A color-changing LED lighting device and a control method thereof

Abstract

The application provides a color-changing LED lighting device and a control method thereof, which comprises a lampshade, an open end of the lampshade is provided with a lamp cover frame, an inner side of the lamp cover frame is provided with a clamping groove and is installed with a concave lens, an inner side of the lampshade is further provided with a circuit board, and an upper side of the circuit board is provided with a disc; a surface of the circuit board is provided with a plurality of through holes which are arranged in an annular array, the through holes are provided with two support rods which are symmetrically arranged, an inner side of the two support rods is provided with a movable lamp holder, and an inner side of the movable lamp holder is provided with a fixed lamp holder which is arranged in an annular manner; the surface of the circuit board is further provided with a positive electrode circuit and a negative electrode circuit, and the positive electrode circuit and the negative electrode circuit are electrically connected with the movable lamp holder and the fixed lamp holder; a sleeve ring rotates to drive the disc to rotate, and the movable lamp holder is deflected through a transition arc surface; and the irregular transition arc surface is used to convert the rotary motion into accurate angular change.

Description

Technical Field

[0001] This invention relates to a color-changing LED lighting device and its control method, and particularly to the field of lighting device technology. Background Technology

[0002] With the rapid development of LED lighting technology, dimmable and color-adjustable intelligent lighting systems are widely used in commercial, residential, and exhibition fields. Traditional LED lighting devices mainly achieve brightness or color changes through electronic dimming (such as PWM control), but there are still limitations in adjusting the direction of light. In existing technologies, dynamic lighting effects usually rely on combinations of multiple LED modules at fixed angles or mechanical rotation structures. These existing technologies have certain problems.

[0003] 1. It relies on a static arrangement of multiple LED modules, making it impossible to continuously adjust the direction of the light, and the light effect is monotonous.

[0004] 2. Traditional lens or reflector designs cannot simultaneously achieve wide-angle uniform illumination and precise directional control, easily resulting in overly bright centers or dark edges.

[0005] 3. Complex integrated structures (such as those with built-in motors) are difficult to repair once damaged. Summary of the Invention

[0006] Purpose of the invention: To propose a color-changing LED lighting device and its control method to solve the above-mentioned problems existing in the prior art.

[0007] Technical solution: A color-changing LED lighting device, comprising:

[0008] The lampshade has a lamp cover frame at its open end, a slot inside the lamp cover frame and a concave lens installed therein, and a circuit board inside the lampshade, with a disc above the circuit board.

[0009] The circuit board has multiple through holes arranged in a ring array on its surface. Two support rods are symmetrically arranged in each through hole. A movable lamp holder is provided between the two support rods. A fixed lamp holder is arranged in a ring on the inner side of the movable lamp holder. The circuit board also has positive and negative lines on its surface. Both the positive and negative lines are electrically connected to the movable and fixed lamp holders.

[0010] A conduit is provided along the axis of the disc, passing through the lampshade. A collar is fitted onto the exposed end of the conduit, and a hanging ring for fixing the lampshade is provided on the outer edge of the collar. An irregular transition arc surface is provided on the edge of the disc, and the irregular transition arc surface contacts the movable lamp holder.

[0011] The lampshade has a boss on its upper part for locking the rotation angle of the collar, and the lampshade also has a drive compartment for housing the driver.

[0012] In a further embodiment, the lampshade has a bowl-shaped structure, the lamp cover frame is connected to the lampshade by a magnetic attraction structure, and the circuit board is fixed inside the lampshade by a snap-fit ​​structure; the lamp cover frame is provided with multiple magnets on the side facing the lampshade, and the lampshade has a magnetic ring at the opening end.

[0013] In a further embodiment, a gap is left between the through hole and the movable lamp holder, the support rod is movably engaged with the movable lamp holder, and the support rod is fixedly connected to the through hole.

[0014] In a further embodiment, the fixed lamp holder and the movable lamp holder are equipped with RGB LED beads; the positive and negative lines are electrically connected to the driver, and the driver is connected to an external power source through wires inside the conduit.

[0015] In a further embodiment, the collar is fixed axially and circumferentially to the conduit by a locking pin; the conduit is clearance-fitted with the drive compartment, and the drive compartment is located above the disk and rotates circumferentially with the disk.

