CN220961803U - Lighting device - Google Patents

Abstract

The utility model relates to the technical field of display, and particularly discloses a lighting device. The lighting device comprises a supporting seat, a spacing adjusting mechanism and at least two connecting golden fingers, wherein the at least two connecting golden fingers are distributed at intervals along the length direction of the supporting seat; each connecting golden finger corresponds to one interval adjusting mechanism, each interval adjusting mechanism comprises a first knob and a transmission assembly, two ends of the transmission assembly are respectively connected with one end of the first knob and one end of the corresponding connecting golden finger, and the transmission assembly is configured to convert the rotary motion of the first knob into linear motion of the connecting golden finger along the length direction of the supporting seat. The lighting device is high in universality, can be suitable for lighting test of the lamp bars with different spacing for detecting golden fingers, reduces test cost, can realize the adjustment of the spacing between the connecting golden fingers by only needing simple screwing action by an operator, and is convenient to operate and high in adjustment efficiency.

Description

Lighting device

Technical Field

The utility model relates to the technical field of display, in particular to a lighting device.

Background

A plurality of test links are arranged in the production process of the display device to ensure the quality of the lamp strip, the product quality is improved, and the lighting test is a common test link.

The light bar generally includes an FPC board and an LED lamp mounted on the FPC board. When the lighting test is performed, the golden finger on the FPC needs to be electrically connected with the golden finger for the test so as to light the LED lamp on the FPC, and the prior art is generally connected in the following two ways: 1) One end of the bonding wire is welded on the golden finger of the FPC, and the other end of the bonding wire is connected with the power supply, but after the testing is finished, the bonding wire is required to be detached from the FPC, and the golden finger on the FPC is easily damaged in the detaching process, so that the product quality is affected; 2) The special clamping heads are used, but the existing clamping heads are only suitable for the lamp strip with the golden fingers with fixed quantity and fixed spacing, the universality is poor, a plurality of clamping heads with different specifications are needed to be prepared during testing, and the testing cost is high.

Therefore, it is necessary to provide a lighting device to solve the above-mentioned problems.

Disclosure of utility model

The utility model aims to provide a lighting device which has strong universality, can avoid damage to golden fingers on an FPC and can reduce test cost.

The technical scheme adopted by the utility model is as follows:

A lighting device comprising:

A support base;

At least two connecting golden fingers are arranged at intervals along the length direction of the supporting seat;

Each connecting golden finger corresponds to one spacing adjusting mechanism, each spacing adjusting mechanism comprises a first knob and a transmission assembly, two ends of the transmission assembly are respectively connected with the first knob and the corresponding connecting golden finger, and the transmission assembly is configured to convert the rotary motion of the first knob into the linear motion of the connecting golden finger along the length direction of the supporting seat.

As a preferable scheme of the lighting device provided by the utility model, the interval adjusting mechanism further comprises an adjusting seat arranged on the supporting seat; the transmission assembly includes:

One end of the connecting rod is rotatably arranged on the supporting seat, and the other end of the connecting rod is connected with the first knob;

The transmission gear is sleeved on the connecting rod;

The sliding block is arranged on the adjusting seat in a sliding manner, meshing teeth capable of meshing with the transmission gear are arranged on the sliding block, and the sliding block is connected with the corresponding connecting golden finger.

As a preferable mode of the lighting device provided by the utility model, the lighting device further comprises an integral adjusting mechanism, the integral adjusting mechanism is arranged on the supporting seat, and the integral adjusting mechanism is configured to drive the adjusting seat to slide along the length direction of the supporting seat.

As a preferable scheme of the lighting device provided by the utility model, the adjusting seat is internally provided with the internal threaded hole, the integral adjusting mechanism comprises an adjusting screw rod, the adjusting screw rod extends along the length direction of the supporting seat and is rotationally arranged on the supporting seat, and the adjusting screw rod is screwed in the internal threaded hole of the adjusting seat.

In one preferable embodiment of the lighting device provided by the utility model, the engagement teeth are located at an upper portion of the sliding block, and the connecting rod is provided on the supporting base in a liftable manner, and has an engagement position for engaging the engagement teeth with the transmission gear and a separation position for separating the engagement teeth from the transmission gear.

