CN109982176A - A kind of heat dissipation sound equipment - Google Patents
A kind of heat dissipation sound equipment Download PDFInfo
- Publication number
- CN109982176A CN109982176A CN201910289547.0A CN201910289547A CN109982176A CN 109982176 A CN109982176 A CN 109982176A CN 201910289547 A CN201910289547 A CN 201910289547A CN 109982176 A CN109982176 A CN 109982176A
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- China
- Prior art keywords
- mounting hole
- loudspeaker
- cabinet
- plate rail
- sound equipment
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- 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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The present invention provides a kind of heat dissipation sound equipment, including woofer and cabinet；The front surface of the cabinet offers plate rail mounting hole, and the cabinet rear surface offers the magnetic core mounting hole concentric with the plate rail mounting hole；The loudspeaker plate rail of the woofer is fixed in plate rail mounting hole and seals the plate rail mounting hole；The loudspeaker magnetic core of the woofer is fixed in magnetic core mounting hole and seals the magnetic core mounting hole.It is in communication with the outside by magnetic core mounting hole, it is directly exposed to loudspeaker magnetic core except cabinet, the heat that woofer generates when working is due to concentrating on loudspeaker magnetic core position, it can be dissipated naturally by exposed loudspeaker magnetic core outside the enclosure, it is concentrated in cabinet so as to avoid the heat in traditional sound equipment, cause cabinet to overheat and damage the intracorporal electronic component of case, therefore compared with traditional sound equipment, the service life of product can be extended.
Description
Technical field
The present invention relates to stereo set field more particularly to a kind of heat dissipation sound equipments.
Background technique
Sound equipment is widely applied on an electronic device as public address equipment, and sound equipment generally comprises an active speaker and one
Passive unit (passive radiator).Passive unit is usually similar with active speaker shape, but does not have voice coil and drive magnet.
Its only one cone, get along well any voice coil or circuit are connected.Passive radiator is usually used to adjustment bass, so that designer
Can adjust the tone color of speaker entirety, passive radiator in speaker active speaker to carrying out quilt under the drive of air in cabinet
Dynamic sounding.The structure of active speaker is generally plate rail (frame), voice coil and paper disc is installed in the inner cavity of plate rail, after plate rail
Side is fixedly connected with magnetic core (U glasss of magnetic core).On the apparatus casing that loudspeaker is fixedly installed by plate rail.
In current stereo set, at work, main pyrotoxin is loudspeaker magnetic core to passive loudspeaker box, in order to prevent heat
Accumulate it is excessively high burn loudspeaker or shorten the working life, part speaker can radiate by phase guide tube, and audio and video equipment in order to
Sophistication design is pursued, product internal structure is compact, and space peak use rate is considered when design, is preset to the space of speaker
Very little, so that most speakers do not fill air hose and take airtightness passive type cabinet.Airtightness cabinet is entire active loudspeaking
Device is wrapped in cabinet, causes the heat of loudspeaker magnetic core to concentrate on being not easy to spread out in cabinet, audio and video equipment is made to exist
Heat dissipation index upgrades to the major influence factors of product service life, the usually reality by reducing speaker in speaker in design process
Border uses power to make loudspeaker magnetic core temperature index down to meeting basic product requirements for life, therefore power acoustically is caused to lack
It loses, speaker does not operate at optimal state.Therefore, the prior art is led to the problem of are as follows: sealing structure is taken, loudspeaker
Heat concentrates in cabinet because radiating condition is bad, and overheat causes electronic component impaired and shortens the service life of sound equipment.
Therefore, the existing technology needs to be improved and developed.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, providing a kind of heat dissipation sound equipment, energy
Enough make the loudspeaker magnetic core of fever exposed outside the enclosure, speaker internal heat natural diffuseness is made to go out cabinet, avoids heat concentration
Electronic component is damaged in cabinet, while simplifying structure space.
