Multi-color-temperature COB light source lamp and control box for same

Abstract

The utility model discloses a multi-color-temperature COB light source lamp and a control box thereof, the lamp comprises a COB light source provided with three light-emitting modules, one ends of the three light-emitting modules are connected in parallel and are electrically connected with a power supply electrode; the LED lamp further comprises a double-color-temperature control circuit and a multi-color-temperature switching circuit, the double-color-temperature control circuit is provided with a first input end, a first output end and a first gear shifting switch, the first gear shifting switch selectively controls on-off connection of the first input end and the first output end, and the first output end is electrically connected with the other end of one light-emitting module. The multi-color-temperature switching circuit is provided with a second input end, more than three multi-color-temperature control output ends and a second gear shifting switch, the first input end and the second input end are electrically connected with the other power electrode, and the second gear shifting switch controls the second input end to be selectively and electrically connected with the multi-color-temperature control output ends; and the other ends of the other two light-emitting modules are at least electrically connected with one multi-color-temperature control output end respectively. The LED lamp is large in color temperature adjusting range and wide in application range.

Description

Technical Field

[0001] This utility model relates to a COB light source control circuit, and in particular to a multi-color temperature COB light source lamp and its control box. Background Technology

[0002] Chinese Patent Publication No. CN211297029U, published on August 18, 2020, discloses a single-channel dual-color-temperature control circuit, including a dimming power supply. One end of the dimming power supply is electrically connected to the live wire, and the other end is electrically connected to the neutral wire. The control terminal of the dimming power supply is electrically connected to a dimmer. The positive terminal of the dimming power supply is connected in parallel with the input terminals of a first and second light-emitting components via a wire. The output terminals of the first and second light-emitting components are electrically connected to the negative terminal of the dimming power supply via a wire. This circuit has a limited color temperature adjustment range and a narrow application scope. Utility Model Content

[0003] The purpose of this utility model is to provide a multi-color temperature COB light source lamp with a reasonable structure, a wide color temperature adjustment range, and a wide range of applications.

[0004] The purpose of this utility model is achieved as follows:

[0005] A multi-color-temperature COB light source luminaire includes a COB light source with three light-emitting modules. One end of each of the three light-emitting modules is connected in parallel and electrically connected to a power supply. The luminaire also includes a dual-color-temperature control circuit and a multi-color-temperature switching circuit. The dual-color-temperature control circuit has a first input terminal, a first output terminal, and a first shift switch. The first input terminal is electrically connected to another power supply, and the first shift switch selectively controls the on / off connection of the first input terminal and the first output terminal. The first output terminal is electrically connected to the other end of one of the light-emitting modules. The multi-color-temperature switching circuit has a second input terminal, three or more multi-color-temperature control output terminals, and a second shift switch. The second input terminal is electrically connected to another power supply, and the second shift switch selectively connects the second input terminal to each of the multi-color-temperature control output terminals. The other ends of the other two light-emitting modules are each electrically connected to at least one multi-color-temperature control output terminal.

[0006] The objective of this utility model can also be achieved by the following technical measures:

[0007] As a more specific embodiment, the three light-emitting modules are a high color temperature light-emitting module, a medium color temperature light-emitting module, and a low color temperature light-emitting module. The operating voltage of the low color temperature light-emitting module is lower than that of the other two color temperature light-emitting modules. The first output terminal of the dual color temperature control circuit is electrically connected to at least the other end of the low color temperature light-emitting module.

[0008] As a further embodiment, the multi-color temperature control output terminal has five parts, namely a first control output terminal, a second control output terminal, a third control output terminal, a fourth control output terminal, and a fifth control output terminal. The first control output terminal is electrically connected to the other end of the medium color temperature light-emitting module; the second control output terminal is electrically connected to both the medium color temperature light-emitting module and the other end of the high color temperature light-emitting module via a first resistor; the third control output terminal is electrically connected to both the medium color temperature light-emitting module and the other end of the high color temperature light-emitting module via a second resistor; the fourth control output terminal is electrically connected to both the high color temperature light-emitting module and the other end of the medium color temperature light-emitting module via a third resistor; the fifth control output terminal is electrically connected to both the high color temperature light-emitting module and the other end of the medium color temperature light-emitting module via a fourth resistor, or alternatively, the fifth control output terminal is electrically connected only to the other end of the high color temperature light-emitting module. When the control output terminal is connected to two color temperature light-emitting modules, it has two independent control output connection points.

