Lamp device capable of adjusting color temperature

Abstract

The lamp device capable of adjusting the color temperature comprises a first LED lamp assembly provided with more than one LED, and light emitted by the first LED lamp assembly has a first color temperature; light emitted by the second LED lamp assembly has a second color temperature, and the second color temperature is different from the first color temperature; the color temperature adjusting part is connected to at least one of the first LED lamp assembly and the second LED lamp assembly in series, and the color temperature adjusting part comprises at least one of a diode, an LED and a voltage-regulator tube; the color temperature adjusting part is connected with at least one of the first LED lamp assembly and the second LED lamp assembly in series to form a first lamp string where the first LED lamp assembly is located and a second lamp string where the second LED lamp assembly is located, and the first lamp string and the second lamp string are formed by connecting the color temperature adjusting part and at least one of the first LED lamp assembly and the second LED lamp assembly in series. The light-emitting assembly is connected between the voltage source end and the grounding end.

Description

Technical Field

[0001] The present disclosure relates to the field of lamps, and more particularly, to a lamp device capable of adjusting color temperature. Background Art

[0002] In modern life, lighting has become an indispensable part of people's lives. The color temperature adjustment of lamps provides users with diverse choices and comfort. By adjusting the color temperature of lamps, users can create an ideal atmosphere for their work or living space according to their personal preferences and needs. In addition, choosing the right color temperature according to different scenes can not only improve the quality of life, but also reduce energy consumption and achieve green lighting.

[0003] In the prior art, a resistor is inserted in series in the high color temperature LED string of the lamp to significantly reduce the driving current in the high color temperature LED string, so as to achieve a mixture between the high color temperature of the high color temperature LED string of the lamp and the low color temperature of the low color temperature LED string of the lamp to obtain an intermediate color temperature between the high color temperature and the low color temperature. However, in this way of adjusting the color temperature, the heat dissipation caused by the resistor in the high color temperature LED string of the lamp (especially when there is only a single high color temperature LED in the high color temperature LED string) is not negligible, and appropriate thermal management measures need to be taken, which will inevitably increase the size or manufacturing cost of the lamp. Utility Model Content

[0004] In order to overcome the above-mentioned technical problems, the present disclosure provides a lamp device capable of adjusting color temperature, which realizes multi-color temperature adjustment of the lamp device while avoiding the introduction of significant heat dissipation in the LED lamp assembly by connecting in series a color temperature adjustment unit including at least one of a diode, an LED and a voltage regulator tube in an LED lamp assembly with different color temperatures of the lamp, and controlling the on and off of the LED lamp assembly through a manual switch assembly.

[0005] According to an embodiment of the present disclosure, a lamp device capable of adjusting color temperature is provided, comprising: a first LED lamp assembly having more than one LED, light emitted by the first LED lamp assembly having a first color temperature; a second LED lamp assembly having the same number of LEDs as the LEDs in the first LED lamp assembly, light emitted by the second LED lamp assembly having a second color temperature, the second color temperature being different from the first color temperature; a color temperature adjustment unit connected in series to at least one of the first LED lamp assembly and the second LED lamp assembly, the color temperature adjustment unit comprising at least one of a diode, an LED and a voltage regulator; and a manual switch assembly for controlling the on and off of the first LED lamp assembly and the second LED lamp assembly, wherein a first lamp string where the first LED lamp assembly is located and a second lamp string where the second LED lamp assembly is located, formed after the color temperature adjustment unit is connected in series with at least one of the first LED lamp assembly and the second LED lamp assembly, together constitute a light-emitting assembly, and the light-emitting assembly is connected between a voltage source terminal and a ground terminal.

[0006] By connecting a color temperature adjustment unit including at least one of a diode, an LED and a voltage regulator in series in at least one of the first LED lamp assembly and the second LED lamp assembly of the lamp, and controlling the on and off of the LED lamp assembly through a manual switch assembly, multi-color temperature adjustment of the lamp device is achieved while avoiding the introduction of significant heat dissipation in the LED lamp assembly.

[0007] In the color temperature adjustable lamp device according to the present disclosure, the color temperature adjusting unit includes: a first color temperature adjusting unit connected between the second LED lamp assembly and the ground terminal.

[0008] Through the above manner, a specific connection method of the color temperature adjustment unit and one of the first LED lamp assembly and the second LED lamp assembly is provided.

[0009] In the color temperature adjustable lamp device according to the present disclosure, the manual switch assembly includes: a first manual switch assembly connected between the first LED lamp assembly and the ground terminal; and a second manual switch assembly connected between the first color temperature adjustment part and the ground terminal.

