A light source device and a street lamp with on-demand dimming

Abstract

The application discloses a kind of light source device and street lamp according to demand dimming, including substrate, multiple light emitting modules, power supply module, temperature detection module and control drive module, multiple light emitting modules are distributed in annularly around substrate, wherein, each light emitting module includes carousel, cool white light unit and warm white light unit, control drive module is used to drive each carousel relative to substrate rotation to switch at least between first position state and second position state according to ambient temperature, wherein, when ambient temperature is higher than temperature threshold value, control drive module drives each carousel to rotate to first position state, in first position state, first warm white light ring is sleeved outside first cool white light ring periphery, when ambient temperature is lower than temperature threshold value, control drive module drives each carousel to rotate to second position state, in second position state, second cool white light ring is sleeved outside second warm white light ring periphery, the design is appropriately adjusted color temperature under the condition of keeping brightness unchanged, improve user comfort.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lighting devices, in particular to a light source device for on-demand dimming and a street lamp. BACKGROUND

[0002] Research shows that the color temperature of light cannot affect the temperature of the environment, but can bring illusion to users to adjust the comfort level of users in the environment, for example, when the color temperature of light in the environment is low, it can bring a relatively warm illusion to users, and when the color temperature of light in the environment is high, it can bring a relatively cold illusion to users.

[0003] Therefore, users can adjust the light emitting color temperature of the lighting lamp according to the change of temperature to improve the comfort, for example, in a hot weather environment, the light emitting color temperature of the lighting lamp can be increased to make the environment be rendered relatively cold, and the brain of the user is affected by the light to provide the body with the suggestion that the temperature of the present environment is low.

[0004] The above scheme is usually applied to indoor environment and other environments with low lighting demand, when applied to outdoor environment, the lighting lamp not only needs to consider the rendering of color temperature to the environment, but also needs to consider the lighting in the dark night, and the existing adjustment of the color temperature of the lighting lamp basically selects two light sources with different color temperatures, controls the on-off of the two light sources by outputting two duty cycle signals respectively, and adjusts the frequency of the on-off of the two light sources to realize the adjustment of the color temperature of mixed light. Although this method adjusts the color temperature of mixed light, the light output is also changed due to the change of the on-off frequency of the two light sources, and if there is no accurate detection and calculation, the color temperature of mixed light may reach the demand, but the brightness of the environment is low, which cannot be applied to outdoor lighting. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a light source device for on-demand dimming and a street lamp, which adjusts the color temperature of the environment light appropriately to provide the temperature illusion to the user and improve the comfort of the user under the condition that the brightness of the environment light is kept unchanged.

[0006] According to a first aspect of the present invention, an on-demand dimming light source device includes: a substrate; a plurality of light-emitting modules, wherein the plurality of light-emitting modules are arranged in a ring around the substrate, wherein each light-emitting module includes a turntable, a cool white light unit, and a warm white light unit, the cool white light unit and the warm white light unit being spaced apart on the turntable, the turntable being rotatably mounted on the substrate, and the color temperature of the light emitted by the cool white light unit being higher than the color temperature of the light emitted by the warm white light unit; a power supply module disposed on the substrate, the power supply module being electrically connected to the cool white light unit and the warm white light unit of each of the light-emitting modules respectively to provide constant current power to the cool white light unit and the warm white light unit; a temperature detection module for detecting ambient temperature; and a control drive module electrically connected to the temperature detection module. The control and drive module is used to drive each of the turntables to rotate relative to the substrate according to the ambient temperature, switching between at least a first position state and a second position state. When the ambient temperature is higher than a temperature threshold, the control and drive module drives each of the turntables to rotate to the first position state. In the first position state, each of the cool white light units surrounds a first cool white light ring, and each of the warm white light units surrounds a first warm white light ring, with the first warm white light ring surrounding the outer periphery of the first cool white light ring. When the ambient temperature is lower than the temperature threshold, the control and drive module drives each of the turntables to rotate to the second position state. In the second position state, each of the cool white light units surrounds a second cool white light ring, and each of the warm white light units surrounds a second warm white light ring, with the second cool white light ring surrounding the outer periphery of the second warm white light ring.

