CN221005020U

CN221005020U - Stage lamp

Info

Publication number: CN221005020U
Application number: CN202322959855.4U
Authority: CN
Inventors: 张观文; 吴仕忠
Original assignee: PR Lighting Ltd
Current assignee: PR Lighting Ltd
Priority date: 2023-11-01
Filing date: 2023-11-01
Publication date: 2024-05-24
Anticipated expiration: 2033-11-01

Abstract

The utility model discloses a stage lamp, which has the technical scheme that the stage lamp comprises: a lamp housing, a light source component, an isolation assembly, a first filter assembly, and a second filter assembly; the inside of the isolation assembly is hollow, two ends of the isolation assembly are open, and a lamp housing inner cavity is formed in the isolation assembly; the first filter component is arranged at one end of the inner cavity of the lamp housing, the second filter component is arranged at the other end of the inner cavity of the lamp housing, the light source component is at least partially positioned in the inner cavity of the lamp housing, and the space except the inner cavity of the lamp housing in the lamp housing is an outer cavity of the lamp housing; the outer cavity of the lamp housing is communicated with the inner cavity of the lamp housing to form a filtering channel, and a wind-driving component is arranged on the filtering channel; the fine particles and the oil smoke in the inner cavity of the lamp housing and the outer cavity of the lamp housing are filtered, and the double protection effect is achieved.

Description

Stage lamp

Technical Field

The utility model belongs to the field of lamps, and particularly relates to a stage lamp.

Background

The prior stage lamp is usually used for stage illumination, adjusts the brightness and illumination distance of light, usually emits light by using a light source component as a light source, and generates heat in the process of light emission. The heat generated by the light source part light emission causes higher temperature of the working environment in the lamp, so that various tiny particles (such as dust) and lampblack are generated by the internal parts of the lamp due to the high temperature, and the phenomena of white light emission, low light reflection efficiency, shortened service life, blasting and the like of the light source part are easily caused by the various tiny particles and lampblack.

The title of being disclosed in prior art is a waterproof lamps and lanterns inhale oil mist structure, in the patent of bulletin number CN217274032U, mainly include: fixed plate, drive wind part and filter pulp, fixed plate one side is fixed in the inside of lamp body, is equipped with the opening on the fixed plate, and the opening is relative and drive wind part and be fixed in on the fixed plate with driving wind part, and the filter pulp sets up in the air intake one side or/and air outlet one side of driving wind part, but the wind part and the filter pulp in this scheme only can filter the inner chamber of lamp body, are difficult to filter the lamp body outer chamber.

Disclosure of utility model

The utility model aims to provide a stage lamp which can realize the filtration of tiny particles and oil smoke in the inner cavity of a lamp housing and the outer cavity of the lamp housing and has the effect of double protection.

The utility model discloses a stage lamp, comprising: a lamp housing, a light source component, an isolation assembly, a first filter assembly, and a second filter assembly; the inside of the isolation assembly is hollow, two ends of the isolation assembly are open, and a lamp housing inner cavity is formed in the isolation assembly; the first filter component is arranged at one end of the inner cavity of the lamp housing, the second filter component is arranged at the other end of the inner cavity of the lamp housing, the light source component is at least partially positioned in the inner cavity of the lamp housing, and the space except the inner cavity of the lamp housing in the lamp housing is an outer cavity of the lamp housing; the outer cavity of the lamp housing is communicated with the inner cavity of the lamp housing to form a filtering channel, and the filtering channel is provided with a wind-driving component.

Optionally, a fixing plate is disposed on the filtering channel, and the air-driving component is disposed on the fixing plate.

Optionally, a guide plate is arranged on the fixed plate; the guide plate is abutted with the wind-driving component.

Optionally, the first filtering assembly includes: the device comprises a first bracket, a second bracket and a first filter screen; the first support is arranged at one end of the inner cavity of the lamp shell, one side of the first filter screen is abutted against the first support, the other side of the first filter screen is abutted against the second support, and the second support is fixedly connected with the first support.

