧与左侧的后外箱壁之间为左内后箱壁，后内箱壁的右侧与右侧的后外箱壁之间为右内后箱壁；所述后内箱壁两侧的后外箱壁以箱体宽度方向中心线对称设置，并与所述后内箱壁平行或倾斜于所述后内箱壁；所述后内箱壁与前内箱壁平行对应，且形状尺寸相同；所述后内箱壁左侧的后外箱壁与左前箱壁相对应，所述后内箱壁右侧的后外箱壁与右前箱壁相对应；
所述电视机左右两侧的音箱均为电声同相连接，位于所述电视机左侧的音箱接电视机的左声道，位于所述电视机右侧的音箱接电视机的右声道；所述前低音辐射器与后低音辐射器为完全相同的低音辐射器，且前低音辐射器与后低音辐射器对称安装，所述前低音辐射器的振膜平面与后低音辐射器的振膜平面相平行，该前低音辐射器的振膜平面与后低音辐射器的振膜平面之间的距离小于扬声器组内的每个单个扬声器单元的直径；所述扬声器组中的每个扬声器单元全部振膜箱体外安装，所述扬声器组中的扬声器单元为多个时，全部为电声同相连接。
本发明的优点与积极效果为：
1.本发明采用了左右对称的两个音箱，在每个音箱中有两个相互对称的低 音辐射器和相应的扬声器组，这样就能用小尺寸扬声器制造出体积很小、重量很轻的音箱，它可以和平板电视机匹配，不但很方便地安装在平板电视机上，还能发出浑厚震撼的低音和响亮清晰的中音和高音，从而达到平板电视机图像好、声音也好的目的。
2.本发明电视机的音箱采用了双膜(前后低音辐射器)被动共振，在成倍增大了低音振膜面积的同时，产生声气流共振，这双重作用使低音放音效果得到革命性增强，用小尺寸扬声器(例如2吋)就能发出大尺寸扬声器(如5吋～6.5吋)和相应大尺寸音箱的低频声音。
3.本发明电视机的音箱的扬声器单元(如2吋)振膜音圈尺寸都很小，质量很轻，且振膜向外安装，使音频中的中频和高频声波直接辐射到大气空间，能得到优质的中频和高频播放质量。
4.本发明电视机的音箱物理声学设计科学、合理、简单，便于制造，成本低，非常实用。
5.本发明成功地解决了平板电视越做越薄，音质越做越差的问题。
附图说明
图1为本发明的结构主视图；
图2为图1的仰视图；
图3为本发明的立体结构示意图；
图4A为本发明实施例一中双膜共振音箱的结构主视图；
图4B为图4A的俯视剖视图；
图5A为本发明实施例二中双膜共振音箱的结构主视图；
图5B为图5A的俯视剖视图；
图6A为本发明实施例三中双膜共振音箱的结构主视图；
图6B为图6A的俯视剖视图；
图7A为本发明实施例四中双膜共振音箱的结构主视图；
图7B为图7A的俯视剖视图；
图8A为本发明实施例五中双膜共振音箱的结构主视图；
图8B为图8A的俯视剖视图；
图9A为本发明实施例六中双膜共振音箱的结构主视图；
图9B为图9A的俯视剖视图；
其中：1为电视机，2为左音箱，3为右音箱，4为箱体，5为扬声器组，6为前箱壁，7为后箱壁，8为前低音辐射器，9为后低音辐射器，10为前内箱壁，11为前侧箱壁，12为后内箱壁，13为后侧箱壁，14为左扬声器组，15为右扬声器组，16为左内侧箱壁，17为右内侧箱壁，18为左前箱壁，19为右前箱壁，20为左内后箱壁，21为右内后箱壁，22为后外箱壁。
具体实施方式
下面结合附图对本发明作进一步详述。
本发明的电视机1可为现有技术的平板电视机，如图1～3所示，电视机1内的左右两侧对称设有相互独立的音箱，即左音箱2及右音箱3，每个音箱均包括箱体4及分别位于箱体4内的扬声器组、前低音辐射器8、后低音辐射器9，其中箱体4是一个单腔体的密封箱体，前低音辐射器8安装在箱体4的前箱壁6上，在前低音辐射器8的一侧或左右两侧设有安装在前箱壁6上的扬声器组，后低音辐射器9安装在与前箱壁6相对的箱体4的后箱壁7上，且后低音辐射器9与前低音辐射器8相对应。
