Light bundling cylinder

Abstract

The utility model provides a beam barrel which comprises a connecting barrel and a beam barrel body which is arranged on the connecting barrel in a sleeved mode and can rotate relative to the connecting barrel, an installation groove is formed in the inner wall of the beam barrel body, and a guide sliding groove is formed in the outer wall of the connecting barrel. The outer groove wall of the mounting groove extends into the guide sliding groove and can slide along the guide sliding groove; a mounting groove is formed in the connecting cylinder, at least one ball plunger is arranged along the groove bottom of the mounting groove, a plurality of positioning grooves are formed around the part, extending into the mounting groove, of the connecting cylinder, the positioning grooves are uniformly distributed at certain intervals, and each ball plunger can be embedded into one positioning groove and can jump and be positioned in the two adjacent positioning grooves. By adopting the scheme, the defect that the angle of a projection pattern can be changed only by adjusting the angle of a projection sheet in a traditional beam barrel is overcome, so that the adjusting effect is more visual; in addition, accurate adjustment and timely adjustment feedback can be achieved through cooperation of the ball head plunger and the positioning groove.

Description

Technical Field

[0001] The utility model belongs to the technical field of photographic equipment, and particularly relates to a snoot. Background Art

[0002] A snoot is a common photographic lighting accessory that can reduce the irradiation area of ​​a light source and is used for local fill light during photography to create a unique lighting effect. In addition, by placing some slides with different patterns or images on the existing snoot, different light and shadow patterns can be emitted from its head, allowing photographers to obtain various artistic effects in indoor environments, such as adding window shadows, tree shadows, stripes, etc. to portraits. In order to obtain different light and shadow patterns, there are generally multiple slides, each with a different pattern and a different projected light and shadow pattern. The slides are detachable and arranged in the light channel of the snoot so as to be replaced according to photography needs.

[0003] In the prior art, since the angle of the slide of the snoot cannot be adjusted directly in the snoot, it cannot meet the diverse photography needs. If the angle of the light and shadow pattern needs to be adjusted, the slide needs to be taken out first, and then the placement angle of the slide needs to be adjusted and then reinstalled in the snoot, which is inconvenient to operate. Moreover, even if the projection direction can be changed by adjusting the angle of the slide, each adjustment direction is determined by plugging and unplugging, and the adjustment effect is not intuitive. In order to achieve a good angle requirement, multiple adjustments are often required, and the adjustment process is relatively cumbersome. Utility Model Content

[0004] The main purpose of the utility model is to provide a snoot, in which at least one ball plunger is provided along the bottom of the installation groove, and a plurality of positioning grooves are provided around the portion of the connecting tube extending into the installation groove, and the plurality of positioning grooves are evenly arranged at a certain distance, and the ball plunger can be embedded in a positioning groove and can jump and position along two adjacent positioning grooves; wherein, the number of positioning grooves is set according to the size of the minimum adjustment angle required to meet the demand for fine adjustment of the angle; the above scheme is adopted to overcome the shortcoming that the traditional snoot can only change the projection pattern angle by adjusting the angle of the projection film, so that the adjustment effect is more intuitive and the adjustment process is more convenient and quick; and, precise adjustment and timely adjustment feedback can be achieved through the cooperation of the ball plunger and the positioning groove, further improving the user experience.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A squinting tube, comprising: a connecting tube, and a squinting tube body which is sleeved on the connecting tube and rotatable relative to the connecting tube, the inner wall of the squinting tube body is provided with a mounting groove, the outer wall of the connecting tube is provided with a guide groove, the outer groove wall of the mounting groove extends into the guide groove and can slide along the guide groove; wherein, at least one ball head plunger is provided along the groove bottom of the mounting groove, a plurality of positioning grooves are provided around the part of the connecting tube extending into the mounting groove, the plurality of positioning grooves are evenly arranged at a certain distance, the ball head plunger can be embedded in one of the positioning grooves and can jump and position along two adjacent positioning grooves.

