Spotlight capable of swinging up and down by 90 degrees

Abstract

The utility model discloses a spotlight capable of swinging up and down by 90 degrees, which comprises a connecting rod and a spotlight main body, one end of the connecting rod is connected with a spotlight box, and the other end of the connecting rod is connected with the spotlight main body in a swinging manner; the connecting rod comprises a rod body and a threaded rod, the rod body is detachably connected with the threaded rod through a connecting cylinder, and when the rod body is connected with the threaded rod in an inserted mode, a first conductive structure in the rod body makes contact with a second conductive structure in the threaded rod for conduction; the rod body is connected with the connecting cylinder in an inserted mode through the limiting rod, the connecting cylinder is connected with the threaded rod in an inserted mode, a first conductive structure and a second conductive structure which are independent are arranged between the rod body and the threaded rod, and the two conductive structures can be powered off and powered on in an inserted mode along with separation of the rod body and the threaded rod. In this way, a user can conveniently disassemble and assemble the spotlight when the spotlight breaks down and is damaged, then the user can conveniently use the spotlight, and the use cost is saved.

Description

Technical Field

[0001] The utility model relates to the field of track spotlights, in particular to a spotlight that can be swung up and down by 90 degrees. Background Art

[0002] The track spotlight consists of a track, a spotlight holder and a spotlight. The spotlight is connected to the spotlight holder, and the spotlight holder is plugged into the track. When in use, the spotlight holder slides in the track to adjust the distance from the goods to be illuminated, and then the up and down angles of the spotlight are adjusted to better illuminate the goods.

[0003] With the use of track spotlights, the circuit board in the spotlight holder or the spotlight itself may be damaged. After damage, a new spotlight holder or spotlight needs to be replaced. However, in order to be adjustable up and down, the spotlight is connected to the spotlight holder through a rod or other linkage components. Some linkage components have wire harnesses inserted inside. When replacing such linkage components with wire harnesses inserted inside and the spotlight connected to it, it is necessary to remove the linkage component and the spotlight from the spotlight holder together, and then separate the linkage component and the spotlight. If the wire harness in the linkage component cannot be pulled out, it may be necessary to replace the spotlight and the linkage component at the same time. This method is time-consuming and labor-intensive, and increases the user's usage cost. Utility Model Content

[0004] In view of this, the utility model aims to solve the deficiencies in the prior art, and its main purpose is to provide a spotlight that can be swung up and down by 90 degrees. The spotlight and the linkage assembly are configured to be pluggable so that users can quickly replace the spotlight when it is damaged, thereby facilitating user use and reducing user costs.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: a spotlight that can be swung up and down, including a connecting rod and a spotlight body, one end of the connecting rod is connected to the spotlight box, and the other end is swingably connected to the spotlight body, the connecting rod includes a rod body and a threaded rod, the rod body is detachably connected to the threaded rod through a connecting tube, when the rod body is plugged into the threaded rod, the first conductive structure in the rod body is in contact and conductive with the second conductive structure in the threaded rod.

[0006] Furthermore, a limiting rod is provided at the butt end of the rod body and the connecting tube, one end of the first conductive structure protrudes from the plug-in end of the limiting rod and is aligned with the second conductive structure, a receiving groove is provided on the limiting rod, and a limiting portion that can undergo elastic displacement is provided on the receiving groove. When the rod body is rotated until the limiting portion is opposite to the insertion opening on the connecting tube, the limiting portion pops out of the insertion opening and connects with the inner wall of the threaded rod; when the connecting tube rotates, the limiting portion retracts into the connecting hole so that the rod body, the connecting tube and the threaded rod can be separated from each other.

[0007] Furthermore, one end of the connecting tube has a cavity opening toward the limiting rod, the limiting rod is inserted into the cavity, the threaded rod is provided with a cavity, and the connecting tube is inserted into the cavity.

[0008] Furthermore, the connecting cylinder comprises a first connecting disk and a second connecting disk, the second connecting disk is provided with a guide groove, the first connecting disk is inserted into the guide groove, and the guide groove and the first connecting disk are connected via a slider and a slide groove.

