Multi-color-temperature lamp and color temperature switching circuit

Abstract

The utility model relates to a multi-color-temperature lamp and a color temperature switching circuit, comprising a COB light source provided with at least two color temperature light-emitting modules and a change-over switch provided with a plurality of output ends, at least one of the plurality of output ends is directly conducted with a separate input end, and / or at least one of the plurality of output ends is conducted with the separate input end through a resistor, and the change-over switch is connected with the separate input end through a resistor. The light-emitting module is independently and directly lighted, is lighted at an independent current-limiting voltage-reducing point, is lighted at a combined current-limiting voltage-reducing point and / or is lighted directly in a combined manner through the change-over switch; and color temperature switching is realized. The color temperature switching circuit is matched with the COB light source 2 of the multi-color-temperature block through the multi-gear double-side toggle switch, so that the lamp realizes 5CCT gear color temperature switching and gradient color temperature by utilizing single-path double color temperature, and the color temperature gradient adjustment is more accurate and the switching speed is high through the color temperature switching mode.

Description

Technical Field

[0001] The utility model relates to the field of lamps, in particular to a multi-color temperature lamp and a color temperature switching circuit. Background Art

[0002] Nowadays, people use lights not only for lighting functions, but also for energy saving and situational applications. In daily work and life, different lighting scenes are needed, and different scenes require lights of different color temperatures. The market generally uses dual-channel dual-color temperature lamps with 5CCT color temperature, but there are also lamps that use single-channel dual-color temperature for gradient color temperature. The control circuit of the lamp is shown in a single-channel dual-color temperature control circuit described in Chinese patent document, patent number: CN201922441812.0. The applicant improves and perfects the existing control circuit to provide a new color temperature switching circuit for consumers to choose. Summary of the invention

[0003] The utility model aims to provide a multi-color temperature lamp and a color temperature switching circuit which have simple and reasonable structure, are easy to install and have stable structure.

[0004] A color temperature switching circuit comprises a COB light source and a switching switch, wherein the COB light source is provided with light-emitting modules of at least two color temperatures, the COB light source is provided with a first common input terminal and at least two independent input terminals, the first common input terminal is electrically connected to an electrode of all the light-emitting modules at the same time, the number of independent input terminals is the same as the number of light-emitting modules, and each independent input terminal is electrically connected to each corresponding light-emitting module respectively; the switching switch is provided with a second common input terminal and multiple output terminals, the first common input terminal and the second common input terminal are electrically connected to a driving power supply respectively, at least one of the multiple output terminals is directly connected to the individual input terminal, and / or at least one of the multiple output terminals is connected to the individual input terminal through a resistor, and the light-emitting module is directly lit individually, lighted individually by current reduction, lit in combination by current limiting and voltage reduction, and / or directly lit in combination by switching the switch, so as to realize color temperature switching.

[0005] The purpose of the utility model can also be solved by the following technical measures:

[0006] As a more specific solution, the COB light source is provided with a first color temperature light-emitting module, a second color temperature light-emitting module and a third color temperature light-emitting module, and the COB light source is provided with a first independent input terminal, a second independent input terminal and a third independent input terminal which are electrically connected to the first color temperature light-emitting module, the second color temperature light-emitting module and the third color temperature light-emitting module respectively.

[0007] As a further solution, the switching switch is provided with six groups of outputs, each group of outputs is provided with two output terminals; wherein, one output terminal of the first group of outputs is directly electrically connected to the second independent input terminal, and the other output terminal of the first group of outputs is in a neutral position. One output terminal of the second group of outputs is directly electrically connected to the second independent input terminal, and the other output terminal of the second group of outputs is electrically connected to the first independent input terminal through a first resistor. One output terminal of the third group of outputs is directly electrically connected to the second independent input terminal, and the other output terminal of the third group of outputs is electrically connected to the first independent input terminal through a second resistor. One output terminal of the fourth group of outputs is electrically connected to the second independent input terminal through a third resistor, and the other output terminal of the fourth group of outputs is directly electrically connected to the first independent input terminal. One output terminal of the fifth group of outputs is in a neutral position, and the other output terminal of the fifth group of outputs is directly electrically connected to the first independent input terminal. One output terminal of the sixth group of outputs is electrically connected to the third independent input terminal through a fourth resistor, and the other output terminal of the sixth group of outputs is directly electrically connected to the first independent input terminal.

[0008] As a further solution, the color temperatures of the first color temperature light emitting module, the second color temperature light emitting module and the third color temperature light emitting module are 5000K, 2700K and 1800K-2000K respectively.

