Light source module, lighting device and light and color adjusting system

Abstract

The utility model relates to the technical field of optics, and discloses a light source module, a lighting device and a light and color adjusting system. According to the light source module provided by the utility model, the first light-emitting module and the second light-emitting module are designed on the first light-emitting unit, the third light-emitting module and the fourth light-emitting module are designed on the second light-emitting unit, the first light-emitting module is used for emitting light with low color temperature, and the second light-emitting module and the third light-emitting module are used for emitting light with intermediate color temperature; the fourth light-emitting module is used for emitting high-color-temperature light. The light of the first light color, the light of the second light color and the light of the third light color are subjected to light mixing output during current modulation of the power supply module, wide-range color temperature adjustment can be achieved, color development of all color temperature intervals can be accurate through light mixing display of different areas, and the existing light color deviation problem is avoided. Meanwhile, through the control design of the utility model, the wide-range adjustment of three color temperatures on two control lines can be realized, and the hardware design cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of lighting, and specifically relates to a light source module, a lighting device and a dimming and color-tuning system. Background Technique

[0002] With the wide promotion of the usage modes and application scenarios of intelligent lighting, intelligent lighting has gradually entered all aspects of people's lives. However, in the existing multi-color temperature light source adjustment solutions, there are the following problems:

[0003] 1. The color temperature adjustment range of related products on the market is relatively narrow, mostly in two ranges of 2700~5700K and 3000~6500K. In order to achieve multi-color temperature adjustment, the light colors of conventional 2000K and 6500K are often mixed and matched. However, in this solution, it is easy for the intermediate color temperature such as 4000K to appear pink, affecting the lighting experience.

[0004] 2. In addition, the industry also provides a combination of three color temperatures to achieve, such as 2700K / 4000K / 5700K. The adjustment in the range of 2700~5700K is achieved by a group of 2700K and 5700K, and the adjustment in the range of 4000~5700K is achieved by a group of 4000K / 5700K; this does increase the adjustment range and solves the problem of light color deviation to a certain extent, but the effect is not ideal, and the lamp needs to add a drive and control circuit, and also needs to add a group of light sources, which greatly increases the design cost and difficulty.

[0005] The above solutions cannot completely solve the problems of light color deviation and cost control, which is not conducive to the development of intelligent lighting. Content of the Utility Model

[0006] In order to solve the deficiencies of the above-mentioned prior art, the utility model provides a light source module, a lighting device and a dimming and color-tuning system. The light source module is designed with a first light-emitting unit and a second light-emitting unit to achieve two-way three-color adjustment, not only realizing the accurate light display of the color temperature of intelligent lighting, but also only requiring the drive and control of two light sources in this solution, reducing the hardware design cost.

[0007] The technical effects to be achieved by the utility model are realized through the following aspects:

[0008] In the first aspect, the utility model provides a light source module, including:

[0009] A first light-emitting unit, including a first light-emitting module, a second light-emitting module, a first control module and a first electrode pad. The first control module is connected to the first electrode pad, the first light-emitting module and the second light-emitting module, and the first control module controls the current ratio flowing to the first light-emitting module and the second light-emitting module according to the first input current of the first electrode pad;

[0010] The second light-emitting unit includes a third light-emitting module, a fourth light-emitting module, a second control module, and a second electrode pad. The second control module is connected to the second electrode pad, the third light-emitting module, and the fourth light-emitting module, and the second control module controls the current ratio flowing to the third light-emitting module and the fourth light-emitting module according to the second input current of the second electrode pad.

[0011] And a power supply unit, the power supply unit is connected to the first electrode pad and outputs a first input current, and the power supply unit is connected to the second electrode pad and outputs a second input current; the power supply unit modulates and outputs the first input current and the second input current according to the total input current.

[0012] Wherein, the first light-emitting module is used to emit light of a first light color, the second light-emitting module and the third light-emitting module are used to emit light of a second light color, and the fourth light-emitting module is used to emit light of a third light color.

[0013] In some implementation manners, the color temperature of the first light color is less than 2700K, the color temperature of the third light color is greater than 5000K, and the color temperature of the second light color is between 2700K - 5000K.

[0014] In some implementation manners, the power supply module includes a constant current power supply, a linear constant current chip, a first resistor, a second resistor, a third resistor, and a fourth resistor;

[0015] The constant current power supply is provided with a positive output terminal and a negative output terminal. The positive output terminal is connected to the positive terminals of the first control module and the second control module, and the negative output terminal is connected to the power supply ground.

[0016] The negative terminal of the first control module is connected to the third resistor and the fourth resistor through the first resistor. The third resistor is connected to the current setting terminal of the linear constant current chip, and the fourth resistor is connected to the power supply ground.

[0017] The negative terminal of the second control module is connected to the constant current output terminal of the linear constant current chip through the second resistor. The grounding terminal of the linear constant current chip is connected to the power supply ground.