[0009] Furthermore, the insertion opening includes a first insertion opening, a second insertion opening and a third insertion opening. The first insertion opening is arranged on the first connecting disk, the second insertion opening is arranged on the second connecting disk, and the third insertion opening is arranged on the inner wall of the cavity. The rod body is plugged into the connecting tube so that the limiting part passes through the first insertion opening and the second insertion opening to the third insertion opening.

[0010] Furthermore, the limiting part includes a spring arranged in the receiving groove, one end of the spring is connected to the resistance part, and when there is no external force squeezing, the end of the resistance part moves outward from the receiving groove with the elastic displacement of the spring and is plugged into the insertion port.

[0011] Furthermore, a limiting groove is provided on the side of the abutting portion, and when the rod body or the first connecting disk rotates, the side edge of the first connecting disk or the second connecting disk can be plugged into the limiting groove.

[0012] Furthermore, the cavity passes through the threaded rod, and the second conductive structure includes a bundle of wires passing through the cavity to the bottom of the second connecting plate, and a conductive copper sheet embedded in the bottom of the second connecting plate. The conductive copper sheet is soldered to the bundle of wires, and one side of the conductive copper sheet extends into the cavity. The conductive wire composed of the first conductive structure in the limiting rod is in contact with the conductive copper sheet in the second conductive structure to supply power to the spotlight body.

[0013] Furthermore, the spotlight body comprises a protective cover, a lens bracket and a lamp holder, the lens bracket is sleeved on the lamp holder and the periphery of the lamp, and the protective cover is sleeved on the lamp holder and the lens bracket.

[0014] Furthermore, a connecting groove is provided at the bottom of the lamp holder and the protective cover, the rod body is inserted into the connecting groove, and the rod body is connected to the lamp holder through threaded openings on both sides of the connecting groove and screws in the threaded openings.

[0015] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that the connecting rod connected to the spotlight body is divided into a rod body, a connecting tube and a threaded rod. The rod body is plugged into the connecting tube through a limiting rod, and the connecting tube is plugged into the threaded rod. Independent first conductive structures and second conductive structures are respectively provided between the rod body and the threaded rod, and the two conductive structures can be powered off when the rod body and the threaded rod are separated, and powered on when plugged in, so that users can disassemble and install the spotlight when it fails or is damaged, thereby facilitating users' use and saving use costs.

[0016] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of embodiment 1 of the present utility model.

[0018] Figure 2 It is an exploded view of embodiment 1 of the present utility model.

[0019] Figure 3 It is a cross-sectional view of Example 1 of the utility model.

[0020] Figure 4 It is a three-dimensional diagram of the connecting tube of Example 1 of the utility model.

[0021] Figure 5 It is a cross-sectional view of the connecting tube of Example 1 of the utility model.

[0022] Figure 6 It is a cross-sectional view of the limiting rod of Example 1 of the utility model.

[0023] Figure 7 It is embodiment 1 of the utility model Figure 5 Enlarged view of point A.

[0024] Figure 8 It is a three-dimensional diagram of the threaded rod of Example 1 of the utility model.

[0025] Description of the accompanying drawings:

[0026] 10 spotlight body, 11 protective cover, 12 lens bracket, 13 lamp holder, 14 connecting groove;

[0027] 20 connecting rod; 21 rod body, 21a limiting rod, 21a1 receiving groove, 21b limiting part, 21b1 spring, 21b2 resistance part, 21b3 limiting groove; 22 screw; 23 connecting cylinder, 23a first connecting disk, 23b second connecting disk, 23c guiding groove, 23c1 sliding block, 23c2 sliding groove, 23d insertion opening, 23d1 first insertion opening, 23d2 second insertion opening, 23d3 third insertion opening; 24 threaded rod, 24a containing cavity; 30 first conductive structure, 40 second conductive structure. DETAILED DESCRIPTION

[0028] Please refer to Figure 1-8As shown, it shows the specific structure of the preferred first embodiment of the utility model, which is a spotlight that can swing up and down 90 degrees, including a connecting rod 20 and a spotlight body 10, one end of the connecting rod 20 is connected to the spotlight box, and the other end is swingably connected to the spotlight body 10; the connecting rod 20 includes a rod body 21 and a threaded rod 24, and the rod body 21 is detachably connected to the threaded rod 24 through a connecting tube 23. When the rod body 21 is plugged into the threaded rod 5724, the first conductive structure 30 in the rod body 21 is in contact with the second conductive structure 40 in the threaded rod 5724. Compared with the connecting rod on the traditional spotlight, the present spotlight and its matching connecting rod 20 are divided into multiple parts, and the parts can be separated from each other, which is convenient for users to replace the spotlight after it is damaged, and the replaced spotlight is also easier to dock and install.

