Adjustable lighting device

Abstract

The adjustable lighting device comprises a shell, a circuit board is arranged in the shell, and one or more first circuit terminals and a plurality of second circuit terminals are arranged on the circuit board; a plurality of light emitting units connected to the circuit board; the switch terminal is arranged in the circuit board and is used for controlling the connection and disconnection of the plurality of light-emitting units; the sliding rod is installed on the shell in a sliding mode and can make contact with the switch terminal, the second circuit terminal is connected with one or more light-emitting units, and when the sliding rod makes contact with the switch terminal and interacts with the switch terminal, the second circuit terminal is connected with the one or more light-emitting units. And the switch terminal selectively connects the one or more first circuit terminals with one or more of the plurality of second circuit terminals so as to control at least part of the plurality of light-emitting units to be switched on or switched off, so that the switch-on state of the plurality of light-emitting units is changed, and the lighting parameters of the lighting device are adjusted. According to the adjustable lighting device, the size of the switch terminal is small, and the switch terminal can be conveniently arranged on a circuit board.

Description

Technical Field

[0001] The utility model relates to an adjustable lighting device, whose lighting parameters can be adjusted, such as brightness and color temperature. Background Art

[0002] In the prior art, the color temperature or brightness level of a lighting device (e.g., an LED lamp) is changed by an SMT (surface mount technology) or DIP (dual in-line package) switch module on a printed circuit board (PCB). The size of such a switch module is at least 10 mm long, and the large size of the switch module limits the space for components on the PCB. In addition, the switch module is expensive, which results in a high cost for the lighting device. Utility Model Content

[0003] In view of this, the utility model proposes an adjustable lighting device with a switch terminal of smaller size. Through the cooperation between the switch terminal and the slide bar, the adjustment of lighting parameters is achieved, thus overcoming the defect that the switch module is larger in size and limits the space on the PCB.

[0004] The lighting device according to the present application includes: a shell, a circuit board is arranged in the shell, and the circuit board has one or more first circuit terminals and multiple second circuit terminals; multiple light-emitting units, the multiple light-emitting units are connected to the circuit board; a switch terminal, the switch terminal is arranged in the circuit board, and is used to control the connection and disconnection of the multiple light-emitting units; and a sliding rod, the sliding rod is slidably installed on the shell and can contact the switch terminal, wherein the second circuit terminal is respectively connected to the one or more light-emitting units, and when the sliding rod contacts and interacts with the switch terminal, the switch terminal selectively connects the one or more first circuit terminals with one or more of the multiple second circuit terminals, so as to control at least some of the multiple light-emitting units to be connected or disconnected, so as to change the connection state of the multiple light-emitting units, thereby adjusting the lighting parameters of the lighting device.

[0005] The lighting device can connect or disconnect at least some of the multiple light-emitting units through the cooperation of the sliding rod and the switch terminal, thereby changing the number of light-emitting units connected or disconnected or the total power, and further adjusting the lighting parameters of the lighting device. In addition, the switch terminal is small in size, so that there is ample space on the PCB, reducing the cost of the lighting device.

[0006] According to one embodiment of the present application, the switch terminal has an arch shape, and during the process of the slide bar contacting and interacting with the switch terminal, the slide bar presses the switch terminal downward, so that the switch terminal engages and connects the circuit of the light-emitting unit.

[0007] In the initial state, the arched switch terminal remains disconnected from the circuit of the light-emitting unit, and the slide bar presses the switch terminal downward to connect the circuit of the light-emitting unit. After the slide bar slides away from the switch terminal, the switch terminal can automatically rebound, thereby disconnecting the circuit of the light-emitting unit. This structure is simple, easy to operate, and low in cost.

[0008] Further, at the vertex of the arch shape of the switch terminal, the lower surface of the switch terminal has a first protrusion extending downward to engage with the circuit of the light emitting unit.

[0009] A first protrusion extending downward is provided on the lower surface of the switch terminal to facilitate engagement with the circuit of the light emitting unit.