As a preferable scheme of the lighting device provided by the utility model, the connecting golden finger is detachably connected to the corresponding transmission assembly.

As a preferable scheme of the lighting device provided by the utility model, each connecting golden finger comprises a connecting end and an adjusting end, wherein the connecting end is used for connecting and detecting the golden finger, the adjusting end is connected with the transmission assembly, and the supporting seat is provided with a containing groove for containing the connecting end;

The lighting device further comprises a pressing plate, and the pressing plate can press the detection golden finger on the corresponding connecting end.

As a preferable mode of the lighting device provided by the utility model, one end of the pressing plate is rotatably connected to one side of the accommodating groove, and the other end is magnetically adsorbed to the other side of the accommodating groove.

As a preferable mode of the lighting device provided by the utility model, the lighting device further comprises an upper cover, wherein the upper cover is arranged above the supporting seat so as to partially shield the connecting golden finger and the interval adjusting mechanism.

As a preferable scheme of the lighting device provided by the utility model, one of the upper cover and the first knob is provided with a plurality of scale marks which are circularly arranged, and the other one is provided with an indicating needle.

The beneficial effects of the utility model are as follows:

The utility model provides a lighting device, which comprises a supporting seat, a spacing adjusting mechanism and at least two connecting golden fingers, wherein the at least two connecting golden fingers are distributed at intervals along the length direction of the supporting seat; each connecting golden finger corresponds to one interval adjusting mechanism, each interval adjusting mechanism comprises a first knob and a transmission assembly, two ends of the transmission assembly are respectively connected with one end of the first knob and one end of the corresponding connecting golden finger, and the transmission assembly is configured to convert the rotary motion of the first knob into linear motion of the connecting golden finger along the length direction of the supporting seat. During testing, an operator can adjust the distance between the connecting golden fingers by rotating the first knob according to the distance between the detecting golden fingers on the light bar to be detected, so that the distance between two adjacent detecting golden fingers is equal to the distance between two adjacent connecting golden fingers, and the lighting operation of the LED lamps on the FPC board is realized. The lighting device is high in universality, can be suitable for lighting test of the lamp bars with different spacing for detecting golden fingers, reduces test cost, can realize the adjustment of the spacing between the connecting golden fingers by only needing simple screwing action by an operator, and is convenient to operate and high in adjustment efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a lighting device according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a hidden upper cover of a lighting device according to an embodiment of the present utility model;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

Fig. 4 is a schematic structural diagram of a lighting device provided in an embodiment of the present utility model in a state where a pressing plate is opened;

Fig. 5 is a schematic cross-sectional view of the lighting device according to the embodiment of the present utility model under a viewing angle after the upper cover is removed;

Fig. 6 is a schematic cross-sectional view of the lighting device according to the embodiment of the present utility model under another view angle after the upper cover is removed;

fig. 7 is a partial enlarged view of fig. 5 at B.

In the figure:

1-a supporting seat; 11-a containing groove; 12-a second magnetic member; 13-mounting holes;

2-connecting a golden finger; 21-a connection terminal; 22-an adjustment end;

3-a spacing adjustment mechanism; 31-a first knob; 32-a transmission assembly; 321-connecting rods; 322-a transmission gear; 323-a slider; 3231-engaging teeth; 33-adjusting seat; 331-a first chute; 332-a second chute; 34-a reset member;

4-an integral adjusting mechanism; 41-adjusting a screw rod; 42-a second knob;

5-upper cover; 51-a fixed cover; 52-turning cover;

6-pressing plates; 61-first magnetic member.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The embodiment provides a lighting device, which is used for a lighting test link in the production process of a display device so as to detect whether the performances such as brightness, chromaticity and the like of an LED lamp meet the requirements.