实施例一
如图4A、图4B所示，本实施例的左音箱2和右音箱3是两只相同的音箱，先制作这两只音箱。在箱体4内，安装有扬声器组5、前低音辐射器8、后低音辐射器9，其中箱体4为密闭的壳体，可以用开模注塑的方法制造，也可以用其它材料如金属材料(例如铝、铁)、木材或塑料等加工制造；本实施例的箱体4采用开模注塑方法制造。先设计外观，然后按外观设计好箱体进行开模，再用注塑机制造；本实施例的箱体4的外尺寸为：130mm(长)×36mm(宽)×59mm(高)。
箱体4具有前箱壁6、后箱壁7及左、右箱壁和上、下箱壁，前低音辐射器8安装在前箱壁6的一侧，在该前低音辐射器8的一侧设有安装在前箱壁6另一侧的扬声器组5，该扬声器组5中的每个扬声器单元振膜向外安装。后低音辐射器9安装在后箱壁7上，前、后箱壁6、7相互平行，前低音辐射器8与后低音辐射器9等高、且对称安装。前低音辐射器8与后低音辐射器9是完全相同的低音辐射器，即前、后低音辐射器8、9制造材料，尺寸和形状等均相同；所谓低音辐射器又叫空喇叭，其只有振膜，简称膜，任一低音辐射器的振膜面积等于或大于扬声器组5中的所有扬声器单元振膜面积之和；本实施例每个低音辐射器的振膜面积为3500mm2。前低音辐射器8和后低音辐射器9形状可以是椭圆形的，也可以是圆形的或方形的；结构上可以是平板的，也可以是锥形的；本实施例用的是椭圆形平板式低音辐射器，安装时要注意低音辐射器与箱体4之间的密封。
前低音辐射器8与后低音辐射器9相对对称安装，前低音辐射器8的振膜平面和后低音辐射器9的振膜平面相平行，前低音辐射器8的振膜平面和后低音辐射器9的振膜平面之间相互距离小于扬声器组5中的每个单个扬声器单元的直径，间距可为25mm～50mm，本实施例为30mm。
扬声器组5由一～四只扬声器单元组成，这些扬声器单元均为全频式扬声器，当由多只扬声器单元组成时，所有扬声器单元都是相同的扬声器；每个扬声器单元尺寸为直径36mm～66mm，本实施例的扬声器组5由一只全频扬声器单元组成，其尺寸为直径53mm(2吋扬声器)；当由多只扬声器单元组成扬声器组5时，所有的扬声器单元均采用电声同相连接，可以串联，也可以并联，还可以串 并联。
将相同的左、右音箱2、3制作完成后，将左音箱2和右音箱3分别对称地安装在电视机1上，并和电视机1的前框及后盖形成一个完整的整体。左音箱2和右音箱3要采用电声同相连接，即左音箱2的正(+)极接电视机1的左(L)声道音频输出的正(+)极，负(-)极接负(-)极，右音箱3的正(+)极接电视机1的右(R)声道音频输出的正(+)极，负(-)极接负(-)极。
左音箱2和右音箱3的安装朝向相同，所谓安装朝向即左音箱2和右音箱3的扬声器组5的振膜朝向。
左音箱2和右音箱3可以安装在电视机1的下部，这时，左音箱2和右音箱3的朝向可以是向下，也可以向前或向后；左音箱2和右音箱3可以安装在电视机1的上部，这时，左音箱2和右音箱3的朝向可以向上、向前或向后；左音箱2和右音箱3还可以安装在电视机1的左侧中部或右侧中部，这时左音箱2和右音箱3的朝向可以朝前方、后方或左右侧向。本实施例的左音箱2和右音箱3安装在电视机1的下部，音箱朝向为左音箱2和右音箱3全部朝下；这时还要注意，左、右音箱2、3要对称安装，即左音箱2的扬声器组5端在电视机1的左外侧，右音箱3的扬声器组5端在电视机1的右外侧。
实施例二
如图5A、图5B所示，本实施例与实施例一的区别在于：