[0010] Furthermore, the slide bar includes: a handle, which is arranged on the outside of the shell and is used to make the slide bar slide in the opening of the shell under the push of the user; a buckle portion, which is arranged on the side of the handle facing the shell and cooperates with the opening to keep the slide bar on the shell; and an actuating rod, which extends from the handle into the shell and presses the switch terminal when the actuating rod slides to the switch terminal.

[0011] The slide bar has a simple structure and can easily press the switch terminal downward.

[0012] Furthermore, the lower surface of the actuating rod has a boss for abutting against the switch terminal.

[0013] Further, at the vertex of the arched shape of the switch terminal, the upper surface of the switch terminal has a recess for receiving the boss.

[0014] According to another embodiment of the present application, in the initial state, the switch terminals engage and connect the circuits of the light-emitting units, and multiple light-emitting units are in an on state. During the process of the sliding rod contacting and interacting with the switch terminals, the sliding rod is inserted between the switch terminals and the circuits of the light-emitting units, thereby disconnecting the circuits of some light-emitting units.

[0015] Further, the switch terminal includes: a supporting portion, one end of which is mounted to the circuit board; a connecting portion, one end of which is connected to the other end of the supporting portion, and the connecting portion extends downward at an angle relative to the supporting portion; and a contact portion, which extends from the other end of the connecting portion and is parallel to the circuit board, wherein, in an initial state, the contact portion engages and connects the circuit of the light-emitting unit.

[0016] Further, the lower surface of the contact portion has a second protrusion extending downward to engage with the circuit of the light emitting unit.

[0017] Further, the slide bar includes: a handle, which is arranged on the outside of the shell and is used for the slide bar to slide in the opening of the shell when pushed by the user; a buckle portion, which is arranged on the side of the handle facing the shell and cooperates with the opening to keep the slide bar on the shell; and an actuating rod, which extends from the handle into the shell, and when the actuating rod slides to the switch terminal, the actuating rod is inserted between the switch terminal and the circuit of the light-emitting unit, thereby disconnecting the circuit of part of the light-emitting unit.

[0018] Further, the upper surface of the actuating rod has a groove for receiving the second protrusion of the contact portion.

[0019] In this embodiment, in the initial state, the switch terminal remains connected to the circuit of the light-emitting unit, and the slide bar slides and inserts between the switch terminal and the circuit of the light-emitting unit to disconnect the circuit of the light-emitting unit. After the slide bar slides away from the switch terminal, the switch terminal can automatically rebound, thereby connecting the circuit of the light-emitting unit. This structure is simple, easy to operate, and low in cost.

[0020] According to another embodiment of the present application, the slide bar pushes the switch terminal so that the switch terminal is engaged with and connected to the circuits of at least some of the plurality of light emitting units to turn on some of the light emitting units.

[0021] Furthermore, the first end of the switch terminal is rotatably fixed to the circuit board, so that during the rotation of the switch terminal, the second end of the switch terminal can sequentially engage with at least part of the circuit of the light-emitting unit.

[0022] Further, the switch terminal includes: a first support portion, which is arranged at the first end of the switch terminal and can be rotatably fixed to the circuit board; a second support portion, which is arranged at the second end of the switch terminal and can sequentially engage the circuit of at least part of the light-emitting unit during rotation; and an intermediate connecting portion, which connects the first supporting portion and the second supporting portion and is spaced apart from the circuit board.

[0023] Further, the lower surface of the first support portion has a first protrusion for engaging with a first circuit terminal on the circuit board; the lower surface of the second support portion has a second protrusion for selectively engaging with a second circuit terminal on the circuit board.

[0024] Further, the sliding rod cooperates with the middle connecting portion of the switch terminal so as to push the switch terminal.

[0025] In this embodiment, the slide bar pushes the switch terminal, and the switch terminal selectively connects the first circuit terminal with one of the plurality of second circuit terminals to change the connection state of the plurality of light-emitting units, thereby adjusting the lighting parameters of the lighting device.

[0026] Further, the lighting device includes a plurality of switch terminals, and the slide bar selectively contacts and interacts with different switch terminals, so as to selectively connect the first circuit terminal with one of the plurality of second circuit terminals through the corresponding switch terminal.

[0027] Furthermore, the lighting parameters include brightness and color temperature.