[0009] As a further embodiment, the multi-color temperature control output terminal also includes a sixth control output terminal, which is electrically connected to the high color temperature light-emitting module.

[0010] As a further embodiment, the first output terminal of the dual color temperature control circuit is electrically connected to the high color temperature light-emitting module and the low color temperature light-emitting module, respectively; wherein, the other end of the low color temperature light-emitting module is electrically connected to the first output terminal directly or through a fifth resistor, and the other end of the high color temperature light-emitting module is electrically connected to the first output terminal through a sixth resistor; or, the first output terminal is electrically connected only directly or through a fifth resistor to the other end of the low color temperature light-emitting module.

[0011] As a further embodiment, the color temperatures of the high color temperature light-emitting module, the medium color temperature light-emitting module, and the low color temperature light-emitting module are 5000K, 2700K, and 1800K-2000K, respectively, and the forward voltages of the high color temperature light-emitting module, the medium color temperature light-emitting module, and the low color temperature light-emitting module are 36V, 36V, and 30V, respectively.

[0012] As a further embodiment, the first resistor has a resistance of 33 ohms; the second resistor has a resistance of 3.3 ohms; the third resistor has a resistance of 7.5 ohms; the fifth resistor has a resistance of 82 ohms; and the fourth and sixth resistors are protective resistors. The main functions of protective resistors in a circuit are voltage division and current limiting, to protect sensitive components from damage caused by overvoltage or overcurrent.

[0013] As a further embodiment, the COB light source is mounted on the lamp body, and the dual-color temperature control circuit and multi-color temperature switching circuit are mounted on the lamp body; alternatively, the lamp body is provided with leads, and a control box is mounted on the leads, with the dual-color temperature control circuit and multi-color temperature switching circuit mounted on the control box.

[0014] The purpose of this invention is to provide a control box for a multi-color temperature COB light source that has a reasonable structure and is easy to connect.

[0015] The purpose of this utility model is achieved as follows:

[0016] A control box for a multi-color temperature COB light source includes a box body and a control circuit. The control circuit is provided on the box body and includes input lines, output lines, and control circuitry. The input lines include a positive input terminal and a negative input terminal, and the output lines include a positive output terminal, a first negative output terminal, a second negative output terminal, and a third negative output terminal. The control circuit includes a dual-color temperature control circuit and a multi-color temperature switching circuit. The dual-color temperature control circuit has a first input terminal, a first output terminal, and a first shift switch. The first input terminal is electrically connected to the negative input terminal. The first shift switch selectively controls the connection and disconnection of the first input terminal and the first output terminal. The first output terminal is electrically connected to the first negative output terminal through a fifth resistor. The multi-color temperature switching circuit has a second input terminal, three or more multi-color temperature control output terminals, and a second shift switch. The second input terminal is electrically connected to the negative input terminal. The second shift switch controls the second input terminal to selectively connect to each multi-color temperature control output terminal. The second negative output terminal and the third negative output terminal are each electrically connected to at least one multi-color temperature control output terminal. Alternatively, the control circuit includes a multicolor temperature switching circuit and a fifth resistor. The multicolor temperature switching circuit has a second input terminal, three or more multicolor temperature control output terminals, and a second shift switch. The second input terminal is electrically connected to the negative input terminal and electrically connected to the first negative output terminal through the fifth resistor. The second shift switch controls the second input terminal to selectively connect to each multicolor temperature control output terminal. The second negative output terminal and the third negative output terminal are electrically connected to at least one multicolor temperature control output terminal.