[0018] Wherein, the power supply module controls the output ratio of the first input current and the second input current through the linear constant current chip.

[0019] In some implementation manners, the constant current power supply outputs an adjustable total input current of 0.1 - 100%.

[0020] In some implementations, the current setting terminal of the linear constant current chip detects the magnitude of the input total current. When the voltage at the current setting terminal rises to reach a preset first threshold, the first light emitting unit is lit and the second light emitting unit is not lit; when the voltage at the current setting terminal drops to reach a preset second threshold, the first light emitting unit is not lit and the second light emitting unit is lit.

[0021] In some implementations, the first control module receives a first input current and adjusts the currents flowing to the first light emitting module and the second light emitting module according to a preset first current ratio table; the second control module receives a second input current and adjusts the currents flowing to the third light emitting module and the fourth light emitting module according to a preset second current ratio table.

[0022] In some implementations, the first light emitting unit is disposed on a first substrate, the second light emitting unit is disposed on a second substrate, and the first substrate and the second substrate are separately disposed, wherein the first light emitting unit and the second light emitting unit are separately powered in a single path.

[0023] In some implementations, the first light emitting unit and the second light emitting unit are integrated on an integrated substrate.

[0024] In some implementations, when the first light emitting unit and the second light emitting unit are integrated on an integrated substrate, the first light emitting unit and the second light emitting unit are spaced apart.

[0025] The first light emitting module and the second light emitting module are adjacent to each other, and the third light emitting module and the fourth light emitting module are adjacent to each other.

[0026] In some implementations, when the first light emitting unit and the second light emitting unit are integrated on an integrated substrate, a first light source area and a second light source area are provided on the integrated substrate. The second light source area is disposed along the outer peripheral side of the first light source area. The first control module, the second control module, the first electrode pad and the second electrode pad are disposed outside the second light source area.

[0027] The first light emitting module and the fourth light emitting module are alternately arranged at intervals in the first light source area, and the second light emitting module and the third light emitting module are arranged at intervals on the second light source area.

[0028] In some embodiments, the first light emitting module, the second light emitting module, the third light emitting module and the fourth light emitting module all adopt blue light chips with a wavelength of 440 nm to 490 nm. Different components of phosphor are coated on the blue light chips of the first light emitting module, the second light emitting module, the third light emitting module and the fourth light emitting module respectively.

[0029] The light of the first light color is formed by the blue light chip of the first light emitting module exciting the phosphor above.

[0030] The light of the second light color is formed by exciting the phosphor above by the blue light chips of the second light-emitting module and the third light-emitting module respectively and mixing them;

[0031] The light of the third light color is formed by exciting the phosphor above by the blue light chip of the fourth light-emitting module.

[0032] In a second aspect, the present utility model provides an illumination device, including a housing and a radiator, as well as a light source module as described above. The housing is provided with a light-emitting surface. The light source module is fixed inside the housing and projects light along the light-emitting surface. The radiator is connected to the light source module.

[0033] In this implementation manner, the illumination device can be applied to intelligent lighting in various usage modes and application scenarios, realizing two-channel three-color adjustment of the illumination device, not only achieving accurate light rendering of the color temperature of intelligent lighting, but also only requiring the drive and control of two-channel light sources in this solution, reducing the hardware design cost.

[0034] In a third aspect, the present utility model provides a dimming and color-tuning system, including a control terminal. The dimming and color-tuning system further includes an illumination device as described above. The illumination device includes a control unit;

[0035] The control terminal is electrically connected to the control unit, or

[0036] The control terminal exchanges information with the control unit.

[0037] In this implementation manner, the dimming and color-tuning system can be applied to intelligent lighting in various usage modes and application scenarios. Through the interaction between the control terminal and the illumination device, intelligent adjustment of the illumination device can be realized, achieving the intelligent lighting function of multiple scenarios and multiple uses.

[0038] In summary, the present utility model has at least the following advantages:

[0039] 1. For the light source module provided by the present utility model, by designing the first light-emitting module and the second light-emitting module in the first light-emitting unit, and designing the third light-emitting module and the fourth light-emitting module in the second light-emitting unit, the first light-emitting module is used to emit light with a low color temperature, the second light-emitting module and the third light-emitting module are used to emit light with an intermediate color temperature, and the fourth light-emitting module is used to emit light with a high color temperature. Through the current modulation of the power supply module, the light of the first light color, the second light color, and the third light color is mixed and output, which can not only achieve a wide range of color temperature adjustment, but also make the color rendering accurate in each color temperature range through different-region mixed light display, avoiding the problem of existing light color deviation.

