Color temperature adjustable energy-saving lamp

Abstract

The invention discloses an energy-saving lamp with adjustable color temperature. Comprising a heat dissipation shell body, a controller installed at the position close to the upper end of the heat dissipation shell body, an LED double-color-temperature lamp panel installed in the heat dissipation shell body, a lens installed at the bottom of the heat dissipation shell body, a contact head installed in the middle of the lens and a first rotary knob piece arranged on the lens in a penetrating mode. The second knob piece penetrates through the first knob piece and limits the first knob piece, the limiting piece limits the second knob piece, both the first knob piece and the second knob piece can be rotationally adjusted in position, a control circuit board is arranged on the controller, two terminals of the first terminal set are conducted by adjusting the state of the first knob piece, and the first terminal set is connected with the second terminal set by adjusting the state of the second knob piece. The controller controls one or two of the first LED lamp set and the second LED lamp set to be turned on, and then the color temperature of the lamp is adjusted. By adjusting the state of the second knob piece, two terminals in the second terminal set are conducted, the power of the lamp is adjusted, the whole adjusting process can be rapidly completed, the overall structure is flexible, and practicability is high.

Description

Technical Field

[0001] This invention relates to a lighting fixture, and more particularly to an energy-saving lighting fixture with adjustable color temperature. Background Technology

[0002] LED, or light-emitting diode, is a semiconductor device that converts electrical energy into light energy. Compared with traditional incandescent and energy-saving lamps, LED lights have advantages such as low power consumption, long lifespan, fast start-up, no flicker, and no mercury content, making them both energy-saving and environmentally friendly, while also providing users with a more comfortable visual experience.

[0003] In the early stages of LED technology adoption, most lighting fixtures on the market were fixed color temperature products. However, with continuous technological advancements and increasing demands for better lighting environments, adjustable color temperature lighting fixtures have emerged. Adjustable color temperature technology typically achieves this by incorporating LED chips with multiple color temperatures, combined with a light mixing control circuit. Users can smoothly adjust between warm and cool light according to different scenarios.

[0004] However, existing color-temperature adjustable lighting fixtures present inconveniences when adjusting the color temperature, especially in terms of operation. For example, some engineering and commercial lighting fixtures use built-in DIP switches for color temperature adjustment. While this design may have been intended to maintain a clean appearance and prevent accidental activation, it has proven troublesome in practice: users must open the fixture's cover every time they need to adjust the color temperature. Whether it's the ceiling light's cover or the downlight's back cover, disassembly often requires tools, making the process cumbersome and posing a risk of damaging the fixture or electric shock. Summary of the Invention

[0005] Therefore, it is necessary to provide an energy-saving lamp with adjustable color temperature to address the shortcomings of existing technologies.

[0006] An adjustable color temperature energy-saving lamp includes a heat sink body, a controller installed at the upper end of the heat sink body, an LED dual-color temperature lamp panel installed inside the heat sink body, a lens installed at the bottom of the heat sink body, a contact head installed in the middle of the lens, a first knob component passing through the lens, a second knob component passing through the first knob component and limiting the first knob component, and a limiting component limiting the second knob component. Both the first knob component and the second knob component can be rotated and adjusted. The controller is equipped with a control circuit board. By cooperating with the first knob and the second knob and the contact head, the working state of the control circuit board is adjusted, thereby adjusting the working state of the LED dual-color temperature lamp panel. The contact head includes a base and several terminals mounted on the base. Each terminal includes a main body segment, a functional segment connected to one end of the main body segment, and a contact point connected to the functional segment. The terminals of the contact head are divided into two groups, one group being a first terminal group and the other group being a second terminal group. The terminals of the first terminal group and the terminals of the second terminal group are evenly spaced around the center of the base. The first knob component includes a first knob body and a first connector mounted on the first knob body. The first connector includes a first inner ring and two first connecting frames connected to opposite positions of the first inner ring, and two first connectors respectively connected to the ends of the two first connecting frames. The contact point of the first terminal group of the contact head is located on the rotation path of the first connector. The second knob component includes a second knob body and a second connector mounted on the second knob body. The second connector includes a second inner ring and two second connecting frames connected to opposite positions of the second inner ring, and two second connectors respectively connected to the ends of the two second connecting frames. The contact point of the second terminal group of the contact head is located on the rotation path of the second connector.