[0017] The objective of this utility model can also be achieved by the following technical measures:

[0018] As a more specific embodiment, the multi-color temperature control output terminal has five parts, namely a first control output terminal, a second control output terminal, a third control output terminal, a fourth control output terminal, and a fifth control output terminal. The first control output terminal is electrically connected to the second negative output terminal. The second control output terminal is electrically connected to the second negative output terminal and, through a first resistor, to the third negative output terminal. The third control output terminal is electrically connected to the second negative output terminal and, through a second resistor, to the third negative output terminal. The fourth control output terminal is electrically connected to the third negative output terminal and, through a third resistor, to the second negative output terminal. The fifth control output terminal is electrically connected to the third negative output terminal and, through a fourth resistor, to the second negative output terminal. When the control output terminal is connected to two color temperature light-emitting modules, it has two independent control output connection points. Alternatively, the multi-color temperature control output terminal may also include a sixth control output terminal, which is electrically connected to the third negative output terminal.

[0019] The beneficial effects of this utility model are as follows:

[0020] (1) The control circuit of the multi-color temperature COB light source lamp of this utility model combines a dual color temperature control circuit and a multi-color temperature adjustment circuit. When the lamp's power supply circuit is used in conjunction with a dimmer, it can achieve gradual color temperature and light dimming adjustment.

[0021] (2) The first output terminal of the dual color temperature control circuit in this utility model is electrically connected to the low color temperature light-emitting module. Furthermore, the forward voltage of the low color temperature light-emitting module is lower than the forward voltage of other color temperatures. Therefore, when the dual color temperature control circuit is turned on, each level of the multi-color temperature adjustment circuit can be adjusted to a low color temperature and dim brightness state by the dimmer.

[0022] (3) The dual color temperature control circuit of this utility model is provided with a first shift switch. The first shift switch can control the first input terminal to disconnect from the first output terminal, that is, the first output terminal can be disabled. When the first output terminal is disabled, the multi-color temperature COB light source lamp can use the multi-color temperature adjustment function alone and can be used without a matching dimmer. The user can adjust the position of the second shift switch according to the desired lighting color temperature so that the lamp can be lit up at the desired color temperature as soon as it is turned on.

[0023] (4) The dual color temperature control circuit and the multi-color temperature switching circuit in this utility model can be set on the control box. When the light source of the lamp is a multi-color temperature COB light source, it can be adjusted by connecting the external control box. Attached Figure Description

[0024] Figure 1 This is the circuit schematic diagram of the first embodiment of this utility model.

[0025] Figure 2 for Figure 1Another implementation circuit diagram.

[0026] Figure 3 for Figure 1 Another implementation circuit diagram.

[0027] Figure 4 This is a schematic diagram of the lamp fixture at one angle in this utility model.

[0028] Figure 5 for Figure 4 Another structural diagram from a different angle.

[0029] Figure 6 This is a circuit schematic diagram of the second embodiment of the present invention.

[0030] Figure 7 for Figure 6 Another implementation circuit diagram.

[0031] Figure 8 This is a schematic diagram of another embodiment of the lamp in this utility model.

[0032] Figure 9 This is a schematic diagram of the lamp structure according to the third embodiment of this utility model.

[0033] Figure 10 for Figure 9 Wiring diagram of COB light source.

[0034] Figure 11 for Figure 9 A schematic diagram of the control circuit of the junction box.

[0035] Figure 12 This is a schematic diagram of the circuit principle of the fourth embodiment of this utility model.

[0036] Figure 13 This is a schematic diagram of the junction box in the fourth embodiment of the present invention.

[0037] Figure 14 This is a schematic diagram of another embodiment of the junction box in the fourth embodiment of this utility model. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0039] First embodiment, see Figure 1 , Figure 4 and Figure 5As shown, a multi-color-temperature COB light source lamp includes a COB light source 1. The COB light source 1 is equipped with a high color temperature light-emitting module 13, a medium color temperature light-emitting module 12, and a low color temperature light-emitting module 11. The operating voltage of the low color temperature light-emitting module 11 is lower than that of the other two color temperature light-emitting modules. One end of each of the three light-emitting modules is connected in parallel and used for electrical connection to a power supply pole (+ pole). It also includes a dual-color temperature control circuit and a multi-color temperature switching circuit; the dual-color temperature control circuit is provided with a first input terminal 20, a first output terminal 21, a second output terminal 22 and a first shift switch 2. The first input terminal 20 is used to electrically connect to another power supply pole (- pole). The first shift switch 2 is a double-pole toggle switch. The first shift switch 2 selectively controls the connection of the first input terminal 20 to the first output terminal 21 and the second output terminal 22 (when connected to the second output terminal 22, it is in neutral, that is, the first output terminal 21 is disconnected). The first output terminal 21 is provided with two independent output terminals. One output terminal is electrically connected to the other end of the low color temperature light-emitting module 11 through the fifth resistor R5, and the other output terminal is electrically connected to the other end of the high color temperature light-emitting module 13 through the sixth resistor R6.