[0040] 2. The light source module provided by the present utility model further provides a first control module and a second control module, and the first control module and the second control module respectively receive the current signals of the power supply unit; the first control module is used to adjust the current ratio of the first light-emitting module, and the second control module is used to adjust the current ratio of the second light-emitting module. Through the control design of the present utility model, a wide-range adjustment of three color temperatures can be realized on two control lines, reducing the hardware design cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic structural diagram of the light source module according to Embodiment 1 of the present utility model.

[0042] Figure 2 It is a schematic circuit diagram of the power supply unit according to Embodiment 1 of the present utility model.

[0043] Figure 3 It is a schematic curve diagram of the total input current, the proportion of the first light-emitting unit, and the current proportion of the second light-emitting unit according to Embodiment 1 of the present utility model.

[0044] Figure 4 It is a first schematic diagram of the light source module according to Embodiment 1 of the present utility model.

[0045] Figure 5 It is a second schematic diagram of the light source module according to Embodiment 1 of the present utility model.

[0046] Figure 6 It is a third schematic diagram of the light source module according to Embodiment 1 of the present utility model.

[0047] Figure 7 It is a schematic flowchart of the mixed light method according to Embodiment 3 of the present utility model.

[0048] Figure 8 It is a CIE1931 chromaticity coordinate point distribution diagram with the first light-emitting module being 2000K and the fourth light-emitting module being 6500K according to Embodiment 3 of the present utility model.

[0049] Figure 9 It is a CIE1931 chromaticity coordinate point distribution diagram with the first light-emitting module being 1800K and the fourth light-emitting module being 14000K according to Embodiment 3 of the present utility model.

[0050] Markings in the figure:

[0051] 110. First light-emitting unit; 111. First light-emitting module; 112. Second light-emitting module; 113. First control module; 114. First electrode pad; 115. First substrate;

[0052] 120. Second light-emitting unit; 121. Third light-emitting module; 122. Fourth light-emitting module; 123. Second control module; 124. Second electrode pad; 125. Second substrate;

[0053] 130. Power supply unit;

[0054] 140. Integrated substrate;

[0055] A. Constant current power supply; U1. Constant current chip; R1. First resistor; R2. Second resistor; R3. Third resistor; R4. Fourth resistor. Detailed implementation mode

[0056] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments are part of the embodiments of the present invention, rather than all of the embodiments.

[0057] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the present invention claimed, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0058] Embodiment 1:

[0059] Please refer to the attached Figure 1 A light source module of the present invention includes a first light-emitting unit 110, a second light-emitting unit 120 and a power supply unit 130. Among them, the power supply unit 130 is used to adjust the output current of the first light-emitting unit 110 and the second light-emitting unit 120 to control the light source display of the first light-emitting unit 110 and the second light-emitting unit 120.

[0060] Specifically, the first light-emitting unit 110 includes a first light-emitting module 111, a second light-emitting module 112, a first control module 113, and a first electrode pad 114. The first control module 113 is connected to the first electrode pad 114, the first light-emitting module 111, and the second light-emitting module 112, and the first control module 113 controls the current ratio flowing to the first light-emitting module 111 and the second light-emitting module 112 according to the first input current of the first electrode pad 114. The second light-emitting unit 120 includes a third light-emitting module 121, a fourth light-emitting module 122, a second control module 123, and a second electrode pad 124. The second control module 123 is connected to the second electrode pad 124, the third light-emitting module 121, and the fourth light-emitting module 122, and the second control module 123 controls the current ratio flowing to the third light-emitting module 121 and the fourth light-emitting module 122 according to the second input current of the second electrode pad 124. The power supply unit 130 is connected to the first electrode pad 114 and outputs the first input current, and the power supply unit 130 is connected to the second electrode pad 124 and outputs the second input current. The power supply unit 130 modulates and outputs the first input current and the second input current according to the total input current.

[0061] Among them, the first light-emitting module is used to emit light of a first light color, the second light-emitting module and the third light-emitting module are used to emit light of a second light color, and the fourth light-emitting module is used to emit light of a third light color. In a specific example, the first light color may be a low color temperature, the second light color may be an intermediate color temperature, and the third light color may be a high color temperature.

[0062] In the above solution, the power supply unit 130 controls the ratio of the first input current and the second input current respectively according to the total input current. The first control module 113 controls the current ratio of the first light-emitting module 111 and the second light-emitting module 112 according to the first input current. The second control module 123 controls the current ratio of the third light-emitting module 121 and the fourth light-emitting module 122 according to the second input current. Through the power supply unit 130, the first control module 113, and the second control module 123, a wide range of color temperature adjustment of the light source module is achieved, and accurate color rendering in each color temperature range can be achieved through mixing light display in different regions, avoiding the problem of existing light color deviation. At the same time, a wide range of adjustment of three color temperatures is realized on two control lines, reducing the hardware design cost.