[0028] Further, adjusting the lighting parameters of the lighting device includes adjusting the brightness, and changing the on-state of the plurality of light-emitting units includes changing the number of on-states or on-state powers of the light-emitting units.

[0029] Further, adjusting the lighting parameters of the lighting device includes adjusting the color temperature, the multiple light-emitting units include a first group of light-emitting units having a first color temperature and a second group of light-emitting units having a second color temperature, and changing the on-state of the multiple light-emitting units includes changing the on-state of at least one of the first group of light-emitting units and the second group of light-emitting units. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0031] Figure 1 It is a stereoscopic view of a lighting device according to one embodiment of the present application.

[0032] Figure 2 for Figure 1 A three-dimensional view of a slide bar in a lighting device.

[0033] Figure 3 for Figure 1 A three-dimensional view of a switch terminal in a lighting device.

[0034] Figure 4 It is a three-dimensional diagram of a lighting device according to another embodiment of the present application.

[0035] Figure 5 for Figure 4 A three-dimensional view of a slide bar in a lighting device.

[0036] Figure 6 for Figure 4 A three-dimensional view of a switch terminal in a lighting device.

[0037] Figure 7 It is a three-dimensional diagram of a lighting device according to another embodiment of the present application.

[0038] Figure 8 for Figure 7 A three-dimensional view of a switch terminal in a lighting device.

[0039] The reference numerals are as follows:

[0040] 1. Switch terminals

[0041] 10. Concave part

[0042] 11. Support

[0043] 12. Connection

[0044] 13. Contact Department

[0045] 15. First protrusion

[0046] 16. Second protrusion

[0047] 17. First support part

[0048] 17-1. The first protrusion

[0049] 18. Second support part

[0050] 18-1. Second protrusion

[0051] 19. Middle connection

[0052] 2. Shell

[0053] 21. Open your mouth

[0054] 3. Light-emitting unit

[0055] 4. Circuit board

[0056] 5. Slide bar

[0057] 51. Handle

[0058] 52. Buckle

[0059] 53. Actuating rod

[0060] 54. Boss

[0061] 55. Groove DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the following embodiments.

[0063] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0064] The adjustable lighting device according to the present application includes: a housing 2, a circuit board 4 is arranged in the housing 2, and the circuit board 4 has one or more first circuit terminals and multiple second circuit terminals; multiple light-emitting units 3, and the multiple light-emitting units 3 are connected to the circuit board 4; a switch terminal 1, the switch terminal 1 is arranged in the circuit board 4, and is used to control the connection and disconnection of the multiple light-emitting units 3; and a slide bar 5, which is slidably mounted on the housing 2 and can contact the switch terminal 1. The second circuit terminal is respectively connected to the one or more light-emitting units 3, and when the slide bar 5 contacts and interacts with the switch terminal 1, the switch terminal 1 selectively connects the one or more first circuit terminals to one or more of the multiple second circuit terminals, so as to control at least part of the multiple light-emitting units 3 to be connected or disconnected, so as to change the connection state of the multiple light-emitting units 3, thereby adjusting the lighting parameters of the lighting device. The lighting parameters include brightness and color temperature.

[0065] Specifically, Figure 1 and Figure 4 As shown, the lighting device includes a plurality of switch terminals 1, and the slide bar 5 selectively contacts and interacts with different switch terminals, so as to selectively connect the first circuit terminal with one of the plurality of second circuit terminals through the corresponding switch terminal.

[0066] The first circuit terminal is a component of a first circuit (e.g., a power supply circuit), and the second circuit terminal is a component of a second circuit (e.g., a light-emitting unit circuit). If the first circuit terminal is connected to the second circuit terminal through the switch terminal 1, the first circuit and the second circuit form a loop, and the light-emitting unit is in the on state. If the first circuit terminal is disconnected from the second circuit terminal through the switch terminal 1, the first circuit and the second circuit are disconnected, and the light-emitting unit is in the off state.

[0067] Adjusting the lighting parameters of the lighting device includes adjusting the brightness, and changing the switched-on states of the plurality of light-emitting units 3 includes changing the switched-on number or switched-on power of the light-emitting units.