[0040] The first input terminal 20 is connected to the first output terminal 21 and the second output terminal 22.

[0041] See Figure 2 As shown, the other output terminal of the first output terminal 21 is not electrically connected to the other end of the high color temperature light-emitting module 13.

[0042] The multi-color temperature switching circuit has a second input terminal 30, five multi-color temperature control output terminals, and a second shift switch 3. The second input terminal 30 is used to electrically connect to another power supply pole (- pole), and the second shift switch 3 controls the second input terminal 30 to selectively connect to each of the multi-color temperature control output terminals. The five multi-color temperature control output terminals are the first control output terminal 31, the second control output terminal 32, the third control output terminal 33, the fourth control output terminal 34, and the fifth control output terminal 35; each control output terminal has two independent control output connection points.

[0043] Specifically, the first control output terminal 31 is electrically connected to the other end of the medium color temperature light-emitting module 12; the two control output terminals of the second control output terminal 32 are respectively electrically connected to the medium color temperature light-emitting module 12 and the other end of the high color temperature light-emitting module 13 via the first resistor R1; the two control output terminals of the third control output terminal 33 are respectively electrically connected to the medium color temperature light-emitting module 12 and the other end of the high color temperature light-emitting module 13 via the second resistor R2; the two control output terminals of the fourth control output terminal 34 are respectively electrically connected to the high color temperature light-emitting module 13 and the other end of the medium color temperature light-emitting module 12 via the third resistor R3; the two control output terminals of the fifth control output terminal 35 are respectively electrically connected to the high color temperature light-emitting module 13 and the other end of the medium color temperature light-emitting module 12 via the fourth resistor R4. The fourth resistor R4 and the sixth resistor R6 are both protective resistors.

[0044] The color temperatures of the high color temperature light-emitting module 13, the medium color temperature light-emitting module 12, and the low color temperature light-emitting module 11 are 5000K, 2700K, and 1800K, respectively, and the forward voltages of the high color temperature light-emitting module 13, the medium color temperature light-emitting module 12, and the low color temperature light-emitting module 11 are 36V, 36V, and 30V, respectively.

[0045] The multi-color temperature COB light source includes a high color temperature light-emitting module, a medium color temperature light-emitting module, and a low color temperature light-emitting module disposed in the central circular area of ​​the substrate. The low color temperature light-emitting module is located on the bisector of the central circular area, and the high color temperature light-emitting module and the medium color temperature light-emitting module are disposed on both sides of the low color temperature light-emitting module. The substrate has a positive terminal 14 (the positive terminal 14 is electrically connected to the + terminal of the power supply) and three negative terminals (the three negative terminals are the low color temperature negative input terminal 15, the medium color temperature negative input terminal 16, and the high color temperature negative input terminal 17, respectively). One end of the high color temperature light-emitting module, the medium color temperature light-emitting module, and the low color temperature light-emitting module is connected in parallel and connected to the positive terminal 14. The other end of the high color temperature light-emitting module, the medium color temperature light-emitting module, and the low color temperature light-emitting module is connected to the high color temperature negative input terminal 17, the medium color temperature negative input terminal 16, and the low color temperature negative input terminal 15, respectively.

[0046] The high color temperature light-emitting module 13, the medium color temperature light-emitting module 12, and the low color temperature light-emitting module 11 each include multiple LED chips connected in series and / or in parallel, and a phosphor coating. The phosphor coating covers the corresponding LED chips of the high color temperature light-emitting module 13, the medium color temperature light-emitting module 12, and the low color temperature light-emitting module 11. The area of ​​the high color temperature light-emitting module 13, the medium color temperature light-emitting module 12, and the low color temperature light-emitting module 11 decreases sequentially.

