CN1124069C - Dome loudspeaker system structure fro video appliance - Google Patents

Abstract

A loudspeaker system structure mounted in a video appliance comprising a front enclosure and rear enclosure is disclosed. A sealing member, such as non-woven fabric, sponge, or the like, is provided to engaging portions of the front enclosure and the rear enclosure to prevent leakage of sounds and vibration. The structure further comprises sound outlets formed on the front enclosure for discharging sound reproduced from a woofer, and high-frequency sound outlets for discharging high-frequency sounds reproduced from the tweeter.

Description

Arched speaker system for video equipment

technical field

The present invention relates to a structure of an arched speaker system for video equipment, particularly one capable of preventing a shadow mask of a cathode ray tube from being vibrated by an arched speaker system attached to a supporting device and improving the quality of sound played from an arched speaker system The structure of an arched speaker system.

Background technique

As seen in Fig. 1, existing video equipment in which speakers are installed includes a box body 1, a speaker case 2 for protecting and supporting the speakers, a cathode ray tube 3 engaged to the box body 1 by threads, and a casing for protecting the speakers by threads. Engage the back cover 4 of the CRT3 into the case 1.

The case 1 includes a plurality of bosses 1a protruding from its inner surface for engaging the case 1 to the CRT 3 by threads, a frame 1b in contact with the front surface of the CRT 3, and a plurality of bosses 1a located close to the CRT engaging bosses 1a. And likewise project from its inner surface a boss 1c for engaging the speaker system 2 by threads. The speaker system 2 includes screw holes 2b on its upper and lower sides, which are aligned with speaker system screw engagement bosses 1c protruding from the inner surface of the cabinet 1 .

With the arrangement as described above, the worker places the CRT 3 on the frame 1b formed on the inner side of the cabinet 1 in order to install the speaker into the video equipment. Then, the flange 3a formed on the front outer part of the CRT3 is positioned opposite to the CRT engaging boss 1a protruding from the inside of the case body 1, and the flange 3a is screwed into the boss 1a by the screw 7, so that the CRT3 is connected to the case Body 1. And the speaker system 2 combined with the speaker 2 a is fixed to the cabinet 1 .

Since the speaker system 2 has protrusions formed with screw holes 2b on its upper and lower sides, the speaker system engaging bosses 1c protruding from the inside of the box body 1 are aligned with the protrusions protruding from the upper and lower sides of the speaker system 2. After the screw holes 2b are aligned, the speaker 2 is fixed to the box body 1 by the screw 5 . A rear cover 4 is combined to the case 1 to protect the CRT 3 and the speaker system 2 .

However, when the existing video equipment equipped with speakers is operated, the speaker 2 a connected to the speaker system 2 plays sound, accompanied by vibration of the speaker system 2 . The generated sound vibration is transmitted to the speaker system engaging boss 1c protruding from the inner side of the box body 1 through the screw 5, and then the vibration is transmitted to the whole box body 1.

The sound vibration transmitted to the box body 1 is then transmitted to the flange 3a of the CRT through the CRT engaging boss 1a, and then transmitted to the CRT3 through the frame 1b formed on the inner side of the box body 1, so that the shadow mask located in the CRT3 vibrates and causes howling Phenomenon. In addition, the quality of the sound produced from the speaker 2a installed inside the speaker system 2 is degraded by the sound vibration as described above.

Contents of the invention

In order to solve the above-mentioned problems, an object of the present invention is to provide a structure of an arched speaker system installed inside a video device, which can prevent the sound vibration generated by the arched speaker system from being transmitted to the CRT and cause the shadow mask of the CRT to vibrate. howling phenomenon.

Another object of the present invention is to provide a structure of an arch speaker system of a video equipment capable of further improving the quality of sound generated from the arch speaker system.