The technical proposal for solving the technical problem of the invention is as follows:
A kind of heat dissipation sound equipment, including woofer and cabinet；
The front surface of the cabinet offers plate rail mounting hole, and the cabinet rear surface offers concentric with the plate rail mounting hole
Magnetic core mounting hole；
The loudspeaker plate rail of the woofer is fixed in plate rail mounting hole and seals the plate rail mounting hole；
The loudspeaker magnetic core of the woofer is fixed in magnetic core mounting hole and seals the magnetic core mounting hole.
Further, positioning step is offered on the periphery of the plate rail mounting hole, the edge of the loudspeaker plate rail is fixed
It is mounted on positioning step.
Further, the front surface of the loudspeaker plate rail is flushed with the front surface of the cabinet；Or the loudspeaker plate rail
Front surface be lower than the cabinet front surface.
Further, the joining place of the loudspeaker plate rail and the plate rail mounting hole is provided with for glue that is fixed and sealing
Water；The gap location of the loudspeaker magnetic core and the magnetic core mounting hole is provided with for glue that is fixed and sealing.
It further, further include having preceding passive radiator, the front surface of the cabinet offers previous irradiation device mounting hole, described
Preceding passive radiator is fixedly mounted in the previous irradiation device mounting hole and seals the previous irradiation device mounting hole.
It further, further include having rear passive radiator, the rear surface of the cabinet offers rear radiator mounting hole, described
Passive radiator is fixedly mounted in the rear radiator mounting hole and seals the rear radiator mounting hole afterwards.
It further, further include having high pitch loudspeaker, the high pitch loudspeaker is fixed at the upper surface of the cabinet.
Further, the upper surface of the cabinet offers loudspeaker fixing groove, and the high pitch loudspeaker is fixed at institute
It states in loudspeaker fixing groove and the sealing loudspeaker fixing groove, the upper surface of the high pitch loudspeaker is not higher than the cabinet
Upper surface.
Further, installation bayonet is symmetrically arranged in the both side surface of the cabinet.
Further, inlay card has the Shockproof rubber ring fixed after interspersed for screw on the installation bayonet.
Beneficial effect using the above scheme is: a kind of heat dissipation sound equipment proposed by the present invention, by magnetic core mounting hole and outside
Boundary's connection, is directly exposed to loudspeaker magnetic core except cabinet, and the heat that woofer generates when working is raised due to concentrating on
Sound device magnetic core position can be dissipated naturally by exposed loudspeaker magnetic core outside the enclosure, so as to avoid the heat in traditional sound equipment
Amount concentrates in cabinet, causes cabinet to overheat and damage the intracorporal electronic component of case, therefore compared with traditional sound equipment, can extend
The service life of product.Simultaneously using exposed loudspeaker magnetic core have preferable thermal diffusivity, designer when designing sound equipment,
The power of woofer will not be constrained to small-power because of heat dissipation problem, to increase the power model of woofer
It encloses.Traditional sound equipment is compared, the power for increasing woofer can not be limited by heat dissipation.
Detailed description of the invention
Fig. 1 is a kind of forward sight structural schematic diagram of embodiment of present invention heat dissipation sound equipment.
Fig. 2 is a kind of backsight structural representation of embodiment of present invention heat dissipation sound equipment.
Fig. 3 is a kind of explosive view of embodiment of present invention heat dissipation sound equipment.
In figure: 100, woofer；110, loudspeaker plate rail；120, loudspeaker magnetic core；200, cabinet；210, plate rail is pacified
Fill hole；211, positioning step；220, magnetic core mounting hole；230, previous irradiation device mounting hole；240, rear radiator mounting hole；250, it raises
Sound device fixing groove；300, preceding passive radiator；400, rear passive radiator；500, high pitch loudspeaker；600, bayonet is installed；610,
Shockproof rubber ring.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer and more explicit, right as follows in conjunction with drawings and embodiments
The present invention is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and do not have to
It is of the invention in limiting.
Fig. 1 is the positive structure diagram of the embodiment of present invention heat dissipation sound equipment；Fig. 2 is the implementation of present invention heat dissipation sound equipment
The backsight structural representation of example；Fig. 3 is the explosive view of the embodiment of present invention heat dissipation sound equipment.
