Lamp capable of locking lamp holder by using scaling assembly

Abstract

The lamp comprises the lamp cap used for emitting light and a supporting base for supporting the lamp cap to rotate, the lamp cap and the supporting base are in matched pivot joint through a pivot joint shaft and a shaft sleeve, the pivot joint shaft is sleeved with the shaft sleeve, the lamp further comprises the scaling assembly, and the scaling assembly is provided with a deformation piece and an operation piece. The operating piece acts on the deformation piece in the length direction of the pivot joint shaft, so that after the deformation piece deforms in the direction perpendicular to the length direction of the pivot joint shaft, the abutting part acts on the shaft sleeve or the pivot joint shaft to limit relative rotation of the shaft sleeve or the pivot joint shaft. The deformation piece converts stress in the length direction of the pivot joint shaft into acting force perpendicular to the length direction of the pivot joint shaft through deformation, the acting force acts on the shaft sleeve or the pivot joint shaft, modification of an existing structure can be reduced as much as possible, the existing pivot joint shaft and the shaft sleeve are directly used for limiting rotation of the lamp holder, and stepless locking is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of lamps, and more specifically, to a lamp using a scaling component to lock a lamp head. Background Art

[0002] A lamp generally includes a lamp head for emitting light and a support base for supporting the rotation of the lamp head. The rotation angle of the lamp head relative to the support base can be adjusted manually or electrically using a motor. However, during a performance, the lamp head is often fixed at a specific angle for use. If the motor is continuously used to maintain the position, it will waste electricity. Therefore, generally, a locking component is used to lock the lamp head. And different performances require different specific angles. In the prior art, generally, a lock tongue selectively cooperates with multiple lock positions on a lock disc to selectively fix the lamp head at multiple specific angles. However, this method cannot fix the lamp head at any angle to achieve stepless locking. Summary of the Invention

[0003] To overcome at least one of the above-mentioned defects of the prior art, the present invention provides a lamp using a scaling component to lock a lamp head. The deformable member interferes with the pivot shaft or the bushing to restrict the relative rotation between the two, thereby achieving stepless locking.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: A lamp using a scaling component to lock a lamp head includes a lamp head for emitting light and a support base for supporting the rotation of the lamp head. The lamp head and the support base are pivotally connected through the cooperation of a pivot shaft and a bushing. The bushing is sleeved outside the pivot shaft. The lamp further includes a scaling component, and the scaling component has a deformable member and an operating member. The operating member acts on the deformable member in the length direction of the pivot shaft, so that after the deformable member deforms in a direction perpendicular to the length of the pivot shaft, the abutting portion acts on the bushing or the pivot shaft to restrict the relative rotation between the two.

[0005] For the lamp using a scaling component to lock a lamp head, when the lamp head is at any angle relative to the support base, the operating member can apply a force to the deformable member in the length direction of the pivot shaft, so that after the deformable member deforms in a direction perpendicular to the length of the pivot shaft, the abutting portion acts on the bushing or the pivot shaft to restrict the relative rotation between the two, and finally achieve stepless locking of the lamp head. The deformable member converts the force in the length direction of the pivot shaft into a force perpendicular to the length of the pivot shaft through deformation and acts on the bushing or the pivot shaft, which can minimize the modification of the existing structure and directly utilize the existing pivot shaft and bushing to restrict the rotation of the lamp head to achieve stepless locking.

[0006] Furthermore, the deformable member includes a rigid connecting plate and a rigid inclined plate connected to each other. The operating member applies a force to the deformable member to change the included angle between the inclined plate and the connecting plate, so that the abutting portion moves. Both the connecting plate and the inclined plate are rigid, and the deformation of the deformable member is achieved by changing the included angle between the inclined plate and the connecting plate, rather than relying on an elastic material. Therefore, the deformable member can withstand greater external forces and has better durability.

[0007] Furthermore, the end of the inclined plate away from the connecting plate serves as the abutting portion. The operating member acts on the connecting plate to move the abutting portion in a direction perpendicular to the length of the pivot shaft. Since it is necessary to ensure that the included angle between the inclined plate and the pivot shaft direction is as large as possible to better amplify and transmit the force of the operating member to the bushing or the pivot shaft, the operating member acts on the connecting plate, and the end of the inclined plate away from the connecting plate serves as the abutting portion, which can keep the included angle between the inclined plate and the connecting plate within a large range, thus avoiding metal fatigue that may be caused by excessive bending.

