Color-changing LED lighting circuit board and control method thereof

Abstract

The invention provides a color-changing LED lighting circuit board and a control method thereof. The color-changing LED lighting circuit board comprises a lampshade, a lamp cover frame is arranged at the opening end of the lampshade, a clamping groove is formed in the inner side of the lamp cover frame, a concave lens is installed on the inner side of the lamp cover frame, a circuit board is further arranged in the lampshade, and a disc is arranged above the circuit board; a plurality of through holes distributed in an annular array are formed in the surface of the circuit board, two supporting rods are symmetrically arranged in the through holes, a movable lamp holder is arranged between the two supporting rods, and a fixed lamp holder arranged in an annular mode is arranged on the inner side of the movable lamp holder; 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 both electrically connected with the movable lamp holder and the fixed lamp holder. The lantern ring rotates to drive the disc to rotate through the line pipe, and the movable lamp holder is pushed to deflect through the transition cambered surface. Rotation motion is converted into accurate angle change through an irregular transition cambered surface.

Description

Technical Field

[0001] The present invention relates to a color-changing LED lighting circuit board and a control method thereof, and particularly relates to the technical field of lighting circuit boards. Background Art

[0002] With the rapid development of LED lighting technology, dimmable and color-tunable intelligent lighting systems have been widely used in commercial, household, exhibition and other fields; traditional LED lighting devices mainly achieve brightness or color changes through electronic dimming (such as PWM control), but there are still limitations in the adjustment of the light direction; in the prior art, dynamic lighting effects usually rely on the combination of multiple LED modules with fixed angles or mechanical rotation structures to achieve. Problems existing in the prior art

[0003] 1. Relying on the static arrangement of multiple LED modules, the light direction cannot be continuously adjusted, and the light effect is rigid.

[0004] 2. Traditional lens or reflector cup designs cannot simultaneously meet wide-angle uniform lighting and precise direction control, and it is easy to produce over-bright in the center or dark areas at the edges.

[0005] 3. It is difficult to repair the complex integrated structure (such as an internal motor) after damage. Summary of the Invention

[0006] Object of the Invention: To provide a color-changing LED lighting circuit board and a control method thereof to solve the above problems existing in the prior art.

[0007] Technical Solution: A color-changing LED lighting circuit board includes:

[0008] A lamp cover, a lamp cover frame is provided at the open end of the lamp cover, a card slot is provided inside the lamp cover frame and a concave lens is installed, a circuit board is further provided inside the lamp cover, and a disc is provided above the circuit board;

[0009] A plurality of through holes are provided on the surface of the circuit board and are distributed in a circular array, two support rods are symmetrically arranged inside the through holes, and a movable lamp holder is provided between the two support rods; a fixed lamp holder is annularly arranged inside the movable lamp holder; a positive electrode line and a negative electrode line are further provided on the surface of the circuit board, and both the positive electrode line and the negative electrode line are electrically connected to the movable lamp holder and the fixed lamp holder;

[0010] A wire tube penetrating through the lamp cover is provided at the axis of the disc, a collar is sleeved on the exposed end of the wire tube, and a hanging ring for fixing the lamp cover is further provided on the outer edge of the collar; an irregular transition arc surface is provided at the edge of the disc, and the irregular transition arc surface contacts the movable lamp holder;

[0011] Above the lampshade, there is a boss for locking the rotation angle of the collar. Inside the lampshade, there is also a drive compartment for placing the driver.

[0012] In a further embodiment, the lampshade has a bowl-shaped structure. The lamp cover frame and the lampshade are connected by a magnetic attraction structure. The circuit board is fixed inside the lampshade through a snap structure. On the side of the lamp cover frame facing the lampshade, there are a plurality of magnets, and a magnetic conduction ring is provided at the open end of the lampshade.

[0013] In a further embodiment, there is a gap between the through hole and the movable lamp socket. The support rod is movably matched with the movable lamp socket, and the support rod is fixedly connected to the through hole.

