Anti-hole-blocking heat dissipation type sound box horn

Abstract

The invention relates to the technical field of sound box horns, in particular to an anti-hole-blocking heat dissipation type sound box horn which comprises a front panel, a top plate is fixedly installed at the upper end of the front panel, side plates are fixedly installed at the positions, located on the two sides of the top plate, of the rear end of the front panel, and a power amplifier cover plate is fixedly installed at the rear end of the top plate. Two limiting mounting mechanisms which are arranged up and down are fixedly mounted at the rear end of the front panel, an echo hole is formed in the lower end of the front panel, an inverter tube is fixedly mounted at the rear end of the echo hole, and a cleaning mechanism is fixedly mounted at the rear end of the inverter tube. Meanwhile, the heat dissipation structure attached to the T iron at the rear end of the loudspeaker is arranged, heat generated by the voice coil when the loudspeaker works for a long time is dissipated in time, and the distance between the heat dissipation structure and the rear end of the loudspeaker is controlled through rotation distance adjustment, so that it is guaranteed that the heat dissipation fins can make close contact with the T iron, and too high heat resistance caused by poor contact is avoided. And through the installation fixing mechanism, the loudspeaker is installed in the sound box more stably.

Description

Technical Field

[0001] The present invention relates to the technical field of speaker horns, and in particular to an anti-blocking hole heat dissipation type speaker horn. Background Art

[0002] A bass reflex speaker, also known as a bass reflex vented box or a bass reflex radiator speaker, refers to a type of speaker with a bass reflex hole on the speaker panel.

[0003] The bass reflex hole allows air to flow in and out of the box, has a higher power handling capacity and lower distortion than a sealed box, has sufficient volume, high sensitivity, and requires less output power from the power amplifier than a traditional sealed speaker.

[0004] During the use of the speaker, the voice coil and the power amplifier panel are the main heat-generating components. When the voice coil is energized, an electromagnetic force is generated, and Joule heat is generated due to the resistance when the current passes through. Especially when working at high power or for a long time, the heat will accumulate significantly.

[0005] The existing equipment has the following deficiencies: When the speaker works for a long time, heat will accumulate in the voice coil part. The traditional speaker conducts heat through the T-iron at the back end, and the heat dissipation area is small. After long-term use, it is easy to damage the insulating layer of the voice coil skeleton, resulting in short circuit or open circuit, and causing the speaker to be completely damaged.

[0006] The power amplifier panel of the speaker mostly relies on passive heat dissipation, resulting in problems of uneven heat distribution and local high temperature, which leads to the attenuation of component performance, and even triggers the protection circuit wrongly. Poor heat dissipation will cause the temperature of the power amplifier chip to rise, affecting the working stability and causing distortion of the audio signal.

[0007] The bass reflex tube of the speaker connects the inside and outside air. After long-term use, a large amount of dust will adhere to it, resulting in a change in the aerodynamic characteristics of the inner wall of the bass reflex tube, and the tuning frequency of the bass reflex tube will shift. There will be insufficient low-frequency dive or abnormal resonance peaks. When it is severely blocked, the bass reflex tube may degenerate into an approximate sealed box, and the sound will be dull and loose. Summary of the Invention

[0008] The purpose of the present invention is to solve the disadvantages in the background art, and to propose an anti-blocking hole heat dissipation type speaker horn.

[0009] To achieve the above purpose, the technical solution adopted by the present invention is: an anti-blocking hole heat dissipation type speaker horn, including a front panel, a top plate is fixedly installed at the upper end of the front panel, side plates are fixedly installed on both sides of the top plate at the rear end of the front panel, a power amplifier cover plate is fixedly installed at the rear end of the top plate, two limit installation mechanisms arranged up and down are fixedly installed at the rear end of the front panel, a sound return hole is opened at the lower end of the front panel, a bass reflex tube is fixedly installed at the rear end of the sound return hole, a cleaning mechanism is fixedly installed at the rear end of the bass reflex tube, and a heat dissipation rear cover is fixedly installed on the rear surface of the power amplifier cover plate; The limiting and mounting mechanism includes a mounting hanger fixedly installed on the rear surface of the front panel. A rotating frame is rotatably installed at the rear end of the mounting hanger. A basin frame is provided between the rotating frame and the mounting hanger. A round rod is rotatably installed at the lower end of the rear side of the rotating frame, and a lifting mechanism is installed through the round rod.