[0029] Specifically, when the spotlight body 10 is replaced, the limiting portion 21b is squeezed by rotating the connecting tube 23, so that the limiting portion 21b is retracted into the limiting rod 21a. At this time, there is no limit between the rod body 21, the connecting tube 23 and the threaded rod 24, and the user can separate them to facilitate the replacement of the new spotlight body 10. When the replaced spotlight body 10 is plugged into the connecting tube 23 with the rod body 21, and the connecting tube 23 is inserted into the threaded rod 24, the rod body 21 can be rotated so that the contact portion 21b2 on the rod body 21 passes through the connecting tube 23 and is inserted into the inner wall of the threaded rod 24 through elastic movement, thereby avoiding the separation of the rod body 21, the connecting tube 23 and the threaded rod 24 when it is not necessary.

[0030] like Figure 4 , Figure 5 and Figure 7As shown, exemplarily, a limiting rod 21a is provided at the butt end of the rod body 21 and the connecting tube 23, one end of the first conductive structure 30 protrudes from the plug-in end of the limiting rod 21a and is aligned with the second conductive structure 40, a receiving groove 21a1 is provided on the limiting rod 21a, and a limiting portion 21b that can undergo elastic displacement is provided on the receiving groove 21a1. When the rod body 21 is rotated until the limiting portion 21b is opposite to the insertion opening 23d on the connecting tube 23, the limiting portion 21b pops out of the insertion opening 23d and connects with the inner wall of the threaded rod 24; when the connecting tube 23 is rotated, the limiting portion 21b retracts into the connecting hole, so that the rod body 21, the connecting tube 23 and the threaded rod 24 can be separated from each other. When the limiting rod 21a is inserted into the cavity in the connecting tube 23, the limiting portion 21b on the side wall of the limiting rod 21a is not necessarily directly aligned with the insertion opening 23d on the side wall of the connecting tube 23. The user needs to rotate the rod body 21 to make the limiting rod 21a rotate in the cavity. When the limiting portion 21b is aligned with the insertion opening 23d by rotation, the limiting portion 21b is inserted into the insertion opening 23d under elastic movement and extends into the cavity 24a. In this way, the rod body 21, the connecting tube 23 and the threaded rod 24 are connected together and form a mutual limit. In addition, when the connecting tube 23 is inserted into the cavity 24a, if it is not limited by the limiting portion 21b, the connecting tube 23 is rotatable. However, when the limiting rod 21a is inserted into the connecting tube 23 and rotated, the limiting portion 21b and the inner wall of the cavity in the connecting tube 23 will cause the connecting tube 23 to rotate together, and thus the limiting portion 21b cannot be inserted into the insertion opening 23d. Therefore, when rotating the rod body 21, it is necessary to first pinch or use other objects to limit the rotation of the connecting tube 23 to ensure that the rod body 21 will not drive the connecting tube 23 to rotate.

[0031] like Figure 5 and Figure 8 As shown, for example, one end of the connecting tube 23 has a cavity opening toward the limiting rod, the limiting rod 21a is inserted into the cavity, the threaded rod 24 is provided with a cavity 24a, and the connecting tube 23 is inserted into the cavity 24a. After the limiting rod 21a is inserted into the cavity on the connecting tube 23 and its upper limit portion 21b passes through the insertion opening 23d, if the rod body 21, the connecting tube 23 and the threaded rod 24 are separated outwardly, the limiting portion 21b needs to be retracted and stored in the limiting rod 21a. For this purpose, the connecting tube 23 is divided into two parts: a first connecting plate 23a and a second connecting plate 23b.