[0007] As a preferred embodiment of the snoot tube, a plurality of fixing protrusions are provided on an outer wall of one end of the connecting tube, and the fixing protrusions are used for fixed connection with the lamp.

[0008] As a preferred embodiment of a snoot tube, the snoot tube body comprises: a snoot tube shell, and a parallel light lens, a shading sheet and a projection sheet arranged in the snoot tube shell; the parallel light lens, the shading sheet and the projection sheet are arranged in sequence along one end of the snoot tube shell connected to the connecting tube toward the other end of the snoot tube shell; a light projection channel is provided in the snoot tube shell, the parallel light lens is installed in the snoot tube shell and is perpendicular to the light projection channel, and the shading sheet and the projection sheet can be plugged in and installed in the snoot tube shell and are perpendicular to the light projection channel.

[0009] As a preferred embodiment of the snoot tube, the snoot tube shell comprises: two half-snoot tube shells assembled with each other; the inner walls of the two half-snoot tube shells are provided with a snap-in groove, and the parallel light lens is clamped on the inner sides of the two snap-in grooves; the two half-snoot tube shells are provided with a shading plate slot, and the shading plate can be inserted and unplugged into the snoot tube shell through the shading plate slot; one of the two half-snoot tube shells is provided with a projection film slot, and the projection film can be inserted and unplugged into the snoot tube shell through the projection film slot.

[0010] As a preferred embodiment of the snoot tube, heat dissipation holes are provided on both sides of the snoot tube housing close to one end of the connecting tube.

[0011] As a preferred embodiment of the snoot tube, the snoot tube shell further comprises: an insulating tube; an abutment groove is provided on the inner side of the snoot tube shell close to the heat dissipation hole, and the insulating tube is embedded in the abutment groove, so that a heat dissipation channel is formed between the insulating tube and the heat dissipation hole.

[0012] As a preferred embodiment of the snoot tube, the snoot tube also includes: a lens assembly, which includes: a barrel shell, a lens module, a reflective cup, a fixing sleeve, and a fixing bolt; the lens module is arranged in the barrel shell, the inner wall of the barrel shell is provided with an abutment protrusion, the fixing sleeve extends toward the lens module to form an abutment boss, and the abutment boss presses the lens module against the abutment protrusion; the reflective cup is arranged at the opening of the fixing sleeve, the fixing sleeve is arranged at the opening of the barrel shell, and the fixing bolt passes through the reflective cup and the fixing sleeve in sequence and then extends into the barrel shell for fixing.

[0013] As a preferred embodiment of the snoot tube, the outer wall of the lens barrel shell is provided with a guide slide convex strip, and the inner wall of the snoot tube shell is provided with a guide slide groove, and the guide slide convex strip can slide along the guide slide groove.

[0014] As a preferred embodiment of the squinting tube, the lens assembly also includes: a guide sliding bolt; a guide sliding through groove is provided along the length direction of the guide sliding groove, and the guide sliding bolt passes through the guide sliding through groove and then extends into the guide sliding protrusion and is fixed, so that the lens barrel shell can be extended and retracted along the squinting tube shell.

[0015] As a preferred embodiment of the snoot tube, the lens assembly further includes: an abutment paddle and a return spring; the fixing sleeve is provided with a limit groove, a first limit column is provided in the limit groove, the abutment paddle is provided with a second limit column, the return spring is clamped between the first limit column and the second limit column, the reflective cup is provided with a limit through groove, the abutment paddle passes through the limit through groove; the reflective cup opening extends outward to form a fixed slot, and the abutment paddle can press the filter used by the snoot tube tightly into the fixed slot.