[0063] Among them, the above-mentioned first control module 113 and second control module 123 can be light source control chips of the OZ8020A series. The first control module 113 can control the output current ratio of the first light-emitting module 111 and the second light-emitting module 112 according to the built-in circuit characteristics. In addition, a first current ratio table can be preset in the first control module 113. The first current ratio table can be stored in the memory of the first control module 113. By identifying the first input current of the first control module 113, querying the first current ratio table, obtaining the current ratios of the first light-emitting module 111 and the second light-emitting module 112, and adjusting the current output through the built-in circuit of the first control module 113. In a specific example, the first control module sets a first input terminal, a first output terminal, and a second output terminal. The first input terminal is connected to the first electrode pad, the first output terminal is connected to the first light-emitting module 111, and the second output terminal is connected to the second light-emitting module 112. The first control module controls the current ratio of the first output terminal and the second output terminal according to the first input current.

[0064] Similarly, the second control module 123 can control the output current ratio of the third light-emitting module 121 and the fourth light-emitting module 122 according to the built-in circuit characteristics. In addition, a first current ratio table can be preset in the second control module 123. The second current ratio table can be stored in the memory of the second control module 123. By identifying the second input current of the first control module 113, querying the second current ratio table, obtaining the current ratios of the third light-emitting module 121 and the fourth light-emitting module 122, and adjusting the current output through the built-in circuit of the second control module 123. In a specific example, the second control module sets a second input terminal, a third output terminal, and a fourth output terminal. The second input terminal is connected to the second electrode pad, the third output terminal is connected to the third light-emitting module, and the fourth output terminal is connected to the fourth light-emitting module. The second control module controls the current ratio of the third output terminal and the fourth output terminal according to the second input current.

[0065] The first light-emitting module, the second light-emitting module, the third light-emitting module, and the fourth light-emitting module all use blue light chips with a wavelength of 440 nm to 490 nm. At the same time, different components of phosphor are coated on the blue light chips of the first light-emitting module, the second light-emitting module, the third light-emitting module, and the fourth light-emitting module respectively.

[0066] The phosphor includes green phosphor, yellow-green phosphor, orange phosphor, red phosphor, etc. The types of phosphor are selected and the proportion is allocated according to the requirements for realizing different light colors, so as to realize the mixed light output of three-color light.

[0067] Specifically, the specific components of the phosphor are preferably a combination of nitride red and GaYAG yellow-green powder, and are formulated in different proportions according to the requirements of light emission and color temperature.

[0068] Driven by the first control module or the second control module:

[0069] The blue light chip of the first light-emitting module excites the phosphor above to form light of a first light color, and the first light color is a low color temperature light less than 2700K, such as 2000K;

[0070] The blue light chips of the second light-emitting module and the third light-emitting module respectively excite the phosphor above and mix to form light of a second light color; the second light color is M color light, and the color temperature can be between low color temperature and high color temperature, such as 3500K, 4000K;

[0071] The blue light chip of the fourth light-emitting module excites the phosphor above to form light of a third light color; the third light color is greater than 5000K low color temperature, such as 6500K, 14000K.

[0072] The light of the first light color, the light of the second light color, and the light of the third light color are finally mixed and emitted to the outside.

[0073] In some implementation manners, refer to Figure 2 , the power supply module includes a constant current power supply, a linear constant current chip, a first resistor, a second resistor, a third resistor, and a fourth resistor; the constant current power supply is provided with a positive output terminal and a negative output terminal, the positive output terminal is connected to the positive extreme ends of the first control module 113 and the second control module 123, and the negative output terminal is connected to the power ground; the negative extreme end of the first control module 113 is connected to the third resistor and the fourth resistor through the first resistor, the third resistor is connected to the current setting terminal of the linear constant current chip, and the fourth resistor is connected to the power ground; the negative extreme end of the second control module 123 is connected to the constant current output terminal of the linear constant current chip through the second resistor, and the grounding terminal of the linear constant current chip is connected to the power ground; wherein, the power supply module controls the output ratio of the first input current and the second input current through the linear constant current chip.

[0074] In this embodiment, the utility model controls the first input current and the second input current flowing to the first light-emitting unit 110 and the second light-emitting unit 120 through the power supply unit 130. Specifically,

[0075] The constant current power supply can output an adjustable total input current, and the total input current varies from 0.1% to 100%. The first light-emitting unit 110 is a cold light source, and the second light-emitting unit 120 is a warm light source. R1, R2, R3, and R4 are the first resistor, the second resistor, the third resistor, and the fourth resistor respectively. U1 is a linear constant current chip. The first pin of the linear constant current chip is the current setting terminal, the third pin is the constant current output terminal, the second pin is the ground terminal, and the first pin is the current setting lead. According to the voltage on the current setting lead, the output current of the third pin is adjusted, and the output current changes linearly. The higher the voltage of the first pin current setting pin, the smaller the output current, and vice versa. Among them, the constant current chip can be a single-channel LED constant current drive chip with the model SM24AXXXM or other chips that can implement the above functions.