[0010] By controlling the on and off of the first LED lamp assembly and the second LED lamp assembly through the first manual switch assembly and the second manual switch assembly arranged in the above manner, a lamp device capable of adjusting between multiple color temperatures can be realized.

[0011] In the color temperature adjustable lamp device according to the present disclosure, the first LED lamp assembly includes one or more first LED strings connected in parallel, each first LED string includes more than one first LED connected in series between a voltage source terminal and a ground terminal, and the first LED has a first color temperature; and the first manual switch assembly includes more than one first switch, each first switch is connected between each first LED string and the ground terminal.

[0012] Through the above-mentioned method, a specific configuration of the first LED lamp assembly and the first manual switch assembly and the connection relationship therebetween are provided.

[0013] In the lamp device capable of adjusting color temperature according to the present disclosure, the second LED lamp assembly includes one or more second LED strings connected in parallel, each second LED string includes one or more second LEDs connected in series between a voltage source terminal and a ground terminal, and the second LEDs have a second color temperature; the first color temperature adjustment unit includes one or more third LEDs connected between the second LED string and the ground terminal on each second LED string; and the second manual switch assembly includes one or more second switches, each second switch is connected between the third LED and the ground terminal on each second LED string.

[0014] Through the above manner, a specific configuration of the second LED lamp assembly, the first color temperature adjustment unit and the second manual switch assembly and the connection relationship therebetween are provided.

[0015] In the color temperature adjustable lamp device according to the present disclosure, the second LED lamp assembly includes one or more second LED strings connected in parallel, each second LED string includes one or more second LEDs connected in series between a voltage source terminal and a ground terminal, and the second LEDs have a second color temperature; the first color temperature adjustment unit includes one or more first diodes connected between the second LED string and the ground terminal on each second LED string; and the second manual switch assembly includes one or more second switches, each second switch is connected between the first diode and the ground terminal on each second LED string.

[0016] Through the above manner, another specific configuration of the second LED lamp assembly, the first color temperature adjustment unit and the second manual switch assembly and the connection relationship therebetween are provided.

[0017] In the color temperature adjustable lamp device according to the present disclosure, the first LED lamp assembly includes two or more first LED strings connected in parallel, each first LED string includes one or more first LEDs connected in series between a voltage source terminal and a ground terminal, and the first LED has a first color temperature; and the first manual switch assembly includes a first switch, the first switch is connected between a first common node of the two or more first LED strings and the ground terminal, and the first common node is between the voltage source terminal and the ground terminal.

[0018] Through the above manner, another specific configuration of the first LED lamp assembly and the first manual switch assembly and the connection relationship therebetween are provided.

[0019] In the color temperature adjustable lamp device according to the present disclosure, the second LED lamp assembly includes two or more second LED strings connected in parallel, each second LED string includes one or more second LEDs connected in series between a voltage source terminal and a ground terminal, and the second LEDs have a second color temperature; the first color temperature adjustment unit includes one or more third LEDs connected between a second common node of the two or more second LED strings and the ground terminal, and the second common node is between the voltage source terminal and the ground terminal; and the second manual switch assembly includes a second switch, and the second switch is connected between the third LED and the ground terminal.

[0020] Through the above manner, another specific configuration of the second LED lamp assembly, the first color temperature adjustment unit and the second manual switch assembly and the connection relationship therebetween are provided.

[0021] In the lamp device capable of adjusting color temperature according to the present disclosure, the second LED lamp assembly includes two or more second LED strings connected in parallel, each second LED string includes one or more second LEDs connected in series between a voltage source terminal and a ground terminal, and the second LEDs have a second color temperature; the first color temperature adjustment unit includes one or more diodes connected between a second common node of the two or more second LED strings and the ground terminal, and the second common node is between the voltage source terminal and the ground terminal; and the second manual switch assembly includes a second switch, and the second switch is connected between the diode and the ground terminal.

[0022] Through the above manner, another specific configuration of the second LED lamp assembly, the first color temperature adjustment unit and the second manual switch assembly and the connection relationship therebetween are provided.

[0023] In the lamp device capable of adjusting color temperature according to the present disclosure, the color temperature adjustment unit further includes: a second color temperature adjustment unit, connected between the first LED lamp component and the ground terminal, the second color temperature adjustment unit includes one or more fourth LEDs respectively connected between each first LED string and the ground terminal, wherein the manual switch component further includes one or more third switches, each third switch is connected between the fourth LED and the ground terminal on each first LED string.