[0016] The beneficial effects of the utility model are:

[0017] The utility model provides a squinting tube, comprising: a connecting tube, and a squinting tube body which is sleeved with the connecting tube and can rotate relative to the connecting tube, the inner wall of the squinting tube body is provided with a mounting groove, the outer wall of the connecting tube is provided with a guide groove, the outer groove wall of the mounting groove extends into the guide groove and can slide along the guide groove; at least one ball head plunger is provided along the groove bottom of the mounting groove, a plurality of positioning grooves are provided around the part of the connecting tube extending into the mounting groove, the plurality of positioning grooves are evenly arranged at a certain distance, the ball head plunger can be embedded in a positioning groove and can jump and position along two adjacent positioning grooves; wherein, the number of positioning grooves is set according to the size of the minimum adjustment angle required to meet the demand for fine adjustment of the angle; the above scheme is adopted to overcome the disadvantage that the traditional squinting tube can only realize the change of the projection pattern angle by adjusting the angle of the projection film, so that the adjustment effect is more intuitive and the adjustment process is more convenient and quick; and, accurate adjustment and timely adjustment feedback can be realized through the cooperation of the ball head plunger and the positioning groove, so as to further enhance the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work, and all of them belong to the protection scope of the present utility model, among which:

[0019] Figure 1 It is a structural schematic diagram of the snoot provided by the utility model;

[0020] Figure 2 yes Figure 1 A cross-sectional view of the snoot shown;

[0021] Figure 3 yes Figure 1 An exploded schematic diagram of the snoot is shown;

[0022] Figure 4 yes Figure 3 The structural schematic diagram of the connecting tube of the snoot tube shown;

[0023] Figure 5 yes Figure 3 A schematic structural diagram of a snoot body of the snoot shown;

[0024] Figure 6 yes Figure 5 An exploded schematic diagram of the snoot body of the snoot shown;

[0025] Figure 7 yes Figure 6 A schematic structural diagram of an angle of a snoot shell of the snoot shown;

[0026] Figure 8 yes Figure 7 A schematic structural diagram of the snoot housing of the snoot shown in another angle;

[0027] Fig. 9 yes Figure 3 A schematic structural diagram of a lens assembly of a snoot shown;

[0028] Fig.10 yes Fig. 9 An exploded schematic diagram of the lens assembly of the snoot is shown;

[0029] Fig.11 yes Fig.10 A schematic structural diagram of a lens barrel housing of a snoot shown;

[0030] Fig.12 yes Fig.10 The structural schematic diagram of the reflector cup of the snoot shown;

[0031] Fig.13 yes Fig.10 A schematic structural diagram of a fixing sleeve of a snoot shown;

[0032] Fig.14 yes Fig.11 The schematic diagram of the structure of the abutment paddle of the snoot is shown. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present utility model, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The term "and / or" used herein includes any and all combinations of one or more related listed items. The terms "install", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can also be a direct connection or an indirect connection through a medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0035] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed on" or "disposed on" another element, it can be directly connected to the other component or there can be a central element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there can be a central element. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0036] In the description of this specification, the terms "one embodiment", "some embodiments", "specific embodiments", etc. refer to the specific features, structures, materials or characteristics described in conjunction with the embodiment or example being included in at least one embodiment or example of the utility model. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0037] A snoot is a common photographic lighting accessory that can reduce the irradiation area of ​​a light source and is used for local fill light during photography to create a unique lighting effect. In addition, by placing some slides with different patterns or images on the existing snoot, different light and shadow patterns can be emitted from its head, allowing photographers to obtain various artistic effects in indoor environments, such as adding window shadows, tree shadows, stripes, etc. to portraits. In order to obtain different light and shadow patterns, there are generally multiple slides, each with a different pattern and a different projected light and shadow pattern. The slides are detachable and arranged in the light channel of the snoot so as to be replaced according to photography needs.

[0038] In the prior art, since the angle of the slide of the snoot cannot be adjusted directly in the snoot, it cannot meet the diverse photography needs. If the angle of the light and shadow pattern needs to be adjusted, the slide needs to be taken out first, and then the placement angle of the slide needs to be adjusted and then reinstalled in the snoot, which is inconvenient to operate. Moreover, even if the projection direction can be changed by adjusting the angle of the slide, each adjustment direction is determined by plugging and unplugging, and the adjustment effect is not intuitive. In order to achieve a good angle requirement, multiple adjustments are often required, and the adjustment process is relatively cumbersome.