Optionally, the first bracket includes: the LED lamp comprises a lamp housing, a first main frame, a second main frame, a first side frame and a second side frame, wherein the two sides of the first main frame are respectively provided with a first hanging lug part, and the first hanging lug parts are respectively arranged at one end of the inner cavity of the lamp housing; the second bracket includes: the second main frame is provided with second side frames at two sides, and the second side frames are provided with first clamping grooves corresponding to the first hanging lugs; the first main frame and the first side frame are both abutted with one side of the first filter screen, and the second main frame and the second side frame are both abutted with the other side of the first filter screen; the first clamping groove is clamped with the corresponding first hanging lug part.

Optionally, the second filter assembly includes: the third bracket, the fourth bracket and the second filter screen; the third support is arranged at the other end of the inner cavity of the lamp shell, one side of the second filter screen is abutted against the third support, the other side of the second filter screen is abutted against the fourth support, and the fourth support is fixedly connected with the third support.

Optionally, the third support includes: the two sides of the third main frame are respectively provided with a third side frame, the third side frame is provided with a second hanging lug part, and the two second hanging lug parts are respectively arranged at the other end of the inner cavity of the lamp shell; the fourth bracket includes: a fourth main frame, wherein both sides of the fourth main frame are provided with fourth side frames, and second clamping grooves corresponding to the second hanging lug parts are formed in the fourth side frames; the third main frame and the third side frame are respectively abutted with one side of the second filter screen, and the fourth main frame and the fourth side frame are respectively abutted with the other side of the second filter screen; the second clamping groove is clamped with the corresponding second hanging lug part.

Optionally, one side of lamp body inner chamber is first separator, first separator adopts the heat conduction material to make, first separator includes: a first heat conductive sheet and a plurality of second heat conductive sheets; the plurality of second heat conductive sheets are arranged on the first heat conductive sheet at intervals.

Optionally, the opposite side of lamp body inner chamber is the second barrier, the second barrier adopts the heat conduction material to make, the second barrier includes: a third heat conductive sheet and a plurality of fourth heat conductive sheets; the plurality of fourth heat conductive sheets are arranged on the third heat conductive sheet at intervals.

Optionally, a connection plate is arranged on the filtering channel, and an air inlet channel is arranged on the connection plate.

The technical scheme provided by the utility model has the following advantages and effects: through the setting of dispelling wind part for the circulation of air in the lamp body is followed filtering channel, makes tiny particle and the oil smoke in the lamp body blow first filter component and second filter component in proper order or blow second filter component and first filter component in proper order, realizes the filtration to tiny particle and the oil smoke of lamp body inner chamber, and prevents tiny particle and the oil smoke in lamp body outer chamber and get into the lamp body inner chamber, through the setting of first filter component and second filter component, plays dual protection's effect.

Drawings

FIG. 1 is an exploded view of the stage light fixture and lamp housing of the present disclosure;

FIG. 2 is an exploded view of the stage light fixture of the present disclosure;

FIG. 3 is a cross-sectional view of the stage light fixture of the present disclosure;

Fig. 4 is an exploded view of a second filter assembly of the present disclosure.

Reference numerals illustrate:

1. A bottom plate; 2. a first spacer; 21. a first heat conductive sheet; 22. a second heat conductive sheet; 3. a second spacer; 31. a fourth heat conductive sheet; 4. a first filter assembly; 41. a first bracket; 42. a second bracket; 43. a first filter screen; 5. a second filter assembly; 51. a third bracket; 511. a third main frame; 512. a third side frame; 513. a second ear-hanging portion; 52. a fourth bracket; 521. a fourth main frame; 522. a fourth side frame; 523. a second clamping groove; 53. a second filter screen; 6. a partition plate; 61. a fixing plate; 62. a deflector; 63. an air inlet channel; 7. a wind-driving component; 8. a light source part; 9. an inner cavity of the lamp housing; 10. an outer cavity of the lamp housing.

Detailed Description

In order that the utility model may be readily understood, a more particular description of specific embodiments thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

The terms "first" and "second" … "as used herein, unless specifically indicated or otherwise defined, are merely used to distinguish between names and do not denote a particular quantity or order.

The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items, unless specifically stated or otherwise defined.

The term "fixed" or "connected" as used herein may be directly fixed or connected to an element, or indirectly fixed or connected to an element.