[0024] By adopting the above method, a second color temperature adjustment unit and a switch are further connected to the first LED lamp assembly, so that a lamp device capable of adjusting between multiple color temperatures can be realized.

[0025] In the lamp device capable of adjusting color temperature according to the present disclosure, the color temperature adjustment unit further includes: a second color temperature adjustment unit, connected between the first LED lamp component and the ground terminal, the second color temperature adjustment unit includes one or more second diodes respectively connected between each first LED string and the ground terminal, wherein the manual switch component further includes one or more third switches, each third switch is connected between the second diode and the ground terminal on each first LED string.

[0026] In the above manner, another lighting device capable of adjusting between multiple color temperatures is provided.

[0027] In the color temperature adjustable lamp device according to the present disclosure, the manual switch assembly further comprises one or more fourth switches, each of which is connected between a node between the second LED string and the third LED and the ground terminal on each second LED string.

[0028] In the above manner, another lighting device capable of adjusting between multiple color temperatures is provided.

[0029] In the lighting device capable of adjusting color temperature according to the present disclosure, the color temperature adjustment unit further includes: a second color temperature adjustment unit, connected between the first LED lamp component and the ground terminal, the second color temperature adjustment unit includes one or more fourth LEDs connected between the first common node of the more than two first LED strings and the ground terminal, the fourth LED has a first color temperature, wherein the manual switch component further includes a third switch, and the third switch is connected between the fourth LED and the ground terminal.

[0030] In the above manner, another lighting device capable of adjusting between multiple color temperatures is provided.

[0031] In the lamp device capable of adjusting color temperature according to the present disclosure, the color temperature adjustment unit further includes: a second color temperature adjustment unit, connected between the first LED lamp component and the ground terminal, the second color temperature adjustment unit includes one or more second diodes connected between the first common node of the more than two first LED strings and the ground terminal, wherein the manual switch component further includes a third switch, and the third switch is connected between the second diode and the ground terminal.

[0032] In the above manner, another lighting device capable of adjusting between multiple color temperatures is provided.

[0033] In the color temperature adjustable lamp device according to the present disclosure, the manual switch assembly further includes a fourth switch connected between the second common node of the second LED string and the ground terminal.

[0034] In the above manner, another lighting device capable of adjusting between multiple color temperatures is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0036] Figure 1 A circuit diagram of a lamp device capable of adjusting color temperature according to an embodiment of the present disclosure is shown.

[0037] Figure 2 is a circuit diagram showing a first modified example of the lighting device capable of adjusting color temperature according to the embodiment of the present disclosure.

[0038] Figure 3 is a circuit diagram showing a second modified example of the lighting device capable of adjusting color temperature according to the embodiment of the present disclosure.

[0039] Figure 4 is a circuit diagram showing a third modified example of the lighting device capable of adjusting color temperature according to the embodiment of the present disclosure.

[0040] Figure 5 is a circuit diagram showing a fourth modified example of the lighting device capable of adjusting color temperature according to the embodiment of the present disclosure.

[0041] The reference numerals are as follows:

[0042] 10: Lighting fixtures

[0043] V: voltage source terminal

[0044] G: Ground terminal

[0045] 101: The first LED light assembly

[0046] 1011: First LED string

[0047] 103: Second LED lamp assembly

[0048] 1031: Second LED string

[0049] 105: Color temperature adjustment unit

[0050] 1051: First color temperature adjustment unit

[0051] 1052: Second color temperature adjustment unit

[0052] 107: Manual switch assembly

[0053] 1071: First manual switch assembly

[0054] 1072: Second manual switch assembly

[0055] C1: First common node

[0056] C2: Second common node

[0057] C3: Node

[0058] S1: First switch

[0059] S2: Second switch

[0060] S3: The third switch

[0061] S4: The fourth switch

[0062] D1: First LED

[0063] D2: Second LED

[0064] D3: The third LED

[0065] D4: Fourth LED. DETAILED DESCRIPTION

[0066] In order to enable those skilled in the art to better understand the scheme of the present disclosure, the technical scheme in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present disclosure.

[0067] According to an embodiment of the present disclosure, a lighting device capable of adjusting color temperature is provided. Figure 1 A circuit diagram of a lamp device capable of adjusting color temperature according to an embodiment of the present disclosure is shown. Figure 2 is a circuit diagram showing a first modified example of a lighting device capable of adjusting color temperature according to an embodiment of the present disclosure, Figure 3 is a circuit diagram showing a second modified example of the lighting device capable of adjusting color temperature according to an embodiment of the present disclosure, Figure 4 is a circuit diagram showing a third modified example of the lighting device capable of adjusting color temperature according to an embodiment of the present disclosure, Figure 5 1 is a circuit diagram showing a fourth variation of a lamp device capable of adjusting color temperature according to an embodiment of the present disclosure. Figures 1 to 5 , a lighting device capable of adjusting color temperature according to an embodiment of the present disclosure is described.

