A multi-fixture interior ambience light

Abstract

The utility model discloses a kind of multi-fixture interior atmosphere lamp, including at least two light emitting lamp head, at least two light guide fiber, controller and mounting bracket, the light guide fiber is respectively arranged in mounting bracket, the end of light guide fiber is connected light emitting lamp head;The controller is set apart from the light emitting lamp head, a plurality of light emitting lamp head is electrically connected with the controller, drive chip is equipped in the controller, the drive chip controls the light emitting lamp head and makes light guide fiber present different color with different color light emission, the utility model has the following advantages and effects: one controller controls multiple light emitting lamp head and saves drive chip, and controller is set apart from light emitting lamp head, so that the heat generated around lamp pearl is greatly reduced, avoid producing color drift.

Description

Technical Field

[0001] This utility model relates to the field of ambient lighting technology for automobiles, and in particular to a multi-lamp interior ambient lighting system. Background Technology

[0002] With the widespread adoption of new energy vehicles, many car owners are gradually changing their considerations when purchasing a car. They are beginning to place more emphasis on passenger comfort, and ambient lighting, as a new type of interior lighting, is being used more and more in cars.

[0003] In existing automotive interior ambient lighting, each lamp head contains a lamp panel, and each lamp panel contains a chip that drives the LED lights on the lamp panel to emit light.

[0004] With each lamp head having a chip, the ambient lighting is designed in this way. However, the extensive use of ambient lighting in interiors increases production costs. Furthermore, research shows that excessive heat generated by ambient lighting can cause color drift in LEDs due to the increased ambient temperature. The main heat source of ambient lighting is the chip inside the lamp board. When the chip operates, it generates heat, which raises the temperature inside the lamp board. Under normal operating conditions, the LEDs will experience color drift as the temperature rises. Utility Model Content

[0005] The purpose of this utility model is to provide a multi-lamp interior ambient light, including a controller. The controller contains a chip that drives the lamp beads to emit light. Multiple lamp heads share one controller, saving the cost of using multiple chips. At the same time, the controller is separated from the lamp heads and placed far away from the lamp heads, which greatly reduces the heat generated around the lamp beads and avoids color drift.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a multi-light head interior ambient light, including at least two light-emitting heads, at least two light-guiding optical fibers, a controller and a mounting bracket, wherein the light-guiding optical fibers are respectively disposed in the mounting bracket, and the ends of the light-emitting optical fibers are connected to the light-emitting heads; the controller is disposed away from the light-emitting heads, and a plurality of the light-emitting heads are electrically connected to the controller; the controller is provided with a driving chip, and the driving chip controls the light-emitting heads to emit light of different colors so that the light-guiding optical fibers present different colors.

[0007] By adopting the above technical solution, one controller can control multiple light heads, saving the driver chip, and the controller is far away from the light heads, which greatly reduces the heat generated around the light beads.

[0008] A further feature of this invention is that the light-emitting head includes a housing, a lamp board, and LED beads, wherein the LED beads are RGB LED beads, the LED beads are disposed on the lamp board, and the lamp board is disposed in the inner cavity of the housing.

[0009] A further feature of this invention is that the housing has an insertion hole, the optical fiber is inserted into the insertion hole and fixedly connected to the housing, the LED bead faces the end of the optical fiber, and the light emitted by the LED bead enters the optical fiber.

[0010] A further feature of this invention is that the insertion hole includes a central hole, a guide groove, and a limiting portion distributed outside the central hole. The end of the optical fiber is provided with a guide block and a limiting block adapted to the limiting portion. The guide block is inserted into the guide groove, and the limiting block is placed inside the limiting portion.

[0011] A further feature of this invention is that a plurality of ribs are provided circumferentially inside the central hole, and the plurality of ribs abut against the optical fiber.

[0012] A further feature of this invention is that it includes a wire with male connectors at both ends, a female connector on each light-emitting lamp head, and a female connector on the controller. The wire electrically connects several light-emitting lamp heads to the controller.

[0013] A further feature of this invention is that the driving chip is an ambient light chip of model IND83216.

[0014] A further feature of this invention is that the controller is further provided with a dimming circuit and a protection circuit, the dimming circuit being electrically connected to the driver chip, and the protection circuit being electrically connected to the driver chip.

[0015] A further feature of this invention is that the dimming circuit includes a digital transistor Q1 and a transistor Q4. The collector of transistor Q4 is connected to the negative terminal of the LED bead, the emitter of transistor Q4 is connected to the ground point, the base of transistor Q4 is connected to the output terminal of digital transistor Q1, the control terminal of digital transistor Q1 is connected to the pin of the LED driver chip, and the input terminal of digital transistor Q1 is connected to the power supply VBAT.