To achieve the above object, according to an aspect of the present invention, a structure of a speaker system is provided, which is installed in video equipment and includes: a tweeter; a woofer; A front shell and a rear shell of a speaker and a tweeter, the structure of the speaker system includes: a rear sound outlet formed on both sides of the front shell for releasing a backward sound played from the woofer; The inner side of the rearward sound outlet is used to emit the low-frequency sound forward outlet of the low-frequency sound played from the woofer; the inner side of the low-frequency forward outlet is used to emit the high-frequency sound played from the tweeter. a high-frequency sound forward outlet; and a sound gathering part for gathering forward sound and backward sound played from the woofer, the front outside of the sound gathering part is provided with a plurality of sound compensating parts, each sound compensating part having Multiple spaced holes to compensate for the quality of the low frequencies played from the woofer.

When the front case and the rear case are tightly engaged with each other, a sealing member such as non-woven fabric, sponge, or the like is placed at the engaging portion of the front case and the rear case to prevent leakage of sound and vibration.

The front case formed with the rearward sound outlet, and the low and high frequency sound forward outlets includes reinforcing bosses for preventing sound vibration from deforming the front case and for maintaining structural strength.

According to still another aspect of the present invention, the structure of the loudspeaker system also includes a guide plate for guiding the sound emitted through the rear sound outlet and the low and high frequency sound forward outlet, and for guiding the sound from the high frequency sound forward outlet. Auxiliary guide plate that guides part of the emitted high-frequency sound.

The deflectors for directing the sound emitted through the rear facing sound outlets and the low and high frequency sound forward outlets are positioned at an angle of 10° to 40° to the centerline of the speaker system to limit the sound from traveling toward the cathode ray tube.

A structure of a speaker system according to still another aspect of the present invention, wherein the sound compensating portion includes first, second and third timbre compensating portions, each of which includes a plurality of spaced apart holes having the same size to compensate From the quality of the sound played from the woofer, the first fret compensating portion is formed in such a manner that these holes are formed in a ratio of 10% to 30% of the inner surface area of the sound gathering portion, and the second fret compensating portion is formed by occupying the inner surface area of the sound gathering portion. The holes are formed in a ratio of 10% to 20% of the surface area, and the third fret compensating portion is formed in such a way that the holes are formed in a ratio of 5% to 25% of the inner surface area of the sound gathering portion.

The first, second and third fret compensating portions are formed in the shape of an ellipse, a circle or a rectangle.

According to another aspect of the speaker system structure, it also includes a plurality of woofer fixing bosses for combining the woofer to the rear of the front shell, wherein the height of one side of the boss is higher than that of the other side thereof, and the woofer is in the form of An angled setting to the front shell. The inclination angle of the woofer to the center line of the speaker system is preferably in the range of 2 degrees to 15 degrees.

According to the present invention, the loudspeaker system structure further includes a plurality of tweeter fixing bosses for combining the tweeter to the front shell, wherein the height of one side of the boss is lower than the height of the other side thereof, and the tweeter is arranged at an angle to the front shell. The inclination angle between the tweeter and the center line of the speaker system is preferably in the range of 5 degrees to 30 degrees.

The structure of a speaker system according to still another aspect of the present invention, wherein the tweeter and the woofer are mounted to the front cabinet and arranged in a staggered manner with respect to a center line of the speaker system. On either side of the rear-facing sound outlet there are lead entries for pulling out the tweeter and woofer leads.

The structure of the loudspeaker system according to another aspect of the present invention also includes a partition wall for preventing the sound-absorbing material from moving, and a raised line for preventing the sound vibration from deforming the rear case, the partition wall and the raised line are formed inside the rear case for maintain its structural strength.

According to still another aspect of the present invention, when the woofer installed to the rear of the front cabinet plays a low-frequency sound, the woofer plays a backward sound, and wherein the noise component of the rear sound is inserted into the woofer installed inside the front cabinet. The rear side of the speaker, the sound-absorbing material absorbing the noise component of the backward sound, emits the good-quality backward sound outward through the guide plate and the outlet.