[0076] The working principle of the power supply unit 130 of the present utility model is as follows: The current distribution between the first light-emitting unit 110 and the second light-emitting unit 120 is set by R1, R2, R3, and R4, and is distributed by the linear constant current chip U1. When the current output by the constant current power supply A is the largest, the current flows through the light source module 1, R1, and R4 to the negative electrode. Because the current is the largest, the current flowing through R4 is the largest, and the highest voltage value is formed on the resistors R4 and R3, resulting in the voltage of the first pin current setting terminal of U1 rising to reach the first threshold value H1 at which U1 is cut off, so that there is no output current at the third pin of U1. At this time, all the current output by the constant current power supply forms a loop through the first light-emitting unit 110, R1, and R4 to the negative electrode, and the warm light is on.

[0077] When the current output by the constant current power supply A decreases, the current flows through the first light-emitting unit 110, R1, and R4 to the negative electrode, and the current flowing through R4 decreases, and the voltage formed on R4 drops. When the voltage is lower than the threshold value H1 at which U1 is cut off, a part of the current output by the constant current power supply A branches out and flows through the second light-emitting unit 120, R2, U1, and to the negative electrode to form a loop. At this time, the current ratios flowing through the first light-emitting unit 110 and the second light-emitting unit 120 are inversely proportional and form a complementary relationship, that is, the current ratio of the first light-emitting unit 110 plus the current ratio of the second light-emitting unit 120 is equal to the total input current output by the constant current power supply A. The current ratio of the first light-emitting unit 110 decreases, and the current ratio of the second light-emitting unit 120 increases, and vice versa. The current ratios are shown in Table 1. The first light-emitting module emits a light source of the first light color, and the first light color is 2000K. The second light-emitting module and the third light-emitting module emit light sources of the second light color, and the second light color is M color light, which can be between 2000K and 6500K. The fourth emission module emits a light source of the third light color, and the third light color is 6500K. The current ratios are as Figure 3 .

[0078]

[0079] Table 1 shows the relationship between the total input current and the current ratio of the first light-emitting unit and the second light-emitting unit.

[0080] As the current output by the constant current power supply A decreases, the current flowing through R1 and R4 continues to decrease, the voltage across R4 also continues to decrease, and the voltage across R3 also decreases accordingly. When the voltage at pin 1 of U1 drops to the set threshold H2, the current output by the constant current power supply A all passes through the second light-emitting unit 120, R2, U1 to the negative pole to form a loop. At this time, only the warm light is on. Among them, the first input current flowing to the first light-emitting unit 110 can be ignored. As follows Figure 3 shown.

[0081] In some implementation manners, refer to Figure 4 , the first light-emitting unit 110 is disposed on the first substrate 115, the second light-emitting unit 120 is disposed on the second substrate 125, and the first substrate 115 and the second substrate 125 are separately disposed. Among them, the first light-emitting unit 110 and the second light-emitting unit 120 are respectively powered by a single circuit. In this embodiment, the first light-emitting unit 110 and the second light-emitting unit 120 are separately disposed, but the first light-emitting unit 110 and the second light-emitting unit 120 can be flexibly installed. It can not only realize the installation in multiple scenarios and for multiple purposes, but also avoid the heat accumulation of the light source chip and the control chip through the separately disposed first light-emitting unit 110 and second light-emitting unit 120. Improve the heat dissipation performance of the light source module.

[0082] In some implementation manners, the first light-emitting unit 110 and the second light-emitting unit 120 are integrally disposed on an integrated substrate. In this embodiment, the first light-emitting unit 110 and the second light-emitting unit 120 can be integrated into an integrated light source, and can be integrated by the HP or COB method. The first light-emitting module 111, the second light-emitting module 112, the third light-emitting module 121, and the fourth light-emitting module 122 are all formed by using blue light chips with a wavelength band of 440 nm to 490 nm to emit light sources. The integrated substrate is an aluminum substrate or a fiberglass board. To improve the stability and miniaturization characteristics of the light source assembly.

[0083] In a specific example of the above implementation manner, refer to Figure 5 , when the first light-emitting unit 110 and the second light-emitting unit 120 are integrated on the integrated substrate, the first light-emitting unit 110 and the second light-emitting unit 120 are separated.

[0084] The first light-emitting module 111 and the second light-emitting module 112 are arranged adjacent to each other, and the third light-emitting module 121 and the fourth light-emitting module 122 are arranged adjacent to each other. The light-emitting surface is divided into two parts. The first part includes the first light-emitting module 111 and the second light-emitting module 112, and the second part is the third light-emitting module 121 and the fourth light-emitting module 122. Among them, the first light-emitting module emits light of a first light color, which is a low-color-temperature light less than 2700K, such as 2000K. The second light-emitting module and the third light-emitting module emit light of a second light color, which is M-color light, and the color temperature can be between low color temperature and high color temperature, such as 3500K, 4000K. The fourth emitting module emits light of a third light color, which is a low color temperature greater than 5000K, such as 6500K, 14000K. These two parts are powered by two separate circuits and are controlled by two ICs, namely the first control module 113 and the second control module 123, to adjust the ratio of the two light colors.