As shown in fig. 1-3, an embodiment of the present utility model discloses a stage light fixture, including: a lamp housing, a light source component 8, an isolation assembly, a first filter assembly 4 and a second filter assembly 5; the inside of the isolation assembly is hollow, two ends of the isolation assembly are open, and a lamp housing inner cavity 9 is formed in the isolation assembly; the first filter component 4 is arranged at one end of the lamp housing inner cavity 9, the second filter component 5 is arranged at the other end of the lamp housing inner cavity 9, the light source component 8 is at least partially positioned in the lamp housing inner cavity 9, and the space except the lamp housing inner cavity in the lamp housing is a lamp housing outer cavity 10; the outer cavity 9 of the lamp housing is communicated with the inner cavity 10 of the lamp housing to form a filtering channel, and the filtering channel is provided with a wind-driving component 7.

In practical application, the stage light fixture may be a waterproof stage light fixture or a non-waterproof stage light fixture, the isolation assembly is provided with a connecting hole, the light source component 8 is installed in the connecting hole, and the connecting hole may be a through hole, so that the light source component 8 can be at least partially located in the inner cavity 9 of the lamp housing; in the use process of the stage lamp, various tiny particles and lampblack can be generated by the illumination of the light source component 8, the infrared radiation and the dust baking by touching the high-temperature light source component 8, the phenomena of whitening of the light source component 8, low luminous efficiency, shortened service life, explosion and the like are easily caused, in the embodiment, the first filter component 4 completely covers one end of the inner cavity of the lamp shell, the second filter component 5 completely covers the other end of the inner cavity of the lamp shell, as shown in fig. 3, the fan is adopted by the air-driving component 7, the air in the lamp shell circulates along the filtering channel through the arrangement of the air-driving component 7, the air outlet of the air-driving component 7 faces the second filter component, the tiny particles and lampblack in the outer cavity 10 of the lamp shell can be filtered through the arrangement of the first filter component 4, the tiny particles and lampblack in the outer cavity 10 of the lamp shell are prevented from entering the inner cavity 9, the tiny particles and lampblack in the inner cavity 9 of the lamp shell are filtered through the arrangement of the second filter component 5, and the dual protection effect is achieved through the arrangement of the first filter component 4 and the second filter component 5.

Further, as shown in fig. 2, the isolation assembly includes: a first separator 2, a second separator 3, a bottom plate 1, and a separator 6; the first separator 2 and the second separator 3 are arranged on the bottom plate 1, and the separator 6 is arranged on the first separator 2 and the second separator 3; one end of the first filter component 4 is fixedly connected with one end of the first isolation piece 2, the other end of the first filter component is fixedly connected with one end of the second isolation piece 3, one end of the second filter component 5 is fixedly connected with the other end of the first isolation piece 2, the other end of the second filter component is fixedly connected with the other end of the second isolation piece 3, and the connecting hole is formed in the isolation plate 6; the first isolation piece 2, the second isolation piece 3, the bottom plate 1 and the isolation plate 6 form a lamp housing inner cavity 9; the filter channels are provided with a fixing plate 61, which fixing plate 61 is arranged on the partition plate 6 in the present embodiment; the wind-driving member 7 is provided on the fixing plate 61.

Specifically, the fixed plate 61 is vertically arranged, and through holes corresponding to the air inlets of the air-driving components 7 are formed in the fixed plate 61, so that heat can be dissipated to the light source components 8, tiny particles and oil smoke in the inner cavity 9 of the lamp housing can be blown to the second filter assembly 5, the tiny particles and the oil smoke are prevented from adhering to the light source components 8, the light source components 8 are prevented from whitening, the luminous efficiency is low, and the service life is shortened and the gun is prevented from being blasted. In addition, a connection plate is disposed on the filtering passage, in this embodiment, the connection plate is disposed on a side of the isolation plate 6 near the first filtering component 4, and an air inlet passage 63 is disposed on the connection plate, for guiding the air filtered by the first filtering component 4 into the lamp housing cavity 9.

Further, as shown in fig. 2 and 3, the fixed plate 61 is provided with a baffle 62; the deflector 62 abuts against the wind-repellent member 7. Specifically, in this embodiment, the two sides of the fixing plate 61 are both provided with the guide plates 62, the two guide plates 62 are vertically arranged, the two guide plates 62 are respectively located at two sides of the air outlet of the air-driving component 7, and the air blown out by the air-driving component 7 is guided to the second filter assembly 5, so as to achieve a better filtering effect.