Fig. 1 shows a schematic configuration of a lighting device according to the present embodiment. Fig. 2 is a schematic diagram showing a structure of a hidden upper cover 5 of the lighting device according to the present embodiment. Fig. 3 shows a partial enlargement of fig. 2 at a. As shown in fig. 1 to 3, specifically, the lighting device provided in this embodiment includes a support base 1, a spacing adjustment mechanism 3, and at least two connecting golden fingers 2, where the at least two connecting golden fingers 2 are arranged at intervals along the length direction of the support base 1; each connecting golden finger 2 corresponds to one spacing adjusting mechanism 3, the spacing adjusting mechanism 3 comprises a first knob 31 and a transmission assembly 32, two ends of the transmission assembly 32 are respectively connected with the first knob 31 and one end of the corresponding connecting golden finger 2, and the transmission assembly 32 is configured to convert the rotary motion of the first knob 31 into the linear motion of the connecting golden finger 2 along the length direction of the supporting seat 1.

The existing lamp strip generally comprises an FPC board and LED lamps arranged on the FPC board, and the distances between the detection golden fingers arranged on the lamp strips of different models are different. Therefore, before the lighting test, an operator can adjust the spacing between the connecting golden fingers 2 on the lighting device by rotating the first knob 31 according to the spacing between the detecting golden fingers on the light bar to be detected, so that the spacing between two adjacent connecting golden fingers 2 is equal to the spacing between two adjacent detecting golden fingers, and the lighting operation of the LED lamp on the FPC board is realized. The lighting device is high in universality, can be suitable for lighting test of the lamp bars with different spacing for detecting the golden fingers, reduces test cost, can realize the adjustment of the spacing between the connecting golden fingers 2 by only needing simple screwing action by an operator, and is convenient to operate and high in adjustment efficiency.

Further, the spacing adjusting mechanism 3 further comprises an adjusting seat 33 arranged on the supporting seat 1; the transmission assembly 32 comprises a connecting rod 321, a transmission gear 322 and a sliding block 323, one end of the connecting rod 321 is rotatably arranged on the supporting seat 1, and the other end is connected with the first knob 31; the transmission gear 322 is sleeved on the connecting rod 321; the sliding block 323 is slidably disposed on the adjusting seat 33, the sliding block 323 is provided with a meshing tooth 3231 capable of meshing with the transmission gear 322, and the sliding block 323 is connected with the corresponding connecting golden finger 2. When the operator rotates the first knob 31, the connecting rod 321 can be driven to rotate, and meanwhile, the transmission gear 322 sleeved on the connecting rod 321 is driven to rotate, so that the sliding block 323 drives the corresponding connecting golden finger 2 to slide on the supporting seat 1, and the adjustment of the distance between the two adjacent connecting golden fingers 2 is realized.

The adjustment seat 33 is provided with a first sliding groove 331 extending along the length direction of the support seat 1, and the sliding block 323 is provided with a first sliding member (not shown) slidably engaged with the first sliding groove 331. By providing the first sliding groove 331 and the first sliding member in sliding fit, guiding can be provided for the sliding of the sliding block 323, and smoothness of the sliding process of the sliding block 323 along the adjusting seat 33 can be ensured. Optionally, the number of the first sliding grooves 331 is two, the two first sliding grooves 331 are disposed on the adjusting seat 33 along the vertical direction at intervals, each sliding block 323 is provided with two first sliding pieces, and the two first sliding pieces correspond to the two first sliding grooves 331 one by one, so that the stability of the sliding process of the sliding blocks 323 is further ensured. Of course, in other embodiments, the number of the first sliding grooves 331 provided on the adjusting seat 33 can be adjusted according to actual needs, which is not limited in this embodiment.

The adjusting seat 33 is provided with a second sliding groove 332 extending along the length direction of the supporting seat 1, and the connecting golden finger 2 is provided with a second sliding piece (not shown in the figure) in sliding fit with the second sliding groove 332. By providing the second sliding groove 332 and the second sliding member which are in sliding fit, guidance can be provided for the sliding of the connecting golden finger 2, and smoothness of the sliding process of the connecting golden finger 2 along the adjusting seat 33 can be ensured.

It can be understood that the number of the detected golden fingers set on the light bars of different models may be different, in order to further improve the universality of the lighting device, in this embodiment, the connecting golden fingers 2 are detachably connected with the sliding block 323, and the design can facilitate the operator to adjust the number of the connecting golden fingers 2 according to the number of the detected golden fingers on the light bars to be detected, so that the connecting golden fingers 2 are in one-to-one correspondence with the detected golden fingers. Specifically, the top of sliding block 323 is provided with the draw-in groove, is provided with the trip on connecting golden finger 2, and the trip can the joint in the draw-in groove of sliding block 323 to realize the detachable connection between sliding block 323 and the connecting golden finger 2, simple structure, it is firm to connect, and makes things convenient for the dismouting.