According to the structure of the loudspeaker system of another aspect of the present invention, wherein the sound gathering part is a triangular shape, formed on the rearward sound outlet and the low/high frequency sound outlet or formed on the low frequency sound outlet, for gathering the The woofer installed to the rear of the front cabinet plays forward sound and rear sound. The inner angle of the sound gathering part is in the range of 20 degrees to 60 degrees.

Description of drawings

The above-mentioned purpose of the present invention, other aspects and advantages will be more clearly understood by referring to the description of preferred embodiments of the present invention with reference to the accompanying drawings, wherein:

1 is a sectional view of an engaged state of a speaker system installed in a video device according to the prior art;

2 is a partial sectional view of the structure of a video equipment and speaker system engaging portion according to a preferred embodiment of the present invention;

3 is a front view of an engaged state of an arch speaker system according to an embodiment of the present invention;

4 is a top view of an engaged state of an arch speaker system according to an embodiment of the present invention;

5 is a front view of the detailed structure of the front shell of the arched speaker system according to the embodiment of the present invention;

6 is a rear view of the detailed structure of the front shell of the arched speaker system according to the embodiment of the present invention;

7 is a rear view of the structure of the front enclosure of the arched speaker system according to an embodiment of the present invention;

8 is a detailed view of the internal structure of the rear shell of the arched speaker system according to an embodiment of the present invention;

Fig. 9 is a cross-sectional view of the structure of the rear shell of the arched speaker system according to the embodiment of the present invention.

Detailed ways

With reference to Fig. 2, be applicable to the video equipment of an embodiment of the present invention and comprise the casing 12 that is used for protecting and supporting cathode ray tube 11, each is connected to the both sides of casing 12 and is used for protecting and supporting the arch speaker of speaker System 13, and a rear cover connected to the rear side of the box body 12 for protecting the CRT 11 and the arched speaker system 13.

In the embodiment shown in FIGS. 5 to 9 , the arched speaker system 13 includes a front shell 15 formed on the front side thereof, and a rear shell 16 tightly engaged to the rear side of the front shell 15 . Between the front case 15 and the rear case 16, a sealing member 37 such as non-woven fabric and sponge is provided to prevent sound leakage and abnormal sound due to structural vibration. In the illustrated embodiment, adhesive is used on both sides of the sealing member.

The arch speaker system according to the present invention also includes a woofer 18 and a tweeter 21 respectively installed inside the front cabinet 15 . In the context of this application, woofer 18 may be any type of speaker capable of producing low frequency sound and tweeter 21 may be any type of speaker capable of producing high frequency sound. The front shell 15 includes a rearward sound outlet 17 (see FIG. 5 ) for outwardly emitting a rearward sound played from a woofer 18, and a forward outlet 19 for emitting a low-frequency sound of a low-frequency sound played from the woofer 18. , and high-frequency sound forward outlets 23 and 23a for emitting high-frequency sound played from the tweeter 21. The front shell 15 also includes a plurality of bosses 20 and 20a for fixing the woofer 18, and a plurality of bosses 22 and 22a for fixing the tweeter.

The front case 15 is provided with a guide plate 24 for guiding the sound emitted from the low and high-frequency sounds to the outlets 19 and 23, and an auxiliary guide for guiding a part of the high-frequency sound emitted from the high-frequency sound to the outlet 23a. plate 25.

In order to concentrate the forward sound and the rearward sound played from the woofer 18, the rear side of the front case 15 is provided with a triangular sound gathering portion 26 having an inner angle of 20° to 60°. In the embodiment shown in FIGS. 3 and 6, a first timbre compensating portion 27 with a plurality of spaced holes is provided on the outer surface of the front side of the sound gathering portion 26 so as to compensate for the sound played from the woofer 18. The quality of the sound, the hole is formed in such a way that the area of the hole is a ratio of 10 to 30% of the inner surface area of the sound gathering portion 26 . As shown in FIG. 5, on the outer surfaces of the low-frequency forward outlet 19 and the high-frequency forward outlet 23a, a second timbre compensating portion 27a is provided with a plurality of spaced holes formed in such a way that the holes The area is a ratio of 10 to 20% of the inner surface area of the sound gathering portion 26 . And on the rear side of the low-frequency forward outlet 19, a third fret compensating portion 27b is provided with a plurality of holes formed in such a way that the area of the holes is a ratio of 5 to 25% of the inner surface area of the sound gathering portion 26. .