Further, as shown in fig. 2, the first filter assembly 4 includes: a first bracket 41, a second bracket 42 and a first filter screen 43; one end of the first support 41 is fixedly connected with one end of the first isolation piece 2, the other end of the first support 41 is fixedly connected with one end of the second isolation piece 3, one side of the first filter screen 43 is abutted to the first support 41, the other side of the first filter screen is abutted to the second support 42, and the second support 42 is fixedly connected with the first support 41.

In this embodiment, after the first bracket 41 and the second bracket 42 are fixedly connected, the first filter screen 43 is clamped, so that the first filter screen 43 is fixed, the first filter screen 43 is supported, one end of the first bracket 41 is fixedly connected with one end of the first separator 2, the other end of the first bracket is fixedly connected with one end of the second separator 3, the first filter screen 43 can completely cover a gap between one end of the first separator 2 and one end of the second separator 3, and the first filter screen 43 can filter tiny particles and oil smoke in the outer cavity 10 of the lamp housing. In this embodiment, the first filter 43 is a glass fiber mesh, and glass fiber is an inorganic nonmetallic material with excellent performance, and has the advantages of good insulation, strong heat resistance, good corrosion resistance, high mechanical strength, and the like.

Further, as shown in fig. 4, the first bracket 41 includes: the first main frame, both sides of the first main frame are provided with first side frames, the first side frames are provided with first hanging lugs, one of the two first hanging lugs is fixedly connected with one end of the first isolation piece 2, and the other first hanging lug is fixedly connected with one end of the second isolation piece 3; the second bracket 42 includes: the second main frame is provided with second side frames at two sides, and the second side frames are provided with first clamping grooves corresponding to the first hanging lugs; the first main frame and the first side frame are both abutted with one side of the first filter screen 43, and the second main frame and the second side frame are both abutted with the other side of the first filter screen 43; the first clamping groove is clamped with the corresponding first hanging lug part.

Specifically, the first main frame and the two first side frames form a first bracket 41 of a U shape, the second main frame and the two second side frames form a second bracket 42 of a U shape, the hollowed-out part of the first main frame is identical to the hollowed-out part of the second main frame, the hollowed-out part of the first side frame is identical to the hollowed-out part of the second side frame, and the first filter screen 43 can completely cover the hollowed-out parts of the first main frame and the first side frames; one of the first hanging lugs is fixedly connected with one end of the first isolating piece 2 through a first bolt, the other first hanging lug is fixedly connected with one end of the second isolating piece 3, the first support 41 is conveniently and respectively fixed on the first isolating piece 2 and the second isolating piece 3, the first support 41 and the second support 42 can be initially fixed through the clamping connection of the first clamping groove and the corresponding first hanging lug, in the embodiment, the first main frame and the second main frame can be fixed through the second bolt, and the first side frame and the corresponding second side frame can be fixed through the third bolt.

Further, as shown in fig. 2, the second filter assembly 5 includes: a third bracket 51, a fourth bracket 52 and a second filter 53; one end of the third bracket 51 is fixedly connected with the other end of the first isolation piece 2, the other end of the third bracket is fixedly connected with the other end of the second isolation piece 3, one side of the second filter screen 53 is abutted against the third bracket 51, the other side of the second filter screen is abutted against the fourth bracket 52, and the fourth bracket 52 is fixedly connected with the third bracket 51.

Specifically, the second filter component 5 has the same structure as the first filter component 4, after being fixedly connected with the third bracket 51 and the fourth bracket 52, the second filter screen 53 is clamped, the second filter screen 53 is fixed, the second filter screen 53 is supported, one end of the third bracket 51 is fixedly connected with the other end of the first separator 2, the other end of the third bracket is fixedly connected with the other end of the second separator 3, the second filter screen 53 can completely cover a gap between the other end of the first separator 2 and the other end of the second separator 3, and the second filter screen 53 can filter tiny particles and oil smoke in the inner cavity 9 of the lamp housing. The second filter 53 also employs a glass fiber mesh in this embodiment.