[0068] like Figure 1 As shown, the color temperature adjustable lamp device 10 according to the present disclosure includes a first LED lamp assembly 101, a second LED lamp assembly 103, a color temperature adjustment unit 105 and a manual switch assembly 107. Figure 1 In the figure, the first LED lamp assembly, the second LED lamp assembly, the color temperature adjustment unit and the manual switch assembly are shown with the minimum number, but the present disclosure is not limited thereto. The arrangement and number of the above-mentioned components can be as follows: Figures 2 to 5 The above are shown in the modified examples, but the present invention is not limited to these modified examples and can be set as needed.

[0069] The first LED lamp assembly 101 has more than one LED. The light emitted by the first LED lamp assembly 101 has a first color temperature. Figure 1 It is shown that the first LED lamp assembly 101 includes an LED with a color temperature of 3000K.

[0070] The second LED lamp assembly 103 has the same number of LEDs as the first LED lamp assembly 101. The light emitted by the second LED lamp assembly 103 has a second color temperature, which is different from the first color temperature. Figure 1 1 and 2. It is shown that the second LED lamp assembly 103 includes an LED with a color temperature of 6500K.

[0071] The color temperature adjustment unit 105 is connected in series to at least one of the first LED lamp assembly 101 and the second LED lamp assembly 103. The color temperature adjustment unit 105 may include at least one of a diode, an LED, and a voltage regulator. Figure 1 2 shows that the color temperature adjustment unit 105 includes a first color temperature adjustment unit 1051 , which is connected in series between the second LED lamp assembly 103 and the ground terminal G and includes an LED with a color temperature of 6500K.

[0072] Optionally, instead of an LED, the first color temperature adjustment unit 1051 may include a diode or a voltage regulator connected in series between the second LED lamp assembly 103 and the ground terminal G.

[0073] The manual switch assembly 107 controls the first LED lamp assembly 101 and the second LED lamp assembly 103 to turn on and off, so as to adjust the color temperature of the lamp device 10. Figure 1 The manual switch assembly 107 includes a first manual switch assembly 1071 and a second switch assembly 1072. The first manual switch assembly 1071 is connected between the first LED lamp assembly 101 and the ground terminal G, and the second manual switch assembly 1072 is connected between the first color temperature adjustment unit 1051 and the ground terminal G. For example, in Figure 1 In the figure, it is shown that the first manual switch assembly 1071 includes only one first switch S1 and the second manual switch assembly 1072 includes only one second switch S2, but the present disclosure is not limited thereto, and the number of the first switch and the second switch can be set as needed.

[0074] The color temperature adjustment unit 105 and at least one of the first LED lamp assembly 101 and the second LED lamp assembly 103 are connected in series to form a first lamp string where the first LED lamp assembly 101 is located and a second lamp string where the second LED lamp assembly 103 is located, which together constitute a light-emitting assembly, and the light-emitting assembly is connected between the voltage source terminal and the ground terminal. Figure 1 As shown, the second lamp string formed by connecting the first color temperature adjustment unit 1051 and the second LED lamp assembly 103 in series and the first lamp string where the first LED lamp assembly 101 is located together constitute a light-emitting component, which is connected between the voltage source terminal V and the ground terminal G.

[0075] above Figure 1Only the first LED lamp assembly 101 includes only one LED string and only one LED in the LED string, the second LED lamp assembly 103 includes only one LED string and only one LED in the LED string, the first manual switch assembly 1071 includes only one first switch S1, the second manual switch assembly 1072 includes only one second switch S2, and the first color temperature adjustment unit 1051 includes only one LED, but the disclosure is not limited to this. The first LED lamp assembly 101 and the second LED lamp assembly 103 have the same number of LEDs, but the conduction voltages of the two produce a voltage difference. The present invention changes the current distribution on the two LED lamp assemblies by adding the color temperature adjustment unit 1051, thereby adjusting the color temperature.

[0076] Figure 2 is a circuit diagram showing a first modified example of the lighting device capable of adjusting color temperature according to the embodiment of the present disclosure.