[0047] The forward currents of the high color temperature light-emitting module 13, the medium color temperature light-emitting module 12, and the low color temperature light-emitting module 11 are 300VmA-400mA, 300VmA-400mA, and 150mA-200mA, respectively.

[0048] The first resistor R1 has a resistance of 33 ohms; the second resistor R2 has a resistance of 3.3 ohms; the third resistor R3 has a resistance of 7.5 ohms; the fifth resistor R5 has a resistance of 82 ohms; and the fourth resistor R4 has a resistance of 200 ohms.

[0049] See Figure 3 As shown, the fifth control output terminal 35 is only electrically connected to the other end of the high color temperature light-emitting module 13 (that is, the other control output terminal of the fifth control output terminal 35 is not connected to any other light-emitting module).

[0050] The COB light source 1 is mounted on the lamp body 4, and the dual-color temperature control circuit and multi-color temperature switching circuit are also mounted on the lamp body 4. (See also...) Figure 8 The diagram shown is a schematic diagram of the lamp body 4 of another embodiment of the lamp.

[0051] Its working principle is: Figure 1 Taking the multi-color temperature switching circuit with five multi-color temperature control output terminals as an example, the first shift switch 2 mentioned above can also be understood as a DTW (dual-channel dual-color temperature) mode and a 5CCT (5-level color temperature adjustment) mode switching switch. The five multi-color temperature control output terminals of the multi-color temperature switching circuit represent the five levels of 5CCT. When the first input terminal 20 is connected to the first output terminal 21, it is a combination control of DTW mode and 5CCT mode. When the first input terminal 20 is connected to the second output terminal 22, it is a simple 5CCT mode control.

[0052] When the first input terminal 20 and the second output terminal 22 are connected (simple 5CCT mode control), when mode 1 is connected (first control output terminal 31 and second input terminal 30 are connected), the medium color temperature light-emitting module 12 (2700K) lights up; when mode 2 is connected (second control output terminal 32 and second input terminal 30 are connected), the medium color temperature light-emitting module 12 (2700K) lights up, and the brightness of the high color temperature light-emitting module 13 (5000K) is controlled by the current limiting of the first resistor R1, and it mixes with 2700K to form a 3000K color temperature; when mode 3 is connected (third control output terminal 3 .... Block 13 (5000K) has its brightness controlled by the current limiting of the second resistor R2, and its color temperature is mixed with 2700K to achieve 3500K. When level 4 is activated (the fourth control output terminal 34 is connected to the second input terminal 30), the high color temperature light-emitting module 13 (5000K) lights up, and the brightness of the medium color temperature light-emitting module 12 (2700K) is controlled by the current limiting of the third resistor R3, and its color temperature is mixed with 5000K to achieve 4000K. When level 5 is activated (the fifth control output terminal 35 is connected to the second input terminal 30), the high color temperature light-emitting module 13 (5000K) lights up. Under normal operating voltage and current, the medium color temperature light-emitting module 12 cannot light up because it is current-limited by the larger resistance of the fourth resistor R4. As can be seen from the above, when using a simple 5CCT level control, the color temperatures of levels 1-5 are 2700K, 3000K, 3500K, 4000K, and 5000K, respectively.

[0053] When the first input terminal 20 is connected to the first output terminal 21, and a dimmer is provided in the power input, each adjustment level of the 5CCT range is connected to a low color temperature light-emitting module 11. Because the forward voltage and forward current of the low color temperature light-emitting module 11 are low, it will always light up as long as other color temperature light-emitting modules are lit. The dimmer can also be adjusted to ensure that only the low color temperature light-emitting module 11 is lit, and to achieve brightness adjustment. With this combination, the color temperatures of levels 1-5 are 1800K-2500K, 1800K-2700K, 1800K-3000K, 1800K-3500K, and 1800K-4000K, respectively.

[0054] The second embodiment differs from the first embodiment in that: see Figure 6 and Figure 7 As shown, the multi-color temperature control output terminal also includes a sixth control output terminal 36, which is electrically connected to the high color temperature light-emitting module 13. Wherein, Figure 6 Another output terminal of the first output terminal 21 is electrically connected to the other end of the high color temperature light-emitting module 13 through the sixth resistor R6; Figure 7 The other output terminal of the first output terminal 21 is not electrically connected to the other end of the high color temperature light-emitting module 13.