[0008] Furthermore, the operating member is a pull rod extending along the length direction of the pivot shaft. The pull rod moves along the length direction of the pivot shaft, thereby driving a change in the included angle between the inclined plate and the connecting plate.

[0009] Furthermore, the pull rod is threadedly connected with a nut. The pull rod rotates relative to the nut, so that the abutting portion on the pull rod or the nut squeezes the deformable member to cause deformation. Through the nut, the rotation of the pull rod relative to the nut can be converted into a movement along the length direction of the pivot shaft, which is more convenient for applying force and can increase the torque, enabling the pull rod to move along the length direction of the pivot shaft with a smaller torsion force.

[0010] Furthermore, an additional seat is further included. The additional seat has a through hole for the pull rod to extend into. The abutting protrusion passes through the through hole to abut against one side of the deformable member, and the nut abuts against the other side of the deformable member. The deformable member is clamped between the nut and the abutting protrusion and deforms under force.

[0011] Furthermore, a limiting post is further included to limit the included angle between the connecting plate and the inclined plate from exceeding a predetermined range. The length of the limiting post is designed as required and abuts against the connecting plate when it approaches to limit its further movement.

[0012] Further, at least two of the inclined plates are circumferentially connected to the connecting plate. The two deformable members are arranged oppositely, and the connecting plates face away from each other. The ends of the inclined plates abut against each other. At least two connected inclined plates are stressed together, with stronger bearing capacity, and can avoid the fracture problem at the connection between a single inclined plate and the connecting plate due to reasons such as metal fatigue.

[0013] Further, the ends of the inclined plates of the two deformable members that abut against each other are jointly sleeved in a fixing sleeve. The fixing sleeve can connect the ends of the two inclined plates that abut against each other into a whole and move forward and backward together, avoiding slipping when abutting.

[0014] Further, a friction plate is arranged on the abutting portion. The friction plate can increase the friction force.

[0015] Further, the bushing is connected to the lamp head, and the pivot shaft is connected to the support base. That is, the bushing rotates with the lamp head, and the pivot shaft remains stationary with the support base.

[0016] Further, the deformable member and the operating member are installed on the pivot shaft. When the lamp head rotates, if the deformable member and the operating member are not operated, they both remain stationary with the support base and will not rotate, providing a better user experience.

[0017] Further, a receiving cavity for receiving the deformable member is arranged on the pivot shaft, and a hollow hole for the abutting portion to extend out is arranged on the cavity wall of the receiving cavity. The receiving cavity can hide the deformable member, and the hollow hole can ensure that the abutting portion of the deformable member can extend out smoothly to abut against the bushing for cooperation.

[0018] Further, an avoidance hole is arranged at the bottom of the receiving cavity corresponding to the operating member. The avoidance hole provides more space for the movement of the operating member, so that it does not protrude from the pivot shaft too much.

[0019] Further, an additional seat is detachably connected to the pivot shaft, and the receiving cavity is located in the additional seat. The additional seat can install and accommodate the deformable member without changing the original pivot shaft as much as possible.

[0020] Further, the middle part of the outer side of the additional seat along the length direction of the pivot shaft has an expansion part, the hollow hole is located in the expansion part, bearings are sleeved at both ends of the expansion part, the expansion part abuts against the inner ring of the bearing, and the outer ring of the bearing abuts against the shaft sleeve or a pressing plate connected to the shaft sleeve. On the one hand, the expansion part can support the inner ring of the bearing, and on the other hand, it can provide a larger space, so that the deformable part can be made larger, thereby generating a longer moment and amplifying the acting force of the operating part. Description of the Drawings

[0021] Figure 1 is the overall structural schematic diagram of the lamp using the scaling component to lock the lamp head of the present invention.

[0022] Figure 2 is the cross-sectional structural schematic diagram of the lamp using the scaling component to lock the lamp head of the present invention.

[0023] Figure 3 is Figure 2 the partial enlarged view in

[0024] Figure 4 is the matching structural schematic diagram of the scaling component, pivot shaft and shaft sleeve of the present invention.

[0025] Figure 5 is the cross-sectional structural schematic diagram after the scaling component, pivot shaft and shaft sleeve of the present invention are combined.