[0077] In the first variation, the first LED lamp assembly 101 may include one or more first LED strings 1011 connected in parallel. Figure 2 , the first LED lamp assembly 101 includes two first LED strings 1011 connected in parallel, but the present disclosure is not limited thereto, and the first LED lamp assembly 101 may include one or more than two first LED strings 1011 connected in parallel. In each first LED string 1011, one or more first LEDs D1 are connected in series between the voltage source terminal V and the ground terminal G. For example, Figure 2 It is shown in FIG. 1 that each first LED string 1011 includes three or more first LEDs connected in series. The first LED has a first color temperature, for example, 3000K.

[0078] In the first variation, the first manual switch assembly 1071 may include more than one first switch S1. Figure 2 FIG. 1 shows that the first manual switch assembly 1071 includes two first switches S1 . Each first switch S1 is connected between each first LED string 1011 and the ground terminal G.

[0079] In the first variation, the second LED lamp assembly 103 may include one or more second LED strings 1031 connected in parallel. Figure 2 , the second LED lamp assembly 103 includes two second LED strings 1031 connected in parallel, but the present disclosure is not limited thereto, and the second LED lamp assembly 103 may include one or more than two second LED strings 1031 connected in parallel. In each second LED string 1031, one or more second LEDs D2 are connected in series between the power source V and the ground terminal G. For example, Figure 21 shows that each second LED string 1031 includes three or more second LEDs connected in series. The second LEDs have a second color temperature, for example, 6500K.

[0080] In the first variant, the first color temperature adjusting unit 1051 includes one or more third LEDs D3 connected between the second LED string 1031 and the ground terminal G on each second LED string 1031. For example, Figure 2 , two third LEDs D3 are connected in series between each of the two second LED strings 1031 and the ground terminal G, but the present disclosure is not limited thereto, and the number of third LEDs can be set as required. The third LEDs can have a second color temperature, for example, 6500K.

[0081] Optionally, instead of the third LED, the first color temperature adjustment unit 1051 may include one or more first diodes or voltage regulators connected between the second LED string 1031 and the ground terminal G on each second LED string 1031 .

[0082] In the first variation, the second manual switch assembly 1072 may include more than one second switch S2, for example, Figure 2 1 shows that the second manual switch assembly 1072 includes two second switches S2 , but the present disclosure is not limited thereto, and the number of second switches can be set as required. Each second switch S2 is connected between the third LED and the ground terminal G on each second LED string 1031 .

[0083] Optionally, when the third LED is replaced by a first diode or a voltage regulator, each second switch S2 in the second manual switch assembly 1072 is connected between the first diode or the voltage regulator and the ground terminal G on each second LED string 1031 .

[0084] Figure 3 is a circuit diagram showing a second modified example of the lighting device capable of adjusting color temperature according to the embodiment of the present disclosure.

[0085] Figure 3 A lighting device capable of adjusting color temperature and Figure 2 The difference between the light fixture device capable of adjusting color temperature in the embodiment of the present invention lies in the arrangement of the first manual switch component 1071, the first color temperature adjustment unit 1051 and the second manual switch component 1072, and the arrangement of other components and Figure 2 Similarly, in order to avoid excessive description that makes the present disclosure obscure, the following description is directed to Figure 3 Only describe its Figure 2 The other parts that are the same can refer to Figure 2 description for understanding.

[0086] In the second variation, the first manual switch component 1071 includes a first switch S1. The first switch S1 is connected between the first common node of the two or more first LED strings 1011 and the ground terminal. For example, Figure 3 1 shows a switch S1 connected between a first common node C1 of two first LED strings 1011 and a ground terminal G. Here, the first common node C1 is a common node between the voltage source terminal V and the ground terminal G of more than two first LED strings 1011.

[0087] In the second variation, the first color temperature adjustment unit 1051 includes one or more third LEDs connected between the second common node of the two or more second LED strings 1031 and the ground terminal. Figure 3 1051 includes two third LEDs, which are connected between the second common node C2 of the two second LED strings 1031 and the ground terminal G, but the present disclosure is not limited thereto, and the number of third LEDs can be set as needed. Here, the second common node C2 is a common node between the voltage source terminal V and the ground terminal G of more than two second LED strings 1031.

[0088] Optionally, instead of the third LED, the first color temperature adjustment unit 1051 may include one or more first diodes or voltage regulators connected between the second common node C2 of the two or more second LED strings 1031 and the ground terminal G.

[0089] In the second variation, the second manual switch assembly 1072 includes a second switch S2. For example, Figure 3 As shown in FIG. 1 , the second switch S2 is connected between the third LED and the ground terminal G.

[0090] Optionally, when the third LED is replaced by a first diode or a voltage regulator, the second switch S2 is connected between the first diode or the voltage regulator and the ground terminal G.