[0007] In one embodiment, the outer surface of the contact point is spherical, the outer surface of the first connector is spherical, the first connector has a first mating groove, and the groove wall of the first mating groove is arc-shaped; the outer surface of the second connector is spherical, the second connector has a second mating groove, and the groove wall of the second mating groove is arc-shaped.

[0008] In one embodiment, the contacts on the terminals of the second terminal group face outwards, the contacts on the terminals of the first terminal group face inwards, and the first terminal group is disposed around the second terminal group. The first mating grooves on the two first connectors are arranged in opposite directions, and the first mating grooves on the two second connectors are arranged opposite to each other.

[0009] In one embodiment, the functional segment is curved, and the contact is connected to the convex surface of the functional segment.

[0010] In one embodiment, the base includes a base body and a stop plate connected inside the base body. The base body has a hollow structure, and the stop plate is connected to the inner wall inside the base body. The stop plate and the base body together form a bottom groove and a surface groove. The openings of the bottom groove and the surface groove face opposite directions, with the opening of the bottom groove facing downwards. The main body segment of the terminal is mounted on the stop plate, and the functional segment and contact on the terminal are disposed inside the bottom groove. Furthermore, one end of the main body segment away from the functional segment extends into the surface groove.

[0011] In one embodiment, the lens has a positioning sleeve in the middle, and the positioning sleeve has a through hole that passes through the positioning sleeve along the central axis of the lens. The base also includes a flange connected to one edge of the base body, and the flange is located at the groove opening of the contact head. The base body of the contact head is inserted into the through hole of the positioning sleeve of the lens, and the flange on the base abuts against the upper end face of the positioning sleeve.

[0012] In one embodiment, the first knob body includes an inner ring, an outer ring surrounding the inner ring, and a connecting plate connecting the inner ring and the outer ring. A fixing hole is formed on the inner ring, and a retaining ring is provided on the outer peripheral surface of the second knob body near the bottom. During assembly, the outer ring of the first knob body is inserted into the bottom groove, and the second knob body of the second knob component passes through the fixing hole of the inner ring and abuts against the stop plate. The retaining ring of the second knob body abuts against the bottom of the first knob body from below to limit the position of the first knob body.

[0013] In one embodiment, the connecting plate, the inner ring, and the outer ring together form a transition groove. The first inner ring and part of the first connecting bracket of the first connector are embedded inside the inner ring. The end of the first connecting bracket away from the first inner ring and the first connecting head are exposed outside the inner ring and extend into the transition groove.

[0014] In one embodiment, the second knob body has a slot extending from top to bottom, the second inner ring of the second connector and part of the second connecting bracket are embedded inside the second knob body, and the end of the second connecting bracket away from the second inner ring and the second connector head extend into the slot.

[0015] In one embodiment, the LED dual-color temperature lamp board is provided with a first LED group and a second LED group. The first LED group uses high color temperature LED beads, and the second LED group uses low color temperature LED beads. The circuit of the control circuit board includes a voltage acquisition circuit, a control chip, a voltage output circuit, and a switching circuit. The first terminal group is connected to the voltage acquisition circuit, the second terminal group is connected to the voltage output circuit, and the first LED group and the second LED group are connected between the voltage output circuit and the switching circuit. The switching circuit is connected to the control chip. By adjusting the state of the first knob, two terminals of the first terminal group are turned on. The control chip acquires the voltage information of the voltage acquisition circuit and controls the switching circuit to work.