In order to facilitate the assembly and disassembly of the golden finger 2 and the adjustment seat 33, the second chute 332 is a through slot penetrating along the length direction of the adjustment seat 33 (parallel to the length direction of the support seat 1). When the connecting golden finger 2 needs to be removed, the hook of the connecting golden finger 2 can be pulled out of the clamping groove of the sliding block 323, and then the connecting golden finger 2 is pushed to slide to the end part of the second sliding groove 332 and then slides continuously, so that the connecting golden finger 2 can be removed from the adjusting seat 33.

Each connecting golden finger 2 comprises a connecting end 21 and an adjusting end 22, wherein the connecting end 21 is used for connecting a detecting golden finger on an FPC board to be detected, and the adjusting end 22 is connected with a sliding block 323. Wherein the second slider is arranged between the connecting end 21 and the adjusting end 22. During testing, an operator rotates the first knob 31 to adjust the distance between two adjacent connecting golden fingers 2 through the transmission assembly 32, so that the distance between the two adjacent connecting golden fingers is equal to the distance between the two adjacent connecting golden fingers and the detecting golden fingers on the FPC board to be detected, and then the detecting golden fingers are in one-to-one corresponding contact with the connecting golden fingers 2, so that the LED lamp can be subjected to lighting test. Optionally, the supporting seat 1 is provided with a receiving groove 11 for receiving the connection end 21. The setting of the accommodating groove 11 can play a role in positioning and limiting the light bar to be detected, so that the detection golden finger on the light bar can be quickly and accurately contacted with the connection golden finger 2.

Fig. 4 is a schematic view showing the structure of the lighting device provided in the present embodiment in the state where the pressing plate 6 is opened. As shown in fig. 4 and fig. 2, to ensure that the detecting golden finger and the connecting golden finger 2 are always contacted in the whole test process, the lighting device further comprises a pressing plate 6, wherein the pressing plate 6 can press the detecting golden finger on the corresponding connecting end 21 so as to prevent the phenomenon that the LED lamp of the lamp strip cannot be normally lighted due to poor contact between the detecting golden finger and the connecting golden finger 2.

Alternatively, one end of the pressing plate 6 is rotatably connected to one side of the accommodating groove 11, and the other end is magnetically adsorbed to the other side of the accommodating groove 11. The design can make things convenient for operating personnel to open clamp plate 6 in order to get and put the FPC board that waits to detect, is fixed in clamp plate 6 on supporting seat 1 through magnetic attraction, and is fixed firm, can prevent to detect golden finger and connect golden finger 2 and disconnect in the testing process to guarantee the accuracy of testing result.

Specifically, the pressing plate 6 is provided with a first magnetic member 61, and the supporting seat 1 is provided with a second magnetic member 12 capable of magnetically attracting the first magnetic member 61. In one embodiment, the first magnetic member 61 is a metal member, the second magnetic member 12 is a permanent magnet, and the operator only needs to overcome the attraction force between the metal member and the permanent magnet to open the pressing plate 6. In another embodiment, the first magnetic member 61 is a metal member, the second magnetic member 12 is an electromagnet, and when the pressing plate 6 needs to be opened, an operator only needs to cut off an external power source electrically connected with the electromagnet to enable the attraction force of the electromagnet to disappear, so that the pressing plate 6 is easily opened.

With continued reference to fig. 1 and 4, the lighting device further includes an upper cover 5, where the upper cover 5 is disposed above the supporting base 1, so as to partially cover and connect the golden finger 2 and the spacing adjustment mechanism 3. Through setting up upper cover 5, can seal drive assembly 32, adjustment seat 33 and connect golden finger 2's adjustment end 22 in upper cover 5 and supporting seat 1 enclose the accommodation space who establishes the formation, prevent that drive gear 322 and sliding block 323 from exposing for a long time and leading to its ash that falls on, and then influence the meshing effect of both.