[0032] Specifically, because the connecting tube 23 is divided into a first connecting plate 23a and a second connecting plate 23b, and the second connecting plate 23b is plugged into the cavity 24a, the wire harness that supplies power to the spotlight body 10 cannot be connected to the spotlight body 10 by routing it in the connecting rod 20 when it is necessary to conveniently replace the spotlight body 10. Instead, the wire harness in the spotlight box enters the inner cavity 24a of the threaded rod 24 and is soldered to the conductive copper sheet at the bottom of the second connecting plate 23b. After the limiting rod 21a is inserted into the cavity, it contacts the conductive copper sheet at the bottom of the second connecting plate 23b. Since the conductive copper sheet is divided into positive and negative poles, it is normally conductive. Conductive wire is also embedded in the limiting rod 21a and electrically connected to the conductive copper sheet, thereby supplying power to the spotlight body 10. At this time, a wiring harness is soldered on the conductive copper sheet in the second connecting disk 23b. If it is rotated, it is easy to cause the wiring harness to break. The first connecting disk 23a needs to be rotated to squeeze the limiting portion 21b so that it can retract into the limiting rod 21a. A guide groove 23c is selected to be opened on the second connecting disk 23b. The guide groove 23c is a truncation opening opened from top to bottom to ensure that after the first connecting disk 23a is inserted into the guide groove 23c, the cavity diameters in the first connecting disk 23a and the second connecting disk 23b will not change. In order to avoid the separation of the first connecting disk 23a and the second connecting disk 23b, a sliding groove 23c2 is opened on the bottom wall or side wall of the guide groove 23c. The sliding block 23c1 is slidably connected in the sliding groove 23c2. The sliding block 23c1 is fixed to the first connecting disk 23a. It should be noted that the sliding block 23c1 cannot block the insertion port 23d.

[0033] like Figure 5 and Figure 8 As shown, exemplarily, the insertion opening 23d includes a first insertion opening 23d1, a second insertion opening 23d2 and a third insertion opening 23d3, the first insertion opening 23d1 is provided at the first connection plate 23a, the second insertion opening 23d2 is provided at the second connection plate 23b, and the third insertion opening 23d3 is provided at the inner wall of the cavity 24a, and the rod body 21 is plugged with the connecting tube 23 so that the limiting portion 21a321b passes through the first insertion opening 23d1 and the second insertion opening 23d2 to the third insertion opening 23d3. By dividing the insertion opening 23d into three parts, the limiting portion 21b entering the insertion opening 23d can be better clamped to prevent the limiting portion 21b from resetting itself under the action of external force, thereby affecting the user's use of the spotlight.

[0034] Specifically, because the spotlight body 10 is suspended, when the user adjusts the irradiation angle of the spotlight body 10, the rod body 21 connected to the spotlight body 10 will be offset due to the driving force brought by the weight due to the change in angle. At this time, if the rear limit portion 21b inserted from the first insertion opening 23d1 and the second insertion opening 23d2 to the third insertion opening 23d3 lacks a limit, it is very easy to be recovered due to the conflict with the inner wall of the first insertion opening 23d1 and the second insertion opening 23d2, thereby affecting the user's use. For this reason, if Figure 6 As shown, a limiting groove 21b3 is provided on the side of the abutting portion 21b2. When the rod body 21 or the first connecting disk 23a rotates, the side edge of the first connecting disk 23a or the second connecting disk 23b can be plugged into the limiting groove 21b3. Because the first insertion opening 23d1 is located on the side wall of the first connecting disk 23a, the second insertion opening 23d2 is located on the side wall of the second connecting disk 23b, and the thickness of the first connecting disk 23a and the second connecting disk 23b is relatively thin, when the resistance part 21b2 passes through the first insertion opening 23d1 and the second insertion opening 23d2, the side walls of the first insertion opening 23d1 and the second insertion opening 23d2 can resist the resistance part 21b2 and insert into the limiting groove 21b3. There are two limiting grooves 21b3, one is located on the left side of the resistance part 21b2 and the other is located on the right side. Through the opposite setting of the limiting grooves 21b3, the spotlight body 10 drives the rod body 21 to rotate clockwise or counterclockwise, which will cause the first connecting disk 23a and the second connecting disk 23b to be clamped in the limiting groove 21b3 for limitation. Only when the user rotates the first connecting disk 23a alone can the resistance part 21b2 retract.