[0016] The beneficial effects of this invention, an adjustable color temperature energy-saving lamp, are as follows: By setting several terminals on the contact head, the terminals are divided into two groups, one being a first terminal group and the other a second terminal group. A first connecting member is provided on the first knob, and a second connecting member is provided on the second knob. Both the first and second knobs can be rotated and adjusted. By adjusting the state of the first knob, two terminals in the first terminal group are made conductive, allowing the controller to control one or two of the first and second LED groups to light up, thereby adjusting the color temperature of the lamp. By adjusting the state of the second knob, two terminals in the second terminal group are made conductive, adjusting the power of the lamp. The entire adjustment process can be completed quickly, and the overall structure is flexible and highly practical. Attached Figure Description

[0017] Figure 1 , Figure 2 These are schematic diagrams of the adjustable color temperature energy-saving lamp of the present invention from different angles; Figure 3 , Figure 4 This is an exploded view of the color temperature adjustable energy-saving lamp of the present invention from different angles; Figure 5 , Figure 6 These are schematic diagrams showing the structure of the contact head at different angles in this invention; Figure 7 This is a schematic diagram of the structure of the first knob component in this invention; Figure 8 for Figure 7 An exploded view of the first knob component shown; Figure 9 This is a schematic diagram of the structure of the second knob component in this invention; Figure 10 for Figure 9 An exploded view of the second knob component shown; Figure 11 This is a schematic diagram of the limiting component in the present invention; Figure 12 This is a cross-sectional view of the color temperature adjustable energy-saving lamp of the present invention; Figure 13 for Figure 12 An enlarged view of circle A in the image; Figure 14 This is a schematic diagram of the internal circuit connections of the present invention. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0024] Please see Figures 1 to 14 This invention provides an adjustable color temperature energy-saving lamp, comprising a heat sink body 10, a controller 20 installed at the upper end of the heat sink body 10, an LED dual-color temperature lamp panel 30 installed inside the heat sink body 10, a lens 40 installed at the bottom of the heat sink body 10, a contact head 50 installed in the middle of the lens 40, a first knob 60 passing through the lens 40, a second knob 70 passing through the first knob 60 and limiting the first knob 60, and a limiting member 80 limiting the second knob 70. The controller 20 is provided with a control circuit board and an LED driver power supply. The contact head 50 is connected to the circuit of the control circuit board. The LED dual-color temperature lamp panel 30 is connected to the driver power supply through the control circuit board. By cooperating with the first knob 60 and the second knob 70 and the contact head 50, the working state of the control circuit board is adjusted, thereby adjusting the working state of the LED dual-color temperature lamp panel 30.

[0025] The heat dissipation shell body 10 has a receiving groove 11 at the bottom. The heat dissipation shell body 10 is recessed in the middle of the bottom of the receiving groove 11 to form a protrusion 13. The protrusion 13 extends from one side of the heat dissipation shell body 10. The protrusion 13 is hollow inside to form an inner groove 12. The heat dissipation shell body 10 is also provided with heat dissipation fins 14, which are distributed around the protrusion 13.

[0026] The LED dual-color temperature lamp panel 30 is provided with a lamp panel body 33, a first LED lamp group 31, and a second LED lamp group 32. The first LED lamp group 31 and the second LED lamp group 32 are both mounted on the lamp panel body 33. The first LED lamp group 31 uses high color temperature LEDs, and the second LED lamp group 32 uses low color temperature LEDs. There are several groups of first LED lamp groups 31 and second LED groups. The first LED lamp groups 31 in the same group are evenly spaced around the central axis of the lamp panel body 33, and the second LED lamp groups 32 in the same group are also evenly spaced around the central axis of the lamp panel body 33. Furthermore, the first LED lamp groups 31 and the second LED groups are evenly distributed on the lamp panel body 33. In addition, a perforation 34 is provided in the middle of the lamp panel body 33.

[0027] The lens 40 is provided with a positioning sleeve 41 in the middle, and the positioning sleeve 41 is provided with a through hole 411, which penetrates the positioning sleeve 41 along the central axis of the lens 40.

[0028] The contact head 50 includes a base 51 and a plurality of terminals 52 mounted on the base 51. The terminals 52 are made of a metal material with good elastic deformation ability. Each terminal 52 includes a main body section 521, a functional section 522 connected to one end of the main body section 521, and a contact 523 connected to the functional section 522. The functional section 522 is curved, and the contact 523 is connected to the convex surface of the functional section 522. The outer surface of the contact 523 is spherical.