[0009] As a further solution, the operating voltages of the first color temperature light-emitting module, the second color temperature light-emitting module and the third color temperature light-emitting module are DC36V, DC36V and DC30V respectively.

[0010] As a further solution, the switching switch is a double-chopper toggle switch, whose second common input terminal is located in the middle, the first group of outputs, the second group of outputs and the third group of outputs are located on one side of the second common input terminal, and the fourth group of outputs, the fifth group of outputs and the sixth group of outputs are located on one side of the second common input terminal. The double-chopper toggle switch is provided with a conductive switch paddle, which is slidably arranged to selectively connect the second common input terminal to the first group of outputs, the second group of outputs, the third group of outputs, the fourth group of outputs, the fifth group of outputs and the sixth group of outputs, respectively.

[0011] As a further solution, the first common input terminal is electrically connected to the positive electrode of the driving power supply, and the second common input terminal is electrically connected to the negative electrode of the driving power supply.

[0012] As a further solution, the first color temperature light-emitting module, the second color temperature light-emitting module and the third color temperature light-emitting module are arranged in the central circular area of ​​the substrate, wherein the third color temperature light-emitting module is located on the bisector of the central circular area, and the first color temperature light-emitting module and the second color temperature light-emitting module are sequentially arranged outside the two sides of the third color temperature light-emitting module.

[0013] As a further solution, a dimmer is connected to the driving power supply.

[0014] A multi-color temperature lamp adopts the above-mentioned color temperature switching circuit.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model discloses a multi-color temperature lamp and a color temperature switching circuit. The color temperature switching circuit cooperates with a COB light source of a multi-color temperature block through a multi-speed double-chopper toggle switch, so that the lamp can realize 5CCT color temperature switching and gradual color temperature by using a single-channel dual color temperature. This color temperature switching method makes the color temperature gradual adjustment more accurate and the switching speed faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a first embodiment of a color temperature switching circuit in the utility model.

[0018] Figure 2 This is a structural schematic diagram of a second embodiment of the color temperature switching circuit in the utility model. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments. Example

[0020] like Figure 1 As shown, a multi-color temperature lamp and a color temperature switching circuit, wherein a color temperature switching circuit includes a COB light source 2 and a switching switch 3, wherein the COB light source 2 is provided with light-emitting modules of at least two color temperatures, the COB light source 2 is provided with a first common input terminal 204 and at least two independent input terminals, the first common input terminal 204 is electrically connected to an electrode of all the light-emitting modules at the same time, the number of independent input terminals is the same as the number of light-emitting modules, and each independent input terminal is electrically connected to each corresponding light-emitting module; the switching switch 3 is provided with a second common input terminal 37 and multiple output terminals, the first common input terminal 204 and the second common input terminal 37 are electrically connected to a driving power supply, at least one of the multiple output terminals is directly connected to a separate input terminal, and / or at least one of the multiple output terminals is connected to a separate input terminal through a resistor, and the light-emitting module is directly lit individually, the light-emitting module is lighted individually, the light-emitting module is lighted in combination with current limiting and voltage reduction, and / or the light-emitting module is directly lit in combination through the switching switch 3; color temperature switching is achieved.

[0021] The first common input terminal 204 is electrically connected to the positive electrode + (positive electrode line 1) of the driving power supply, and the second common input terminal 37 is electrically connected to the negative electrode − of the driving power supply.

[0022] As a specific solution, the COB light source 2 is provided with a first color temperature light-emitting module 21, a second color temperature light-emitting module 22 and a third color temperature light-emitting module 23, and the COB light source 2 is provided with a first independent input terminal 201, a second independent input terminal 202 and a third independent input terminal 203 which are electrically connected to the first color temperature light-emitting module 21, the second color temperature light-emitting module 22 and the third color temperature light-emitting module 23 respectively.

[0023] The first color temperature light-emitting module 21, the second color temperature light-emitting module 22 and the third color temperature light-emitting module 23 are arranged in the central circular area of ​​the substrate, wherein the third color temperature light-emitting module 23 is located on the bisector of the central circular area, and the first color temperature light-emitting module 21 and the second color temperature light-emitting module 22 are sequentially arranged outside the two sides of the third color temperature light-emitting module 23.

[0024] The color temperatures of the first color temperature light emitting module 21, the second color temperature light emitting module 22 and the third color temperature light emitting module 23 are 5000K, 2700K and 1800K-2000K respectively. Specifically, each light emitting module uses a multi-layer phosphor coating to emit different color temperatures.