[0007] An on-demand dimming light source device according to an embodiment of the present invention has at least the following beneficial effects:

[0008] The application is a light source device for on-demand dimming. The power supply module supplies constant current to the cold white light units and the warm white light units. The temperature detection module detects the ambient temperature. The control driving module drives each rotating disc to rotate relative to the base plate to switch between at least the first position state and the second position state according to the ambient temperature. Since the multiple light emitting modules are distributed in a ring shape, in the first position state and the second position state, the cold white light units can correspondingly surround the first cold white light ring or the second cold white light ring. Similarly, the warm white light units can correspondingly surround the first warm white light ring or the second warm white light ring. First, when the ambient temperature is higher than the temperature threshold, the control driving module drives each rotating disc to rotate to the first position state. At this time, the first warm white light ring is sleeved on the outer periphery of the first cold white light ring. This process changes the positions of the cold white light units and the warm white light units, but does not change the power supply current of the power supply module to the cold white light units and the warm white light units. The brightness of the light output by the entire light source device does not change. However, since each cold white light unit is located on the inner side of the first warm white light ring, the cold white light emitted by each cold white light unit can converge in the middle of the illumination area. The warm white light units are located on the outer periphery of the cold white light units. The light rays will diverge towards the circumference and are not easy to converge. In addition, part of the cold white light rays irradiated towards the outer periphery will mix with the warm white light rays to form a gradient, so that the illumination effect is that the middle area is dense cold white light, and then the gradient gradually changes to relatively dispersed warm white light. At this time, the user can have a relatively low temperature temperature illusion. Similarly, when the ambient temperature is lower than the temperature threshold, the control driving module drives each rotating disc to rotate to the second position state. At this time, the second cold white light ring is sleeved on the outer periphery of the second warm white light ring. This process changes the positions of the cold white light units and the warm white light units, but still does not change the power supply current of the power supply module to the cold white light units and the warm white light units. The brightness of the light output by the entire light source device does not change. However, since each warm white light unit is located on the inner side of the second cold white light ring, the warm white light emitted by each warm white light unit can converge in the middle of the illumination area. The cold white light units are located on the outer periphery of the warm white light units. The light rays will diverge towards the circumference and are not easy to converge. In addition, part of the warm white light rays irradiated towards the outer periphery will mix with the cold white light rays to form a gradient, so that the illumination effect is that the middle area is dense warm white light, and then the gradient gradually changes to relatively dispersed cold white light. At this time, the user can have a relatively high temperature temperature illusion. As can be seen, the design appropriately adjusts the color temperature of the ambient light while keeping the brightness of the ambient light unchanged, provides the user with a temperature illusion, and improves the user's comfort.

[0009] According to some embodiments of the application, the intervals between the multiple light emitting modules are equal. The cold white light units and the warm white light units are centrally symmetrically distributed around the rotating shaft of the rotating disc on the rotating disc.

[0010] According to some embodiments of the present application, the cold white light unit and the warm white light unit each comprise a circuit board arranged on the surface of the rotating disc, a dam ring, a light source group and a light-transmitting potting member, the dam ring is arranged on the circuit board and defines a potting area, the light source group is arranged on the circuit board and located in the potting area, the potting member is filled in the potting area and covers the light source group, the light source group comprises a red light core, a green light core, a blue light core and a yellow light core, the color mixing ratio of the red light core, the green light core, the blue light core and the yellow light core in the cold white light unit is different from the color mixing ratio of the red light core, the green light core, the blue light core and the yellow light core in the warm white light unit; the potting member is free of fluorescent powder or color-changing paint.