[0085] In a specific example of the above implementation, refer to Figure 6 , when the first light-emitting unit 110 and the second light-emitting unit 120 are integrated on the integrated substrate, a first light source area and a second light source area are provided on the integrated substrate. The second light source area is arranged along the outer peripheral side of the first light source area. The first control module 113, the second control module 123, the first electrode pad 114, and the second electrode pad 124 are arranged outside the second light source area. The first light-emitting module 111 and the fourth light-emitting module 122 are arranged alternately at intervals in the first light source area, and the second light-emitting module 112 and the third light-emitting module 121 are arranged at intervals on the second light source area. Refer to Figure 6 , the integrated substrate is used to fix and connect the LED chip light sources and the IC devices. The LED chip light sources are the first light-emitting module 111, the second light-emitting module 112, the third light-emitting module 121, and the fourth light-emitting module 122, and the IC devices are the first control module 113 and the second control module 123.

[0086] The first light-emitting module emits a light source of a first light color, which is a low color temperature less than 2700K, such as 2000K. The second light-emitting module and the third light-emitting module emit a light source of a second light color, which is M-color light, and the color temperature can be between low color temperature and high color temperature, such as 3500K, 4000K. The fourth emitting module emits a light source of a third light color, which is a low color temperature greater than 5000K, such as 6500K, 14000K. The second light source area can be annular and is designed to surround the first light source area. Among them, the second light source area can be divided into four areas, and the second light-emitting module 112 and the third light-emitting module 121 are arranged alternately in the four areas. The first control module 113 and the second control module 123 are arranged adjacent to each other outside the second light source area. The first electrode pad 114 and the second electrode pad 124 are arranged adjacent to each other and are located on the other side of the second light source area.

[0087] Embodiment 2:

[0088] Based on Embodiment 1, the present utility model further provides an embodiment of a lighting device, which includes a housing, a radiator, and a light source module of Embodiment 1. The housing is provided with a light-emitting surface, the light source module is fixed inside the housing and projects light along the light-emitting surface, and the radiator is connected to the light source module.

[0089] In this implementation manner, the lighting device can be applied to intelligent lighting in various usage modes and application scenarios to achieve two-way three-color adjustment of the lighting device, not only realizing accurate light rendering of the color temperature of intelligent lighting, but also only requiring the driving and control of two light sources in this solution, thus reducing the hardware design cost.

[0090] Embodiment 3:

[0091] The present utility model provides a dimming and color mixing system, which includes a control terminal. The dimming and color mixing system further includes the lighting device as described in Embodiment 2, and the lighting device includes a control unit; the control terminal is electrically connected to the control unit, or the control terminal exchanges information with the control unit. In this embodiment, the control terminal can be a conventional control panel (such as a mechanical switch panel), an intelligent control panel or a remote control. When the control terminal is a conventional control panel, the control terminal is electrically connected to the control unit of the linear lamp. When the control terminal is an intelligent control panel or a remote control, a first wireless communication module is provided on the control unit and a second wireless communication module is provided on the control terminal; the control terminal is electrically connected to the control unit, and / or the first wireless communication module exchanges information with the second wireless communication module. In addition, the control terminal can also be an intelligent mobile terminal (such as a mobile phone, a tablet computer, an intelligent wearable device, etc.), or an artificial intelligence robot. It can be seen that the dimming and color mixing system provided with the above lighting device has more accurate color temperature display, higher safety factor and lower cost.

[0092] Embodiment 4:

[0093] Figure 7 An embodiment of a light mixing method provided by the present utility model is shown. This light mixing method is based on the light source module of Embodiment 1. This method includes:

[0094] 710. Obtain the first chromaticity coordinates and the first luminous flux of the first light color;

[0095] 720. Obtain the second chromaticity coordinates and the second luminous flux of the third light color;

[0096] 730. According to the first chromaticity coordinates, the first luminous flux, the second chromaticity coordinates, and the second luminous flux, calculate the target chromaticity coordinates and the target luminous flux of the second light color through the CIE1931Yxy digital representation algorithm.