[0025] The operating voltages of the first color temperature light emitting module 21 , the second color temperature light emitting module 22 and the third color temperature light emitting module 23 are DC36V, DC36V and DC30V respectively.

[0026] The switching switch 3 is a double-chopper toggle switch, which is provided with six groups of outputs, each group of outputs is provided with two output terminals; the second common input terminal 37 is located in the middle, the first group of outputs 31, the second group of outputs 32 and the third group of outputs 33 are located on one side of the second common input terminal 37, and the fourth group of outputs 34, the fifth group of outputs 35 and the sixth group of outputs 36 are located on one side of the second common input terminal 37. A conductive switch paddle is provided on the double-chopper toggle switch, and the conductive switch paddle is slidably set to selectively connect the second common input terminal 37 to the first group of outputs 31, the second group of outputs 32, the third group of outputs 33, the fourth group of outputs 34, the fifth group of outputs 35 and the sixth group of outputs 36 respectively.

[0027] The color temperature switching circuit cooperates with the COB light source 2 of the multi-color temperature block through a multi-speed double-chopper toggle switch, so that the lamp can achieve 5CCT color temperature switching and gradual color temperature using a single-channel dual color temperature. This color temperature switching method makes the color temperature gradual adjustment more accurate and the switching speed faster.

[0028] One output end of the first output group 31 is directly electrically connected to the second independent input end 202, and the other output end of the first output group 31 is in neutral; one output end of the second output group 32 is directly electrically connected to the second independent input end 202, and the other output end of the second output group 32 is electrically connected to the first independent input end 201 through the first resistor 4; one output end of the third output group 33 is directly electrically connected to the second independent input end 202, and the other output end of the third output group 33 is electrically connected to the first independent input end 201 through the second resistor 5; one output end of the fourth output group 34 is electrically connected to the second independent input end 202 through the third resistor 6, and the other output end of the fourth output group 34 is directly electrically connected to the first independent input end 201; one output end of the fifth output group 35 is in neutral, and the other output end of the fifth output group 35 is directly electrically connected to the first independent input end 201; one output end of the sixth output group 36 is electrically connected to the third independent input end 203 through the fourth resistor 7, and the other output end of the sixth output group 36 is directly electrically connected to the first independent input end 201.

[0029] A multi-color temperature lamp comprises a lamp adopting the color temperature switching circuit.

[0030] Combined with the above color temperature switching circuit, the circuit control principle of the multi-color temperature lamp is as follows:

[0031] When the first-gear circuit switch is turned on, the second light-emitting module 22 with a color temperature of 2700K is lit;

[0032] When the second gear circuit switch is turned on, the second light emitting module 22 with a color temperature of 2700K is lit, and the first light emitting module 21 with a color temperature of 5000K is controlled by the first resistor 4 to limit the current and mix with 2700K to 3000K;

[0033] When the third gear circuit switch is turned on, the second light emitting module 22 with a color temperature of 2700K is lit, and the first light emitting module 21 with a color temperature of 5000K is controlled by the second resistor 5 to limit the current and mix with 2700K to 3500K;

[0034] When the fourth-gear circuit switch is turned on, the first light-emitting module 21 with a color temperature of 5000K is lit, and the second light-emitting module 22 with a color temperature of 2700K is controlled by the third resistor 6 to limit the current and mix with 5000K to 4000K;

[0035] When the fifth-gear circuit switch is turned on, the first light-emitting module 21 with a color temperature of 5000K is lit;

[0036] When the six-speed circuit switch is turned on, the first light-emitting module 21 with a color temperature of 5000K is lit, and the third light-emitting module 23 with a color temperature of 1800K is lit together through the current limiting and voltage dividing of the fourth resistor 7, and mixed with 5000K to form 4500K. Example

[0037] The difference between the second embodiment and the first embodiment is that: Figure 2 As shown, the positive line 1 of the driving power supply is connected to a dimmer 8, and the gradual color temperature can only be achieved by connecting the dimmer 8 to the driving power supply.

[0038] When the dimmer 8 is added, the circuit control principle of the multi-color temperature lamp is different in that when the dimmer 8 is gradually dimmed, the output voltage of the driving power supply is also reduced. When the voltage is reduced to 5000K, the 1800K lamp with low voltage can still be lit because of the voltage difference between the two color temperatures. When the driving output voltage changes, a gradual color temperature is achieved.