[0016] A control method for a color-changing LED lighting device, comprising the following steps:

[0017] Step 1: The external power supply supplies power to the driver through the wires inside the conduit; the driver receives external control signals and adjusts the current of the RGB LED beads;

[0018] Step 2: Fixed lamp holders maintain a fixed angle to provide basic lighting; movable lamp holders adjust the direction of local light according to the tilt angle, and superimpose the light from the fixed lamp holders to create dynamic lighting effects;

[0019] Step 3: All light is diffused by the concave lens, eliminating the dot-like light spots of the LEDs and achieving soft and uniform color lighting;

[0020] Step 4: When the user rotates the collar, the collar drives the conduit to rotate synchronously through the locking pin; the conduit is fixedly connected to the disc, and the disc rotates accordingly.

[0021] Step 5: During the rotation of the irregular transition arc surface of the disc, the position of the contact point with the movable lamp holder changes; if a certain part of the transition arc surface is raised, the contact point moves outward, pushing the movable lamp holder to tilt inward; if the transition arc surface is concave, the contact point retracts inward, and the movable lamp holder returns to the center; the movable lamp holder is connected to the circuit board through a support rod, and the support rod allows the movable lamp holder to deflect at an angle.

[0022] Step 6: The tilted movable lamp holder changes the angle at which the RGB LED light enters the concave lens. The light rays tilted outwards from the lamp holder diverge to the side through the concave lens; the light rays tilted inwards from the lamp holder converge towards the center; after the locking ring of the boss is in position, the direction of light refraction is fixed.

[0023] Beneficial effects: This invention proposes a color-changing LED lighting device and its control method. The rotation of the collar drives the disk to rotate through the conduit, and the transition arc surface pushes the movable lamp holder to deflect. The irregular transition arc surface is used to convert the rotational motion into a precise angle change (the protrusion pushes the tilt angle to 15°±2°). A gap of 0.5-1mm is maintained between the through hole and the lamp holder to ensure smooth and frictionless rotation; no additional motor drive is required.

[0024] The concave lens works in conjunction with the movable and fixed lamp holders to eliminate dispersion and glare; the concave lens is fixed to the inside of the lamp cover frame through a slot, forming the first layer of light diffusion to eliminate direct LED glare.

[0025] The cup-shaped lampshade structure, combined with a magnetic lamp cover frame (magnet + magnetic ring), enables quick and non-destructive disassembly and assembly, facilitating rapid replacement of lamp beads or lenses. Attached Figure Description

[0026] Figure 1 This is a perspective view of the present invention.

[0027] Figure 2 This is a partial three-dimensional cross-sectional view of the present invention.

[0028] Figure 3 This is a distribution view of the lamp holders according to the present invention.

[0029] Figure 4 This is a front half-sectional view of the present invention.

[0030] Figure 5 This is a top partial sectional view of the present invention.

[0031] Figure 6 This is a partial cross-sectional view of the concave lens of the present invention.

[0032] Figure 7 This is a bottom view of the circuit board of the present invention.

[0033] Figure 8 This is a top view of the circuit board of the present invention.

[0034] Figure 9 This is a three-dimensional schematic diagram of the circuit board of the present invention.

[0035] Figure 10 This is a front half-sectional view of the lamp cover frame of the present invention.

[0036] Figure 11 This is a perspective view of the lamp cover frame of the present invention.

[0037] The attachments are marked as follows: 1. Lampshade; 2. Lamp cover frame; 3. Concave lens; 4. Circuit board; 5. Fixed lamp holder; 6. Disc; 7. Movable lamp holder; 11. Boss; 12. Drive compartment; 13. Magnetic ring; 21. Magnet; 41. Through hole; 42. Positive circuit; 43. Negative circuit; 61. Conduit; 62. Collar; 411. Support rod; 621. Hanging ring. Detailed Implementation

[0038] To address the problems existing in the prior art, the present invention provides a color-changing LED lighting device and its control method to achieve dynamic changes in the direction of light and the color of RGB LED beads.

[0039] The present solution will be further described in detail below through embodiments and with reference to the accompanying drawings.