[0029] The base 51 includes a base body 511, a flange 513 connected to one edge of the base body 511, and a stop plate 512 connected inside the base body 511. The base body 511 has a hollow structure. The stop plate 512 is connected to the inner wall of the base body 511. The stop plate 512 and the base body 511 together form a bottom groove 514 and a surface groove 515. The openings of the bottom groove 514 and the surface groove 515 face opposite directions. The flange 513 is located near the opening of the surface groove 515. In addition, the stop plate 512 also has a clearance hole 5121 in the middle.

[0030] During assembly, the main body segment 521 of terminal 52 is mounted on stop plate 512. The functional segment 522 and contact 523 of terminal 52 are disposed inside bottom groove 514, and the end of main body segment 521 away from functional segment 522 extends into surface groove 515. The terminals 52 of contact head 50 are divided into two groups, one group being a first terminal group 524 and the other group being a second terminal group 525. The terminals 52 of the first terminal group 524 and the terminals 52 of the second terminal group 525 are evenly spaced around clearance hole 5121. The contact 523 on the terminals 52 of the second terminal group 525 faces outward, and the contact 523 on the terminals 52 of the first terminal group 524 faces inward. The first terminal group 524 is disposed around the second terminal group 525.

[0031] The first knob component 60 includes a first knob body 61 and a first connector 62 mounted on the first knob body 61. The first connector 62 is a metal part and is installed and fixed to the first knob body 61 by means of insert molding. The first knob body 61 includes an inner ring 612, an outer ring 611 surrounding the outer side of the inner ring 612, and a connecting plate 613 connecting the inner ring 612 and the outer ring 611. The inner ring 612 and the outer ring 611 are both cylindrical. A fixing hole 614 is formed on the inner ring 612. The outer side of the inner ring 612 and the inner side of the outer ring 611 are separated by a certain distance. The connecting plate 613 is connected to the bottom position of the inner ring 612 and the outer ring 611. The connecting plate 613, the inner ring 612 and the outer ring 611 form a transition groove 615. The first connector 62 includes a first inner ring 621 and two first connecting brackets 622 connected to opposite positions of the first inner ring 621, and two first connecting heads 623 respectively connected to the ends of the two first connecting brackets 622. The outer surface of the first connecting head 623 is spherical, and the first connecting head 623 is provided with a first mating groove 624. The groove wall of the first mating groove 624 is arc-shaped, and the openings of the first mating grooves 624 on the two first connecting heads 623 are arranged in opposite directions. During assembly, the first inner ring 621 and part of the first connecting brackets 622 are embedded inside the inner ring 612. The end of the first connecting bracket 622 away from the first inner ring 621 and the first connecting head 623 are exposed outside the inner ring 612 and extend into the transition groove 615. The first inner ring 621 is distributed around the fixing hole 614 for avoidance.

[0032] The second knob component 70 includes a second knob body 71 and a second connector 72 mounted on the second knob body 71. The second connector 72 is a metal component and is installed and fixed to the second knob body 71 by an insert molding method. The second knob body 71 has a slot 711 extending downward from top to bottom. The second knob body 71 has an assembly hole 713 extending downward through the center of the bottom of the slot 711. A retaining ring 712 is provided on the outer peripheral surface of the second knob body 71 near the bottom. The second connector 72 includes a second inner ring 721 and two second connecting brackets 722 connected to opposite positions of the second inner ring 721, and two second connector heads 723 respectively connected to the ends of the two second connecting brackets 722. The outer surface of the second connector head 723 is spherical, and the second connector head 723 is provided with a second mating groove 724. The groove wall of the second mating groove 724 is arc-shaped, and the openings of the first mating grooves 624 on the two second connector heads 723 are arranged opposite each other. During assembly, the second inner ring 721 and part of the second connecting bracket 722 of the second connector 72 are embedded inside the second knob body 71. The end of the second connecting bracket 722 away from the second inner ring 721 and the second connecting head 723 extend into the slot 711. Furthermore, the second inner ring 721 is distributed around the assembly hole 713 to avoid collisions.

[0033] The limiting component 80 includes a support plate 81, a connecting rod 82 mounted on the support plate 81, and a locking screw 83 mounted on the connecting rod 82. The bottom of the connecting rod 82 is provided with a screw hole 821.