Further, the third bracket 51 includes: the third main frame 511, wherein the two sides of the third main frame 511 are respectively provided with a third side frame 512, the third side frame 512 is provided with a second hanging lug part 513, one of the two second hanging lug parts 513 is fixedly connected with the other end of the first isolation piece 2, and the other second hanging lug part 513 is fixedly connected with the other end of the second isolation piece 3; the fourth bracket 52 includes: a fourth main frame 521, wherein a fourth side frame 522 is provided on both sides of the fourth main frame 521, and a second clamping groove 523 corresponding to the second hanging ear 513 is provided on the fourth side frame 522; the third main frame 511 and the third side frame 512 are both in contact with one side of the second filter 53, and the fourth main frame 521 and the fourth side frame 522 are both in contact with the other side of the second filter 53; the second clamping groove 523 is clamped with the corresponding second hanging lug part 513.

Specifically, the third main frame 511 and the two third side frames 512 form a third bracket 51 of a U shape, the fourth main frame 521 and the two fourth side frames 522 form a fourth bracket 52 of a U shape, the hollowed-out portion of the third main frame 511 is identical to the hollowed-out portion of the fourth main frame 521, the hollowed-out portion of the third side frame 512 is identical to the hollowed-out portion of the fourth side frame 522, and the second filter screen 53 can completely cover the hollowed-out portions of the third main frame 511 and the third side frame 512; one of the second hanging lugs 513 is fixedly connected with the other end of the first spacer 2 through a fourth bolt, the other second hanging lug 513 is fixedly connected with the other end of the second spacer 3, the third bracket 51 is conveniently fixed on the first spacer 2 and the second spacer 3 respectively, the first bracket 51 and the fourth bracket 52 can be initially fixed through the clamping connection between the second clamping groove 523 and the corresponding second hanging lug 513, in the embodiment, the third main frame 511 and the fourth main frame 521 can be fixed through a fifth bolt, and the third side frame 512 and the corresponding fourth side frame 522 can be fixed through a sixth bolt.

Further, the first spacer 2 is made of a heat conductive material, which may be copper or aluminum, and the first spacer 2 includes: a first heat conductive sheet 21 and a plurality of second heat conductive sheets 22; the first heat conductive sheet 21 is provided on the base plate 1, and the plurality of second heat conductive sheets 22 are provided on the first heat conductive sheet 21 in a spaced arrangement. Specifically, in this embodiment, through the arrangement of the first heat conducting fin 21 and the second heat conducting fin 22, heat generated by the light source component 8 in the lamp housing inner cavity 9 is transferred to the lamp housing outer cavity 10, and the heat of the lamp housing outer cavity 10 is discharged through the heat dissipation hole formed in the lamp housing, so that the heat dissipation effect on the light source component 8 can be achieved, and the isolation between the lamp housing outer cavity 10 and the lamp housing inner cavity 9 can be realized by the second isolation piece 3, the first filtering component 4 and the second filtering component 5.

Further, the second spacer 3 is made of a heat conductive material, and the second spacer 3 includes: a third heat conductive sheet and a plurality of fourth heat conductive sheets 31; the third heat conducting fin is disposed on the bottom plate 1, the plurality of fourth heat conducting fins 31 are disposed on the third heat conducting fin in a spaced arrangement, one of the second ear hanging portions 513 of the two second ear hanging portions 513 is fixedly connected with the other end of the second heat conducting fin 22, and the other second ear hanging portion 513 is fixedly connected with the other end of the fourth heat conducting fin 31, specifically, in this embodiment, the heat generated by the light source component 8 in the lamp housing inner cavity 9 is transferred to the lamp housing outer cavity 10 through the arrangement of the third heat conducting fin and the fourth heat conducting fin 31, and the heat of the lamp housing outer cavity 10 is discharged through the heat dissipation hole formed in the lamp housing, so that the heat dissipation effect on the light source component 8 can be achieved, and the isolation between the lamp housing outer cavity 10 and the lamp housing inner cavity 9 can be realized with the first heat dissipation fin, the first filter assembly 4 and the second filter assembly 5.

According to the stage lamp disclosed by the embodiment of the utility model, through the arrangement of the wind-driving component 7, air in the lamp shell circulates circularly along the filtering channel, the first filtering component 4 covers one end of the inner cavity 9 of the lamp shell, the second filtering component 5 covers the other end of the inner cavity 9 of the lamp shell, tiny particles and lampblack in the outer cavity 10 of the lamp shell can be filtered through the arrangement of the first filtering component 4, the tiny particles and lampblack in the outer cavity 10 of the lamp shell are prevented from entering the inner cavity 9 of the lamp shell, the tiny particles and lampblack in the inner cavity 9 of the lamp shell are filtered through the arrangement of the second filtering component 5, and the double protection effect is achieved through the arrangement of the first filtering component 4 and the second filtering component 5.