前箱壁6安装前低音辐射器8部分向箱体4内部凹陷，形成前内箱壁10，该前内箱壁10与前箱壁6之间为前侧箱壁11。扬声器组5的振膜朝向箱体4外设置，前低音辐射器8所在的前内箱壁10平行或倾斜于扬声器组5所在的前箱壁6(本实施例的前内箱壁10与前箱壁6平行)，后箱壁7平行于前内箱壁10。本实施例的前侧箱壁11与左、右箱壁相平行，并垂直于前箱壁6、后箱壁7及前内箱壁10。
实施例三
如图6A、图6B所示，本实施例与实施例二的区别在于：
安装后低音辐射器9的后箱壁7部分向箱体4内部凹陷，形成后内箱壁12，该后内箱壁12与后箱壁7之间为后侧箱壁13。扬声器组5的振膜朝向箱体4外设置，前低音辐射器8所在的前内箱壁10与后低音辐射器9所在的后内箱壁12相平行，且前内箱壁10与后内箱壁12相对应、形状尺寸均相同；前内箱壁10平行或倾斜于扬声器组5所在的前箱壁6(本实施例的前内箱壁10与前箱壁6平行)，后内箱壁12平行或倾斜于后箱壁7(本实施例的后内箱壁12与后箱壁7平行)。本实施例的前箱壁6与后箱壁7平行，前侧箱壁11与后侧箱壁13共面，并与左、右箱壁相平行，且垂直于前箱壁6、后箱壁7、前内箱壁10及后内箱壁12。
实施例四
本实施例左、右音箱2、3的箱体4内分别安装了两个扬声器组，即左扬声器组14和右扬声器组15，左扬声器组14和右扬声器组15对称安装在前箱壁6的左右两侧，在前箱壁6的中间位置即左、右扬声器组14、15中间安装了前低音辐射器8；后低音辐射器9安装在后箱壁7上，该后箱壁7与前箱壁6相平行，前低音辐射器8与后低音辐射器9等高、且对称安装；前低音辐射器8的振膜平面和后低音辐射器9的振膜平面相平行，前低音辐射器8的振膜平面和后低音辐射器9的振膜平面之间相互距离小于左、右扬声器组14、15中每个单个扬声器单元的直径，间距可为25mm～50mm，本实施例为30mm。左扬声器组14和右扬声器组15的安装平面可以和前低音辐射器8的安装平面共面，也可以左、右扬声器组14、15的安装平面突出于前低音辐射器8的安装平面；本实施例为左、右扬声器组14、15的安装平面与前低音辐射器8的安装平面共面。即：
如图7A、图7B所示，前低音辐射器8及位于其左右两侧的左扬声器组14、右扬声器组15均安装在前箱壁6上，安装后低音辐射器9的后箱壁7与前箱壁6相平行，即音箱的水平截面为长方形。左扬声器组14和右扬声器组15的安装平面形状尺寸相同，对称设置于前低音辐射器8的左右两侧，左、右扬声器组14、15的高度相等。后低音辐射器9安装在整个后箱壁7的中间位置。前、后低音辐射器8、9相对对称安装，前低音辐射器8的振膜平面和后低音辐射器9的振膜平面相平行，前低音辐射器8的振膜平面和后低音辐射器9的振膜平面之间相互距离小于左、右扬声器组14、15中的每个单个扬声器单元的直径，间距可为25mm～50mm，本实施例为30mm。
左扬声器组14及右扬声器组15为完全相同的扬声器组，由一～四只扬声器单元组成，这些扬声器单元均为全频式扬声器，当由多只扬声器单元组成时，所有扬声器单元都是相同的扬声器；每个扬声器单元尺寸为直径36mm～66mm，本实施例的左、右扬声器组14、15均由一只全频扬声器单元组成，其尺寸为直径53mm(2吋扬声器)；当由多只扬声器单元组成扬声器组5时，所有的扬声器单元均采用电声同相连接，可以串联，也可以并联，还可以串并联。