[0014] In a further embodiment, the fixed lamp socket and the movable lamp socket are provided with RGB LED beads. The positive electrode line and the negative electrode line are electrically connected to the driver, and the driver is connected to an external power supply through a wire inside the wire tube.

[0015] In a further embodiment, the collar is axially and circumferentially fixed to the wire tube through a locking pin. The wire tube is in clearance fit with the drive compartment. The drive compartment is located above the disc and is in circumferential rotational fit with the disc.

[0016] A control method for a color-changing LED lighting circuit board is used to implement a color-changing LED lighting circuit board, including the following steps:

[0017] Step 1: The external power supply supplies power to the driver through the wire inside the wire tube. The driver receives an external control signal and adjusts the current of the RGB LED beads.

[0018] Step 2: The fixed lamp socket maintains a fixed angle to provide basic lighting. The movable lamp socket adjusts the local light direction according to the inclination angle, and the light is superimposed with the light of the fixed lamp socket to form a dynamic light effect.

[0019] Step 3: All the light is diffused by the concave lens to eliminate the LED dot-shaped light spots and achieve soft and color-uniform lighting.

[0020] Step 4: When the user rotates the collar, the collar drives the wire tube to rotate synchronously through the locking pin. The wire tube 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 socket changes. If a certain part of the transition arc surface bulges, the contact point moves outward, pushing the movable lamp socket to incline inward. If the transition arc surface is concave, the contact point moves inward, and the movable lamp socket returns to the upright position. The movable lamp socket is connected to the circuit board through a support rod, and the support rod allows the angle of the movable lamp socket to deflect.

[0022] Step 6: The tilted movable lamp holder changes the angle of incidence of the RGB LED light on the concave lens. The light from the outward-tilted lamp holder diverges laterally through the concave lens; the light from the inward-tilted lamp holder converges towards the center; after the convex platform locks the position of the collar, the refraction direction of the light is fixed.

[0023] Beneficial effects: The present invention proposes a color-changing LED lighting circuit board and its control method. The rotation of the collar drives the disc to rotate through the wire tube, and the movable lamp holder is pushed to deflect through the transition arc surface; the irregular transition arc surface is used to convert the rotational motion into an accurate angular change (the convex part pushes the tilt angle up to 15°±2°), and a gap of 0.5-1 mm is reserved between the through hole and the lamp holder to ensure smooth rotation without friction; no additional motor drive is required.

[0024] The concave lens cooperates with the movable lamp holder and the fixed lamp holder to eliminate chromatic dispersion and glare; the concave lens is fixed to the inner side of the lamp cover frame through a card slot to form the first layer of light diffusion and eliminate the direct glare of the LED.

[0025] The bowl-shaped lampshade structure is adopted in cooperation with the magnetic adsorption type lamp cover frame (magnet + magnetic conductive ring) to achieve quick and lossless disassembly and assembly, which is convenient for quickly replacing the lamp beads or lenses. Description of the Drawings

[0026] Figure 1 It is a three-dimensional view of the present invention.

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

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

[0029] Figure 4 It is a schematic diagram of the main view semi-section of the present invention.

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

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

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

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

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

[0035] Figure 10 It is a schematic diagram of the main view semi-section of the lamp cover frame of the present invention.

[0036] Figure 11 It is a three-dimensional view of the lamp cover frame of the present invention.

[0037] The attached components are marked as: 1. Lamp shade; 2. Lamp cover frame; 3. Concave lens; 4. Circuit board; 5. Fixed lamp socket; 6. Disc; 7. Movable lamp socket; 11. Boss; 12. Drive cabin; 13. Magnetic conductive ring; 21. Magnet; 41. Through hole; 42. Positive circuit; 43. Negative circuit; 61. Wire tube; 62. Collar; 411. Support rod; 621. Hanging ring. Specific implementation mode

[0038] To solve the problems existing in the prior art, the present invention realizes the dynamic changes of the light direction and the color of the RGB LED lamp beads through a color-changing LED lighting circuit board and its control method.

[0039] The following further specifically describes this solution through examples and in conjunction with the drawings.