[0034] When assembling the lamp, the base body 511 of the base 51 on the contact head 50 is inserted into the through hole 411 of the positioning sleeve 41 of the lens 40. The base body 511 and the positioning sleeve 41 are fixed together by glue or other means. The flange 513 on the base 51 abuts against the upper end face of the positioning sleeve 41. The groove opening of the bottom groove 514 faces downward. The base body 511 and the positioning sleeve 41 pass through the through hole 34 of the lamp panel body 33 and are embedded into the inner groove 12. The outer ring 611 of the first knob body 61 is embedded into the bottom groove 514. The first knob body 61 can be rotated and adjusted. During the rotation of the first knob body 61, the first connector 623 is driven to rotate and adjust synchronously. Furthermore, the contact point 523 of the first terminal group 524 of the contact head 50 is located on the rotation path of the first connector 623. The second knob body 71 of the second knob component 70 passes through the fixing hole 614 of the inner ring 612 and abuts against the stop plate 512. The retaining ring 712 of the second knob body 71 abuts against the bottom of the first knob body 61 from below to limit the first knob body 61. The contact point 523 of the second terminal group 525 of the contact head 50 is located on the rotation path of the second connector 723. The support plate 81 of the limiting component 80 is installed at the bottom of the inner groove 12. The connecting rod 82 passes through the clearance hole 5121 of the base 51 and extends into the slot 711 of the second knob body 71. The locking screw 83 passes through the assembly hole 713 of the second knob component 70 and is installed in conjunction with the screw hole 821 of the connecting rod 82 to limit the second knob body 71. The inner ring 612, outer ring 611, connecting plate 613 on the first knob body 61 and the slot 711 on the second knob body 71 separate the second terminal group 525 and the first terminal group 524 into different spaces, effectively reducing the risk of short circuit.

[0035] The control circuit board includes a voltage acquisition circuit 92, a control chip 91, a voltage output circuit 93, and a switch circuit 94. The first terminal group 524 is connected to the voltage acquisition circuit 92, and the second terminal group 525 is connected to the voltage output circuit 93. The first LED light group 31 and the second LED light group 32 are connected between the voltage output circuit 93 and the switch circuit 94. The switch circuit 94 is connected to the control chip 91. By adjusting the state of the first knob 60, two terminals 52 of the first terminal group 524 are turned on. The control chip 91 acquires the voltage information of the voltage acquisition circuit 92, and then controls the switch circuit 94 to work, so that one or two of the first LED light group 31 and the second LED light group 32 are lit, thereby adjusting the color temperature of the lamp. By adjusting the state of the second knob 70, two terminals 52 of the second terminal group 525 are turned on, thereby adjusting the power of the lamp.

[0036] Specifically, the first terminal group 524 is further divided into input terminals 5241 and output terminals 5242. The input terminals 5241 and output terminals 5242 correspond one-to-one and are arranged at 180 degrees to each other. The voltage acquisition circuit 92 includes several access resistors and sampling resistors with different resistance values. The access resistors correspond one-to-one with the input terminals 5241. The input terminals of the access resistors are connected to the power supply after being associated. The input terminals of the access resistors are respectively connected to the input terminals 5241. The output terminals 5242 are connected in parallel and then in series with the sampling resistor. The negative terminal of the sampling resistor is grounded. The sampling pin of the control chip 91 is connected in parallel with the positive terminal of the sampling resistor.

[0037] The second terminal group 525 is further divided into input terminal 5251 and output terminal 5252. Input terminal 5251 and output terminal 5252 correspond one-to-one. The corresponding input terminal 5251 and output terminal 5252 are arranged at 180 degrees to each other. The input terminal 5251 is connected in parallel to the output terminal of the LED driver power supply. The voltage output circuit 93 includes several voltage regulating resistors with different resistance values. The voltage regulating resistors correspond one-to-one with the output terminal 5252. The positive terminal of each voltage regulating resistor is connected to an output terminal 5252. The negative terminals of the voltage regulating resistors are connected in parallel and simultaneously connected to the input terminals of the first LED group 31 and the second LED group 32.