In order to pull out the wires of the tweeter 21 and the woofer 18 , there are wire inlets 28 and 28 a on both sides of the rear sound outlet 17 . A plurality of reinforcing ribs 29 are formed on the inner surface of the front case to maintain the structural strength of the front case 15 and prevent the front case 15 from vibrating due to the sound played by the speaker. As shown in FIG. 3, the guide plate 24 for guiding the sound emitted through the rear sound outlet 17 and the low/high frequency front outlets 19 and 23 has a plurality of reinforcing ribs 30 to maintain its strength.

The arched speaker system according to the present invention includes bosses 31 for fixing the arched speaker system 13 on both sides of the box body, threaded holes 32 and 32a for closely connecting the front and rear shells 15 and 16, inserted in the installation At the rear of the woofer 18 inside the front case 15, there is a sound-absorbing material 33 for absorbing the noise component of the backward sound, a portion 34 for supporting or reinforcing the sound-absorbing material 33, and for preventing sound vibration from causing the rear case 16 to deform and The reinforcing rib 35 maintains the structural strength of the rear shell 16 .

2 to 9, in the arch speaker system according to the present invention including the front shell 15 and the rear shell 16 and protecting and supporting the speakers combined to the sides of the cabinet 12, the tweeter 21 for playing high-frequency sound is located Bosses 22 and 22a are formed on the inner side of the front case 15, and they are threadedly engaged with screws. A woofer 18 for playing low-frequency sound is located on bosses 20 and 20a formed inside the front case 15, and they are threadedly engaged with screws.

Since the tweeter fixing bosses 22 and 22a for screwing the tweeter 21 have different heights, the tweeter is installed in the front case 15 at an angle ranging from 5° to 30° to the center line shown in FIG. 2 . And also because the woofer fixing bosses 20 and 20a have different heights, the woofer is installed in the front case 15 at an angle ranging from 2° to 15° to the center line shown in FIG. 2 .

Therefore, the tweeter 21 and the woofer 18 are staggered relative to the center line of the speaker system, and the leads of the tweeter 21 and the woofer 18 are pulled out through the lead holes 28 and 28a formed on the arched speaker system.

After the lead wire of the loudspeaker is pulled out, when the woofer 18 plays low-frequency sound, in order to absorb the bad tone caused by the reflection and the interference of the backward sound produced by the woofer 18, the sound-absorbing material 33 made of compressed soft fiber or textile is embedded. On the supporting partition wall 34 formed inside the rear case 16 .

In addition, after the engagement of the tweeter 21 and the woofer 18 with the front case 15 is completed, the front case 15 is aligned with the rear case 16, and screws are screwed into the holes 32 formed on the front case 15 and the holes formed on the rear case. 32 in.

At this time, the screws tightly connect the front shell 15 and the rear shell 16 to each other. If the sealing member 37 is bonded between the front case 15 and the rear case 16, it is possible to prevent the howling of the front case 15 and the rear case 16 that occurs when the arch speaker system plays sound, and to prevent the sound played from the arch speaker 13. Sound cannot leak out from the junction of the front and rear cases 15 and 16 .

Meanwhile, a first timbre compensating portion 27 is provided on the outer surface of the front side of the sound gathering portion 26, and a second timbre compensating portion 27a is provided on the outer surfaces of the low-frequency forward outlet 19 and the high-frequency forward outlet 23a. , and a third timbre compensating part 27b is provided on the rear side of the low-frequency forward outlet 19. With the configuration described above, the quality of the sound played from the woofer 18 can be substantially compensated, so that high-quality sound can be radiated outward through the arched speaker system.