[0010] Preferably, sound-absorbing cotton is fixedly installed on the inner surfaces of both side plates. An H-shaped reinforcing member is fixedly installed at the upper end between the front panel and the power amplifier cover plate, and an inclined plate is fixedly installed at the lower end between the front panel and the power amplifier cover plate.

[0011] Preferably, a digital audio interface is fixedly installed on the rear surface of the power amplifier cover plate above the heat dissipation rear cover, and a transmission interface is fixedly installed on the rear surface of the power amplifier cover plate on the left side of the heat dissipation rear cover. Both the digital audio interface and the transmission interface penetrate through the power amplifier cover plate and the basin frame and are connected in communication.

[0012] Preferably, the limiting and mounting mechanism includes a rotating seat fixedly installed at the lower end of the rear surface of the mounting hanger. Symmetrical connecting pipes are fixedly installed at the upper end of the rear surface of the mounting hanger. A limiting ring is fixedly installed between the two mounting hangers. A docking hole corresponding to the connecting pipe is fixedly installed at the upper end of the surface of the rotating frame close to the mounting hanger. A fixing screw is rotatably installed at the rear end of each docking hole. An installation cross plate is fixedly installed at the rear end of the rotating frame, and a heat dissipation mechanism is fixedly installed at the rear end of the installation cross plate.

[0013] Preferably, the heat dissipation mechanism includes an adjustable distance platform fixedly installed at the middle end of the rear surface of the installation cross plate. An adjustable distance rod is installed through the outside of the adjustable distance platform, and a disc is rotatably installed through the adjustable distance rod on the installation cross plate. A heat dissipation fin is fixedly installed at the lower end of the adjustable distance rod on the disc.

[0014] Preferably, the lifting mechanism includes a jack fixedly installed in the middle section of the round rod. An adjustable distance rotating rod is rotatably installed in the jack. A lower connecting seat is rotatably installed on one side of the adjustable distance rotating rod, and a limiting seat is fixedly installed at the upper end of the lower connecting seat.

[0015] Preferably, the cleaning mechanism includes a cleaning outer ring rotatably installed at the rear end of the phase inverter tube. An operation box is fixedly installed on the outer side of the cleaning outer ring. A rotating motor is fixedly installed on the outer side of the upper end of the operation box. A rotating rod is fixedly installed at the output end of the rotating motor. A moving block is installed through the rotating rod. A guide plate is fixedly installed at the lower end of the outer side of the cleaning outer ring, and a filter screen is fixedly installed on the inner side of the cleaning outer ring.

[0016] Preferably, support arms are fixedly installed on both sides of the filter screen at the lower end of the moving block. A number of cleaning rollers arranged at equal intervals are rotatably installed at the upper and lower ends of each support arm. Through grooves are opened at the same position of the cleaning outer ring and the upper end of the operation box.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses a rotatable mounting and fixing mechanism to fix the position of the speaker. At the same time, a heat dissipation structure that fits the T-iron at the rear end of the speaker is provided to timely dissipate the heat generated by the voice coil during the long-term operation of the speaker. By rotating and adjusting the distance to control the distance between the heat dissipation mechanism and the rear end of the speaker, it is ensured that the heat sink can be in close contact with the T-iron, avoiding excessive thermal resistance caused by poor contact. 2. Through the mounting and fixing mechanism, the installation of the speaker inside the speaker box is more stable. When the speaker box moves or is slightly bumped, the position and angle of the speaker can be kept unchanged, avoiding loosening or damage of the speaker caused by vibration. 3. The present invention is provided with a cleaning mechanism at the rear end of the phase inverter tube, which protects the inside of the phase inverter tube from the accumulation of dust and debris, avoids blocking the phase inverter tube, thereby ensuring the normal operation of the phase inverter tube. At the same time, it can also indirectly protect the components such as the speaker inside the speaker box. Timely cleaning of the filter screen can further reduce external interference, ensure that the low-frequency sound waves are not affected by noise when passing through the phase inverter tube, and make the low-frequency response cleaner. 4. The present invention is fixedly installed with a heat dissipation rear cover on the power amplifier cover. When the speaker box is working, in addition to the heat released by the voice coil and other sound-generating components of the speaker, the digital audio interface and transmission interface of the speaker box will also release a large amount of heat. When releasing a large-power sound source for a long time, the power amplifier chip will generate a large amount of heat, which is likely to cause heat accumulation in a local area, resulting in performance attenuation of components and even short circuits in the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a soundproof and heat-dissipating speaker of the present invention; Figure 2 is a schematic structural diagram of another perspective of a soundproof and heat-dissipating speaker of the present invention; Figure 3 is a schematic internal structure diagram of a soundproof and heat-dissipating speaker of the present invention; Figure 4 is a schematic structural diagram of the limit installation mechanism of a soundproof and heat-dissipating speaker of the present invention; Figure 5 is a Figure 4 magnified view at A of a soundproof and heat-dissipating speaker of the present invention; Figure 6 is a schematic structural diagram of another perspective of the limit installation mechanism of a soundproof and heat-dissipating speaker of the present invention; Figure 7 is a Figure 6 magnified view at B of a soundproof and heat-dissipating speaker of the present invention; Figure 8Schematic structural diagram of the phase inversion tube cleaning mechanism of an anti-blocking hole and heat dissipation type speaker horn of the present invention; Figure 9 Schematic structural diagram of the connection outer ring of an anti-blocking hole and heat dissipation type speaker horn of the present invention.