将相同的左、右音箱2、3制作完成后，将左音箱2和右音箱3分别对称地安装在电视机1上，并和电视机1的前框及后盖形成一个完整的整体。左音箱2和右音箱3要采用电声同相连接，即左音箱2的正(+)极接电视机1的左(L)声道音频输出的正(+)极，负(-)极接负(-)极，右音箱3的正(+)极接电视机1的右(R)声道音频输出的正(+)极，负(-)极接负(-)极。
左音箱2和右音箱3的安装朝向相同，所谓安装朝向即左音箱2和右音箱3中的左、右扬声器组14、15的振膜朝向。
左音箱2和右音箱3可以安装在电视机1的下部，这时，左音箱2和右音箱3的朝向可以是向下，也可以向前或向后；左音箱2和右音箱3可以安装在电视机1的上部，这时，左音箱2和右音箱3的朝向可以向上、向前或向后；左音箱 2和右音箱3还可以安装在电视机1的左侧中部或右侧中部，这时左音箱2和右音箱3的朝向可以朝前方、后方或左右侧向。本实施例的左音箱2和右音箱3安装在电视机1的下部，音箱朝向为左音箱2和右音箱3全部朝下。
实施例五
如图8A、图8B所示，本实施例与实施例四的区别在于：
安装前低音辐射器8的前箱壁6部分向箱体4内部凹陷，形成前内箱壁10，该前内箱壁10的左右两侧分别为左前箱壁18及右前箱壁19，该左前箱壁18与右前箱壁19以箱体4宽度方向的中心线对称设置，左扬声器组14与右扬声器组15对称设置、分别安装在前内箱壁10左右两侧的左前箱壁18及右前箱壁19上。前内箱壁10的左侧与左前箱壁18之间为左内箱壁16，右侧与右前箱壁19之间为右内侧箱壁17。左前箱壁18及右前箱壁19与前内箱壁10平行或分别倾斜于前内箱壁10，本实施例的左前箱壁18及右前箱壁19共面，并与前内箱壁10平行，且平行于箱体4的后箱壁7，即音箱的水平截面为“凹”形。左前箱壁18与右前箱壁19的形状尺寸相同，对称设置于前内箱壁10的左右两侧，左、右扬声器组14、15在左、右前箱壁18、19的高度相等；前内箱壁10位于整个前箱壁6的中间位置，相应地，后低音辐射器9安装在整个后箱壁7的中间位置。前、后低音辐射器8、9相对对称安装，前低音辐射器8的振膜平面和后低音辐射器9的振膜平面相平行，前低音辐射器8的振膜平面和后低音辐射器9的振膜平面之间相互距离小于左、右扬声器组14、15中的每个单个扬声器单元的直径，间距可为25mm～50mm，本实施例为30mm。
实施例六
如图9A、图9B所示，本实施例与实施例五的区别在于：
安装后低音辐射器9的后箱壁7部分向箱体4内部凹陷，形成后内箱壁12，该后内箱壁12的左右两侧为后外箱壁22(实施例四、五中的后内箱壁与后外箱壁共面、即为后箱壁7)。
后内箱壁12两侧的后外箱壁22共面，并与后内箱壁12平行或后内箱壁12两侧的后外箱壁22以箱体4的宽度方向中心线对称设置，并分别倾斜于后内箱壁12；本实施例两侧的后外箱壁22共面、平行于后内箱壁12，且平行于前内箱壁10、左前箱壁18、右前箱壁19。后内箱壁12的左侧与左侧的后外箱壁22之间为左内后箱壁20，后内箱壁12的右侧与右侧的后外箱壁22之间为右内后箱壁21；后内箱壁12与前内箱壁10平行对应，且形状尺寸相同；后内箱壁12左侧的后外箱壁22与左前箱壁18相对应，后内箱壁12右侧的后外箱壁22与右前箱壁19相对应。
本发明电视机1左右两侧对称的左音箱2与右音箱3，还可以是一侧的音箱中具有扬声器组5，另一侧的音箱中具有左扬声器组14和右扬声器组15。
本发明的工作原理为：