[0068] The following example illustrates how to adjust the brightness of a lighting device, that is, how to adjust the lumens of a lighting device.

[0069] For example, the first switch terminal of the switch terminal 1 is connected to the first group of light emitting unit circuits, which has three light emitting units, and the second switch terminal of the switch terminal 1 is connected to the second group of light emitting unit circuits, which has five light emitting units.

[0070] When the slide bar 5 is engaged with the first switch terminal, the first switch terminal connects the first group of light emitting unit circuits to the power supply circuit, and the three light emitting units are turned on.

[0071] When the slide bar 5 leaves the first switch terminal, the first group of light-emitting unit circuits is disconnected from the power supply circuit, and the three light-emitting units in the first group of light-emitting unit circuits are turned off.

[0072] When the slide bar 5 slides to match with the second switch terminal, the second switch terminal connects the second group of light-emitting unit circuits to the power circuit, and then five light-emitting units are turned on, and their brightness is different from that of three light-emitting units.

[0073] Therefore, by sliding the slide bar 5, the slide bar 5 engages with different switch terminals, so that different light-emitting unit circuits are connected and disconnected with the power supply circuit, the number of connected light-emitting units is changed, and the brightness of the lighting device is changed.

[0074] Similar to changing the number of light-emitting units that are turned on, the brightness of the lighting device can also be changed by changing the power of the light-emitting units that are turned on.

[0075] Adjusting the lighting parameters of the lighting device also includes adjusting the color temperature, the multiple light-emitting units include a first group of light-emitting units with a first color temperature and a second group of light-emitting units with a second color temperature, and changing the on-state of the multiple light-emitting units 3 includes changing the on-state of at least one of the first group of light-emitting units and the second group of light-emitting units.

[0076] The following example illustrates how to adjust the color temperature of a lighting device.

[0077] For example, the first switch terminal in the switch terminal 1 is connected to the first group of light-emitting unit circuits, and the first group of light-emitting units in the first group of light-emitting unit circuits has a first color temperature. The second switch terminal in the switch terminal 1 is connected to the second group of light-emitting unit circuits, and the second group of light-emitting units in the second group of light-emitting unit circuits has a second color temperature.

[0078] When the slide bar 5 is engaged with the first switch terminal, the first switch terminal connects the first group of light emitting unit circuits to the power supply circuit, and the first group of light emitting units is turned on to emit light with a first color temperature.

[0079] When the slide bar 5 leaves the first switch terminal, the first group of light-emitting unit circuits is disconnected from the power supply circuit, and the first group of light-emitting units in the first group of light-emitting unit circuits is turned off.

[0080] When the slide bar 5 slides to match the second switch terminal, the second switch terminal connects the second group of light emitting unit circuits to the power supply circuit, and the second group of light emitting units is turned on to emit light with a second color temperature that is different from the first color temperature.

[0081] Therefore, by sliding the slide bar 5 , the slide bar 5 engages with different switch terminals, so that the light-emitting unit circuits with different color temperatures are connected to and disconnected from the power supply circuit, thereby achieving a change in color temperature.

[0082] Figure 1 , Figure 2 and Figure 3 A lighting device according to a first embodiment of the present application is shown.

[0083] In this embodiment, if Figure 3 As shown, the switch terminal 1 has an arch shape. During the process of the slide bar 5 contacting and interacting with the switch terminal 1 , the slide bar 5 presses the switch terminal 1 downward, so that the switch terminal 1 is engaged and connects the circuit of the light emitting unit 3 .

[0084] That is, the slide bar 5 presses the switch terminal 1 downward, so that the light emitting unit circuit is connected to the power supply circuit, thereby turning on at least part of the light emitting units.

[0085] At the apex of the arched shape of the switch terminal 1 , the lower surface of the switch terminal 1 has a first protrusion 15 extending downward to engage with the circuit of the light emitting unit 3 .