[0035] like Figure 6 As shown, the limiting portion 21b includes a spring 21b1 disposed in the receiving groove 21a1, and one end of the spring 21b1 is connected to the resisting portion 21b2. When there is no external force, the end of the resisting portion 21b2 moves outward from the receiving groove 21a1 along with the elastic displacement of the spring 21b1, and plugs into the insertion opening 23d. When the resisting portion 21b2 is pressed by an external force, the resisting portion 21b2 squeezes the spring 21b1, so that the spring 21b1 moves into the receiving groove 21a1 and is received. When there is no external force, the spring 21b1 pops out under the elastic reset of the spring 21b1, and forms the elastic movement mentioned above.

[0036] like Figure 3As shown, exemplarily, the cavity 24a passes through the threaded rod 24, the second conductive structure includes a wire bundle passing through the cavity 24a to the bottom of the second connecting plate 23b, and a conductive copper sheet embedded in the bottom of the second connecting plate 23b, the conductive copper sheet is soldered to the wire bundle, one side of the conductive copper sheet extends into the cavity, the limit rod 21a is inserted into the cavity, the conductive wire composed of the first conductive structure 30 in the limit rod 21a is in contact with the conductive copper sheet in the second conductive structure 40, and power is supplied to the spotlight body 10. The rod body 21, the connecting tube 23 and the threaded rod 24 constituting the connecting rod 20 are separated by the first conductive structure 30 and the second conductive structure 40, so that they become independent individuals. When the spotlight body 10 needs to be replaced, the threaded rod 24 is connected to the spotlight box. If the spotlight box is not damaged, it does not need to be disassembled. The user pinches the outer disc body of the first connecting disc 23a with one hand and twists it, and holds the rod body 21 with the other hand so that it does not rotate with the first connecting disc 23a, so that the second connecting disc 23a squeezes the abutment part 21b2 through the side edge at the first insertion opening 23d1, so that the abutment part 21b2 squeezes the spring 21b1 and shrinks into the storage groove 21a1, and then the user pulls the rod body 21 to separate it from the connecting tube 23. At this time, the first conductive structure 30 on the rod body 21 is energized due to the contact with the conductive copper plate embedded in the bottom of the second connection plate 23b. When it is pulled out, it will not affect the second conductive structure 40. The user can replace the spotlight body 10 normally at this time, and reinsert the replaced spotlight body 10 into the connecting tube 23 through the rod body 21 for power connection. When the spotlight box is damaged, the threaded rod 24 is taken out from the spotlight box and installed on a new spotlight box. The wire bundle in the second conductive structure 40 on the threaded rod 24 is connected to the circuit board in the spotlight box for power supply. Compared with the existing spotlights, the spotlight proposed in this application is simpler to splice and more convenient to replace in case of failure or damage.

[0037] The spotlight body 10 comprises a protective cover 11 , a lens bracket 12 and a lamp holder 13 . The lens bracket 12 is sleeved on the lamp holder 13 and the protective cover 11 is sleeved on the lamp holder 13 and the lens bracket 12 .

[0038] A connecting groove 14 is formed at the bottom of the lamp holder 13 and the protective cover 11 , and the rod 21 is inserted into the connecting groove 14 .

[0039] Threaded openings penetrating the lamp holder 13 and the rod body 21 are provided on both sides of the connection groove 14 , and the rod body 21 is connected to the lamp holder 13 by screws 22 inserted into the threaded openings.

[0040] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A spotlight capable of swinging up and down by 90 degrees, comprising a connecting rod (20) and a spotlight body (10), wherein one end of the connecting rod (20) is connected to a spotlight box, and the other end is swingably connected to the spotlight body (10), characterized in that: The connecting rod (20) comprises a rod body (21) and a threaded rod (24); the rod body (21) is detachably connected to the threaded rod (24) via a connecting tube (23); when the rod body (21) and the threaded rod (24) are plugged into each other, a first conductive structure (30) in the rod body (21) and a second conductive structure (40) in the threaded rod (24) are in contact and conduction.