Optionally, the upper cover 5 is provided with a avoiding hole to avoid the first knob 31, so that the first knob 31 is exposed outside the upper cover 5, and thus an operator can conveniently adjust the distance between two adjacent connecting golden fingers 2 by rotating the first knob 31.

In order to realize accurate adjustment of the distance between two adjacent connecting golden fingers 2, a plurality of scale marks which are circularly arranged are further arranged on the upper surface of the upper cover 5, and the first knob 31 is provided with an indicating needle. An operator can realize accurate adjustment of the distance between two adjacent connecting golden fingers 2 by observing the positions of the indicating needle and the scale marks. Of course, in other embodiments, the indicator needle may be provided on the upper surface of the upper cover 5, and the graduation marks may be provided on the first knob 31, which can achieve the above-described effects.

As shown in fig. 4, the upper cover 5 includes a fixed cover 51 and a flip cover 52 rotatably connected to the fixed cover 51, the fixed cover 51 is fixedly disposed on the supporting seat 1, the flip cover 52 has an open position and a closed position, and when the flip cover 52 is in the open position, the connecting golden finger 2 can be exposed, so as to facilitate the operator to disassemble and assemble the connecting golden finger 2; when the flip 52 is in the closed position, the adjustment end 22 of the connecting golden finger 2 can be closed to prevent the operator from erroneously touching the connecting golden finger 2 to be detached. In this embodiment, the fixing cover 51 is fixed on the supporting seat 1 through a connecting bolt, so that the connection is stable and the disassembly and assembly are convenient.

Fig. 5 is a schematic cross-sectional view of the lighting device according to the present embodiment after the upper cover 5 is removed. Fig. 6 is a schematic cross-sectional view of the lighting device according to the present embodiment after the upper cover 5 is removed. As shown in fig. 4-5, the lighting device further includes an integral adjustment mechanism 4, the integral adjustment mechanism 4 is disposed on the support base 1, and the integral adjustment mechanism 4 is configured to drive the adjustment base 33 to slide along the length direction of the support base 1. Through setting up whole guiding mechanism 4, can adjust the position of all connection golden fingers 2 through adjusting seat 33 to realize the quick regulation of the position of a plurality of connection golden fingers 2.

Specifically, the adjusting seat 33 is provided with an internal threaded hole, and the overall adjusting mechanism 4 includes an adjusting screw 41, the adjusting screw 41 extending in the longitudinal direction of the support seat 1 and rotatably disposed on the support seat 1, and the adjusting screw 41 is screwed into the internal threaded hole of the adjusting seat 33. The adjusting screw 41 and the adjusting seat 33 form a screw nut pair structure, when an operator rotates the adjusting screw 41, the adjusting seat 33 can translate along the extending direction of the adjusting screw 41, so that the positions of all the connecting golden fingers 2 are adjusted.

Optionally, the integral adjusting mechanism 4 further includes a second knob 42, one end of the adjusting screw 41 is disposed through the support seat 1, and the other end of the adjusting screw 41 is connected to the second knob 42, so as to facilitate the user to rotate the adjusting screw 41.

Fig. 7 shows a partial enlargement of fig. 5 at B. As shown in fig. 7 in combination with fig. 5, in order to prevent the smooth rotation of the adjusting screw 41 from being affected when the transmission gear 322 is engaged with the engagement gear 3231 on the slider 323, the engagement gear 3231 is located at an upper portion of the slider 323, and the connection rod 321 is liftably provided on the support base 1 and has an engagement position for engaging the engagement gear 3231 with the transmission gear 322 and a separation position for separating the engagement gear 3231 from the transmission gear 322. When all the connecting golden fingers 2 need to be integrally adjusted, the first knob 31 can be pressed to enable the connecting rod 321 to be located at the separation position, namely the meshing teeth 3231 are separated from the transmission gear 322, and at the moment, an operator rotates the second knob 42 again, so that the adjusting seat 33 can be driven to be parallel through the rotation of the adjusting screw 41; when the position of the single connecting golden finger 2 needs to be adjusted, the first knob 31 can be positioned at the meshing position, namely the meshing teeth 3231 are meshed with the transmission gear 322, and at the moment, the operator can rotate the corresponding first knob 31 to adjust the position of the corresponding connecting golden finger 2.