[0086] like Figure 2 As shown, the slide bar 5 includes: a handle 51, which is arranged on the outside of the housing 2 and is used to make the slide bar slide in the opening 21 of the housing 2 under the push of the user; a buckle portion 52, which is arranged on the side of the handle 51 facing the housing 2 and cooperates with the opening 21 to keep the slide bar 5 on the housing 2; and an actuating rod 53, which extends from the handle 51 into the housing 2 and presses the switch terminal 1 when the actuating rod 53 slides to the switch terminal 1.

[0087] The lower surface of the actuating rod 53 has a boss 54 for abutting against the switch terminal 1 .

[0088] At the apex of the arched shape of the switch terminal 1 , the upper surface of the switch terminal 1 has a recess 10 for receiving the boss 54 .

[0089] The boss 54 of the actuating rod 53 can slide to the recess 10 and be received in the recess 10. During the process that the recess 10 receives the boss 54, the user can feel the click or vibration generated by the recess 10 receiving the boss 54, thereby reminding the user that the slide bar 5 has been engaged with the switch terminal 1.

[0090] Figure 4 , Figure 5 and Figure 6 A lighting device according to a second embodiment of the present application is shown.

[0091] In this embodiment, in the initial state, the switch terminal 1 engages and connects the circuit of the light-emitting unit 3, and multiple light-emitting units 3 are in an on state. During the process of the slide bar 5 contacting and interacting with the switch terminal 1, the slide bar 5 is inserted between the switch terminal 1 and the circuit of the light-emitting unit 3, thereby disconnecting the circuit of some light-emitting units.

[0092] like Figure 6 As shown, the switch terminal 1 includes: a supporting portion 11, one end of which is mounted to the circuit board 4; a connecting portion 12, one end of which is connected to the other end of the supporting portion 11, and the connecting portion 12 extends downward at an angle relative to the supporting portion 11; and a contact portion 13, which extends from the other end of the connecting portion 12 and is parallel to the circuit board 4, wherein, in the initial state, the contact portion 13 engages and connects the circuit of the light-emitting unit.

[0093] The lower surface of the contact portion 13 has a second protrusion 16 extending downward to engage with the circuit of the light emitting unit 3 .

[0094] like Figure 5 As shown, the slide bar 5 includes: a handle 51, which is arranged on the outside of the shell 2 and is used to slide the slide bar in the opening 21 of the shell 2 when pushed by the user; a buckle portion 52, which is arranged on the side of the handle 51 facing the shell 2 and cooperates with the opening 21 to keep the slide bar 5 on the shell 2; and an actuating rod 53, which extends from the handle 51 into the shell 2. When the actuating rod 53 slides to the switch terminal 1, the actuating rod 53 is inserted between the switch terminal 1 and the circuit of the light-emitting unit 3, thereby disconnecting part of the circuit of the light-emitting unit 3.

[0095] The upper surface of the actuating rod 53 has a groove 55 for receiving the second protrusion 16 of the contact portion 13 .

[0096] The groove 55 of the actuating rod 53 can slide to the second protrusion 16 and receive the second protrusion 16. In the process of receiving the second protrusion 16 in the groove 55, the user can feel the click or vibration generated by the groove 55 receiving the second protrusion 16, thereby reminding the user that the slide bar 5 has been engaged with the switch terminal 1.

[0097] Figure 7 and Figure 8 A switch terminal of a lighting device according to a third embodiment of the present application is shown.

[0098] like Figure 7 As shown, the slide bar 5 pushes the switch terminal 1 so that the switch terminal 1 is engaged with and connected to the circuits of at least some of the plurality of light emitting units 3 to turn on some of the light emitting units.

[0099] Specifically, the first end of the switch terminal 1 is rotatably fixed to the circuit board 4 , so that during the rotation of the switch terminal 1 , the second end of the switch terminal 1 can sequentially engage with at least part of the circuit of the light emitting unit.

[0100] like Figure 8As shown, the switch terminal 1 includes: a first support portion 17, which is arranged at the first end of the switch terminal 1, and the first support portion 17 can be rotatably fixed to the circuit board 4; a second support portion 18, which is arranged at the second end of the switch terminal 1, and during the rotation process, the second support portion 18 can sequentially engage the circuit of at least part of the light-emitting unit; and an intermediate connecting portion 19, which connects the first supporting portion 17 and the second supporting portion 18, and the intermediate connecting portion 19 is spaced apart from the circuit board 4.