[0091] Figure 4 A circuit diagram of a third modified example of the lighting device capable of adjusting color temperature according to an embodiment of the present disclosure is shown.

[0092] Figure 4 A lighting device capable of adjusting color temperature and Figure 2 The difference between the lighting devices that can adjust the color temperature is Figure 4 The second color temperature adjustment unit, the third switch, and the fourth switch are newly added. In addition, Figure 4 The settings of other components in Figure 2 Similarly, in order to avoid excessive description that makes the present disclosure obscure, the following description is directed to Figure 4 Only describe its Figure 2The other parts that are the same can refer to Figure 2 description for understanding.

[0093] In the third variant, the color temperature adjustment unit 105 further includes a second color temperature adjustment unit 1052. The second color temperature adjustment unit 1052 is connected between the first LED lamp assembly 101 and the ground terminal G. The second color temperature adjustment unit 1052 includes one or more fourth LEDs D4 connected between each first LED string 1011 and the ground terminal G. Figure 4 , two fourth LEDs are connected in series between each of the two first LED strings 1011 and the ground terminal G, but the present disclosure is not limited thereto, and the number of fourth LEDs can be set as required. The fourth LED can have a first color temperature, for example, 3000K.

[0094] Optionally, instead of the fourth LED, the second color temperature adjustment unit 1052 may include one or more second diodes or voltage regulators connected between the first LED string 1011 and the ground terminal G on each first LED string 1011 .

[0095] In the third variation, the manual switch assembly 107 further includes one or more third switches S3. Figure 4 The manual switch assembly 107 further includes two third switches S3, but the present disclosure is not limited thereto, and the number of third switches can be set as required. Each third switch S3 is connected between the fourth LED and the ground terminal G on each first LED string 1011.

[0096] Optionally, when the fourth LED is replaced by a second diode or a voltage regulator, each third switch S3 is connected between the second diode or the voltage regulator and the ground terminal G on each first LED string 1011 .

[0097] In the third variation, the manual switch assembly 107 further includes one or more fourth switches S4. Figure 4 The manual switch assembly 107 further includes two fourth switches S4, but the present disclosure is not limited thereto, and the number of fourth switches can be set as needed. Each fourth switch S4 is connected between the node C3 between the second LED string 1031 and the third LED and the ground terminal G on each second LED string 1031.

[0098] Figure 5 A circuit diagram of a fourth modified example of a lighting device capable of adjusting color temperature according to an embodiment of the present disclosure is shown.

[0099] Figure 5 A lighting device capable of adjusting color temperature and Figure 3The difference between the lighting devices that can adjust the color temperature is Figure 5 The second color temperature adjustment unit, the third switch, and the fourth switch are newly added. In addition, Figure 5 The settings of other components in Figure 3 Similarly, in order to avoid excessive description that makes the present disclosure obscure, the following description is directed to Figure 5 Only describe its Figure 3 The other parts that are the same can refer to Figure 3 description for understanding.

[0100] In the fourth variation, the color temperature adjustment unit 105 further includes a second color temperature adjustment unit 1052. The second color temperature adjustment unit 1052 is connected between the first LED lamp assembly 101 and the ground terminal G. The second color temperature adjustment unit 1052 includes one or more fourth LEDs D4 connected between the first common node C1 of the two or more first LED strings 1011 and the ground terminal G. Figure 5 FIG. 1 shows two fourth LEDs connected in series between the first common node C1 of the two first LED strings 1011 and the ground terminal G, but the present disclosure is not limited thereto, and the number of fourth LEDs can be set as required. The fourth LED can have a first color temperature, for example, 3000K.

[0101] Optionally, instead of the fourth LED, the second color temperature adjustment unit 1052 may include one or more second diodes or voltage regulators connected between the first common node C1 of the two or more first LED strings 1011 and the ground terminal G.

[0102] In the fourth variation, the manual switch assembly 107 further includes one or more third switches S3. Figure 5 A third switch S3 is shown connected between the fourth LED and the ground terminal G.

[0103] Optionally, when the fourth LED is replaced by a second diode or a voltage regulator, the third switch S3 is connected between the second diode or the voltage regulator and the ground terminal G.

[0104] In the fourth variation, the manual switch assembly 107 further includes a fourth switch S4. Figure 5 FIG. 4 shows that the fourth switch S4 is connected between the second common node C2 of the second LED string 1031 and the ground terminal G. FIG.