[0039] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may be changed and improved without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A color temperature switching circuit, comprising a COB light source (2) and a switching switch (3), characterized in that: The COB light source (2) is provided with light-emitting modules with at least two color temperatures. The COB light source (2) is provided with a first common input terminal (204) and at least two independent input terminals. The first common input terminal (204) is electrically connected to an electrode of all the light-emitting modules at the same time. The number of independent input terminals is the same as the number of light-emitting modules, and each independent input terminal is electrically connected to each corresponding light-emitting module. The switching switch (3) is provided with a second common input terminal (37) and a plurality of output terminals. The first common input terminal (204) and the second common input terminal (37) are electrically connected to a driving power supply, respectively. At least one of the plurality of output terminals is directly connected to an independent input terminal, and / or at least one of the plurality of output terminals is connected to an independent input terminal through a resistor. The switching switch (3) enables the light-emitting modules to be directly lit individually, lighted individually by current reduction, lighted by combined current limiting and voltage reduction, and / or lighted directly in combination. Color temperature switching is achieved.

2. The color temperature switching circuit according to claim 1, characterized in that: The COB light source (2) is provided with a first color temperature light-emitting module (21), a second color temperature light-emitting module (22) and a third color temperature light-emitting module (23); the COB light source (2) is provided with a first independent input terminal (201), a second independent input terminal (202) and a third independent input terminal (203) which are electrically connected to the first color temperature light-emitting module (21), the second color temperature light-emitting module (22) and the third color temperature light-emitting module (23), respectively.

3. The color temperature switching circuit according to claim 2, characterized in that: The switch (3) is provided with six groups of outputs, each group of outputs being provided with two output terminals; wherein one output terminal of the first group of outputs (31) is directly electrically connected to the second independent input terminal (202), and the other output terminal of the first group of outputs (31) is in neutral; One output end of the second group of outputs (32) is directly electrically connected to the second independent input end (202), and another output end of the second group of outputs (32) is electrically connected to the first independent input end (201) via a first resistor (4); One output end of the third output group (33) is directly electrically connected to the second independent input end (202), and another output end of the third output group (33) is electrically connected to the first independent input end (201) via a second resistor (5); One output end of the fourth output group (34) is electrically connected to the second independent input end (202) via a third resistor (6), and another output end of the fourth output group (34) is directly electrically connected to the first independent input end (201); One output end of the fifth output group (35) is in neutral, and another output end of the fifth output group (35) is directly electrically connected to the first independent input end (201); One output end of the sixth group of outputs (36) is electrically connected to the third independent input end (203) via a fourth resistor (7), and another output end of the sixth group of outputs (36) is directly electrically connected to the first independent input end (201).

4. The color temperature switching circuit according to claim 2, characterized in that: The color temperatures of the first color temperature light-emitting module (21), the second color temperature light-emitting module (22) and the third color temperature light-emitting module (23) are 5000K, 2700K and 1800K-2000K respectively.

5. The color temperature switching circuit according to claim 2, characterized in that: The operating voltages of the first color temperature light-emitting module (21), the second color temperature light-emitting module (22) and the third color temperature light-emitting module (23) are DC36V, DC36V and DC30V respectively.

6. The color temperature switching circuit according to claim 3, characterized in that: The switching switch (3) is a double-chopper toggle switch, wherein the second common input terminal (37) is located in the middle, the first group of outputs (31), the second group of outputs (32) and the third group of outputs (33) are located on one side of the second common input terminal (37), and the fourth group of outputs (34), the fifth group of outputs (35) and the sixth group of outputs (36) are located on one side of the second common input terminal (37). The double-chopper toggle switch is provided with a conductive switch paddle, which is slidably arranged to selectively connect the second common input terminal (37) to the first group of outputs (31), the second group of outputs (32), the third group of outputs (33), the fourth group of outputs (34), the fifth group of outputs (35) and the sixth group of outputs (36).

7. The color temperature switching circuit according to claim 1, characterized in that The first common input terminal (204) is electrically connected to the positive pole of the driving power supply, and the second common input terminal (37) is electrically connected to the negative pole of the driving power supply.

8. The color temperature switching circuit according to claim 2, characterized in that The first color temperature light-emitting module (21), the second color temperature light-emitting module (22) and the third color temperature light-emitting module (23) are arranged in a central circular area of ​​the substrate, wherein the third color temperature light-emitting module (23) is located on a bisector of the central circular area, and the first color temperature light-emitting module (21) and the second color temperature light-emitting module (22) are arranged in sequence outside two sides of the third color temperature light-emitting module (23).

9. The color temperature switching circuit according to claim 1, characterized in that The driving power supply is connected to a dimmer (8).

10. Multi-color temperature lamp, characterized by: The multi-color temperature lamp adopts the color temperature switching circuit described in any one of claims 1-9.

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