[0016] A further feature of this invention is that the protection circuit includes diodes D1 and D2, transient suppression diode TVS1, and ferrite bead FB1. Transient suppression diode TVS1 is connected in parallel to the DC voltage VIN input terminal. The negative terminal of diode D2 is connected to the DC voltage VIN input terminal, the positive terminal of diode D2 is connected to the positive terminal of the LED bead, the negative terminal of diode D1 is connected to the DC voltage VIN input terminal, and the positive terminal of diode D1 is connected to the ferrite bead FB1.

[0017] Compared with the prior art, the present invention has the following advantages: 1. It uses one controller to control multiple light-emitting heads, which saves the required driver chip and reduces manufacturing costs. Moreover, the controller is separated from the light head and set away from the light head, which greatly reduces the heat generated around the light beads and avoids color drift; 2. The housing of the light-emitting head has a socket that can limit the light guide fiber and allow all the light to enter the light guide fiber; 3. The driver chip and circuit enable the ambient light to emit different atmospheres. Attached Figure Description

[0018] Figure 1 This is a perspective view of the multi-lamp interior ambient lighting in Example 1.

[0019] Figure 2 In Example 1 Figure 1 A magnified view of side A.

[0020] Figure 3 This is a rear view of the light-emitting lamp head in Example 1.

[0021] Figure 4 This is an exploded view of the light-emitting lamp head in Example 1.

[0022] Figure 5 This is a perspective view of the multi-lamp interior ambient lighting in Example 2.

[0023] Figure 6 This is the circuit diagram of the LED beads in Example 3.

[0024] Figure 7 This is the circuit schematic of the driver chip in Example 3.

[0025] Figure 8 This is the circuit diagram of the dimming circuit in Example 3.

[0026] Figure 9 This is the circuit diagram of the protection circuit in Example 3.

[0027] In the diagram: 1. Mounting bracket; 2. Lamp head; 3. Optical fiber; 4. Controller; 11. Placement slot; 12. Clip; 13. Mounting slot; 21. Housing; 22. Lamp board; 23. LED beads; 24. Socket; 25. Center hole; 26. Guide groove; 27. Limiting part; 28. Rib; 31. Guide block; 32. Limiting block; 41. Female connector; 42. Male connector; 43. Wire. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. It should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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, and therefore should not be construed as a limitation of the present utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] Example 1

[0030] like Figure 1-2 As shown, this embodiment discloses a multi-light head interior ambient light, including a mounting bracket 1, two light-emitting heads 2, two light-guiding optical fibers 3, and a controller 4. The two light-emitting heads 2 are respectively installed in the mounting slots 13 of the mounting bracket 1, and the two light-guiding optical fibers 3 are respectively installed in the mounting bracket 1. Each end of the light-guiding optical fiber 3 is connected to a light-emitting head 2. The light emitted by the light-emitting head 2 enters the light-guiding optical fiber 3, causing the entire light-guiding optical fiber 3 to emit light and illuminate the surrounding area. The controller 4 is located away from the light-emitting heads 2. The controller 4 contains a chip and is electrically connected to the light-emitting heads 2 by a wire 43. Both light-emitting heads 2 are electrically connected to the controller 4, and the controller 4 simultaneously controls the two light-emitting heads 2 to emit light of different colors.

[0031] like Figure 3 , Figure 4 As shown, the light-emitting head 2 includes a housing 21, a light board 22, and LED beads 23. The light board 22 is installed in the inner cavity of the housing 21, and LED beads 23 are provided on the light board 22. In this embodiment, the LED beads 23 provided on the light board 22 are three LED beads of three colors: red, green, and blue, which are RGB LED beads 23. The emission direction of the LED beads 23 is aligned with the end of the light guide fiber 3. The end of the light guide fiber 3 is fixedly connected to the housing 21. The light from the LED beads 23 enters the light guide fiber 3 and illuminates the entire light guide fiber 3. The LED beads 23 can emit different light effects under the control of the controller 4, such as flowing ambient lighting effects, breathing ambient lighting effects, intermittent ambient lighting effects, etc. The RGB LED beads 23 can emit different colors of light through the controller 4, making the lighting effects emitted by the ambient light more beautiful.