[0040] This application proposes a color-changing LED lighting device, including a lampshade 1, which has a bowl-shaped structure. A lamp cover frame 2 is connected to the lampshade 1 via a magnetic attraction structure. A magnetic ring 13 is located at the open end of the lampshade 1. The lamp cover frame 2 is located at the open end of the lampshade 1. Multiple magnets 21 are located on the side of the lamp cover frame 2 facing the lampshade 1. A slot is provided on the inner side of the lamp cover frame 2, and a concave lens 3 is installed thereon. A circuit board 4 is also provided inside the lampshade 1. The circuit board 4 is fixed inside the lampshade 1 by a snap-fit ​​structure. A disk 6 is located above the circuit board 4. The concave lens 3 has a radius of curvature R = 120 mm and a refractive index of 1.59, which expands the divergence angle of the point light source from 90° to 150°. The concave lens 3 can be replaced with a convex lens or a flat lens as needed.

[0041] The surface of the circuit board 4 is provided with a plurality of through holes 41 arranged in a ring array. A gap is left between the through holes 41 and the movable lamp holder 7 (to avoid friction contact between the movable lamp holder 7 and the edge of the circuit board 4 when it rotates). Two support rods 411 are symmetrically arranged in the through holes 41. The support rods 411 are movably engaged with the movable lamp holder 7 and are fixedly connected to the through holes 41.

[0042] A movable lamp holder 7 is provided between two support rods 411, and a fixed lamp holder 5 arranged in a ring is provided on the inner side of the movable lamp holder 7; the surface of the circuit board 4 is also provided with a positive line 42 and a negative line 43, both of which are electrically connected to the movable lamp holder 7 and the fixed lamp holder 5; the fixed lamp holder 5 and the movable lamp holder 7 are provided with RGB LED beads; the positive line 42 and the negative line 43 are electrically connected to the driver, and the fixed lamp holder 5 provides basic lighting (60% luminous flux) in a ring arrangement; the movable lamp holder 7 provides dynamic supplementary lighting (40% luminous flux), filling the lighting blind spots of the fixed lamp holder by changing the angle; dual-color temperature RGB LED mixing (adjustable from 3000K to 6500K) achieves full spectrum coverage.

[0043] A conduit 61 is provided along the axis of the disc 6, passing through the lampshade 1. The conduit 61 is fitted with the drive compartment 12 with a clearance. A collar 62 is sleeved on the exposed end of the conduit 61. The collar 62 is fixed to the conduit 61 axially and circumferentially by a locking pin. The outer edge of the collar 62 is also provided with a hanging ring 621 for fixing the lampshade 1. The edge of the disc 6 is provided with an irregular transition arc surface, which contacts the movable lamp holder 7.

[0044] The lampshade 1 has a boss 11 on its upper part for locking the rotation angle of the collar 62. The lampshade 1 also has a drive compartment 12 for placing the driver. The driver is connected to an external power source through a wire in the conduit 61. The drive compartment 12 is located above the disk 6 and rotates circumferentially with the disk 6 (to prevent axial movement when the disk 6 rotates).

[0045] A control method for a color-changing LED lighting device, comprising the following steps:

[0046] Step 1: The external power supply supplies power to the driver through the wires inside the conduit 61; the driver receives external control signals (such as PWM dimming signals) and adjusts the current of the RGB LEDs (red, green, and blue lights are controlled independently, and the mixing ratio determines the output color);

[0047] Step 2: The fixed lamp holder 5 maintains a fixed angle to provide basic lighting; the movable lamp holder 7 adjusts the direction of local light according to the tilt angle, and superimposes the light from the fixed lamp holder 5 to form a dynamic lighting effect;

[0048] Step 3: All light is diffused by concave lens 3, eliminating the dot-like light spots of the LEDs and achieving soft and uniform color lighting;

[0049] Step 4: When the user rotates the collar 62, the collar 62 drives the conduit 61 to rotate synchronously through the locking pin; the conduit 61 is fixedly connected to the disc 6, and the disc 6 rotates accordingly.