[0105] In the above embodiments of the present disclosure, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0106] In the lamp device capable of adjusting color temperature according to the present invention, a color temperature adjustment unit including at least one of a diode, an LED and a voltage regulator is connected in series in an LED lamp component with different color temperatures of the lamp, and the on and off of the LED lamp component is controlled by a manual switch component, thereby achieving multi-color temperature adjustment of the lamp device while avoiding the significant heat dissipation risk caused by the introduction of resistors in the LED lamp component. At the same time, when a non-resistance device is used as the temperature adjustment unit, such as an LED, the power consumption generated by the LED is small due to the light emission, and a part of the light emission is converted into heat energy rather than the resistance, thereby improving the photoelectric conversion efficiency.

[0107] The above is only a preferred embodiment of the present disclosure. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present disclosure. These improvements and modifications should also be regarded as the scope of protection of the present disclosure.

Claims

1. A lighting device (10) capable of adjusting color temperature, characterized in that: include: A first LED lamp assembly (101) having more than one LED, wherein the light emitted by the first LED lamp assembly has a first color temperature; a second LED lamp assembly (103) having the same number of LEDs as the first LED lamp assembly (101), wherein the light emitted by the second LED lamp assembly (103) has a second color temperature, which is different from the first color temperature; a color temperature adjustment unit (105) connected in series to at least one of the first LED lamp assembly (101) and the second LED lamp assembly (103), wherein the color temperature adjustment unit (105) comprises at least one of a diode, an LED and a voltage regulator; and A manual switch component (107) controls the on and off of the first LED lamp component (101) and the second LED lamp component (103), The color temperature adjustment unit (105) is connected in series with at least one of the first LED lamp assembly (101) and the second LED lamp assembly (103), and the first lamp string in which the first LED lamp assembly is located and the second lamp string in which the second LED lamp assembly is located together constitute a light-emitting assembly, and the light-emitting assembly is connected between a voltage source terminal (V) and a ground terminal (G).

2. The color temperature adjustable lamp device (10) according to claim 1, characterized in that: The color temperature adjustment unit (105) comprises: The first color temperature adjustment unit (1051) is connected between the second LED lamp assembly (103) and the ground terminal (G).

3. The color temperature adjustable lamp device (10) according to claim 2, characterized in that: The manual switch assembly (107) comprises: A first manual switch component (1071) connected between the first LED lamp component (101) and the ground terminal (G); and The second manual switch component (1072) is connected between the first color temperature adjustment unit (1051) and the ground terminal (G).

4. The color temperature adjustable lamp device (10) according to claim 3, characterized in that: The first LED lamp assembly (101) comprises one or more first LED strings (1011) connected in parallel, each of the first LED strings (1011) comprises more than one first LED (D1) connected in series between the voltage source terminal (V) and the ground terminal (G), and the first LED has the first color temperature; and The first manual switch component (1071) includes more than one first switch (S1), and each of the first switches (S1) is connected between each of the first LED strings (1011) and the ground terminal (G).

5. The color temperature adjustable lamp device (10) according to claim 4, characterized in that: The second LED lamp assembly (103) comprises one or more second LED strings (1031) connected in parallel, each of the second LED strings (1031) comprises more than one second LED (D2) connected in series between the voltage source terminal (V) and the ground terminal (G), and the second LED has the second color temperature; The first color temperature adjustment unit (1051) comprises one or more third LEDs (D3) connected between the second LED string (1031) and the ground terminal (G) on each of the second LED strings (1031); and The second manual switch component (1072) includes more than one second switch (S2), and each of the second switches (S2) is connected between the third LED (D3) and the ground terminal (G) on each of the second LED strings (1031).

6. The color temperature adjustable lamp device (10) according to claim 4, characterized in that: The second LED lamp assembly (103) comprises one or more second LED strings (1031) connected in parallel, each of the second LED strings (1031) comprises more than one second LED (D2) connected in series between the voltage source terminal (V) and the ground terminal (G), and the second LED has the second color temperature; The first color temperature adjustment unit (1051) comprises one or more first diodes connected between the second LED string (1031) and the ground terminal (G) on each of the second LED strings (1031); and The second manual switch component (1072) includes more than one second switch (S2), and each of the second switches (S2) is connected between the first diode and the ground terminal (G) on each of the second LED strings (1031).

7. The color temperature adjustable lamp device (10) according to claim 3, characterized in that: The first LED lamp assembly (101) comprises two or more first LED strings (1011) connected in parallel, each of the first LED strings (1011) comprises one or more first LEDs (D1) connected in series between the voltage source terminal (V) and the ground terminal (G), and the first LEDs have the first color temperature; and The first manual switch component (1071) comprises a first switch (S1), wherein the first switch (S1) is connected between a first common node (C1) of two or more first LED strings (1011) and the ground terminal (G), and the first common node (C1) is between the voltage source terminal (V) and the ground terminal (G).