[0032] like Figure 3 As shown, a socket 24 is provided on the housing 21. The optical fiber 3 is inserted into the socket 24 and fixedly connected to the housing 21. The socket 24 includes a central hole 25, a guide groove 26, and a limiting part 27 distributed outside the central hole 25. The end of the optical fiber 3 is provided with a guide block 31 and a limiting block 32 that is adapted to the limiting part 27. The end of the optical fiber 3 is inserted into the central hole 25 along the guide groove 26, and the limiting block 32 is placed in the limiting part 27, so that the optical fiber 3 is fixedly connected to the light source 2.

[0033] Several ribs 28 are provided in the circumferential direction of the central hole 25. After the optical fiber 3 is inserted and fixed in the housing 21, the ribs 28 abut against the optical fiber 3, so that the optical fiber 3 is positioned directly opposite the LED bead 23, and the light emitted by the LED bead 23 is completely injected into the optical fiber 3.

[0034] like Figure 2 As shown, the mounting bracket 1 has a placement groove 11 in the middle, and several buckles 12 are provided on the placement groove 11. The light guide fiber 3 is placed in the placement groove 11 and fixed by the buckles 12. The end of the light guide fiber 3 is inserted into the housing 21 of the light-emitting lamp head 2, and the LED beads 23 on the lamp board 22 shine light into the light guide fiber 3.

[0035] like Figure 1 As shown, the light source 2 and the controller 4 are connected remotely by wires 43 to prevent the LEDs from bleaching due to temperature rise. The light source 2 and the controller 4 are connected by plugs. A female plug 41 is provided on the housing 21, which is electrically connected to the lamp board 22. Both ends of the wires 43 are provided with male plugs 42, which are plugged into the female plugs 41. The controller 4 is provided with a female plug 41. The wires 43 electrically connect the controller 4, which is far away from the light source 2, to multiple light sources 2, so that one controller 4 can control multiple light sources 2.

[0036] Example 2

[0037] like Figure 5 As shown, another embodiment discloses a multi-light head interior ambient light, including a mounting bracket 1, three light-emitting heads 2, three light-guiding optical fibers 3, and a controller 4. The three light-emitting heads 2 are respectively mounted on the mounting bracket 1, and the three light-guiding optical fibers 3 are respectively mounted inside the mounting bracket 1. The ends of the light-guiding optical fibers 3 are connected to the light-emitting heads 2, and the light emitted by the light-emitting heads 2 enters the light-guiding optical fibers 3 to make the light-guiding optical fibers 3 emit light. The controller 4 is located at a position away from the light-emitting heads 2. The controller 4 is equipped with an LED driver chip and a dimming circuit. The controller 4 is electrically connected to the light-emitting heads 2 by a wire 43. All three light-emitting heads 2 are electrically connected to the controller 4, and the controller 4 controls the light-emitting heads 2 to emit light of different colors.

[0038] Example 3

[0039] Figure 4 The light panel 22 in the middle, Figure 6 The circuit diagram of the lamp board 22 is shown. The lamp board 22 is equipped with RGB LED beads 23. The RGB LED beads 23 are composed of three tri-color LED beads 23. Each LED bead 23 is connected in parallel with a capacitor and in series with a resistor.

[0040] The controller 4 contains a circuit board, and the circuit board contains a driver chip, such as... Figure 7 , 8 9 is the circuit schematic of the circuit board inside controller 4, such as Figure 7 The driver chip is an LED driver chip. In this embodiment, the LED driver chip is an ambient light chip of model IND83216. It can also be replaced by an LED driver chip with the same or similar functions.

[0041] like Figure 8 The circuit board also includes a dimming circuit. The LED driver chip is electrically connected to the dimming circuit, which is connected to the negative terminal of the LED bead 23. The output signal of the LED driver chip controls the current flowing through the dimming circuit, thereby controlling the brightness and color of the LED bead 23 and adjusting the ambient lighting to different colors. The dimming circuit includes digital transistors Q1, Q2, and Q3 and transistors Q4, Q5, and Q6. The collector of transistor Q4 is connected to the negative terminal of the LED bead 23, the emitter of transistor Q4 is connected to ground, and the base of transistor Q4 is connected to the output terminal of digital transistor Q1. The control terminal of digital transistor Q1 is connected to the pin of the LED driver chip, and the input terminal of digital transistor Q1 is connected to the power supply VBAT. The other two sets of digital transistors Q2 and Q3 and transistors Q5 and Q6 are connected in the same way.