[0039] In the present utility model, if Figure 1 , Figure 2 and Figure 3As shown, the embodiment of the utility model provides a snoot, which comprises: a connecting tube 10, a snoot body 20 sleeved on the connecting tube 10 and rotatable relative to the connecting tube 10, and a lens assembly 30 partially extending into the snoot body 20 and retractable relative to the snoot body 20, the connecting tube 10 is also fixed to a lamp part, and the light emitted by the lamp part sequentially passes through the connecting tube 10, the snoot body 20 and the lens assembly 30 to the outside;

[0040] The inner wall of the snoot tube body 20 is provided with a mounting groove 21, and the outer wall of the connecting tube 10 is provided with a guide groove 11 at a position corresponding to the mounting groove 21. The outer groove wall of the mounting groove 21 extends into the guide groove 11 and can slide along the guide groove 11, thereby enabling the snoot tube housing to rotate relative to the connecting tube 10;

[0041] Among them, at least one ball head plunger 22 is provided along the bottom of the mounting groove 21, and a plurality of positioning grooves 12 are provided around the part of the connecting tube 10 extending into the mounting groove 21. The plurality of positioning grooves 12 are evenly arranged at a certain distance. The ball head plunger 22 can be embedded in one of the positioning grooves 12 and can be positioned by jumping along two adjacent positioning grooves 12 to realize the precise adjustment of the angle of the light beam tube shell relative to the connecting tube 10.

[0042] In the present invention, the above-mentioned scheme is adopted to overcome the shortcoming that the traditional snoot can only change the angle of the projection pattern by adjusting the angle of the projection film, so that the adjustment effect is more intuitive and the adjustment process is more convenient and quick; and, precise adjustment and timely adjustment feedback can be achieved through the cooperation of the ball head plunger 22 and the positioning groove 12, further improving the user experience.

[0043] like Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, in order to fix the connecting tube 10 to the lamp part, the outer wall of one end of the connecting tube 10 is provided with a plurality of fixing protrusions 13, and the fixing protrusions 13 are used to be fixedly connected to the lamp so that the squinting tube can be fixed to the lamp part.

[0044] Specifically, the snoot shell body 20 includes: a snoot shell 23, and a parallel light lens 24, a shading sheet 25 and a projection sheet 26 arranged in the snoot shell 23; the parallel light lens 24, the shading sheet 25 and the projection sheet 26 are arranged in sequence along one end of the snoot shell 23 connected to the connecting tube 10 toward the other end of the snoot shell 23; a light projection channel 231 is provided in the snoot shell 23, and the parallel light lens 24 is installed in the snoot shell 23 and is perpendicular to the light projection channel 231, and the shading sheet 25 and the projection sheet 26 can be plugged in and installed in the snoot shell 23 and are perpendicular to the light projection channel 231.

[0045] In order to assemble the components inside the snoot tube shell 23, the snoot tube shell 23 includes: two half-snoot tube shells 232 that are assembled with each other; the inner walls of the two half-snoot tube shells 232 are each provided with a snap-in groove 2321, and the parallel light lens 24 is clamped on the inner side of the two snap-in grooves 2321; the two half-snoot tube shells 232 are provided with a shading plate slot 2322, and the shading plate 25 can be inserted and unplugged into the snoot tube shell 23 through the shading plate slot 2322; one of the two half-snoot tube shells 232 is provided with a slide slot 2323, and the slide 26 can be inserted and unplugged into the snoot tube shell 23 through the slide slot 2323.

[0046] In order to dissipate the heat in the snoot shell 23 to the outside, heat dissipation holes 233 are provided on both sides of the snoot shell 23 close to one end of the connecting tube 10. The heat dissipation holes 233 connect the internal space of the snoot shell 23 and the outside, so that the heat in the snoot shell 23 can be dissipated to the outside through the heat dissipation holes 233.