[0026] In the figure: 110, lamp head; 120, support seat; 121, chassis; 122, support arm; 200, pivot shaft; 210, additional seat; 211, accommodation cavity; 212, hollow hole; 213, through hole; 214, avoidance hole; 215 expansion part; 220, bearing; 221, pressing plate; 300, shaft sleeve; 400, operating part; 410, abutting protrusion; 420, nut; 430, knob; 500, deformable part; 510, connecting plate; 520, inclined plate; 521, abutting part; 530, bending piece; 540, limiting post; 550, fixed sleeve; 551, open end; 552, accommodation groove; 560, friction plate. Detailed Embodiments

[0027] The drawings are only for illustrative purposes and should not be construed as a limitation of this patent; for better illustration of this embodiment, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and should not be construed as a limitation of this patent.

[0028] Such as Figures 1 to 5, the present invention provides a lighting fixture using a scaling component to lock a lamp head, which includes a lamp head 110 for emitting light and a support base 120 for supporting the rotation of the lamp head 110. The lamp head 110 and the support base 120 are pivotally connected through the cooperation of a pivot shaft 200 and a bushing 300. The bushing 300 is sleeved outside the pivot shaft 200. It further includes a scaling component, which has a deformable member 500 and an operating member 400. The operating member 400 acts on the deformable member 500 in the length direction of the pivot shaft 200, so that after the deformable member 500 deforms in a direction perpendicular to the length of the pivot shaft 200, the abutting portion 521 acts on the bushing 300 or the pivot shaft 200 to limit the relative rotation between the two.

[0029] For the lighting fixture using a scaling component to lock the lamp head, when the lamp head 110 is at any angle relative to the support base 120, the operating member 400 can apply a force to the deformable member 500 in the length direction of the pivot shaft 200, so that after the deformable member 500 deforms in a direction perpendicular to the length of the pivot shaft 200, the abutting portion 521 acts on the bushing 300 or the pivot shaft 200 to limit the relative rotation between the two, and finally realize the stepless locking of the lamp head 110. The deformable member 500 converts the force in the length direction of the pivot shaft 200 into a force perpendicular to the length direction of the pivot shaft 200 through deformation and acts on the bushing 300 or the pivot shaft 200, which can minimize the modification of the existing structure and directly utilize the existing pivot shaft 200 and bushing 300 to realize the limitation of the rotation of the lamp head 110 and achieve stepless locking.

[0030] In this embodiment, the support base 120 includes a chassis 121 and a support arm 122 fixedly connected to the chassis 121. The lamp head 110 is pivotally connected to the support arm 122. In other embodiments, the support base 120 may also include a chassis 121 and a support arm 122 pivotally connected to the chassis 121, and the lamp head 110 is pivotally connected to the support arm 122.

[0031] In a preferred embodiment of the present invention, the deformable member 500 includes a rigid connecting plate 510 and a rigid inclined plate 520 connected to each other. The operating member 400 applies a force to the deformable member 500 to change the angle between the inclined plate 520 and the connecting plate 510, so that the abutting portion 521 moves. Both the connecting plate 510 and the inclined plate 520 are rigid, and the deformation of the deformable member 500 is achieved by changing the angle between the inclined plate 520 and the connecting plate 510, rather than relying on elastic materials. Therefore, the deformable member 500 can withstand greater external forces and has better durability.

[0032] Optionally, the deformable member 500 can be deformed such that the end of the inclined plate 520 away from the connecting plate 510 acts on the bushing 300 or the pivot shaft 200, that is, the end of the inclined plate 520 away from the connecting plate 510 is used as the abutting portion 521, or it can be deformed such that the connecting plate 510 acts on the bushing 300 or the pivot shaft 200, that is, the connecting plate 510 is used as the abutting portion 521 (in this case, the operating member 400 acts on the inclined plate 520).

[0033] Optionally, the connecting plate 510 and the inclined plate 520 are respectively connected with bending pieces 530 to strengthen their respective strengths.

[0034] In a preferred embodiment of the present invention, the end of the inclined plate 520 away from the connecting plate 510 is used as the abutting portion 521, and the operating member 400 acts on the connecting plate 510 to move the abutting portion 521 in a direction perpendicular to the length of the pivot shaft 200. Since it is necessary to ensure that the angle between the inclined plate 520 and the direction of the pivot shaft 200 is as large as possible to better amplify the force of the operating member 400 and transmit it to the bushing 300 or the pivot shaft 200, so the operating member 400 acts on the connecting plate 510, and the end of the inclined plate 520 away from the connecting plate 510 is used as the abutting portion 521, which can keep the angle between the inclined plate 520 and the connecting plate 510 within a large range, thereby avoiding metal fatigue that may be caused by excessive bending.