[0042] like Figure 9 The circuit board also includes a protection circuit. The voltage protection circuit regulates the DC voltage VIN from the input controller 4 and outputs it as the power supply voltage VCC-LED and voltage VBAT for LED beads 23. The voltage protection circuit includes capacitors C1, C2, C3, C4, and C5, diodes D1 and D2, transient suppression diode TVS1, and ferrite bead FB1. Capacitors C2 and C5 are connected in parallel to the DC voltage VIN input terminal. The transient suppression diode TVS1 is connected in parallel to the DC voltage VIN input terminal. In the back-end circuit of the protection circuit, the negative terminal of diode D2 is connected to the DC voltage VIN input terminal, and the positive terminal of diode D2 is connected to the positive terminal of LED beads 23, providing power to LED beads 23 through unidirectional conduction. The negative terminal of diode D1 is connected to the DC voltage VIN input terminal, and the positive terminal of diode D1 is connected to ferrite bead FB1 to output voltage VBAT. Ferrite bead FB1 is used to suppress interference signals in the circuit. Capacitors C1 and C3 and C4 are connected in parallel across ferrite bead FB1, respectively.

[0043] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A multi-light-head interior ambient light, characterized in that: It includes at least two light-emitting lamp heads (2), at least two light-guiding optical fibers (3), a controller (4), and a mounting bracket (1). The light-guiding optical fibers (3) are respectively disposed in the mounting bracket (1), and the ends of the light-guiding optical fibers (3) are connected to the light-emitting lamp heads (2). The controller (4) is disposed away from the light-emitting lamp heads (2), and several light-emitting lamp heads (2) are electrically connected to the controller (4). The controller (4) is provided with a driving chip, and the driving chip controls the light-emitting lamp heads (2) to emit light of different colors so that the light-guiding optical fibers (3) present different colors.

2. The multi-head interior ambient light according to claim 1, characterized in that: The light head (2) includes a housing (21), a lamp board (22) and LED beads (23). The LED beads (23) are RGB LED beads (23). The LED beads (23) are disposed on the lamp board (22), and the lamp board (22) is disposed in the inner cavity of the housing (21).

3. The multi-head interior ambient light according to claim 2, characterized in that: The housing (21) is provided with a socket (24), and the optical fiber (3) is inserted into the socket (24) and fixedly connected to the housing (21). The LED bead (23) faces the end of the optical fiber (3), and the light emitted by the LED bead (23) enters the optical fiber (3).

4. A multi-head interior ambient light according to claim 3, characterized in that: The insertion hole (24) includes a central hole (25), a guide groove (26), and a limiting part (27) distributed outside the central hole (25). The end of the optical fiber (3) is provided with a guide block (31) and a limiting block (32) adapted to the limiting part (27). The guide block (31) is inserted into the guide groove (26), and the limiting block (32) is placed in the limiting part (27).

5. A multi-head interior ambient light according to claim 4, characterized in that: The central hole (25) is provided with a plurality of ribs (28) in the inner circumferential direction, and the plurality of ribs (28) abut against the optical fiber (3).

6. A multi-head interior ambient light according to claim 1, characterized in that: It also includes a wire (43), which has male connectors (42) at both ends, a female connector (41) on the light-emitting lamp head (2), and a female connector (41) on the controller (4). The wire (43) electrically connects several light-emitting lamp heads (2) to the controller (4).

7. A multi-head interior ambient light according to claim 1, characterized in that: The driver chip is an ambient light chip with model number IND83216.

8. A multi-head interior ambient light according to claim 1, characterized in that: The controller (4) is also provided with a dimming circuit and a protection circuit. The dimming circuit is electrically connected to the driver chip, and the protection circuit is electrically connected to the driver chip.

9. A multi-head interior ambient light according to claim 8, characterized in that: The dimming circuit includes a digital transistor Q1 and a transistor Q4. The collector of transistor Q4 is connected to the negative terminal of the LED bead (23), the emitter of transistor Q4 is connected to the ground point, the base of transistor Q4 is connected to the output terminal of digital transistor Q1, the control terminal of digital transistor Q1 is connected to the pin of the LED driver chip, and the input terminal of digital transistor Q1 is connected to the power supply VBAT.

10. A multi-head interior ambient light according to claim 8, characterized in that: The protection circuit includes diodes D1 and D2, transient suppression diode TVS1, and ferrite bead FB1. Transient suppression diode TVS1 is connected in parallel to the DC voltage VIN input terminal. The negative terminal of diode D2 is connected to the DC voltage VIN input terminal. The positive terminal of diode D2 is connected to the positive terminal of LED bead (23). The negative terminal of diode D1 is connected to the DC voltage VIN input terminal. The positive terminal of diode D1 is connected to ferrite bead FB1.

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