当电视机1工作时，其产生的音频功率输出的L(左)声道施加于左音箱2，同时R(右)声道音施加于右音箱3；这时扬声器组5，或左扬声器组14和右扬声器组15的振膜振动，实现电声转换，产生声音。声波中的低频声气流就驱动前低音辐射器8和后低音辐射器9振动，且两个低音辐射器振动方向相反，幅度相同，即它们同时向外或同时向内做幅度相同的振动，产生共振。这样，不但成倍增加了振膜面积(扬声器主动振膜+两个被动振膜)，同时共振又使低频声波得到极大增强，这样双重作用的结果就大大增强了低音效果，而扬声器组的扬声器尺寸很小(2吋左右)；这样振膜质量轻，音圈重量小，本身中频高频发声好，且扬声器又全部是振膜面向大气空间，就使中频高频声波直接辐射到环境大气。这样，就不但得到了丰满厚重震撼的低音，又能得到响亮清晰的中音高音，全音频就能得到令人满意的声音播放，这样就革命性地提高了平板电视机的声音播放质量，成功地解决了平板电视机越做越薄，声音越来越差的老大难问题。使平板电视机成为图像好，声音也好的双好电视。
本发明内置双膜共振音箱的电视机，采用了双音箱，每个音箱都用小口径全频扬声器制造，对称安装了两个相同的低音辐射器，在电视机输出的音频功率驱动下，两个音箱的扬声器组实现电声转换产生声音，中高频声波直接辐射到空间，而低频声的气流驱动两个被动低频辐射器对称振动，产生强劲的低频声波辐射至大气空间；成本不高，却通过双膜被动共振，大大提高了低音效果，使小口径扬声器做的电视机，也能发出令人震撼的声音，成功地解决了平板电视机声音音质差的问题。

Claims (14)

  1. 一种内置双膜共振音箱的电视机，其特征在于：所述电视机(1)内的左右两侧对称设有相互独立的音箱，该音箱包括箱体(4)及分别位于所述箱体(4)内的扬声器组、前低音辐射器(8)、后低音辐射器(9)，其中前低音辐射器(8)安装在所述箱体(4)的前箱壁(6)上，在所述前低音辐射器(8)的一侧或左右两侧设有安装在所述前箱壁(6)上的扬声器组，所述后低音辐射器(9)安装在与所述前箱壁(6)相对的箱体(4)的后箱壁(7)上，且所述后低音辐射器(9)与所述前低音辐射器(8)相对应。
  2. 按权利要求1所述内置双膜共振音箱的电视机，其特征在于：所述前低音辐射器(8)位于前箱壁(6)的一侧，在该前低音辐射器(8)的一侧设有安装在所述前箱壁(6)另一侧的扬声器组；所述扬声器组的振膜朝向箱体(4)外设置，所述前箱壁(6)与安装所述后低音辐射器(9)的后箱壁(7)相平行。
  3. 按权利要求1所述内置双膜共振音箱的电视机，其特征在于：所述前低音辐射器(8)位于前箱壁(6)的一侧，在该前低音辐射器(8)的一侧设有安装在所述前箱壁(6)另一侧的扬声器组；所述前箱壁(6)安装前低音辐射器(8)部分向箱体(4)内部凹陷，形成前内箱壁(10)，该前内箱壁(10)与所述前箱壁(6)之间为前侧箱壁(11)。
  4. 按权利要求3所述内置双膜共振音箱的电视机，其特征在于：所述扬声器组的振膜朝向箱体(4)外设置，所述前低音辐射器(8)所在的前内箱壁(10)平行或倾斜于所述扬声器组所在的前箱壁(6)；所述后箱壁(7)平行于前内箱壁(10)。
  5. 按权利要求3所述内置双膜共振音箱的电视机，其特征在于：所述安装所述后低音辐射器(9)的后箱壁(7)部分向箱体(4)内部凹陷，形成后内箱壁(12)，该后内箱壁(12)与所述后箱壁(7)之间为后侧箱壁(13)。
  6. 按权利要求5所述内置双膜共振音箱的电视机，其特征在于：所述扬声器组的振膜朝向箱体外设置，所述前低音辐射器(8)所在的前内箱壁(10)与后低音辐射器(9)所在的后内箱壁(12)相平行，且前内箱壁(10)与后内箱壁(12)相对应、形状尺寸均相同；所述前内箱壁(10)平行或倾斜于所述扬声器组所在的前箱壁(6)，所述后内箱壁(12)平行或倾斜于所述后箱壁(7)。