[0035] Preferably, the angle between the inclined plate 520 and the connecting plate 510 is greater than 120 degrees, and preferably greater than 150 degrees.

[0036] In a preferred embodiment of the present invention, the operating member 400 is a pull rod extending along the length direction of the pivot shaft 200. The pull rod moves along the length direction of the pivot shaft 200, thereby driving the change of the angle between the inclined plate 520 and the connecting plate 510.

[0037] In a preferred embodiment of the present invention, the pull rod is threadedly connected with a nut 420, and the pull rod rotates relative to the nut 420 so that the abutting protrusion 410 on the pull rod or the nut 420 squeezes the deformable member 500 to generate deformation. Through the nut 420, the rotation of the pull rod relative to the nut 420 can be converted into the movement along the length direction of the pivot shaft 200, which is more convenient for applying force and can increase the torque, so that the pull rod can be moved along the length direction of the pivot shaft 200 with a smaller torque.

[0038] Preferably, a knob 430 is connected to one end of the pull rod away from the nut 420, which is convenient for rotating the pull rod.

[0039] Preferably, the diameter of the threaded connection between the pull rod and the nut 420 is less than 1.5 cm, preferably less than 1 cm, so as to increase the distance between the pull rod and the abutting portion 521, thereby increasing the torque and amplifying the self-acting force as much as possible.

[0040] Preferably, on the premise that rotating the pull rod can make it move significantly along the length direction of the pivot shaft 200, the smaller the pitch of the thread of the pull rod is, the better, so that the rotation of the pull rod will be easier.

[0041] In a preferred embodiment of the present invention, it further includes an additional seat 210. The additional seat 210 has a through hole 213 for the pull rod to extend into. The abutting protrusion 410 passes through the through hole 213 to abut one side of the deformable member 500, and the nut 420 abuts the other side of the deformable member 500. The deformable member 500 is clamped between the nut 420 and the abutting protrusion 410 and is deformed under force.

[0042] In a preferred embodiment of the present invention, it further includes a limit post 540 for limiting the angle between the connecting plate 510 and the inclined plate 520 from exceeding a predetermined range. The length of the limit post 540 is designed according to needs and abuts against the connecting plate 510 when it approaches to limit its further movement.

[0043] Preferably, the length of the limit post 540 is greater than 0.5 cm.

[0044] Preferably, the pull rod penetrates along the length direction of the limit post 540 and is then connected to the nut 420.

[0045] In a preferred embodiment of the present invention, the connecting plate 510 is circumferentially connected with at least 2 inclined plates 520. The 2 deformable members 500 are arranged oppositely, and the connecting plates 510 face away from each other, and the ends of the inclined plates 520 abut against each other. At least 2 connected inclined plates 520 are stressed together, with stronger bearing capacity, and can avoid the fracture problem caused by metal fatigue or the like at the connection between a single inclined plate 520 and the connecting plate 510.

[0046] Preferably, the limit post 540 is arranged between the connecting plates 510 of the 2 oppositely arranged deformable members 500. When the operating member 400 is a pull rod extending along the length direction of the pivot shaft 200, the pull rod passes through the limit post 540 and the 2 connecting plates 510 at the same time and is then threadedly connected to the nut 420. At this time, the length of the limit post 540 is greater than 1 cm.

[0047] Preferably, the connecting plate 510 is circumferentially and evenly connected with 4 inclined plates 520.

[0048] In a preferred embodiment of the present invention, the ends of the inclined plates 520 of the two deformable members 500 that abut against each other are jointly sleeved in a fixing sleeve 550. The fixing sleeve 550 can link the ends of the two inclined plates 520 that abut against each other into a whole, advancing and retreating together, and preventing slippage when abutting.

[0049] Optionally, the deformable member 500 can abut against the bushing 300 or the pivot shaft 200 by using the fixing sleeve 550, or can also abut against the bushing 300 or the pivot shaft 200 by using the connecting plate 510.

[0050] Preferably, the fixing sleeve 550 is in a cylindrical shape, sealed at one end and open at the other end, and the open end 551 accommodates the ends of the inclined plates 520 that abut against each other. In a preferred embodiment of the present invention, a friction plate 560 is provided on the abutting portion 521. The friction plate 560 can increase the frictional force.