As shown in Figure 1, a kind of heat dissipation sound equipment, includes woofer 100, woofer 100 is using existing general
The structure of loadspeaker structure, loudspeaker is generally plate rail, voice coil and paper disc is installed in the inner cavity of plate rail, and at plate rail rear
It is fixedly connected with magnetic core.Sound equipment in the embodiment of the present invention further includes having cabinet 200, and the cabinet 200 in the present embodiment is using length
Bar shaped cabinet, but it is not limited to strip cabinet, the shape cabinet of other shapes is applicable in, and is cavity inside cabinet 200.Such as Fig. 3
It is shown, plate rail mounting hole 210 is offered in the front surface of the cabinet 200, offers magnetic core peace in 200 rear surface of cabinet
Hole 220 is filled, magnetic core mounting hole 220 is arranged concentrically with the plate rail mounting hole 210.The loudspeaker plate rail 110 of woofer 100
It is fixed in plate rail mounting hole 210 and is sealed the plate rail mounting hole 210, glue sealing is used in the present embodiment, that is, exists
The joining place of the loudspeaker plate rail 110 and the plate rail mounting hole 210 applies glue and (is not drawn into diagram), solid by glue
Determine loudspeaker plate rail 110 and sealing plate rail mounting hole 210.Sealing strip sealing also can be used in addition to using glue sealing, that is, raising
Sealing strip is arranged in the joining place of sound device plate rail 110 and the plate rail mounting hole 210, then loudspeaker plate rail 110 is consolidated by screw
It is scheduled on cabinet 200, so that loudspeaker plate rail 110 be made to compress sealing strip.
As shown in Figure 2 and Figure 3, the loudspeaker magnetic core 120 of woofer 100 be fixed in magnetic core mounting hole 220 and
The magnetic core mounting hole 220 is sealed, glue sealing is used in the present embodiment, i.e., in the loudspeaker magnetic core 120 and the magnetic core
The gap location of mounting hole 220 applies glue, and passes through the fixed loudspeaker plate rail 110 of glue and sealing plate rail mounting hole 210.Using glue
Water can be fixedly secured part, and compared with other connection types, structure is simpler, optimizes the structure of entire sound equipment, glue
Plasticity fills up the linking gap of each mounting hole, to guarantee that speaker is air tight and avoids influencing sound quality.
It is in communication with the outside by magnetic core mounting hole 220, is directly exposed to loudspeaker magnetic core 120 except cabinet 200, bass
The heat that loudspeaker 100 generates when working can pass through exposed loudspeaker magnetic core due to concentrating on 120 position of loudspeaker magnetic core
120 are dissipated in naturally outside cabinet 200, concentrate in cabinet 200 so as to avoid the heat in traditional sound equipment, lead to cabinet 200
It overheats and damages the electronic component in cabinet 200, therefore compared with traditional sound equipment, the service life of product can be extended.Simultaneously
Using exposed loudspeaker magnetic core 120 have preferable thermal diffusivity, designer when designing sound equipment, woofer 100
Power will not be constrained to small-power because of heat dissipation problem, to increase the power bracket of woofer 100.Comparison tradition
Sound equipment, increase woofer 100 power can not be limited by heat dissipation.
Positioning step 211, the loudspeaker plate rail 110 are offered on the periphery of plate rail mounting hole 210 in the present embodiment
Edge be fixedly mounted on positioning step 211.Positioning step 211 carries out installation positioning, positioning step to loudspeaker plate rail 110
211 cavity shape is adapted with the shape of loudspeaker plate rail 110, the edge of loudspeaker plate rail 110 can inlay card in positioning step
In 211 inner cavity, while the step surface of positioning step 211 and loudspeaker plate rail 110 realize limit by flat, to make loudspeaking
Device plate rail 110 is located in plate rail mounting hole 210, is sealed fixation by glue, keeps assembly easier, therefore improves assembly
Efficiency.The front surface of the loudspeaker plate rail 110 is flushed with the front surface of the cabinet 200 or the loudspeaker plate rail 110
Front surface is lower than the front surface of the cabinet 200；The front surface of general loudspeaker plate rail 110 is entire woofer 100
Front surface, when loudspeaker plate rail 110 front surface be equal to or less than cabinet 200 front surface, make in entire woofer 100
The front surface for sinking into cabinet 200 makes design have more aesthetic feeling, and the front surface of loudspeaker plate rail 110 is avoided to protrude the preceding table of cabinet 200
Face and cause the thickness of entire acoustic structure to increase.