[0019] 1. Front panel; 2. Top panel; 3. Side panel; 4. Power amplifier cover plate; 5. Digital audio interface; 6. Transmission interface; 7. Heat dissipation rear cover; 8. H-shaped reinforcement; 9. Inclined plate; 10. Sound-absorbing cotton; 11. Echo hole; 12. Cone disk; 13. Basin frame; 14. Phase inversion tube; 101. Rotating frame; 102. Installation hanging frame; 103. Fixed screw; 104. Docking hole; 105. Connecting pipe; 106. Rotating seat; 107. Round rod; 108. Limiting ring; 109. Jack; 110. Lower connecting seat; 111. Limiting seat; 112. Distance adjusting rotating rod; 201. Installation horizontal plate; 202. Distance adjusting table; 203. Distance adjusting rod; 204. Disk; 205. Heat sink; 301. Operation box; 302. Rotating motor; 303. Rotating rod; 304. Moving block; 305. Through groove; 306. Filter screen; 307. Guide plate; 308. Cleaning outer ring; 309. Support arm; 310. Cleaning roller. Specific embodiments

[0020] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0021] As Figures 1-9 shown, an anti-blocking hole and heat dissipation type speaker horn includes a front panel 1, a top panel 2 is fixedly installed at the upper end of the front panel 1, side panels 3 are fixedly installed on both sides of the top panel 2 at the rear end of the front panel 1, a power amplifier cover plate 4 is fixedly installed at the rear end of the top panel 2, two limit installation mechanisms arranged up and down are fixedly installed at the rear end of the front panel 1, an echo hole 11 is opened at the lower end of the front panel 1, a phase inversion tube 14 is fixedly installed at the rear end of the echo hole 11, a cleaning mechanism is fixedly installed at the rear end of the phase inversion tube 14, and a heat dissipation rear cover 7 is fixedly installed on the rear surface of the power amplifier cover plate 4; The limit installation mechanism includes an installation hanging frame 102 fixedly installed on the rear surface of the front panel 1, a rotating frame 101 is rotatably installed at the rear end of the installation hanging frame 102, a basin frame 13 is arranged between the rotating frame 101 and the installation hanging frame 102, a round rod 107 is rotatably installed at the lower rear end of the rotating frame 101, and a lifting mechanism is arranged through the round rod 107.

[0022] As Figure 3As shown, sound-absorbing cotton 10 is fixedly installed on the inner surfaces of both side plates 3. At the upper end between the front panel 1 and the power amplifier cover plate 4, an H-shaped reinforcement 8 is fixedly installed. At the lower end between the front panel 1 and the power amplifier cover plate 4, an inclined plate 9 is fixedly installed. The inverted phase tubes 14 are installed through both the inclined plate 9 and the front panel 1. The sound waves at the back of the speaker are guided to the outside of the speaker through the inverted phase tubes 14 and are superimposed on the sound waves at the front of the speaker.

[0023] On the rear surface of the power amplifier cover plate 4, a digital audio interface 5 is fixedly installed at the upper end of the heat dissipation rear cover 7, and a transmission interface 6 is fixedly installed on the left side of the heat dissipation rear cover 7. Both the digital audio interface 5 and the transmission interface 6 penetrate through the power amplifier cover plate 4 and are connected to the speaker frame 13. After the speaker is used for a long time, the power amplifier chip will generate heat, which is likely to cause heat accumulation on the power amplifier cover plate 4. A heat dissipation rear cover 7 is fixedly installed at the rear end of the power amplifier cover plate 4. A micro fan is arranged inside the heat dissipation rear cover 7. When the digital audio interface 5, the transmission interface 6, and the power amplifier chip generate heat, the heat is discharged in time to avoid heat accumulation.