[0047] In order to prevent the snoot tube shell 23 from overheating at the position of the heat dissipation hole 233, the snoot tube shell 23 also includes: an insulating tube 234; an abutment groove 235 is provided on the inner side of the snoot tube shell 23 near the heat dissipation hole 233, and the insulating tube 234 is embedded in the abutment groove 235, so that a heat dissipation channel 230 is formed between the insulating tube 234 and the heat dissipation hole 233, thereby reducing the temperature of the snoot tube shell 23 at the position of the heat dissipation hole 233 without affecting the heat dissipation, thereby avoiding affecting the user's use during use.

[0048] like Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 and Fig.14As shown, in order to assemble the lens assembly 30, the lens assembly 30 includes: a lens barrel housing 31, a lens module 32, a reflective cup 33, a fixing sleeve 34, and a fixing bolt 35; the lens module 32 is arranged in the lens barrel housing 31, and the inner wall of the lens barrel housing 31 is provided with an abutting protrusion 311, and the fixing sleeve 34 extends toward the lens module 32 to form an abutting boss 341, and the abutting boss 341 presses the lens module 32 against the abutting protrusion 311; the reflective cup 33 is arranged at the opening of the fixing sleeve 34, and the fixing sleeve 34 is arranged at the opening of the lens barrel housing 31, and the fixing bolt 35 passes through the reflective cup 33 and the fixing sleeve 34 in sequence and then extends into the lens barrel housing 31 for fixing.

[0049] In order to enable the lens assembly 30 to be telescoped relative to the snoot tube body 20, the outer wall of the lens barrel shell 31 is provided with a guide sliding protrusion 312, and the inner wall of the snoot tube shell 23 is provided with a guide sliding groove 236. The guide sliding protrusion 312 can slide along the guide sliding groove 236, thereby facilitating the telescoped lens assembly 30 relative to the snoot tube body 20.

[0050] In order to facilitate the fixation of the lens assembly 30 when it is extended and retracted relative to the squinting tube body 20, the lens assembly 30 also includes: a guide sliding bolt 36; a guide sliding through groove 237 is provided along the length direction of the guide sliding groove 236, and the guide sliding bolt 36 passes through the guide sliding through groove 237 and then extends into the guide sliding protrusion 312 for fixation, so that the lens housing can be extended and retracted along the squinting tube body 23; in the process of adjusting the lens assembly 30, when it is necessary to extend and retract the lens assembly 30 relative to the squinting tube body 20, the guide sliding bolt 36 is loosened, and after manually pushing the lens assembly 30 to a suitable position, the guide sliding bolt 36 is tightened to fix the lens assembly 30 relative to the squinting tube body 20.

[0051] In order to install the filter at the opening of the reflective cup 33, the lens assembly 30 also includes: a contact paddle 37 and a return spring 38; the fixing sleeve 34 is provided with a limiting groove 342, a first limiting column 3421 is provided in the limiting groove 342, the contact paddle 37 is provided with a second limiting column 371, the return spring 38 is clamped between the first limiting column 3421 and the second limiting column 371, the reflective cup 33 is provided with a limiting through groove 331, the contact paddle 37 passes through the limiting through groove 331; the opening of the reflective cup 33 extends outward to form a fixed slot 332, and the contact paddle 37 can press the filter used by the snoot tightly into the fixed slot 332.

[0052] During the process of installing the filter, the abutment paddle 37 is pushed toward the fixing sleeve 34, and the reset spring 38 is compressed. At this time, the abutment paddle 37 is offset from the fixing slot 332. After the filter is inserted into the fixing slot, the abutment paddle 37 is released, and the reset spring 38 resets the abutment paddle 37 to reset it. The abutment paddle 37 presses the filter tightly into the fixing slot 332 to complete the installation of the filter.

[0053] The utility model is described in detail above with reference to the accompanying drawings, but the utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the invention, and still fall within the scope of protection of the utility model.