Heat dissipation sound equipment in the present embodiment further includes having preceding passive radiator 300, is opened up in the front surface of the cabinet 200
There is previous irradiation device mounting hole 230, previous irradiation device mounting hole 230 and plate rail mounting hole 210 are located at the front surface of cabinet 200
The left and right sides, the preceding passive radiator 300 are fixedly mounted in the previous irradiation device mounting hole 230 and seal the previous irradiation
Device mounting hole 230, since preceding passive radiator 300 and 100 shape of woofer etc. are big, setting in this way can form symmetrical junction
Structure improves the overall aesthetic of sound equipment.Likewise, between the preceding passive radiator 300 and the previous irradiation device mounting hole 230
It applies glue at gap, passes through the fixed preceding passive radiator 300 of glue and sealing previous irradiation device mounting hole 230.Passive radiator is logical
It is often used to adjustment bass, enables the designer to the tone color for adjusting speaker entirety.The frequency of fadings of passive radiator is usually
Every octave reduces 18db.It can thus be designed into carrying out resonance sounding at the submerged depth that loudspeaker is not achieved,
It is not in simultaneously obvious " out of stock " the audible frequency from the audible frequency of bass unit to passive radiator, thus from height
To the raw smooth audio curve of low yield.The cone of loudspeaker and the cone of passive radiator can be transported outwardly or inwardly simultaneously
Dynamic (same-phase) or heterodromous combination (different phase).By preceding passive radiator 300, the sound of the bass of sound equipment can be made
Color improves, and enhances the sounding effect of sound equipment.
Heat dissipation sound equipment in the present embodiment further includes having rear passive radiator 400, is opened up in the rear surface of the cabinet 200
There is rear radiator mounting hole 240, the rear passive radiator 400 is fixedly mounted in the rear radiator mounting hole 240 and close
The rear radiator mounting hole 240 is sealed, the rear radiator mounting hole 240 is arranged concentrically with the previous irradiation device mounting hole 230,
Therefore, rear passive radiator 400 and preceding passive radiator 300 are located at the rear surface of cabinet 200 and front surface is symmetrical sets
It sets, by the setting of rear passive radiator 400, so that preceding passive radiator 300 and rear passive radiator 400 is acted synergistically, make low
The bass tones of sound loudspeaker 100 are more perfect, can also allow the sound superposition of the two to enhance, show sound equipment with better loudspeaking
Effect.Previous irradiation device mounting hole 230, rear radiator mounting hole 240 periphery on may also set up step position and (do not marked in diagram
Out), it is respectively used to the location and installation of preceding passive radiator 300, rear passive radiator 400.