[0055] The third embodiment differs from the first embodiment in that: see Figures 9-11 As shown, the lamp body 4 is provided with a lead wire, and the lead wire is provided with a control box 5. The dual color temperature control circuit and the multi-color temperature switching circuit are set on the control box 5. Figure 10 The "+", "C-", "W-", and "Y-" on the left side of the middle are... Figure 11 The "+", "C-", "W-", and "Y-" markings on the right side indicate the corresponding terminals.

[0056] Combination Figures 9-11 As shown, a control box 5 for a multi-color temperature COB light source includes a box body 6 and a control circuit 60. The control circuit 60 is provided on the box body 6. The control circuit 60 is provided with an input line 61, an output line 62 and the control circuit 60. The input line 61 includes a positive input terminal (power supply + terminal) and a negative input terminal (power supply - terminal). The output line 62 includes a positive output terminal (+), a first negative output terminal (C-), a second negative output terminal (W-), and a third negative output terminal (Y-).

[0057] The control circuit 60 includes a dual-color temperature control circuit 60 and a multi-color temperature switching circuit. The dual-color temperature control circuit 60 has a first input terminal 20, a first output terminal 21, and a first shift switch 2. The first input terminal 20 is electrically connected to the negative input terminal. The first shift switch 2 selectively controls the connection and disconnection of the first input terminal 20 and the first output terminal 21. The first output terminal 21 is electrically connected to the first negative output terminal through a fifth resistor R5. The multi-color temperature switching circuit has a second input terminal 30, five multi-color temperature control output terminals, and a second shift switch 3. The second input terminal 30 is electrically connected to the negative input terminal. The second shift switch 3 controls the second input terminal 30 to selectively connect to each multi-color temperature control output terminal. The second negative output terminal and the third negative output terminal are each electrically connected to at least one multi-color temperature control output terminal.

[0058] Specifically, the five multi-color temperature control output terminals are designated as a first control output terminal 31, a second control output terminal 32, a third control output terminal 33, a fourth control output terminal 34, and a fifth control output terminal 35. The first control output terminal 31 is electrically connected to the second negative output terminal. The second control output terminal 32 is electrically connected to the second negative output terminal and, through a first resistor R1, to the third negative output terminal. The third control output terminal 33 is electrically connected to the second negative output terminal and, through a second resistor R2, to the third negative output terminal. The fourth control output terminal 34 is electrically connected to the third negative output terminal and, through a third resistor R3, to the second negative output terminal. The fifth control output terminal 35 is electrically connected to the third negative output terminal and, through a fourth resistor R4, to the second negative output terminal. When a control output terminal is connected to two color temperature light-emitting modules, it has two independent control output connection points.

[0059] Combination Figures 12 to 14 As shown, another control box 5 for a multi-color temperature COB light source includes a box body 6 and a control circuit 60. The control circuit 60 is provided on the box body 6. The control circuit 60 is provided with an input line 61, an output line 62 and the control circuit 60. The input line 61 includes a positive input terminal (power supply + terminal) and a negative input terminal (power supply - terminal). The output line 62 includes a positive output terminal (+), a first negative output terminal (C-), a second negative output terminal (W-), and a third negative output terminal (Y-).

[0060] The control circuit 60 includes a multi-color temperature switching circuit and a fifth resistor R5. The multi-color temperature switching circuit has a second input terminal 30, five multi-color temperature control output terminals, and a second shift switch 3. The second input terminal 30 is electrically connected to the negative input terminal and is electrically connected to the first negative output terminal through the fifth resistor R5. The second shift switch 3 controls the second input terminal 30 to selectively connect to each of the multi-color temperature control output terminals. The second negative output terminal and the third negative output terminal are electrically connected to at least one of the multi-color temperature control output terminals.