Further, the supporting seat 1 is provided with mounting holes 13 corresponding to the connecting rods 321 one by one, and the connecting rods 321 are mounted in the mounting holes 13 in a resettable manner through the resetting pieces 34. It should be noted that, the connection manner between the connecting rod 321 and the supporting seat 1 is the same as the connection manner between the pen refill and the pen holder of the ball-point pen in the prior art, that is, the operator can switch the connecting rod 321 between the engaged position and the disengaged position by repeatedly pressing the first knob 31, and the connection manner between the connecting rod 321 and the supporting seat 1 is not repeated in this embodiment.

The above embodiments merely illustrate the basic principle and features of the present utility model, and the present utility model is not limited to the above embodiments, but may be varied and altered without departing from the spirit and scope of the present utility model.

Claims (10)

1. A lighting device, comprising:

A support base (1);

At least two connecting golden fingers (2) are arranged at intervals along the length direction of the supporting seat (1);

spacing adjustment mechanism (3), every connect golden finger (2) all correspond one spacing adjustment mechanism (3), spacing adjustment mechanism (3) include first knob (31) and drive assembly (32), drive assembly (32) both ends are connected respectively first knob (31) and corresponding connect golden finger (2), just drive assembly (32) are configured to with the rotary motion of first knob (31) is changed into connect golden finger (2) are followed the length direction's of supporting seat (1 rectilinear motion.

2. The lighting device according to claim 1, characterized in that said pitch adjustment mechanism (3) further comprises an adjustment seat (33) provided on said support seat (1); the transmission assembly (32) includes:

The connecting rod (321), one end of the connecting rod (321) is rotatably arranged on the supporting seat (1), and the other end of the connecting rod is connected with the first knob (31);

the transmission gear (322) is sleeved on the connecting rod (321);

the sliding block (323) is arranged on the adjusting seat (33) in a sliding mode, the sliding block (323) is provided with meshing teeth (3231) capable of meshing with the transmission gear (322), and the sliding block (323) is connected with the corresponding connecting golden finger (2).

3. The lighting device according to claim 2, further comprising an integral adjustment mechanism (4), the integral adjustment mechanism (4) being arranged on the support base (1), the integral adjustment mechanism (4) being configured to drive the adjustment base (33) to slide along the length direction of the support base (1).

4. A lighting device according to claim 3, characterized in that the adjustment seat (33) is internally provided with an internally threaded hole, the integral adjustment mechanism (4) comprises an adjustment screw (41), the adjustment screw (41) extends along the length direction of the support seat (1) and is rotatably arranged on the support seat (1), and the adjustment screw (41) is screwed into the internally threaded hole of the adjustment seat (33).

5. The lighting device according to claim 4, wherein the engagement tooth (3231) is located at an upper portion of the slider (323), and the connecting rod (321) is provided to be liftable on the support base (1) and has an engagement position for engaging the engagement tooth (3231) with the transmission gear (322) and a separation position for separating the engagement tooth (3231) from the transmission gear (322).

6. Lighting device according to claim 1, characterized in that said connecting gold finger (2) is removably connected to the corresponding transmission assembly (32).

7. The lighting device according to claim 1, wherein each connecting golden finger (2) comprises a connecting end (21) and an adjusting end (22), the connecting ends (21) are used for connecting and detecting golden fingers, the adjusting ends (22) are connected with the transmission assembly (32), and the supporting seat (1) is provided with a containing groove (11) for containing the connecting ends (21);

The lighting device further comprises a pressing plate (6), and the pressing plate (6) can press the detection golden finger on the corresponding connecting end (21).

8. The lighting device according to claim 7, wherein one end of the pressing plate (6) is rotatably connected to one side of the accommodating groove (11), and the other end is magnetically attracted to the other side of the accommodating groove (11).

9. The lighting device according to any one of claims 1-8, further comprising an upper cover (5), said upper cover (5) being arranged over said support base (1) to partially shield said connecting golden finger (2) and said spacing adjustment mechanism (3).

10. The lighting device according to claim 9, characterized in that one of the upper cover (5) and the first knob (31) is provided with a plurality of graduation marks arranged in a circular shape, and the other is provided with an indicator needle.