[0051] Preferably, the friction plate 560 is provided on the side of the fixing sleeve 550 away from the deformable member 500, and the fixing sleeve 550 is provided with a receiving groove 552 corresponding to the friction plate 560.

[0052] In a preferred embodiment of the present invention, the bushing 300 is connected to the lamp head 110, and the pivot shaft 200 is connected to the support base 120. That is, the bushing 300 rotates with the lamp head 110, and the pivot shaft 200 remains stationary with the support base 120.

[0053] In other embodiments, it can also be that the bushing 300 is connected to the support base 120, and the pivot shaft 200 is connected to the lamp head 110. In a preferred embodiment of the present invention, the deformable member 500 and the operating member 400 are installed on the pivot shaft 200. When the lamp head 110 rotates, if the deformable member 500 and the operating member 400 are not operated, they will all remain stationary with the support base 120 and will not rotate, providing a better user experience.

[0054] In this embodiment, the nut 420 threadedly connected to the pull rod is fixed to the pivot shaft 200.

[0055] In other embodiments, it can also be that the deformable member 500 and the operating member 400 are installed on the bushing 300.

[0056] In a preferred embodiment of the present invention, a receiving cavity 211 for receiving the deformable member 500 is provided on the pivot shaft 200, and a hollow hole 212 for the abutting portion 521 to extend out is provided on the cavity wall of the receiving cavity 211. The receiving cavity 211 can hide the deformable member 500, and the hollow hole 212 can ensure that the abutting portion 521 of the deformable member 500 can extend out smoothly to cooperate with the abutting of the sleeve 300.

[0057] In a preferred embodiment of the present invention, an avoidance hole 214 is provided at the bottom of the receiving cavity 211 corresponding to the operating member 400. The avoidance hole 214 provides more space for the movement of the operating member 400, so that it does not protrude from the pivot shaft 200 too much.

[0058] In a preferred embodiment of the present invention, an additional seat 210 is detachably connected to the pivot shaft 200, and the receiving cavity 211 is located in the additional seat 210. The additional seat 210 can install and receive the deformable member 500 on the premise of not changing the original pivot shaft 200 as much as possible.

[0059] In this embodiment, one end of the additional seat 210 connected to the pivot shaft 200 is open, and the deformable member 500 enters the receiving cavity 211 from here. The other end of the additional seat 210 is sealed, and only has a through hole 213 for the pull rod to extend into.

[0060] In a preferred embodiment of the present invention, the middle part of the outer side of the additional seat 210 along the length direction of the pivot shaft 200 has an expansion part 215. The hollow hole 212 is located in the expansion part 215. Bearings 220 are sleeved at both ends of the expansion part 215. The expansion part 215 abuts against the inner ring of the bearing 220, and the outer ring of the bearing 220 abuts against the sleeve 300 or a pressing plate 221 connected to the sleeve 300. On the one hand, the expansion part 215 can support the inner ring of the bearing 220, and on the other hand, it can provide more space, so that the deformable member 500 can be made larger, thereby generating a longer moment and amplifying the acting force of the operating member 400.

[0061] In the present invention, by using the threaded connection between the pull rod and the nut 420, a knob 430 is connected to one end of the pull rod away from the nut 420, and the diameter of the threaded connection between the pull rod and the nut 420 is less than 1.5 cm. On the premise that rotating the pull rod can make it move significantly along the length direction of the pivot shaft 200, the smaller the pitch of the thread of the pull rod is, the better. The included angle between the inclined plate 520 and the connecting plate 510 is greater than 120 degrees, and the end of the inclined plate 520 away from the connecting plate 510 serves as the abutting portion 521. The operating member 400 acts on the connecting plate 510 to make the abutting portion 521 move in the direction perpendicular to the length of the pivot shaft 200. In this way, the operating member 400 and the deformable member 500 can amplify the force applied by the user to the knob 430 to the maximum extent at each step, and gradually act on the bushing 300 or the pivot shaft 200, so as to lock the lamp head 110 at any angle without using external tools and achieve stepless adjustment.