[0024] As Figure 4 , Figure 6 As shown, the limit installation mechanism includes a rotating seat 106 fixedly installed at the lower end of the rear surface of the installation hanger 102. Symmetric connecting pipes 105 are fixedly installed at the upper end of the rear surface of the installation hanger 102. A limit ring 108 is fixedly installed between the two installation hangers 102. At the upper end of the side surface of the rotating frame 101 close to the installation hanger 102, a docking hole 104 corresponding to the connecting pipe 105 is fixedly installed. A fixing screw 103 is rotatably installed at the rear end of each docking hole 104. An installation cross plate 201 is fixedly installed at the rear end of the rotating frame 101, and a heat dissipation mechanism is fixedly installed at the rear end of the installation cross plate 201.

[0025] As Figure 5 As shown, the lifting mechanism includes a jack 109 fixedly installed in the middle section of the round rod 107. A distance-adjusting rotating rod 112 is rotatably installed in the jack 109. A lower connecting seat 110 is rotatably installed on one side of the distance-adjusting rotating rod 112. A limit seat 111 is fixedly installed at the upper end of the lower connecting seat 110, and the limit seat 111 is in close contact with the lower end of the speaker frame 13 to provide an upward supporting force.

[0026] As Figure 7 As shown, the heat dissipation mechanism includes a distance-adjusting table 202 fixedly installed in the middle of the rear surface of the installation cross plate 201. A distance-adjusting rod 203 is installed through the outside of the distance-adjusting table 202, and the distance-adjusting rod 203 penetrates through the installation cross plate 201 and rotatably installs a disc 204. A heat dissipation fin 205 is fixedly installed at the lower end of the distance-adjusting rod 203 located below the disc 204. The heat dissipation fin 205 is in contact with the T-iron of the speaker rear end through control to increase the heat dissipation effect by expanding the heat dissipation area.

[0027] As Figure 8 , Figure 9As shown in the figure, the cleaning mechanism includes a cleaning outer ring 308 rotatably installed at the rear end of the phase inverter tube 14. An operation box 301 is fixedly installed on the outer side of the cleaning outer ring 308. A rotating motor 302 is fixedly installed on the outer side of the upper end of the operation box 301. The output end of the rotating motor 302 is fixedly installed with a rotating rod 303. A moving block 304 is installed through the rotating rod 303. A guide plate 307 is fixedly installed at the lower end of the outer side of the cleaning outer ring 308. A filter screen 306 is fixedly installed inside the cleaning outer ring 308.

[0028] At both sides of the filter screen 306, support arms 309 are fixedly installed at the lower end of the moving block 304. A number of cleaning rollers 310 arranged at equal intervals are rotatably installed at the upper and lower ends of each support arm 309. Through grooves 305 are opened at the same positions of the cleaning outer ring 308 and the upper end of the operation box 301. The cleaning rollers 310 move inside the through grooves 305 to remove dust from both surfaces of the filter screen 306.

[0029] Working principle: When the speaker plays the sound source, the voice coil and the power amplifier chip inside the speaker will release heat. The external device is connected to the speaker through the digital audio interface 5 and the transmission interface 6, and the sound source playback is controlled. A heat dissipation rear cover 7 is fixedly installed on the rear surface of the power amplifier cover 4, and a micro fan for active heat dissipation is arranged inside it. When the digital audio interface 5 and the transmission interface 6 start to release heat affected by the power amplifier chip, the heat dissipation rear cover 7 actively works to cool down and dissipate heat, avoiding heat accumulation in local areas, which may cause the performance attenuation of components or even short circuits in the circuit. An H-shaped reinforcement 8 is fixedly installed between the front panel 1 and the power amplifier cover 4 to provide additional connection and fixation. Sound-absorbing cotton 10 is provided on the inner surfaces of both side plates 3. Sound is a mechanical wave. When the sound wave propagates and encounters obstacles such as the inner wall of the speaker, reflection will occur. If the internal space structure of the speaker is relatively simple, the sound will be reflected multiple times inside the speaker, and these reflected sounds will be superimposed on the original sound signal to form standing waves. The setting of the sound-absorbing cotton 10 reduces the number of internal reflections of the sound, reduces the formation probability of standing waves, and thus makes the sound emitted by the speaker purer, avoiding sound quality distortion caused by standing waves.