[0097] In a specific example, it is known that the first light-emitting module has a low color temperature of 2000K, CIE1931 chromaticity coordinate points (x: 0.5269, y: 0.4133), and a luminous flux of 90 lm;

[0098] It is known that the fourth light-emitting module has a high color temperature of 6500K. For example: CIE1931 chromaticity coordinate points (x: 0.3136, y: 0.3237), and a luminous flux of 144 lm. The M light color result calculated by the mixed light method of this application is: 3500K, duv 0.015, CIE1931 chromaticity coordinate points (0.4222, 0.4359), and a luminous flux of 90 lm. Specifically, based on the CIE1931 Yxy digital representation algorithm, according to

[0099] The formula for calculating Yxy from the tristimulus values of an object is: (1);

[0100] Calculating the tristimulus values of an object from Yxy: (2);

[0101] Calculating the x m , y m , Y m of the intermediate color temperature of the second light color, and substituting the second chromaticity coordinates, second luminous flux xg, yg, Yg of the third light color, and the first chromaticity coordinates, first luminous flux xd, yd, Yd of the first light color into formulas (1) and (2) for iterative calculation to obtain the target chromaticity coordinates and target luminous flux of the second light color.

[0102] In a specific embodiment, it is known that the first light color has a low color temperature of 2000K, CIE1931 chromaticity coordinate points (x: 0.5269, y: 0.4133), and a luminous flux of 90 lm; it is known that the third light color has a high color temperature of 6500K. For example: CIE1931 chromaticity coordinate points (x: 0.3136, y: 0.3237), and a luminous flux of 144 lm. Its current distribution is as shown in Table 1 in Embodiment 1. The correspondence between the coordinates of the CIE1931 chromaticity coordinate points and the color temperature and luminous flux is shown in Table 2, where x is the abscissa, y is the ordinate, CCT is the color temperature, and Y is the luminous flux. See the CIE1931 chromaticity coordinate point distribution diagram in Figure 8 .

[0103] x y CCT Y 0.3136 0.323752 6495.501 143.95 0.316141 0.326375 6335.803 141.3 0.318878 0.329202 6173.597 138.6 0.324846 0.335365 5851.766 133.2 0.331576 0.342315 5533.918 127.8 0.339224 0.350213 5220.759 122.4 0.347992 0.359267 4913.058 117 0.37739 0.377603 4087.53 107.28 0.413028 0.394868 3371.661 99.72 0.452842 0.408383 2781.885 94.32 0.492625 0.415197 2326.697 91.08 0.526801 0.413321 2006.472 90

[0104] Table 2 CIE1931 chromaticity relationship table for the first light color with a color temperature of 2000K and the third light color with a color temperature of 6500K.

[0105] In another embodiment, when the low color temperature of the first light color is 1800K and 80Lm; the high color temperature of the third light color is 14000K and 120Lm. The correspondence relationship between the coordinates of the CIE1931 chromaticity coordinate points, color temperature, and luminous flux is shown in Table 3, where x is the abscissa, y is the ordinate, CCT is the color temperature, and Y is the luminous flux. See the CIE1931 chromaticity coordinate point distribution diagram in Figure 9 .

[0106] x y CCT Y 0.26612 0.27042 13245.924 120.1 0.27189 0.27654 11767.908 121.2 0.27793 0.28295 10525.116 122.4 0.2905 0.29627 8623.9825 124.8 0.30377 0.31034 7260.7099 127.2 0.31779 0.32521 6252.3244 129.6 0.33264 0.34095 5486.9941 132 0.36742 0.36694 4308.0215 128.64 0.4046 0.38879 3502.171 121.76 0.44548 0.40503 2868.1711 111.36 0.49229 0.4131 2314.4189 97.44 0.54899 0.40825 1843.5078 80.1

[0107] Table 3 CIE1931 chromaticity relationship table with the first light color at a color temperature of 1800K and the third light color at a color temperature of 14000K.

[0108] In this implementation, the present application can accurately calculate the target chromaticity coordinates and target luminous flux of the second through the light mixing method, thereby confirming the power supply mode and the control strategies of the first control module and the second control module. Through the light mixing method, accurate color rendering in each color temperature range can be further achieved, avoiding the problem of existing light color deviation.

[0109] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0110] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for differential description and cannot be understood as indicating or implying relative importance.

[0111] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0112] In the present utility model, unless otherwise clearly specified or limited, the first feature being above or below the second feature may include direct contact between the first and second features, or may include contact between the first and second features not directly but through additional features therebetween. Further, the first feature being above, on top of, and over the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being below, under, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0113] Although the description of the present utility model is made in conjunction with the above specific embodiments, it will be obvious to those skilled in the art that many substitutions, modifications, and variations can be made in light of the above content. Therefore, all such substitutions, improvements, and variations are included within the spirit and scope of the appended claims.