[0101] The lower surface of the first support portion 17 has a first protrusion 17 - 1 for engaging with the first circuit terminal on the circuit board 4 ; the lower surface of the second support portion 18 has a second protrusion 18 - 1 for selectively engaging with the second circuit terminal on the circuit board 4 .

[0102] The slide bar 5 cooperates with the middle connecting portion 19 of the switch terminal 1 so as to push the switch terminal 1 .

[0103] In the present application, the slide bar 5 is made of insulating material, such as plastic material. During the engagement and separation process of the slide bar 5 made of insulating material and the conductive switch terminal 1, no arc is generated between the slide bar 5 and the switch terminal 1, which can prevent damage to the lighting device components.

[0104] In addition, the handle 51 may be provided with textures to increase the friction between the user's fingers and the handle 51 .

[0105] According to the adjustable lighting device of the present application, the lighting parameters of the lighting device can be adjusted through the cooperation between the switch terminal and the slide bar. The size of the switch terminal is small, which is convenient for arrangement on the PCB board.

[0106] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An adjustable lighting device, characterized in that: The lighting device comprises: A housing (2), wherein a circuit board (4) is arranged in the housing (2), and the circuit board (4) has one or more first circuit terminals and a plurality of second circuit terminals; A plurality of light-emitting units (3), wherein the plurality of light-emitting units (3) are connected to the circuit board (4); a switch terminal (1), the switch terminal (1) being arranged in the circuit board (4) and used for controlling the switching on and off of the plurality of light-emitting units (3); and a slide bar (5), the slide bar (5) being slidably mounted on the housing (2) and being capable of contacting the switch terminal (1), The second circuit terminal is respectively connected to one or more of the light-emitting units (3), and when the slide bar (5) contacts and interacts with the switch terminal (1), the switch terminal (1) selectively connects the one or more first circuit terminals to one or more of the second circuit terminals, so as to control at least some of the light-emitting units (3) to be turned on or off, so as to change the on state of the light-emitting units (3), thereby adjusting the lighting parameters of the lighting device.

2. The adjustable lighting device according to claim 1, characterized in that: The switch terminal (1) has an arched shape, and during the process of the slide bar (5) contacting and interacting with the switch terminal (1), the slide bar (5) presses the switch terminal (1) downward, so that the switch terminal (1) engages and connects the circuit of the light-emitting unit (3).

3. The adjustable lighting device according to claim 2, characterized in that: At the vertex of the arched shape of the switch terminal (1), the lower surface of the switch terminal (1) has a first protrusion (15) extending downward to engage with the circuit of the light emitting unit (3).

4. The adjustable lighting device according to claim 3, characterized in that: The slide bar (5) comprises: A handle (51) is arranged on the outside of the housing (2) and is used to make the slide bar slide in the opening (21) of the housing (2) under the push of a user; a buckle portion (52), arranged on a side of the handle (51) facing the housing (2), and cooperating with the opening (21) so as to keep the slide bar (5) on the housing (2); and An actuating rod (53) extends from the handle (51) into the housing (2), and when the actuating rod (53) slides to the switch terminal (1), the switch terminal (1) is pressed.

5. The adjustable lighting device according to claim 4, characterized in that: The lower surface of the actuating rod (53) has a boss (54) for abutting against the switch terminal (1).

6. The adjustable lighting device according to claim 5, characterized in that: At the vertex of the arched shape of the switch terminal (1), the upper surface of the switch terminal (1) has a recess (10) for receiving the boss (54).

7. The adjustable lighting device according to claim 1, characterized in that: In an initial state, the switch terminal (1) engages and connects the circuit of the light-emitting unit (3), and the plurality of light-emitting units (3) are in an on state. During the process of the slide bar (5) contacting and interacting with the switch terminal (1), the slide bar (5) is inserted between the switch terminal (1) and the circuit of the light-emitting unit (3), thereby disconnecting the circuit of some of the light-emitting units.