Particularly, when the low-frequency sound played from the woofer 18 is compensated by the first, second and third compensating parts 27, 27a and 27b and emitted outwardly, the forward sound and the rearward sound played from the woofer 18 are The sound collecting portion 26 formed on the rear side of the front case 15 collects and compensates.

Accordingly, the forward sound and the rearward sound played from the woofer 18 and collected in the sound gathering portion 26 are emitted outward through the low-frequency front outlet 19 .

The end of the front case 15 is provided with a guide plate 24 inclined in the range of 10° to 40°. When the sound is emitted toward the outlet 19 by the low-frequency sound, the guide plate 24 guides the low-frequency sound emitted from the outlet 19 to be released through the speaker grid 36 detachably installed on the casing 12, and prevents the sound from being transmitted to the CRT11. Therefore, the shadow mask inside the CRT 11 is not subjected to vibrations to prevent the howling phenomenon.

Meanwhile, when the highly directional tweeter 21 installed in the front case 15 plays high-frequency sound, the played high-frequency sound is emitted outward through the high-frequency sound forward outlets 23 and 23a.

In addition, when some sound is emitted to the outlet 23 through the high frequency, the guide plate 24 arranged at the end of the front case 15 guides a part of the high frequency sound emitted from the outlet 23 so as to pass through the grill detachably installed on the box body 12. Net 36 is released and prevented from passing to CRT11. Therefore, the shadow mask inside the CRT 11 will not be subjected to vibration so as to prevent the howling phenomenon. The remaining high-frequency sound played from the tweeter 21 is compensated through the outlet 23 a, and is emitted outward through the grill 36 of the auxiliary guide plate 25 formed on the front case 15 .

Especially, when tweeter 21 plays high-frequency sound, by virtue of the guide plate 24 and auxiliary guide plate 25 formed on the front shell 15, the high-frequency sound played by tweeter 21 can be prevented from passing to the shadow mask of CRT11 without changing the sound. quality and is emitted outwards through the speaker grille 36.

As described above, when the sound played from the tweeter 21 and the woofer is emitted outward, by means of the reinforcing rib 29 formed on the outside of the front shell 15 and the reinforcing rib 35 formed on the inside of the rear shell 16, the front and rear shells 15 and 16 can maintain their structural strength against deformation.

With the arched speaker system installed inside the video equipment, the vibration caused by the output sound can be absorbed and cannot be transmitted to the CRT, thus preventing the howling phenomenon. Therefore, video equipment applicable to the present invention can utilize large output amplifiers and speakers, and improve the quality of sound played from the tweeters and woofers within the arch speaker.

Although the present invention has been illustrated and explained herein with reference to preferred embodiments thereof, those skilled in the art will understand that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (18)

1. speaker system, it is installed in the video equipment and comprises: high pitch loudspeaker; Woofer; And tight engagement is to protect and to support fore shell and the back cover that is installed in its inner woofer and high pitch loudspeaker mutually, and described speaker system comprises:

Be formed on described fore shell both sides, be used to emit back back of playing from described woofer to sound to sound outlet;

Be formed on described back inboard, be used to emit all-bottom sound forward direction outlet from the all-bottom sound of described woofer broadcast to sound outlet;

Be formed on the outlet of described low frequency forward direction the inboard, be used to emit the high frequency sound forward direction outlet of the high frequency sound of playing from described high pitch loudspeaker; And

Be used to assemble the forward direction sound of playing from described woofer and the sound concentrating portions of back to sound, the outside, the place ahead of described sound concentrating portions is provided with a plurality of sound compensated part, each sound compensated part has a plurality of holes that separate, with the quality of compensation from the low frequency of described woofer broadcast.

2. speaker system according to claim 1, wherein when fore shell and back cover closely mesh mutually, seal member such as adhesive-bonded fabric, sponge or similar articles is placed on the mate of fore shell and back cover, with leakage and the vibration that prevents sound.