Claims

1. A light source module, characterized in that, Comprising: A first light-emitting unit, including a first light-emitting module, a second light-emitting module, a first control module, and a first electrode pad. The first control module is connected to the first electrode pad, the first light-emitting module, and the second light-emitting module, and the first control module controls the current ratio flowing to the first light-emitting module and the second light-emitting module according to the first input current of the first electrode pad; A second light-emitting unit, including a third light-emitting module, a fourth light-emitting module, a second control module, and a second electrode pad. The second control module is connected to the second electrode pad, the third light-emitting module, and the fourth light-emitting module, and the second control module controls the current ratio flowing to the third light-emitting module and the fourth light-emitting module according to the second input current of the second electrode pad; And a power supply unit, which is connected to the first electrode pad and outputs a first input current, and is connected to the second electrode pad and outputs a second input current; the power supply unit modulates and outputs the first input current and the second input current according to the total input current; Wherein, the first light-emitting module is used to emit light of a first light color, the second light-emitting module and the third light-emitting module are used to emit light of a second light color, and the fourth light-emitting module is used to emit light of a third light color.

2. The light source module according to claim 1, wherein The color temperature of the first light color is less than 2700K, the color temperature of the third light color is greater than 5000K, and the color temperature of the second light color is between 2700K and 5000K.

3. The light source module according to claim 2, wherein The power supply unit includes a constant current power supply, a linear constant current chip, a first resistor, a second resistor, a third resistor, and a fourth resistor; The constant current power supply is provided with a positive output terminal and a negative output terminal. The positive output terminal is respectively connected to the positive terminals of the first control module and the second control module, and the negative output terminal is connected to the power ground; The negative terminal of the first control module is connected to the third resistor and the fourth resistor through the first resistor. The third resistor is connected to the current setting terminal of the linear constant current chip, and the fourth resistor is connected to the power ground; The negative terminal of the second control module is connected to the constant current output terminal of the linear constant current chip through the second resistor. The grounding terminal of the linear constant current chip is connected to the power ground; Wherein, the power supply unit controls the output ratio of the first input current and the second input current through the linear constant current chip.

4. The light source module according to claim 3, wherein The constant current power supply outputs an adjustable total input current of 0.1 - 100%.

5. The light source module according to claim 3, wherein The current setting terminal of the linear constant current chip detects the magnitude of the total input current. When the voltage at the current setting terminal rises to reach a preset first threshold, the first light-emitting unit lights up and the second light-emitting unit does not light up; When the voltage at the current setting terminal drops to reach a preset second threshold, the first light-emitting unit does not light up and the second light-emitting unit lights up.

6. The light source module according to claim 1, wherein The first control module receives the first input current and adjusts the current flowing to the first light-emitting module and the second light-emitting module according to a preset first current ratio table; the second control module receives the second input current and adjusts the current flowing to the third light-emitting module and the fourth light-emitting module according to a preset second current ratio table.

7. The light source module according to claim 1, wherein The first light-emitting unit is disposed on a first substrate, the second light-emitting unit is disposed on a second substrate, and the first substrate and the second substrate are separately disposed; wherein, the first light-emitting unit and the second light-emitting unit are separately powered in a single path.

8. The light source module according to claim 1, wherein The first light-emitting unit and the second light-emitting unit are integrally disposed on an integrated substrate.

9. The light source module according to claim 8, wherein, The first light-emitting unit and the second light-emitting unit are spaced apart. The first light-emitting module and the second light-emitting module are adjacently disposed, and the third light-emitting module and the fourth light-emitting module are adjacently disposed.

10. The light source module according to claim 8, wherein A first light source area and a second light source area are disposed on the integrated substrate, the second light source area is disposed along the outer peripheral side of the first light source area, and the first control module, the second control module, the first electrode pad and the second electrode pad are disposed outside the second light source area; The first light-emitting module and the fourth light-emitting module are alternately disposed at intervals in the first light source area, and the second light-emitting module and the third light-emitting module are disposed at intervals on the second light source area.

11. The light source module according to claim 2, wherein, The first light-emitting module, the second light-emitting module, the third light-emitting module and the fourth light-emitting module all adopt blue light chips with a wavelength of 440 nm to 490 nm, and different components of phosphor are coated on the blue light chips of the first light-emitting module, the second light-emitting module, the third light-emitting module and the fourth light-emitting module respectively; The light of the first light color is formed by the blue light chip of the first light-emitting module exciting the phosphor above; The light of the second light color is formed by the blue light chips of the second light-emitting module and the third light-emitting module respectively exciting the phosphor above and mixing; The light of the third light color is formed by the blue light chip of the fourth light-emitting module exciting the phosphor above.

12. A lighting device, characterized in that, It includes a housing and a radiator, and the light source module according to any one of claims 1-11. The housing is provided with a light-emitting surface, the light source module is fixed inside the housing and projects light along the light-emitting surface, and the radiator is connected to the light source module.

13. A dimming and color - adjusting system, comprising a control terminal, characterized in that: The dimming and color mixing system further includes the lighting device according to claim 12, and the lighting device includes a control unit; The control terminal is electrically connected to the control unit, or The control terminal exchanges information with the control unit.

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