8. The color temperature adjustable lamp device (10) according to claim 7, characterized in that: The second LED lamp assembly (103) comprises two or more second LED strings (1031) connected in parallel, each of the second LED strings (1031) comprises one or more second LEDs (D2) connected in series between the voltage source terminal (V) and the ground terminal (G), and the second LEDs have the second color temperature; The first color temperature adjustment unit (1051) comprises one or more third LEDs (D3) connected between a second common node (C2) of two or more second LED strings (1031) and the ground terminal (G), wherein the second common node (C2) is between the voltage source terminal (V) and the ground terminal (G); and The second manual switch component (1072) includes a second switch (S2), and the second switch (S2) is connected between the third LED (D3) and the ground terminal (G).

9. The color temperature adjustable lamp device (10) according to claim 7, characterized in that: The second LED lamp assembly (103) comprises two or more second LED strings (1031) connected in parallel, each of the second LED strings (1031) comprises one or more second LEDs (D2) connected in series between the voltage source terminal (V) and the ground terminal (G), and the second LEDs have the second color temperature; The first color temperature adjustment unit (1051) comprises one or more diodes connected between a second common node (C2) of two or more second LED strings (1031) and the ground terminal (G), wherein the second common node (C2) is between the voltage source terminal (V) and the ground terminal (G); and The second manual switch component (1072) includes a second switch (S2), and the second switch (S2) is connected between the diode and the ground terminal (G).

10. The color temperature adjustable lamp device according to claim 5, characterized in that: The color temperature adjustment unit (105) further comprises: A second color temperature adjustment unit (1052) is connected between the first LED lamp assembly (101) and the ground terminal (G), wherein the second color temperature adjustment unit (1052) comprises one or more fourth LEDs (D4) respectively connected between each of the first LED strings (1011) and the ground terminal (G). The manual switch assembly (107) further comprises one or more third switches (S3), and each of the third switches (S3) is connected between the fourth LED (D4) and the ground terminal (G) on each of the first LED strings (1011).

11. The color temperature adjustable lamp device (10) according to claim 5, characterized in that: The color temperature adjustment unit (105) further comprises: A second color temperature adjustment unit (1052) is connected between the first LED lamp assembly (101) and the ground terminal (G), and the second color temperature adjustment unit (1052) includes one or more second diodes respectively connected between each of the first LED strings (1011) and the ground terminal (G). The manual switch component (107) further comprises one or more third switches (S3), and each of the third switches (S3) is connected between the second diode and the ground terminal (G) on each of the first LED strings (1011).

12. The color temperature adjustable lamp device (10) according to claim 10 or 11, characterized in that: The manual switch component (107) further comprises one or more fourth switches (S4), each of the fourth switches (S4) being connected between a node (C3) between the second LED string (1031) and the third LED (D3) and the ground terminal (G) on each of the second LED strings (1031).

13. The color temperature adjustable lamp device (10) according to claim 8 or 9, characterized in that: The color temperature adjustment unit (105) further comprises: a second color temperature adjustment unit (1052) connected between the first LED lamp assembly (101) and the ground terminal (G), the second color temperature adjustment unit (1052) comprising one or more fourth LEDs (D4) connected between the first common node (C1) of two or more first LED strings (1011) and the ground terminal (G), the fourth LEDs having the first color temperature, The manual switch assembly (107) further comprises a third switch (S3), and the third switch (S3) is connected between the fourth LED (D4) and the ground terminal (G).

14. The color temperature adjustable lamp device (10) according to claim 8 or 9, characterized in that: The color temperature adjustment unit (105) further comprises: a second color temperature adjustment unit (1052) connected between the first LED lamp assembly (101) and the ground terminal (G), the second color temperature adjustment unit (1052) comprising one or more second diodes connected between the first common node (C1) of more than two first LED strings (1011) and the ground terminal (G), Wherein, the manual switch component (107) further comprises a third switch (S3), and the third switch (S3) is connected between the second diode and the ground terminal (G).

15. The color temperature adjustable lamp device (10) according to claim 13, characterized in that: The manual switch component (107) further comprises a fourth switch (S4), wherein the fourth switch (S4) is connected between the second common node (C2) of the second LED string (1031) and the ground terminal (G).

16. The color temperature adjustable lamp device (10) according to claim 14, characterized in that: The manual switch component (107) further comprises a fourth switch (S4), wherein the fourth switch (S4) is connected between the second common node (C2) of the second LED string (1031) and the ground terminal (G).

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