[0038] The switching circuit 94 includes two control switches. The control terminals of the two control switches are respectively connected to different pins of the control chip 91. The input terminal of one control switch is connected to the output terminal of the first LED group 31, and the input terminal of the other control switch is connected to the output terminal of the second LED group 32. The output terminals of the two control switches are grounded.

[0039] When adjusting the color temperature, the first knob 60 is rotated so that the two first connectors 623 on both sides of the first connector 62 are respectively attached to an input terminal 5241 and an output terminal 5242 corresponding to the input terminal 5241. This causes the connection resistor corresponding to the input terminal 5241 to be turned on. The control chip 91 collects the voltage of the sampling resistor and controls the on / off state of the two control switches according to the voltage of the sampling resistor. This causes one or both of the high color temperature first LED group 31 and the low color temperature second LED group 32 to be lit, thereby adjusting the color temperature. When the first connector 62 is installed in conjunction with the terminal 52, the first connector 623 on the first connector 62 slides over and presses against the main body section 521 of the terminal 52. When the contact 523 is aligned with the first mating groove 624, the main body section 521 springs back, and the contact 523 abuts against the groove wall of the first mating groove 624. The spherical contact 523 and the first connector 623 can make the fit smoother, and at the same time, the contact 523 can be smoothly withdrawn from the first mating groove 624.

[0040] When adjusting the power, rotate the second knob 70 so that the two second connectors 723 on both sides of the second connector 72 respectively attach to an input terminal 5251 and a lead-out terminal 5252 corresponding to the input terminal 5251, thereby turning on the voltage regulating resistor corresponding to the input terminal 5251, and adjusting the power of the first LED group 31 and the low color temperature second LED group 32. When the second connector 72 is installed with the terminal 52, the second connector 723 on the second connector 72 slides over and presses against the main body section 521 of the terminal 52. When the contact 523 is aligned with the second mating groove 724, the main body section 521 springs back, and the contact 523 abuts against the groove wall of the second mating groove 724.

[0041] The beneficial effects of the color temperature adjustable energy-saving lamp of the present invention are as follows: By setting several terminals 52 on the contact head 50, the terminals 52 of the contact head 50 are divided into two groups, one group being the first terminal group 524 and the other group being the second terminal group 525. A first connecting member 62 is set on the first knob 60, and a second connecting member 72 is set on the second knob 70. Both the first knob 60 and the second knob 70 can be rotated and adjusted. By adjusting the state of the first knob 60, two terminals of the first terminal group 524 are made conductive, and the controller 20 controls one or two of the first LED light group 31 and the second LED light group 32 to light up, thereby adjusting the color temperature of the lamp; by adjusting the state of the second knob 70, two terminals 52 of the second terminal group 525 are made conductive, thereby adjusting the power of the lamp. The entire adjustment process can be completed quickly, the overall structure is flexible, and it is highly practical.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A color temperature adjustable energy-saving lamp, comprising a heat sink body, a controller installed at the upper end of the heat sink body, an LED dual-color temperature lamp board installed inside the heat sink body, and a lens installed at the bottom of the heat sink body, characterized in that, It also includes a contact head installed in the middle of the lens, a first knob component passing through the lens, a second knob component passing through the first knob component and limiting the first knob component, and a limiting component limiting the second knob component. Both the first knob component and the second knob component can be rotated and adjusted. The controller is equipped with a control circuit board. By cooperating with the first knob and the second knob and the contact head, the working state of the control circuit board is adjusted, thereby adjusting the working state of the LED dual-color temperature lamp board. The contact head includes a base and several terminals mounted on the base. Each terminal includes a main body segment, a functional segment connected to one end of the main body segment, and a contact point connected to the functional segment. The terminals of the contact head are divided into two groups, one group being a first terminal group and the other group being a second terminal group. The terminals of the first terminal group and the terminals of the second terminal group are evenly spaced around the center of the base. The first knob component includes a first knob body and a first connector mounted on the first knob body. The first connector includes a first inner ring and two first connecting frames connected to opposite positions of the first inner ring, and two first connectors respectively connected to the ends of the two first connecting frames. The contact point of the first terminal group of the contact head is located on the rotation path of the first connector. The second knob component includes a second knob body and a second connector mounted on the second knob body. The second connector includes a second inner ring and two second connecting frames connected to opposite positions of the second inner ring, and two second connectors respectively connected to the ends of the two second connecting frames. The contact point of the second terminal group of the contact head is located on the rotation path of the second connector.