2. A spotlight capable of swinging up and down 90 degrees according to claim 1, characterized in that: A limiting rod (21a) is provided at the butt end of the rod body (21) and the connecting tube (23); one end of the first conductive structure (30) protrudes from the plug-in end of the limiting rod (21a) and is aligned with the second conductive structure (40); a receiving groove (21a1) is provided on the limiting rod (21a); ​​and a limiting portion (21b) capable of elastic displacement is provided on the receiving groove (21a1); when the rod body (21) rotates until the limiting portion (21b) is opposite to the insertion opening (23d) on the connecting tube (23), the limiting portion (21b) pops out of the insertion opening (23d) and connects with the inner wall of the threaded rod (24); when the connecting tube (23) rotates, the limiting portion (21b) retracts into the connecting hole, so that the rod body (21), the connecting tube (23) and the threaded rod (24) can be separated from each other.

3. A spotlight capable of swinging up and down 90 degrees according to claim 2, characterized in that: One end of the connecting tube (23) has a cavity opening toward the limiting rod, the limiting rod (21a) is inserted into the cavity, the threaded rod (24) has a cavity (24a), and the connecting tube (23) is inserted into the cavity (24a).

4. A spotlight capable of swinging up and down by 90 degrees according to claim 3, characterized in that: The connecting tube (23) comprises a first connecting disk (23a) and a second connecting disk (23b), wherein the second connecting disk (23b) is provided with a guide groove (23c), the first connecting disk (23a) is inserted into the guide groove (23c), and the guide groove (23c) and the first connecting disk (23a) are connected via a slider (23c1) and a slide groove (23c2).

5. The spotlight capable of swinging up and down by 90 degrees according to claim 4, characterized in that: The insertion opening (23d) comprises a first insertion opening (23d1), a second insertion opening (23d2) and a third insertion opening (23d3); the first insertion opening (23d1) is arranged on the first connecting disk (23a); the second insertion opening (23d2) is arranged on the second connecting disk (23b); the third insertion opening (23d3) is arranged on the inner wall of the cavity (24a); the rod body (21) is plugged into the connecting tube (23) so that the limiting portion (21b) passes through the first insertion opening (23d1) and the second insertion opening (23d2) to the third insertion opening (23d3).

6. The spotlight capable of swinging up and down by 90 degrees according to claim 5, characterized in that: The limiting portion (21b) comprises a spring (21b1) disposed in the receiving groove (21a1), one end of the spring (21b1) being connected to a resisting portion (21b2), and when there is no external force pressing, the end of the resisting portion (21b2) moves outward from the receiving groove (21a1) along with the elastic displacement of the spring (21b1) and is plugged into the insertion opening (23d).

7. The spotlight capable of swinging up and down by 90 degrees according to claim 6, characterized in that: A limiting groove (21b3) is provided on the side of the abutting portion (21b2), and when the rod body (21) or the first connecting disk (23a) rotates, the side edge of the first connecting disk (23a) or the second connecting disk (23b) can be plugged into the limiting groove (21b3).

8. The spotlight capable of swinging up and down by 90 degrees according to claim 5, characterized in that: The cavity (24a) passes through the threaded rod (24); the second conductive structure comprises a wire bundle passing through the cavity (24a) to the bottom of the second connecting plate (23b), and a conductive copper sheet embedded in the bottom of the second connecting plate (23b); the conductive copper sheet is soldered to the wire bundle, and one side of the conductive copper sheet extends into the cavity; the conductive wire composed of the first conductive structure (30) in the limiting rod (21a) contacts and electrically connects with the conductive copper sheet in the second conductive structure (40), and supplies power to the spotlight body (10).

9. The spotlight capable of swinging up and down by 90 degrees according to claim 1, characterized in that: The spotlight body (10) comprises a protective cover (11), a lens bracket (12) and a lamp holder (13); the lens bracket (12) is sleeved on the lamp holder (13) and the periphery of the lamp; the protective cover (11) is sleeved on the lamp holder (13) and the lens bracket (12).

10. The spotlight capable of swinging up and down by 90 degrees according to claim 9, characterized in that: The lamp holder (13) and the protective cover (11) are provided with a connecting groove (14) at the bottom, the rod body (21) is inserted into the connecting groove (14), and the rod body (21) is connected to the lamp holder (13) through threaded openings on both sides of the connecting groove (14) and screws (22) in the threaded openings.

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