[0050] Step 5: During the rotation of the irregular transition arc surface of the disc 6, the position of the contact point with the movable lamp holder 7 changes; if a certain part of the transition arc surface is raised, the contact point moves outward, pushing the movable lamp holder 7 to tilt inward; if the transition arc surface is concave, the contact point retracts inward, and the movable lamp holder 7 returns to the center; the movable lamp holder 7 is connected to the circuit board 4 through the support rod 411, and the support rod 411 allows the movable lamp holder 7 to deflect at an angle;

[0051] Step 6: The tilted movable lamp holder 7 changes the angle at which the RGB LED light enters the concave lens 3. The light rays tilted outward from the lamp holder diverge to the side through the concave lens 3; the light rays converge towards the center from the inside of the lamp holder; after the boss 11 locks the position of the collar 62, the direction of light refraction is fixed.

[0052] As described above, although the invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A color-changing LED lighting device, comprising: The lampshade has a lamp cover frame at its open end, a slot inside the lamp cover frame and a concave lens installed therein, and a circuit board inside the lampshade, with a disc above the circuit board. The circuit board is characterized in that its surface is provided with a plurality of through holes arranged in a ring array, two support rods are symmetrically arranged in each through hole, a movable lamp holder is provided between the two support rods, and a fixed lamp holder is arranged in a ring on the inner side of the movable lamp holder; the surface of the circuit board is also provided with a positive line and a negative line, both of which are electrically connected to the movable lamp holder and the fixed lamp holder. A conduit is provided along the axis of the disc, passing through the lampshade. A collar is fitted onto the exposed end of the conduit, and a hanging ring for fixing the lampshade is provided on the outer edge of the collar. An irregular transition arc surface is provided on the edge of the disc, and the irregular transition arc surface contacts the movable lamp holder. The lampshade has a boss on its upper part for locking the rotation angle of the collar, and the lampshade also has a drive compartment for housing the driver.

2. The color-changing LED lighting device according to claim 1, characterized in that, The lampshade has a bowl-shaped structure. The lamp cover frame is connected to the lampshade by a magnetic structure. The circuit board is fixed inside the lampshade by a snap-fit ​​structure. The lamp cover frame has multiple magnets on the side facing the lampshade, and the lampshade has a magnetic ring at the opening end.

3. The color-changing LED lighting device according to claim 1, characterized in that, A gap is left between the through hole and the movable lamp holder, the support rod is movably fitted with the movable lamp holder, and the support rod is fixedly connected to the through hole.

4. A color-changing LED lighting device according to claim 1, characterized in that, The fixed lamp holder and the movable lamp holder are equipped with RGB LED beads; the positive and negative lines are electrically connected to the driver, and the driver is connected to an external power source through wires inside the conduit.

5. A color-changing LED lighting device according to claim 1, characterized in that, The collar is fixed to the conduit axially and circumferentially by a locking pin; the conduit is clearance-fitted with the drive compartment, which is located above the disc and rotates circumferentially with the disc.

6. A control method for a color-changing LED lighting device, used to implement the color-changing LED lighting device according to any one of claims 1-5, characterized in that, Includes the following steps: Step 1: The external power supply supplies power to the driver through the wires inside the conduit; the driver receives external control signals and adjusts the current of the LEDs in the movable and fixed lamp holders. Step 2: Fixed lamp holders maintain a fixed angle to provide basic lighting; movable lamp holders adjust the direction of local light according to the tilt angle, and superimpose the light from the fixed lamp holders to create dynamic lighting effects; Step 3: All light is diffused by the concave lens, eliminating the dot-like light spots of the LEDs and achieving soft and uniform color lighting; Step 4: When the user rotates the collar, the collar drives the conduit to rotate synchronously through the locking pin; the conduit is fixedly connected to the disc, and the disc rotates accordingly. Step 5: During the rotation of the irregular transition arc surface of the disc, the position of the contact point with the movable lamp holder changes; if a certain part of the transition arc surface is raised, the contact point moves outward, pushing the movable lamp holder to tilt inward; if the transition arc surface is concave, the contact point retracts inward, and the movable lamp holder returns to the center; the movable lamp holder is connected to the circuit board through a support rod, and the support rod allows the movable lamp holder to deflect at an angle. Step 6: The tilted movable lamp holder changes the angle at which the LED light enters the concave lens. The light rays tilting outwards from the lamp holder diverge to the side through the concave lens; the light rays converging inwards from the lamp holder converge towards the center; after the locking ring of the boss is in position, the direction of light refraction is fixed.

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