[0011] According to some embodiments of the present application, the substrate is provided with a mounting groove, the rotating disc is rotationally arranged in the mounting groove, the substrate is provided with a first male conductive ring and a second male conductive ring which are spaced apart in the circumferential direction of the inner side wall of the mounting groove, the outer side wall of the rotating disc is circumferentially provided with a first female conductive ring and a second female conductive ring, the first male conductive ring can maintain conductive contact with the first female conductive ring when the rotating disc rotates, the second male conductive ring can maintain conductive contact with the second female conductive ring when the rotating disc rotates, the first female conductive ring is electrically connected with the cold white light unit, the second female conductive ring is electrically connected with the warm white light unit, each first male conductive ring in the plurality of light-emitting modules is connected in sequence by wires to form a first string circuit, each second male conductive ring in the plurality of light-emitting modules is connected in sequence by wires to form a second string circuit, the power supply module is connected with the first male conductive rings at the two ends of the first string circuit to supply power to the first string circuit, and the power supply module is connected with the second male conductive rings at the two ends of the second string circuit to supply power to the second string circuit.

[0012] According to some embodiments of the present application, the control and driving module comprises a control module and a driving module, the control module is connected with the temperature detection module and the driving module respectively, and the control module drives each rotating disc to switch between the first position state and the second position state through the driving module according to the ambient temperature.

[0013] According to some embodiments of the present application, the driving module comprises a plurality of magnetic driving assemblies, a plurality of first magnetic matching members and a plurality of second magnetic matching members, the first magnetic matching members and the second magnetic matching members are different in polarity, at least one first magnetic matching member and at least one second magnetic matching member are arranged on each rotating disc, a plurality of magnetic driving assemblies are arranged between each group of adjacent light-emitting modules one by one, the magnetic driving assembly has a first end and a second end, the first end can correspond to the first magnetic matching member or the second magnetic matching member on the rotating disc on one side thereof, the second end can correspond to the second magnetic matching member or the first magnetic matching member on the rotating disc on the other side thereof, the control module is connected with each magnetic driving assembly to make the first end and the second end of each magnetic driving assembly generate different polarities by providing driving current, and the control module can switch the polarities generated by the first end and the second end of each magnetic driving assembly by changing the direction of driving current to make the rotating disc rotate.

[0014] According to some embodiments of the present application, the magnetic driving assembly comprises a magnetic core and a coil winding arranged on the magnetic core, the coil winding in each magnetic driving assembly is arranged on the magnetic core in the same winding direction, the leading end of the magnetic core forms the first end, the trailing end of the magnetic core forms the second end, a plurality of coil windings are connected in sequence to form a magnetic driving string, and the control module is connected with both ends of the magnetic driving string to output driving current and change the direction of driving current.

[0015] According to some embodiments of the present application, the first magnetic matching member and the second magnetic matching member in the same light-emitting module are distributed in a central symmetric manner around the rotation axis of the rotating disc.

[0016] According to some embodiments of the present application, a plurality of positive white light units are further arranged on the substrate, and the plurality of positive white light units are arranged on the outer periphery of all the light-emitting modules.

[0017] The street lamp according to the second aspect of the embodiments of the present application comprises the on-demand dimming light source device disclosed in any of the above embodiments.

[0018] The street lamp according to the embodiments of the present application has at least the following beneficial effects:

[0019] The street lamp of the present application applies the on-demand dimming light source device disclosed in any of the above embodiments, can appropriately adjust the color temperature of the ambient light while keeping the brightness of the ambient light unchanged according to the change of the ambient temperature, provides the temperature illusion for the user, and improves the comfort feeling of the user.

[0020] Additional aspects and advantages of the present application will be made apparent from the following description, which, taken together with the accompanying drawings, describes an embodiment of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0022] Figure 1 is a bottom view of one embodiment of the street lamp of the present application;

[0023] Figure 2 is a perspective view of the light emitting module;

[0024] Figure 3 is a circuit diagram of the power supply module;

[0025] Figure 4 is a structural diagram of one embodiment of the light source device of the present application in a first position state;

[0026] Figure 5 is a structural diagram of one embodiment of the light source device of the present application in a second position state;

[0027] Figure 6 is a structural diagram of the light emitting module;

[0028] Figure 7 is a principle structural block diagram of one embodiment of the light source device of the present application.