  7. 按权利要求1所述内置双膜共振音箱的电视机，其特征在于：所述前低音辐射器(8)安装在前箱壁(6)的中间位置，在该前低音辐射器(8)的左右两侧对称设有扬声器组，即左扬声器组(14)及右扬声器组(15)；所述左扬声器组(14)及右扬声器组(15)的振膜均朝向箱体(4)外设置，所述前箱壁(6)与安装所述后低音辐射器(9)的后箱壁(7)相平行。
  8. 按权利要求1所述内置双膜共振音箱的电视机，其特征在于：所述前低音辐射器(8)安装在前箱壁(6)的中间位置，在该前低音辐射器(8)的左右两侧对称设有扬声器组，即左扬声器组(14)及右扬声器组(15)；安装所述前低音辐射器(8)的前箱壁(6)部分向箱体(4)内部凹陷，形成前内箱壁(10)，所述左扬声器组(14)与右扬声器组(15)分别安装在该前内箱壁(10)左右两侧的左前箱壁(18)及右前箱壁(19)上，所述前内箱壁(10)的左侧与左前箱壁(18)之间为左内侧箱壁(16)，前内箱壁(10)的右侧与右前箱壁(19)之间为右内侧箱壁(17)。
  9. 按权利要求8所述内置双膜共振音箱的电视机，其特征在于：所述左前箱壁(18)与右前箱壁(19)的形状尺寸相同、以箱体(4)宽度方向中心线对称设置，并与所述前内箱壁(10)平行或分别倾斜于所述前内箱壁(10)；所述后低音辐射器(9)位于整个后箱壁(7)的中间位置，该后箱壁(7)平行于前内箱壁(10)，所述左前箱壁(18)与右前箱壁(19)平行或分别倾斜于所述后箱壁；所述音箱的水平截面为“凹”形。
  10. 按权利要求8所述内置双膜共振音箱的电视机，其特征在于：安装所述后低音辐射器(9)的后箱壁(7)部分向箱体(4)内部凹陷，形成后内箱壁(12)，该后内箱壁(12)的左右两侧为后外箱壁(22)；所述后内箱壁(12)的左侧与左侧的后外箱壁(22)之间为左内后箱壁(20)，后内箱壁(12)的右侧与右侧的后外箱壁(22)之间为右内后箱壁(21)。
  11. 按权利要求10所述内置双膜共振音箱的电视机，其特征在于：所述后内箱壁(12)两侧的后外箱壁(22)以箱体(4)宽度方向中心线对称设置，并与所述后内箱壁(12)平行或倾斜于所述后内箱壁(12)；所述后内箱壁(12)与前内箱壁(10)平行对应，且形状尺寸相同；所述后内箱壁(12)左侧的后外箱壁(22)与左前箱壁(18)相对应，所述后内箱壁(12)右侧的后外箱壁(22)与右前箱壁(19)相对应。
  12. 按权利要求1至11任一权利要求所述内置双膜共振音箱的电视机，其特征在于：所述电视机(1)左右两侧的音箱均为电声同相连接，位于所述电视机(1)左侧的音箱接电视机(1)的左声道，位于所述电视机(1)右侧的音箱接电视机(1)的右声道。
  13. 按权利要求1至11任一权利要求所述内置双膜共振音箱的电视机，其特征在于：所述前低音辐射器(8)与后低音辐射器(9)为完全相同的低音辐射器，且前低音辐射器(8)与后低音辐射器(9)对称安装，所述前低音辐射器(8)的振膜平面与后低音辐射器(9)的振膜平面相平行，该前低音辐射器(8)的振膜平面与后低音辐射器(9)的振膜平面之间的距离小于扬声器组内的每个单个扬声器单元的直径。
  14. 按权利要求1至11任一权利要求所述内置双膜共振音箱的电视机，其 特征在于：所述扬声器组中的每个扬声器单元全部振膜箱体(4)外安装，所述扬声器组中的扬声器单元为多个时，全部为电声同相连接。
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