[0040] In this application, a color-changing LED lighting circuit board is proposed. The lamp shade 1 is in a bowl-shaped structure. The lamp cover frame 2 is connected to the lamp shade 1 through a magnetic attraction structure. The magnetic conductive ring 13 is at the open end of the lamp shade 1. The lamp cover frame 2 is provided at the open end of the lamp shade 1. A plurality of magnets 21 are provided on the side of the lamp cover frame 2 facing the lamp shade 1. A card slot is provided inside the lamp cover frame 2 and a concave lens 3 is installed. A circuit board 4 is also provided inside the lamp shade 1. The circuit board 4 is fixed inside the lamp shade 1 through a snap structure. A disc 6 is provided above the circuit board 4. The radius of curvature R of the concave lens 3 is 120 mm and the refractive index is 1.59, expanding 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 plano lens as needed.

[0041] A plurality of through holes 41 distributed in a circular array are provided on the surface of the circuit board 4. A gap is left between the through holes 41 and the movable lamp socket 7 (to prevent friction contact between the movable lamp socket 7 and the edge of the circuit board 4 when the movable lamp socket 7 rotates). Two support rods 411 are symmetrically arranged in the through holes 41. The support rods 411 are movably matched with the movable lamp socket 7, and the support rods 411 are fixedly connected to the through holes 41.

[0042] There is a movable lamp holder 7 between two support rods 411. An annularly arranged fixed lamp holder 5 is provided inside the movable lamp holder 7. On the surface of the circuit board 4, there are also a positive circuit 42 and a negative circuit 43. Both the positive circuit 42 and the negative circuit 43 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 lamp beads. The positive circuit 42 and the negative circuit 43 are electrically connected to a driver. The fixed lamp holders 5 are arranged in a ring to provide basic lighting (the light flux accounts for 60%); the movable lamp holder 7 provides dynamic supplementary lighting (the light flux accounts for 40%), and fills the lighting blind area of the fixed lamp holder through angle change; the mixing of two-color-temperature RGB LEDs (adjustable from 3000K to 6500K) realizes full-spectrum coverage.

[0043] A wire tube 61 passing through the lamp shade 1 is provided at the axis of the disc 6. The wire tube 61 is in clearance fit with the drive cabin 12. A collar 62 is sleeved on the exposed end of the wire tube 61. The collar 62 is axially and circumferentially fixed to the wire tube 61 through a locking pin. A hanging ring 621 for fixing the lamp shade 1 is further provided on the outer edge of the collar 62. An irregular transition arc surface is provided at the edge of the disc 6, and the irregular transition arc surface contacts the movable lamp holder 7.

[0044] Above the lamp shade 1, there is a boss 11 for locking the rotation angle of the collar 62. Inside the lamp shade 1, there is also a drive cabin 12 for placing the driver. The driver is connected to an external power supply through a wire inside the wire tube 61. The drive cabin 12 is located above the disc 6 and is in circumferential rotational fit with the disc 6 (to prevent axial movement when the disc 6 rotates).

[0045] A control method for a color-changing LED lighting circuit board is used to implement a color-changing LED lighting circuit board, including the following steps:

[0046] Step 1: The external power supply supplies power to the driver through the wire inside the wire tube 61. The driver receives an external control signal (such as a PWM dimming signal) and adjusts the current of the RGB LED (red, green, and blue lights are independently controlled, and the mixing ratio determines the output color) lamp beads.

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

[0048] Step 3: All the light is diffused by the concave lens 3 to eliminate the LED dot-shaped light spots and achieve soft and color-uniform lighting.

[0049] Step 4: When the user rotates the collar 62, the collar 62 drives the wire tube 61 to rotate synchronously through the locking pin. The wire tube 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 there is a convexity at a certain place on the transition arc surface, the contact point moves outward, pushing the movable lamp holder 7 to incline inward; if the transition arc surface is concave, the contact point moves inward, and the movable lamp holder 7 returns to the upright position; 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 in angle.