[0030] An inclined plate 9 is fixedly installed inside the speaker at the lower end of the H-shaped reinforcement 8. The phase inverter tubes 14 are installed through the upper surface of the inclined plate 9 and the lower outer surface of the front panel 1. The sound wave on the back of the speaker is guided to the outside of the speaker through the phase inverter tubes 14 and is superimposed on the sound wave on the front of the speaker. By using the resonance of the speaker box and the phase inverter tubes 14, the low frequency is extended under the condition that the sound pressure of the speaker remains unchanged, making its low frequency diving ability stronger. Since the lower phase inverter tube 14 is connected to the outside air, after long-term use, dust will accumulate on the surface of the filter screen 306 on the inner wall, resulting in the blockage of the phase inverter tube 14.

[0031] Therefore, a cleaning mechanism is rotatably installed at the rear end of the inverted phase tube 14 in the present invention. A cleaning outer ring 308 is rotatably installed at the rear end of the inverted phase tube 14. An operation box 301 is fixedly installed at the upper end of the outer surface of the cleaning outer ring 308. A mechanism for cleaning is arranged inside the operation box 301. A filter net 306 for filtering large particles and dust is fixedly installed inside the cleaning outer ring 308. A through groove 305 is opened at the same position where the operation box 301 and the cleaning outer ring 308 are close to each other. A rotating motor 302 is fixedly installed on one side of the operation box 301. A rotating rod 303 is fixedly installed at the output end of the rotating motor 302. A moving block 304 is installed through the rotating rod 303. Support arms 309 are fixedly installed at both sides of the lower end of the moving block 304 and located inside the filter net 306. A number of equally spaced cleaning rollers 310 are rotatably installed at the upper and lower ends of each support arm 309. The cleaning rollers 310 move back and forth inside the through groove 305 through the rotating motor 302 to clean the front and back surfaces of the filter net 306. The impurities and dust are guided by a guide plate 307 to fall downward to avoid accumulation. The user can clean it regularly.

[0032] Before the speaker of the present invention is used, a limit installation mechanism is fixedly installed first. The limit installation mechanism fixes the position of the speaker, making the installation of the speaker inside the speaker more stable, and enabling the speaker to maintain its position and angle unchanged when the speaker moves or is impacted, avoiding loosening or damage of the speaker caused by vibration. Before installation, the rotating frame 101 is laid flat. The operator fixedly installs the speaker at the rear end of the front panel 1. At this time, the cone disk 12 of the speaker is located inside the limit ring 108. The limit ring 108 guides and installs the speaker to avoid position deviation. After installation, the operator fits and installs the rotating frame 101 along the rotating seat 106 at the rear end of the hanging frame 102. After the connecting pipe 105 corresponds to the docking hole 104, the position is fixed by using a fixing screw 103. At this time, the hanging frame 102 and the rotating frame 101 are fixed to each other's positions.

[0033] After the speaker is installed and fixed, the operator rotates the round rod 107 according to the position of the speaker. After the chassis 13 at the rear end of the speaker, the operator rotates the distance adjustment rotating rod 112 to control the position movement of the lower connecting seat 110. The limit seat 111 fixedly installed at the upper end of the lower connecting seat 110 fits against the lower end of the chassis 13 to provide an upward supporting force for the speaker and fix the position to avoid mechanical loosening during long-term use, thus causing resonance.

[0034] After the voice coil in the speaker works at high power for a long time, a large amount of heat will be released. Only relying on the T-iron at the rear end cannot dissipate the heat in time. The operator rotates the distance adjustment rod 203 installed through the rear end of the distance adjustment table 202 to control the heat sink 205 to approach the T-iron at the rear end of the chassis 13, so that the heat sink 205 is in close contact with the T-iron, avoiding too high thermal resistance caused by poor contact.