The above examples are also not an exhaustive list based on the utility model, and there may be a number of other embodiments not listed. Any substitutions and modifications made without departing from the spirit of the utility model are within the scope of the utility model.

Claims

1. Stage lamps and lanterns, its characterized in that includes: a lamp housing, a light source component, an isolation assembly, a first filter assembly, and a second filter assembly; the inside of the isolation assembly is hollow, two ends of the isolation assembly are open, and a lamp housing inner cavity is formed in the isolation assembly; the first filter component is arranged at one end of the inner cavity of the lamp housing, the second filter component is arranged at the other end of the inner cavity of the lamp housing, the light source component is at least partially positioned in the inner cavity of the lamp housing, and the space except the inner cavity of the lamp housing in the lamp housing is an outer cavity of the lamp housing; the outer cavity of the lamp housing is communicated with the inner cavity of the lamp housing to form a filtering channel, and the filtering channel is provided with a wind-driving component.

2. A stage light fixture according to claim 1, wherein the filter channel is provided with a fixing plate, and the air-driving member is provided on the fixing plate.

3. A stage light fixture according to claim 2, wherein the fixed plate is provided with a baffle; the guide plate is abutted with the wind-driving component.

4. The stage light fixture of claim 1, wherein the first filter assembly comprises: the device comprises a first bracket, a second bracket and a first filter screen; the first support is arranged at one end of the inner cavity of the lamp shell, one side of the first filter screen is abutted against the first support, the other side of the first filter screen is abutted against the second support, and the second support is fixedly connected with the first support.

5. The stage light fixture of claim 4, wherein the first bracket comprises: the LED lamp comprises a lamp housing, a first main frame, a second main frame, a first side frame and a second side frame, wherein the two sides of the first main frame are respectively provided with a first hanging lug part, and the first hanging lug parts are respectively arranged at one end of the inner cavity of the lamp housing; the second bracket includes: the second main frame is provided with second side frames at two sides, and the second side frames are provided with first clamping grooves corresponding to the first hanging lugs; the first main frame and the first side frame are both abutted with one side of the first filter screen, and the second main frame and the second side frame are both abutted with the other side of the first filter screen; the first clamping groove is clamped with the corresponding first hanging lug part.

6. The stage light fixture of claim 1, wherein the second filter assembly comprises: the third bracket, the fourth bracket and the second filter screen; the third support is arranged at the other end of the inner cavity of the lamp shell, one side of the second filter screen is abutted against the third support, the other side of the second filter screen is abutted against the fourth support, and the fourth support is fixedly connected with the third support.

7. The stage light fixture of claim 6, wherein the third bracket comprises: the two sides of the third main frame are respectively provided with a third side frame, the third side frame is provided with a second hanging lug part, and the two second hanging lug parts are respectively arranged at the other end of the inner cavity of the lamp shell; the fourth bracket includes: a fourth main frame, wherein both sides of the fourth main frame are provided with fourth side frames, and second clamping grooves corresponding to the second hanging lug parts are formed in the fourth side frames; the third main frame and the third side frame are respectively abutted with one side of the second filter screen, and the fourth main frame and the fourth side frame are respectively abutted with the other side of the second filter screen; the second clamping groove is clamped with the corresponding second hanging lug part.

8. A stage light fixture according to any one of claims 1-7, wherein one side of the interior cavity of the lamp housing is a first spacer, the first spacer being made of a thermally conductive material, the first spacer comprising: a first heat conductive sheet and a plurality of second heat conductive sheets; the plurality of second heat conductive sheets are arranged on the first heat conductive sheet at intervals.

9. A stage light fixture according to any one of claims 1-7, wherein a second spacer is provided on the other side of the interior cavity of the lamp housing, the second spacer being made of a thermally conductive material, the second spacer comprising: a third heat conductive sheet and a plurality of fourth heat conductive sheets; the plurality of fourth heat conductive sheets are arranged on the third heat conductive sheet at intervals.

10. A stage light fixture according to any one of claims 1-7, wherein the filter channel is provided with a connection plate, and the connection plate is provided with an air inlet channel.