[0061] Specifically, the five multi-color temperature control output terminals are designated as a first control output terminal 31, a second control output terminal 32, a third control output terminal 33, a fourth control output terminal 34, and a fifth control output terminal 35. The first control output terminal 31 is electrically connected to the second negative output terminal. The second control output terminal 32 is electrically connected to the second negative output terminal and, through a first resistor R1, to the third negative output terminal. The third control output terminal 33 is electrically connected to the second negative output terminal and, through a second resistor R2, to the third negative output terminal. The fourth control output terminal 34 is electrically connected to the third negative output terminal and, through a third resistor R3, to the second negative output terminal. The fifth control output terminal 35 is electrically connected to the third negative output terminal and, through a fourth resistor R4, to the second negative output terminal. When a control output terminal is connected to two color temperature light-emitting modules, it has two independent control output connection points.

[0062] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A multi-color temperature COB light source lamp, comprising a COB light source (1), wherein the COB light source (1) is provided with three light-emitting modules, one end of each of the three light-emitting modules is connected in parallel and used for electrical connection with a power supply, characterized in that: It also includes a dual-color temperature control circuit and a multi-color temperature switching circuit; The dual-color temperature control circuit is provided with a first input terminal (20), a first output terminal (21) and a first shift switch (2). The first input terminal (20) is used to be electrically connected to another power supply. The first shift switch (2) selectively controls the connection between the first input terminal (20) and the first output terminal (21). The first output terminal (21) is electrically connected to the other end of a light-emitting module. The multi-color temperature switching circuit is provided with a second input terminal (30), three or more multi-color temperature control output terminals and a second shift switch (3). The second input terminal (30) is used to be electrically connected to another power supply terminal. The second shift switch (3) controls the second input terminal (30) to be selectively electrically connected to each multi-color temperature control output terminal. The other end of the other two light-emitting modules is electrically connected to at least one multi-color temperature control output terminal respectively.

2. The multi-color temperature COB light source lamp according to claim 1, characterized in that: The three light-emitting modules are a high color temperature light-emitting module (13), a medium color temperature light-emitting module (12), and a low color temperature light-emitting module (11). The operating voltage of the low color temperature light-emitting module (11) is lower than that of the other two color temperature light-emitting modules. The first output terminal (21) of the dual color temperature control circuit is electrically connected to at least the other end of the low color temperature light-emitting module (11).

3. The multi-color temperature COB light source lamp according to claim 2, characterized in that: The multi-color temperature control output terminal is provided with five terminals, namely the first control output terminal (31), the second control output terminal (32), the third control output terminal (33), the fourth control output terminal (34), and the fifth control output terminal (35). The first control output terminal (31) is electrically connected to the other end of the medium color temperature light-emitting module (12); the second control output terminal (32) is electrically connected to the other end of the medium color temperature light-emitting module (12) and the high color temperature light-emitting module (13) through the first resistor (R1); the third control output terminal (33) is electrically connected to the other end of the medium color temperature light-emitting module (12) and the high color temperature light-emitting module (13) through the second resistor (R2); the fourth control output terminal (34) is electrically connected to the other end of the high color temperature light-emitting module (13) and the medium color temperature light-emitting module (12) through the third resistor (R3); the fifth control output terminal (35) is electrically connected to the other end of the high color temperature light-emitting module (13) and the medium color temperature light-emitting module (12) through the fourth resistor (R4), or the fifth control output terminal (35) is only electrically connected to the other end of the high color temperature light-emitting module (13); When the control output terminal is connected to two color temperature light-emitting modules, the control output terminal has two independent control output connection points.

4. The multi-color temperature COB light source lamp according to claim 3, characterized in that: The multi-color temperature control output terminal also includes a sixth control output terminal (36), which is electrically connected to the high color temperature light-emitting module (13).

5. The multi-color temperature COB light source lamp according to claim 3 or 4, characterized in that: The first output terminal (21) of the dual color temperature control circuit is electrically connected to the high color temperature light-emitting module (13) and the low color temperature light-emitting module (11) respectively. The first output terminal (21) is provided with two independent output terminals. The other end of the low color temperature light-emitting module (11) is electrically connected to one output terminal directly or through the fifth resistor (R5), and the other end of the high color temperature light-emitting module (13) is electrically connected to the other output terminal through the sixth resistor (R6). Alternatively, the first output terminal (21) is electrically connected to the other end of the low color temperature light-emitting module (11) directly or through the fifth resistor (R5).