[0035] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A clogging-proof and heat-dissipating speaker horn, including a front panel (1), characterized in that: A top plate (2) is fixedly installed at the upper end of the front panel (1). Side plates (3) are fixedly installed on both sides of the top plate (2) at the rear end of the front panel (1). An amplifier cover plate (4) is fixedly installed at the rear end of the top plate (2). Two limiting installation mechanisms arranged vertically are fixedly installed at the rear end of the front panel (1). A sound return hole (11) is formed at the lower end of the front panel (1). An inverted phase tube (14) is fixedly installed at the rear end of the sound return hole (11). A cleaning mechanism is fixedly installed at the rear end of the inverted phase tube (14). A heat dissipation rear cover (7) is fixedly installed on the rear surface of the amplifier cover plate (4). The limiting installation mechanism includes a mounting hanger (102) fixedly installed on the rear surface of the front panel (1). A rotating frame (101) is rotatably installed at the rear end of the mounting hanger (102). A speaker frame (13) is arranged between the rotating frame (101) and the mounting hanger (102). A round rod (107) is rotatably installed at the lower end of the rear side of the rotating frame (101). A lifting mechanism is installed through the round rod (107).

2. The anti-clogging and heat-dissipating speaker according to claim 1, characterized in that: Sound-absorbing cotton (10) is fixedly installed on the inner surfaces of both side plates (3). An H-shaped reinforcement member (8) is fixedly installed at the upper end between the front panel (1) and the amplifier cover plate (4). An inclined plate (9) is fixedly installed at the lower end between the front panel (1) and the amplifier cover plate (4).

3. The anti-blocking hole heat dissipation type speaker according to claim 1, wherein: A digital audio interface (5) is fixedly installed on the rear surface of the amplifier cover plate (4) at the upper end of the heat dissipation rear cover (7). A transmission interface (6) is fixedly installed on the rear surface of the amplifier cover plate (4) on the left side of the heat dissipation rear cover (7). Both the digital audio interface (5) and the transmission interface (6) penetrate through the amplifier cover plate (4) and are connected to the speaker frame (13).

4. The anti-blocking hole heat dissipation type speaker according to claim 1, wherein: The limiting installation mechanism includes a rotating seat (106) fixedly installed at the lower end of the rear surface of the mounting hanger (102). Symmetric connecting pipes (105) are fixedly installed at the upper end of the rear surface of the mounting hanger (102). A limiting ring (108) is fixedly installed between the two mounting hangers (102). A docking hole (104) corresponding to the connecting pipe (105) is fixedly installed at the upper end of the surface of the rotating frame (101) close to the mounting hanger (102). A fixing screw (103) is rotatably installed at the rear end of each docking hole (104). A mounting cross plate (201) is fixedly installed at the rear end of the rotating frame (101). A heat dissipation mechanism is fixedly installed at the rear end of the mounting cross plate (201).

5. The anti-clogging and heat-dissipating speaker horn according to claim 4, wherein: The heat dissipation mechanism includes an adjustment platform (202) fixedly installed at the middle end of the rear surface of the mounting cross plate (201). An adjustment rod (203) is installed through the outside of the adjustment platform (202). The adjustment rod (203) penetrates through the mounting cross plate (201) and a disc (204) is rotatably installed. A heat dissipation fin (205) is fixedly installed at the lower end of the adjustment rod (203) on the disc (204).

6. The anti-blocking hole heat dissipation type speaker according to claim 1, characterized in that: The lifting mechanism includes a jack (109) fixedly installed in the middle section of the round rod (107). A distance-adjusting rotating rod (112) is rotatably installed in the jack (109). A lower connecting seat (110) is rotatably installed on one side of the distance-adjusting rotating rod (112). A limiting seat (111) is fixedly installed at the upper end of the lower connecting seat (110).

7. The anti-clogging hole heat dissipation type speaker horn according to claim 1, wherein: The cleaning mechanism includes a cleaning outer ring (308) rotatably installed at the rear end of the phase-inverting tube (14). An operation box (301) is fixedly installed on the outer side of the cleaning outer ring (308). A rotating motor (302) is fixedly installed on the outer side of the upper end of the operation box (301). A rotating rod (303) is fixedly installed at the output end of the rotating motor (302). A moving block (304) is installed through the rotating rod (303). A guide plate (307) is fixedly installed at the lower end of the outer side of the cleaning outer ring (308). A filter screen (306) is fixedly installed on the inner side of the cleaning outer ring (308).

8. The anti-clogging and heat-dissipating speaker horn according to claim 7, wherein: On both sides of the filter screen (306) at the lower end of the moving block (304), support arms (309) are fixedly installed. A number of cleaning rollers (310) arranged at equal intervals are rotatably installed at the upper and lower ends of each support arm (309). Through grooves (305) are formed at the same positions of the upper ends of the cleaning outer ring (308) and the operation box (301).

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