8. The adjustable lighting device according to claim 7, characterized in that: The switch terminal (1) comprises: A supporting portion (11), one end of the supporting portion (11) being mounted on the circuit board (4); a connecting portion (12), one end of the connecting portion (12) being connected to the other end of the supporting portion (11), the connecting portion (12) extending downward at an angle relative to the supporting portion (11); and A contact portion (13) extending from the other end of the connecting portion (12) and parallel to the circuit board (4), wherein in the initial state, the contact portion (13) engages with and connects the circuit of the light-emitting unit.

9. The adjustable lighting device according to claim 8, characterized in that: The lower surface of the contact portion (13) has a second protrusion (16) extending downward so as to engage with the circuit of the light emitting unit (3).

10. The adjustable lighting device according to claim 9, characterized in that: The slide bar (5) comprises: A handle (51) is arranged on the outside of the housing (2) and is used for causing the slide bar to slide in the opening (21) of the housing (2) when pushed by a user; a buckle portion (52), arranged on a side of the handle (51) facing the housing (2), and cooperating with the opening (21) so as to retain the slide bar (5) on the housing (2); and An actuating rod (53) extends from the handle (51) into the housing (2); when the actuating rod (53) slides to the switch terminal (1), the actuating rod (53) is inserted between the switch terminal (1) and the circuit of the light-emitting unit (3), thereby disconnecting the circuit of part of the light-emitting unit (3).

11. The adjustable lighting device according to claim 10, characterized in that: The upper surface of the actuating rod (53) has a groove (55) for receiving the second protrusion (16) of the contact portion (13).

12. The adjustable lighting device according to claim 1, characterized in that: The slide bar (5) pushes the switch terminal (1), so that the switch terminal (1) is engaged with and connected to the circuits of at least some of the light-emitting units (3), so as to turn on the some of the light-emitting units.

13. The adjustable lighting device according to claim 12, characterized in that: The first end of the switch terminal (1) is rotatably fixed to the circuit board (4), so that during the rotation of the switch terminal (1), the second end of the switch terminal (1) can sequentially engage with the circuit of at least part of the light-emitting unit.

14. The adjustable lighting device according to claim 13, characterized in that: The switch terminal (1) comprises: A first support portion (17) is arranged at the first end of the switch terminal (1), and the first support portion (17) is rotatably fixed to the circuit board (4); A second support portion (18) is arranged at the second end of the switch terminal (1), and during the rotation process, the second support portion (18) can sequentially engage the circuit of at least part of the light-emitting unit; and An intermediate connecting portion (19) connects the first supporting portion (17) and the second supporting portion (18), and the intermediate connecting portion (19) is spaced apart from the circuit board (4).

15. The adjustable lighting device according to claim 14, characterized in that: The lower surface of the first supporting portion (17) has a first protrusion (17-1) for engaging with a first circuit terminal on the circuit board (4); the lower surface of the second supporting portion (18) has a second protrusion (18-1) for selectively engaging with the second circuit terminal on the circuit board (4).

16. The adjustable lighting device according to claim 14, characterized in that: The sliding rod (5) cooperates with the middle connecting portion (19) of the switch terminal (1) so as to push the switch terminal (1).

17. The adjustable lighting device according to claim 1, characterized in that: The lighting device comprises a plurality of switch terminals (1), and the slide bar (5) selectively contacts and interacts with different switch terminals, thereby selectively connecting the first circuit terminal with one of the plurality of second circuit terminals through the corresponding switch terminal.

18. The adjustable lighting device according to claim 1, characterized in that: The lighting parameters include brightness and color temperature.

19. The adjustable lighting device according to claim 1, characterized in that: Adjusting the lighting parameters of the lighting device includes adjusting the brightness, and changing the on-state of the plurality of light-emitting units (3) includes changing the number of on-state light-emitting units or the on-state power.

20. The adjustable lighting device according to claim 1, characterized in that: Adjusting the lighting parameters of the lighting device includes adjusting the color temperature, the multiple light-emitting units include a first group of light-emitting units with a first color temperature and a second group of light-emitting units with a second color temperature, and changing the on-state of the multiple light-emitting units (3) includes changing the on-state of at least one of the first group of light-emitting units and the second group of light-emitting units.

Images