2. The color temperature adjustable energy-saving lamp according to claim 1, characterized in that, The outer surface of the contact point is spherical, the outer surface of the first connector is spherical, the first connector is provided with a first mating groove, and the groove wall of the first mating groove is arc-shaped; the outer surface of the second connector is spherical, the second connector is provided with a second mating groove, and the groove wall of the second mating groove is arc-shaped.

3. The color temperature adjustable energy-saving lamp according to claim 2, characterized in that, The contacts on the terminals of the second terminal group face outwards, and the contacts on the terminals of the first terminal group face inwards. Furthermore, the first terminal group is located around the second terminal group. The first mating grooves on the two first connectors are arranged in opposite directions, and the first mating grooves on the two second connectors are arranged opposite to each other.

4. The color temperature adjustable energy-saving lamp according to claim 1, characterized in that, The functional segment is curved, and the contact point is connected to the convex surface of the functional segment.

5. The color temperature adjustable energy-saving lamp according to claim 1, characterized in that, The base includes a base body and a stop plate connected inside the base body. The base body has a hollow structure. The stop plate is connected to the inner wall of the base body. The stop plate and the base body together form a bottom groove and a surface groove. The openings of the bottom groove and the surface groove face opposite directions. The opening of the bottom groove faces downward. The main body segment of the terminal is mounted on the stop plate. The functional segment and contact of the terminal are located inside the bottom groove. Furthermore, the end of the main body segment away from the functional segment extends into the surface groove.

6. The color temperature adjustable energy-saving lamp according to claim 5, characterized in that, The lens has a positioning sleeve in the middle, and the positioning sleeve has a through hole that passes through the positioning sleeve along the central axis of the lens. The base also includes a flange connected to one edge of the base body, and the flange is located at the groove opening of the contact head. The base body of the contact head is inserted into the through hole of the positioning sleeve of the lens, and the flange on the base abuts against the upper end face of the positioning sleeve.

7. The color temperature adjustable energy-saving lamp according to claim 5, characterized in that, The first knob body includes an inner ring, an outer ring surrounding the inner ring, and a connecting plate connecting the inner ring and the outer ring. A fixing hole is formed on the inner ring. A retaining ring is provided on the outer peripheral surface of the second knob body near the bottom. During assembly, the outer ring of the first knob body is inserted into the bottom groove, and the second knob body of the second knob component passes through the fixing hole of the inner ring and abuts against the stop plate. The retaining ring of the second knob body abuts against the bottom of the first knob body from below to limit the position of the first knob body.

8. The color temperature adjustable energy-saving lamp according to claim 7, characterized in that, The connecting plate, inner ring, and outer ring together form a transition groove. The first inner ring and part of the first connecting bracket of the first connector are embedded inside the inner ring. The end of the first connecting bracket away from the first inner ring and the first connecting head are exposed outside the inner ring and extend into the transition groove.

9. The color temperature adjustable energy-saving lamp according to claim 1, characterized in that, The second knob body has a slot extending from top to bottom. The second inner ring of the second connector and part of the second connecting bracket are embedded inside the second knob body. The end of the second connecting bracket away from the second inner ring and the second connector head extend into the slot.

10. The color temperature adjustable energy-saving lamp according to claim 1, characterized in that, The LED dual-color temperature lamp board is equipped with a first LED group and a second LED group. The first LED group uses high color temperature LED beads, and the second LED group uses low color temperature LED beads. The control circuit board includes a voltage acquisition circuit, a control chip, a voltage output circuit, and a switching circuit. The first terminal group is connected to the voltage acquisition circuit, and the second terminal group is connected to the voltage output circuit. The first LED group and the second LED group are connected between the voltage output circuit and the switching circuit. The switching circuit is connected to the control chip. By adjusting the state of the first knob, two terminals of the first terminal group are turned on. The control chip acquires the voltage information from the voltage acquisition circuit and controls the switching circuit to work.

Images