6. The multi-color temperature COB light source lamp according to claim 2, characterized in that: The color temperatures of the high color temperature light-emitting module (13), the medium color temperature light-emitting module (12), and the low color temperature light-emitting module (11) are 5000K, 2700K, and 1800K-2000K, respectively, and the forward voltages of the high color temperature light-emitting module (13), the medium color temperature light-emitting module (12), and the low color temperature light-emitting module (11) are 36V, 36V, and 30V, respectively.

7. The multi-color temperature COB light source lamp according to claim 5, characterized in that: The first resistor (R1) has a resistance of 33 ohms; the second resistor (R2) has a resistance of 3.3 ohms; the third resistor (R3) has a resistance of 7.5 ohms; the fifth resistor (R5) has a resistance of 82 ohms; and the fourth resistor (R4) and the sixth resistor (R6) are protective resistors.

8. The multi-color temperature COB light source lamp according to claim 2, characterized in that: The COB light source (1) is set on the lamp body (4), and the dual color temperature control circuit and multi-color temperature switching circuit are set on the lamp body (4). Alternatively, the lamp body (4) is provided with a lead wire, and a control box (5) is provided on the lead wire. The dual color temperature control circuit and multi-color temperature switching circuit are set on the control box (5).

9. A control box for a multi-color temperature COB light source, comprising a box body and a control circuit, characterized in that: The box is equipped with a control circuit, which includes an input line, an output line, and the control circuit itself. The input line includes a positive input terminal and a negative input terminal, and the output line includes a positive output terminal, a first negative output terminal, a second negative output terminal, and a third negative output terminal. The control circuit includes a dual-color temperature control circuit and a multi-color temperature switching circuit. The dual-color temperature control circuit has a first input terminal (20), a first output terminal (21), and a first shift switch (2). The first input terminal (20) is electrically connected to the negative input terminal. The first shift switch (2) selectively controls the connection and disconnection of the first input terminal (20) and the first output terminal (21). The first output terminal (21) is electrically connected to the first negative output terminal through a fifth resistor (R5). The multi-color temperature switching circuit has a second input terminal (30), three or more multi-color temperature control output terminals, and a second shift switch (3). The second input terminal (30) is electrically connected to the negative input terminal. The second shift switch (3) controls the second input terminal (30) to selectively connect to each multi-color temperature control output terminal. The second negative output terminal and the third negative output terminal are each electrically connected to at least one multi-color temperature control output terminal. Alternatively, the control circuit includes a multi-color temperature switching circuit and a fifth resistor (R5). The multi-color temperature switching circuit has a second input terminal (30), three or more multi-color temperature control output terminals and a second shift switch (3). The second input terminal (30) is electrically connected to the negative input terminal and electrically connected to the first negative output terminal through the fifth resistor (R5). The second shift switch (3) controls the second input terminal (30) to selectively connect to each multi-color temperature control output terminal. The second negative output terminal and the third negative output terminal are electrically connected to at least one multi-color temperature control output terminal.

10. The control box for a multi-color temperature COB light source according to claim 9, characterized in that: The multi-color temperature control output terminal has five parts, namely a first control output terminal (31), a second control output terminal (32), a third control output terminal (33), a fourth control output terminal (34), and a fifth control output terminal (35). Among them, the first control output terminal (31) is electrically connected to the second negative electrode output terminal; the second control output terminal (32) is electrically connected to the second negative electrode output terminal and the third negative electrode output terminal through a first resistor (R1); the third control output terminal (33) is electrically connected to the second negative electrode output terminal and the third negative electrode output terminal through a second resistor (R2); the fourth control output terminal (34) is electrically connected to the third negative electrode output terminal and the second negative electrode output terminal through a third resistor (R3); the fifth control output terminal (35) is electrically connected to the third negative electrode output terminal and the second negative electrode output terminal through a fourth resistor (R4). When the control output terminal is connected to two color temperature light-emitting modules, the control output terminal has two independent control output connection points. Alternatively, the multicolor temperature control output terminal may further include a sixth control output terminal (36), which is electrically connected to the third negative output terminal.

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