[0051] Step 6: The inclination of the movable lamp holder 7 changes the angle of incidence of the RGB LED light on the concave lens 3. When the lamp holder inclines outward, the light diverges laterally through the concave lens 3; when the lamp holder inclines inward, the light converges towards the center; after the boss 11 locks the position of the collar 62, the refraction direction of the light is fixed.

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

Claims

1. A color-changing LED lighting circuit board, comprising: Lamp shade, a lamp cover frame is provided at the open end of the lamp shade, a clamping groove is provided inside the lamp cover frame and a concave lens is installed, a circuit board is further provided inside the lamp shade, and a disc is provided above the circuit board; It is characterized in that a plurality of through holes distributed in an annular array are provided on the surface of the circuit board, two support rods are symmetrically arranged in the through holes, and a movable lamp holder is provided between the two support rods. An annularly arranged fixed lamp holder is provided inside the movable lamp holder; a positive electrode line and a negative electrode line are further provided on the surface of the circuit board, and both the positive electrode line and the negative electrode line are electrically connected to the movable lamp holder and the fixed lamp holder; A wire tube penetrating the lamp shade is provided at the axis of the disc, a collar is sleeved on the exposed end of the wire tube, and a hanging ring for fixing the lamp shade is further provided on the outer edge of the collar; an irregular transition arc surface is provided at the edge of the disc, and the irregular transition arc surface contacts the movable lamp holder; A boss for locking the rotation angle of the collar is provided above the lamp shade, and a drive chamber for placing a driver is further provided inside the lamp shade.

2. The color-changing LED lighting circuit board according to claim 1, wherein, The lamp shade has a bowl-shaped structure, the lamp cover frame is connected to the lamp shade through a magnetic attraction structure, and the circuit board is fixed inside the lamp shade through a buckle structure; a plurality of magnets are provided on the surface of the lamp cover frame facing the lamp shade, and a magnetic conduction ring is provided at the open end of the lamp shade.

3. The color-changing LED lighting circuit board 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 matched with the movable lamp holder, and the support rod is fixedly connected to the through hole.

4. The color-changing LED lighting circuit board according to claim 1, wherein The fixed lamp holder and the movable lamp holder are provided with RGB LED lamp beads; the positive electrode line and the negative electrode line are electrically connected to the driver, and the driver is connected to an external power supply through a wire inside the wire tube.

5. The color-changing LED lighting circuit board according to claim 1, characterized in that, The collar is axially and circumferentially fixed to the wire tube through a locking pin; the wire tube is in clearance fit with the drive chamber, and the drive chamber is located above the disc and is in circumferential rotational fit with the disc.

6. A control method for a color-changing LED lighting circuit board, which is used to implement the color-changing LED lighting circuit board according to any one of claims 1-5, characterized in that, It includes the following steps: Step 1: The external power supply supplies power to the driver through the wire inside the wire tube; the driver receives an external control signal and adjusts the current of the RGB LED lamp beads; Step 2: The fixed lamp holder maintains a fixed angle to provide basic lighting; the movable lamp holder adjusts the local light direction according to the inclination angle, and the light is superimposed with the light of the fixed lamp holder to form a dynamic light effect; Step 3: All the light is diffused by the concave lens to eliminate the LED dot-shaped light spots and achieve soft and color-uniform lighting; Step 4: When the user rotates the collar, the collar drives the wire tube to rotate synchronously through the locking pin; the wire tube 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 place on the transition arc surface bulges, the contact point moves outwards, pushing the movable lamp holder to incline inwards; if the transition arc surface is sunken, the contact point moves inwards and the movable lamp holder returns to the original position; the movable lamp holder is connected to the circuit board through the support rod, and the support rod allows the angle of the movable lamp holder to deflect; Step 6: The inclination of the movable lamp holder changes the incident angle of the RGB LED light on the concave lens. When the lamp holder inclines outwards, the light is diverged to the side by the concave lens; when the lamp holder inclines inwards, the light converges towards the center; after the convex platform locks the position of the collar, the refraction direction of the light is fixed.

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