[0062] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A lighting fixture using a scaling component to lock a lamp head, characterized in that, It includes a lamp head (110) for emitting light and a support base (120) for supporting the rotation of the lamp head (110). The lamp head (110) and the support base (120) are pivotally connected through the cooperation of a pivot shaft (200) and a bushing (300). The bushing (300) is sleeved outside the pivot shaft (200). It also includes a scaling component, which has a deformable member (500) and an operating member (400). The deformable member (500) is a rigid elastic sheet. The operating member (400) acts on the deformable member (500) in the length direction of the pivot shaft (200), so that after the deformable member (500) deforms in the direction perpendicular to the length of the pivot shaft (200), the abutting portion (521) acts on the bushing (300) or the pivot shaft (200) to limit the relative rotation of the two.

2. The luminaire using a scaling component to lock the lamp cap according to claim 1, wherein, The deformable member (500) includes a rigid connecting plate (510) and a rigid inclined plate (520) which are connected to each other. The operating member (400) applies a force to the deformable member (500) to change the angle between the inclined plate (520) and the connecting plate (510), so that the abutting portion (521) moves.

3. The lighting fixture using a scaling component to lock a lamp holder according to claim 2, characterized in that, The end of the inclined plate (520) away from the connecting plate (510) serves as the abutting portion (521). The operating member (400) acts on the connecting plate (510) to move the abutting portion (521) in the direction perpendicular to the length of the pivot shaft (200).

4. The luminaire using a scaling component to lock a lamp cap according to claim 2 or 3, characterized in that The operating member (400) is a pull rod extending in the length direction of the pivot shaft (200).

5. The luminaire using a scaling component to lock a lamp holder according to claim 4, wherein, The pull rod is threadedly connected with a nut (420). The pull rod rotates relative to the nut (420) so that the abutting protrusion (410) on the pull rod or the nut (420) squeezes the deformable member (500) to generate deformation.

6. The luminaire using a scaling component to lock the lamp cap according to claim 5, characterized in that, It also includes an additional seat (210). The additional seat (210) has a through hole (213) for the pull rod to extend into. The abutting protrusion (410) passes through the through hole (213) to abut against one side of the deformable member (500), and the nut (420) abuts against the other side of the deformable member (500). The deformable member (500) is clamped between the nut (420) and the abutting protrusion (410) and is deformed by force.

7. The luminaire using a scaling component to lock the lamp cap according to claim 2 or 3, characterized in that It also includes a limit post (540) for limiting the angle between the connecting plate (510) and the inclined plate (520) from exceeding a predetermined range.

8. The luminaire using a scaling component to lock the lamp head according to claim 2 or 3, characterized in that, The connecting plate (510) is circumferentially connected with at least 2 inclined plates (520). The 2 deformable members (500) are arranged oppositely, and the connecting plates (510) face away from each other, and the ends of the inclined plates (520) abut against each other.

9. The luminaire using a scaling component to lock a lamp cap according to claim 8, characterized in that, The ends of the inclined plates (520) of the 2 deformable members (500) that abut against each other are jointly sleeved in a fixing sleeve (550).

10. The luminaire using a scaling component to lock a lamp cap according to claim 1, wherein, The abutting portion (521) is provided with a friction plate (560).

11. The lighting fixture using a scaling component to lock the lamp cap according to claim 1, wherein, The bushing (300) is connected to the lamp head (110), and the pivot shaft (200) is connected to the support base (120).

12. The luminaire using a scaling component to lock a lamp cap according to claim 11, wherein The deformable member (500) and the operating member (400) are mounted on the pivot shaft (200).

13. The luminaire using a scaling component to lock a lamp cap according to claim 12, characterized in that, A receiving cavity (211) for receiving the deformable member (500) is provided on the pivot shaft (200), and a hollow hole (212) through which the abutting portion (521) extends is provided on the cavity wall of the receiving cavity (211).

14. The luminaire using a scaling component to lock a lamp holder according to claim 13, characterized in that, A relief hole (214) corresponding to the operating member (400) is provided at the bottom of the receiving cavity (211).

15. The lighting fixture using a scaling component to lock a lamp cap according to claim 13, wherein An additional seat (210) is detachably connected to the pivot shaft (200), and the receiving cavity (211) is located in the additional seat (210).

16. The lighting fixture using a scaling component to lock a lamp cap according to claim 15, wherein, The middle part of the outer side of the additional seat (210) along the length direction of the pivot shaft (200) has an expansion portion (215), the hollow hole (212) is located in the expansion portion (215), bearings (220) are sleeved at both ends of the expansion portion (215), the expansion portion (215) abuts against the inner ring of the bearings (220), and the outer ring of the bearings (220) abuts against the bushing (300) or a pressure plate (221) connected to the bushing (300).

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