Claims

1. A snoot, characterized in that: include: A connecting tube, and a snoot tube body sleeved on the connecting tube and rotatable relative to the connecting tube, wherein the inner wall of the snoot tube body is provided with a mounting groove, and the outer wall of the connecting tube is provided with a guide groove, and the outer groove wall of the mounting groove extends into the guide groove and can slide along the guide groove; Among them, at least one ball head plunger is provided along the bottom of the installation groove, and a plurality of positioning grooves are provided around the part of the connecting tube extending into the installation groove. The plurality of positioning grooves are evenly arranged at a certain distance, and the ball head plunger can be embedded in one of the positioning grooves and can be positioned by jumping along two adjacent positioning grooves.

2. The snoot as claimed in claim 1, characterized in that: The outer wall of one end of the connecting tube is provided with a plurality of fixing protrusions, and the fixing protrusions are used for fixing connection with the lamp.

3. The snoot as claimed in claim 1, characterized in that: The snoot body comprises: a snoot shell, and a parallel light lens, a light shielding sheet and a projection sheet arranged in the snoot shell; The parallel light lens, the light shielding sheet and the projection sheet are arranged in sequence along one end of the snoot shell connected to the connecting tube toward the other end of the snoot shell; A light projection channel is provided in the snoot shell, the parallel light lens is installed in the snoot shell perpendicular to the light projection channel, and the shading sheet and the projection sheet are pluggable and installed in the snoot shell perpendicular to the light projection channel.

4. The snoot as claimed in claim 3, characterized in that: The snoot shell comprises: two half snoot shells assembled with each other; The inner walls of the two half-beam tube housings are both provided with a clamping groove, and the parallel light lens is clamped inside the two clamping grooves; The two half-snoot tube housings are provided with light shielding sheet slots, and the light shielding sheet can be inserted and pulled into the light shielding tube housing through the light shielding sheet slots; One of the two half-snoot tube housings is provided with a projection film slot, and the projection film can be inserted and pulled out of the projection film slot and extended into the snoot tube housing.

5. The snoot as claimed in claim 3, characterized in that: Heat dissipation holes are arranged on both sides of the snoot tube housing close to one end of the connecting tube.

6. The snoot as claimed in claim 5, characterized in that: The snoot shell further comprises: a heat-insulating tube; An abutment groove is provided on the inner side of the snoot tube housing close to the heat dissipation hole, and the heat insulation tube is embedded in the abutment groove, so that a heat dissipation channel is formed between the heat insulation tube and the heat dissipation hole.

7. The snoot as claimed in claim 1, characterized in that: The snoot also includes: a lens assembly, which includes: a lens barrel housing, a lens module, a reflective cup, a fixing sleeve, and a fixing bolt; The lens module is arranged in the lens barrel housing, an abutting convex block is arranged on the inner wall of the lens barrel housing, the fixing sleeve extends toward the lens module to form an abutting convex platform, and the abutting convex platform presses the lens module tightly against the abutting convex block; The reflective cup is arranged at the opening of the fixing sleeve, the fixing sleeve is arranged at the opening of the lens barrel housing, and the fixing bolt passes through the reflective cup and the fixing sleeve in sequence and then extends into the lens barrel housing for fixing.

8. The snoot as claimed in claim 7, characterized in that: The outer wall of the lens barrel shell is provided with a guide slide convex strip, and the inner wall of the light-squinting tube shell is provided with a guide slide groove, and the guide slide convex strip can slide along the guide slide groove.

9. The snoot as claimed in claim 8, characterized in that: The lens assembly further comprises: a guide sliding bolt; A guide slide groove is provided along the length direction of the guide slide groove, and the guide slide bolt passes through the guide slide groove and then extends into the guide slide convex strip for fixation, so that the lens barrel shell can be extended and retracted along the light beam barrel shell.

10. The snoot as claimed in claim 7, characterized in that: The lens assembly further includes: an abutment paddle and a return spring; The fixing sleeve is provided with a limiting groove, a first limiting column is provided in the limiting groove, the contacting paddle is provided with a second limiting column, the reset spring is clamped between the first limiting column and the second limiting column, the reflective cup is provided with a limiting through groove, and the contacting paddle passes through the limiting through groove; The opening of the reflective cup extends outward to form a fixed slot, and the contact paddle can press the filter used by the snoot tightly into the fixed slot.

Images