Heat dissipation sound equipment in the present embodiment further includes having high pitch loudspeaker 500, the effect of high pitch loudspeaker 500 be by from point
The high-frequency signal (frequency range is generally in 5KHz-10KHz) of frequency device output is reset, and the high pitch loudspeaker 500 is fixed at
The upper surface of the cabinet 200.Glue equally can be used to be adhesively fixed, high pitch loudspeaker 500 speaks end upward,
And the width of high pitch loudspeaker 500 is equal with the width of the cabinet 200, i.e., high pitch loudspeaker 500 is fixed on the cabinet 200
Upper surface on when, the front surface and rear surface of the non-bulging cabinet 200 in the two sides of high pitch loudspeaker 500.In this way, making cabinet 200
Can be complete rectangular as one, integral thickness not will increase, and realize the compact design of structure.In the upper table of the cabinet 200
Face offers loudspeaker fixing groove 250, and the high pitch loudspeaker 500 is fixed in the loudspeaker fixing groove 250, simultaneously
Pass through loudspeaker fixing groove 250 described in glue sealing.Loudspeaker fixing groove 250 accommodates high pitch loudspeaker 500, to high pitch loudspeaker
500 carry out installation positioning, and directly high pitch loudspeaker 500 is placed in loudspeaker fixing groove 250 in assembling process, make assembly more
Simplicity improves assembly efficiency.The upper surface of the high pitch loudspeaker 500 is not higher than the upper surface of the cabinet 200；In this way, sound
Loud integral thickness not will increase, and realize the compact design of structure.The loudspeaker fixing groove 250 is located on the cabinet 200
The middle position on surface makes in this way, being placed in high pitch loudspeaker 500 between woofer 100 and preceding passive radiator 300
The sound for the different frequency that sound equipment issues more is coordinated, and the usage experience of sound equipment is improved.
It is installed on each electronic product for convenience of sound equipment as a component, design has connection on the cabinet 200
Component, the both side surface in the present embodiment in the cabinet 200 is symmetrically arranged with installation bayonet 600, by installing bayonet 600,
Can used screw pass through, to make sound equipment be fixed on electronic product by screw.To facilitate installation into one, in the peace
The inlay card on mouth 600 that is loaded has the Shockproof rubber ring 610 worn for screw.Screw, which passes through Shockproof rubber ring 610, makes Shockproof rubber
Ring 610 is fixed on electronic product, and the installation bayonet 600 of the two sides of cabinet 200 can directly inlay card to Shockproof rubber ring 610
On, when maintenance and installation need to load and unload sound equipment, by the cooperation of Shockproof rubber ring 610 and installation bayonet 600, make sound equipment
It can quickly realize and load and unload with electronic product for a functional component, facilitate later maintenance, while Shockproof rubber ring 610 has buffering
Shock effect avoids making screw loosening due to vibration.
Further include in the cabinet 200 of sound equipment it is necessary to connection circuit, conventional acoustics circuit can be used and realize the invention function
Can, therefore do not illustrated in the present embodiment.
In conclusion a kind of heat dissipation sound equipment proposed by the present invention, is in communication with the outside by magnetic core mounting hole 220, makes loudspeaking
Device magnetic core 120 is directly exposed to except cabinet 200, and the heat that woofer 100 generates when working is due to concentrating on loudspeaker
120 position of magnetic core can be dissipated in naturally outside cabinet 200, so as to avoid in traditional sound equipment by exposed loudspeaker magnetic core 120
Heat concentrate in cabinet 200, cause cabinet 200 overheat and damage the electronic component in cabinet 200, therefore with traditional sound equipment
Compare, the service life of product can be extended.There is preferable thermal diffusivity, design using exposed loudspeaker magnetic core 120 simultaneously
For personnel when designing sound equipment, the power of woofer 100 will not be constrained to small-power because of heat dissipation problem, to increase
The power bracket of woofer 100.Traditional sound equipment is compared, the power for increasing woofer 100 can not be limited by heat dissipation.
Simultaneously using the design of preceding passive radiator 300 and rear passive radiator 400, enhances bass sounding effect, pass through tweeter
High pitch and bass the cooperation enhancing sound that device 500 issues, enhance the tone color expressive force of sound equipment, by installing bayonet 600
Cooperate with Shockproof rubber ring 610, so that sound equipment is quickly realized with electronic product as a functional component and load and unload.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, all these modifications and variations all should belong to the guarantor of appended claims of the present invention
Protect range.
Claims (10)
1. a kind of heat dissipation sound equipment, including woofer, which is characterized in that further include having cabinet；
The front surface of the cabinet offers plate rail mounting hole, and the cabinet rear surface offers concentric with the plate rail mounting hole
Magnetic core mounting hole；
The loudspeaker plate rail of the woofer is fixed in plate rail mounting hole and seals the plate rail mounting hole；
The loudspeaker magnetic core of the woofer is fixed in magnetic core mounting hole and seals the magnetic core mounting hole.