3. speaker system according to claim 1 wherein is formed with the back and comprises to the fore shell of sound outlet and the outlet of low and high-frequency sound forward direction and be used to prevent that acoustical vibration from making the fore shell distortion and being used to keep the reinforcement boss of structural strength.

4. speaker system according to claim 1 also comprises:

Be used to by the back to the guide plate of sound outlet and low and the sound guiding that the outlet of high-frequency sound forward direction is emitted and

Be used to the auxiliary guide plate that exports a part of high-frequency sound guiding of emitting from the high-frequency sound forward direction.

5. speaker system according to claim 4, wherein be used to by the back to be 10 degree to 40 degree angles settings, advance to cathode ray tube with restriction sound to the guide plate of sound outlet and the low sound guiding that outlet is emitted with the high-frequency sound forward direction and the center line of speaker system.

6. speaker system according to claim 1, wherein the sound compensated part comprises first, the second and the 3rd timbre compensated part, each timbre compensated part comprises the sound quality that play from described woofer with compensation in a plurality of holes with same size that separate, the first timbre compensated part forms in the mode that the ratio that accounts for sound concentrating portions inner surface area 10% to 30% forms these holes, the second timbre compensated part forms in the mode that the ratio that accounts for sound concentrating portions inner surface area 10% to 20% forms these holes, and the 3rd timbre compensated part forms in the mode that the ratio that accounts for sound concentrating portions inner surface area 5% to 25% forms these holes.

7. speaker system according to claim 6, wherein first, second forms with oval, circular or rectangular shape with the 3rd timbre compensated part.

8. speaker system according to claim 1 also comprises:

A plurality of woofer fixing lug boss that are used for woofer is attached to the fore shell rear portion, wherein the height of a side boss is higher than the height of opposite side, and this woofer is set to fore shell with an angle.

9. speaker system according to claim 8, the inclination angle of its medium and low spectrum loudspeaker and speaker system center line is spent to the scopes of 15 degree 2.

10. speaker system according to claim 1 also comprises:

A plurality of high pitch loudspeaker fixing lug boss that are used for high pitch loudspeaker is attached to fore shell, wherein the height of a side boss is lower than the height of opposite side, and this high pitch loudspeaker is set to fore shell with an angle.

11. speaker system according to claim 8, the inclination angle of its medium and high pitch loudspeaker and speaker system center line is spent to the scopes of 30 degree 5.

12. speaker system according to claim 1, wherein, described high pitch loudspeaker and woofer are installed to fore shell, and are staggered with respect to the center line of speaker system.

13. speaker system according to claim 12 wherein has the lead-in wire inlet of pulling out high pitch loudspeaker and woofer lead-in wire on the sound outlet both sides in the back.

14. speaker system according to claim 1 also comprises:

Be used to the partition that prevents that sound-absorbing material from moving; With

Be used to prevent that acoustical vibration from making the raised line of back cover distortion, partition and raised line are formed on the inside of back cover, are used to keep its structural strength.

15. speaker system according to claim 1, wherein when the woofer that is installed to the fore shell rear portion is play low-frequency sound, this woofer is play the back to sound, and wherein this back to the noise component(s) of sound be inserted into the woofer that is installed in fore shell inside rear side, be used to absorb the back and absorb to the sound-absorbing material of the noise component(s) of sound, outwards emit the back of good quality by guide plate and outlet to sound.

16. speaker system according to claim 1, wherein, the sound concentrating portions is triangular shaped, be formed on the back on sound outlet and low/high-frequency sound outlet or be formed on the low-frequency sound outlet, be used to assemble the forward direction sound play by the described woofer at the rear portion that is installed to described fore shell and back to sound.

17. speaker system according to claim 16, wherein the interior angle of sound concentrating portions is spent to the scopes of 60 degree 20.

18. speaker system according to claim 1, wherein fore shell and back cover are made by the high density plastic resin, with the timbre of compensation from the low/high-frequency sound of the shell broadcast of loud speaker.

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