2. heat dissipation sound equipment according to claim 1, it is characterised in that: offer positioning on the periphery of the plate rail mounting hole
The edge of step, the loudspeaker plate rail is fixedly mounted on positioning step.
3. heat dissipation sound equipment according to claim 2, it is characterised in that: the front surface of the loudspeaker plate rail and the cabinet
Front surface flush；
Or the front surface of the loudspeaker plate rail is lower than the front surface of the cabinet.
4. heat dissipation sound equipment according to claim 1, it is characterised in that: the loudspeaker plate rail and the plate rail mounting hole
Joining place is provided with for glue that is fixed and sealing；The gap location of the loudspeaker magnetic core and the magnetic core mounting hole is provided with
For glue that is fixed and sealing.
5. heat dissipation sound equipment according to claim 1, it is characterised in that: it further include having preceding passive radiator, the cabinet
Front surface offers previous irradiation device mounting hole, and the preceding passive radiator is fixedly mounted in the previous irradiation device mounting hole and close
Seal the previous irradiation device mounting hole.
6. heat dissipation sound equipment according to claim 5, it is characterised in that: it further include having rear passive radiator, the cabinet
Rear surface offers rear radiator mounting hole, and the rear passive radiator is fixedly mounted in the rear radiator mounting hole and close
Seal the rear radiator mounting hole.
7. heat dissipation sound equipment according to claim 1, it is characterised in that: it further include having high pitch loudspeaker, the tweeter
Device is fixed at the upper surface of the cabinet.
8. heat dissipation sound equipment according to claim 7, it is characterised in that: the upper surface of the cabinet offers loudspeaker and fixes
Slot, the high pitch loudspeaker are fixed in the loudspeaker fixing groove and seal the loudspeaker fixing groove, the high pitch
The upper surface of loudspeaker is not higher than the upper surface of the cabinet.
9. heat dissipation sound equipment according to claim 1, it is characterised in that: the both side surface of the cabinet is symmetrically arranged with installation
Bayonet.
10. heat dissipation sound equipment according to claim 9, it is characterised in that: there is inlay card on the installation bayonet wears for screw
Fixed Shockproof rubber ring after inserting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910289547.0A CN109982176A (en) | 2019-04-11 | 2019-04-11 | A kind of heat dissipation sound equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910289547.0A CN109982176A (en) | 2019-04-11 | 2019-04-11 | A kind of heat dissipation sound equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109982176A true CN109982176A (en) | 2019-07-05 |
Family
ID=67084179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910289547.0A Pending CN109982176A (en) | 2019-04-11 | 2019-04-11 | A kind of heat dissipation sound equipment |
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| Country | Link |
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| CN (1) | CN109982176A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110337048A (en) * | 2019-07-08 | 2019-10-15 | 珠海格力电器股份有限公司 | Sound box assembly method, sound box and air conditioner |
| CN113747284A (en) * | 2021-09-01 | 2021-12-03 | 无锡杰夫电声股份有限公司 | Sound box capable of reducing VOC value in use |
| CN113852890A (en) * | 2021-09-23 | 2021-12-28 | 安徽井利电子有限公司 | Abnormal sound eliminating loudspeaker system for preventing center glue curing structure from being damaged |
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| CN209627590U (en) * | 2019-04-11 | 2019-11-12 | 深圳康佳电子科技有限公司 | A kind of heat dissipation sound equipment |
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| CN110337048A (en) * | 2019-07-08 | 2019-10-15 | 珠海格力电器股份有限公司 | Sound box assembly method, sound box and air conditioner |
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| CN113852890A (en) * | 2021-09-23 | 2021-12-28 | 安徽井利电子有限公司 | Abnormal sound eliminating loudspeaker system for preventing center glue curing structure from being damaged |
| CN113852890B (en) * | 2021-09-23 | 2023-05-12 | 安徽井利电子有限公司 | Abnormal sound eliminating loudspeaker system capable of preventing damage of center glue curing structure |
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