[0029] REFERENCE NUMERALS:

[0030] substrate 100; light emitting module 200; rotating disc 210; cool white light unit 220; warm white light unit 230; dam ring 240; glue filling part 250; red lamp wick 261; green lamp wick 262; blue lamp wick 263; yellow lamp wick 264; power supply module 300; temperature detection module 400; control driving module 500; control module 510; driving module 520; magnetic driving assembly 521; first magnetic matching part 522; second magnetic matching part 523; first cool white light ring 610; first warm white light ring 620; second cool white light ring 630; second warm white light ring 640; first female conductive ring 710; second female conductive ring 720; positive white light unit 800. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are for the purpose of explanation of the present application, and should not be understood as a limitation of the present application.

[0032] In the description of the application, it should be understood that, in relation to the orientation description, for example, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0033] In the description of the application, several meanings are one or more, and the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, and above, below, within, etc. are understood as including the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of technical features indicated.

[0034] In the description of the application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0035] As Figures 1-7As shown, the on-demand dimming light source device according to the first aspect of the present application comprises a substrate 100, a plurality of light-emitting modules 200, a power supply module 300, a temperature detection module 400 and a control driving module 500, the plurality of light-emitting modules 200 are distributed in a ring shape on the substrate 100, wherein each light-emitting module comprises a rotating disc 210, a cool white light unit 220 and a warm white light unit 230, the cool white light unit 220 and the warm white light unit 230 are arranged on the rotating disc 210 in a spaced manner, the rotating disc 210 is rotationally arranged on the substrate 100, the light emitted by the cool white light unit 220 has a higher color temperature than the light emitted by the warm white light unit 230, the power supply module 300 is arranged on the substrate 100, the power supply module 300 is electrically connected to the cool white light unit 220 and the warm white light unit 230 of each light-emitting module 200 to supply constant current to the cool white light unit 220 and the warm white light unit 230, the temperature detection module 400 is used to detect the ambient temperature, the control driving module 500 is electrically connected to the temperature detection module 400, and the control driving module 500 is used to drive each rotating disc 210 to rotate relative to the substrate 100 to switch between at least a first position state and a second position state according to the ambient temperature, wherein when the ambient temperature is higher than a temperature threshold, the control driving module 500 drives each rotating disc 210 to rotate to the first position state, in the first position state, each cool white light unit 220 surrounds a first cool white light ring 610, and each warm white light unit 230 surrounds a first warm white light ring 620, and the first warm white light ring is sleeved on the outer periphery of the first cool white light ring 610, and when the ambient temperature is lower than the temperature threshold, the control driving module 500 drives each rotating disc 210 to rotate to the second position state, in the second position state, each cool white light unit 220 surrounds a second cool white light ring 630, and each warm white light unit 230 surrounds a second warm white light ring 640, and the second cool white light ring is sleeved on the outer periphery of the second warm white light ring 640.

[0036] In the present application, the on-demand dimming light source device can be applied to street lamp lighting, garden lamp lighting, lawn lamp lighting, etc. The substrate 100 can be an aluminum substrate 100 or a ceramic substrate 100, the temperature detection module 400 can be selected from conventional temperature sensors, the power supply module 300 usually comprises a rectifier and voltage stabilizing circuit, a constant current control chip, a first switch tube and a second switch tube, the first switch tube and the second switch tube can be made of semiconductor materials, such as MOS1 and MOS2 in Figure 3 The rectifier and voltage stabilizing circuit is used to connect to an external power supply, and performs rectification and voltage stabilization on the power output by the external power supply, such as Figure 3As shown, each cold white light unit 220 is connected into a first string circuit, each warm white light unit 230 is connected into a second string circuit, the first switch tube is connected with the first string circuit, the second switch tube is connected with the second string circuit, the output end of the rectifier voltage stabilizing circuit is connected with the first string circuit and the second string circuit respectively to supply power for the cold white light unit 220 and the warm white light unit 230, the constant current control chip outputs PWM signals to the first switch tube and the second switch tube respectively, thereby controlling the current flowing through the first string circuit and the second string circuit respectively, and controlling the brightness of the cold white light unit 220 and the warm white light unit 230 at the same time. It needs to be explained that the user can change the brightness of the cold white light unit 220 and the warm white light unit 230 by setting the PWM signal, but in the design of changing the brightness of the cold white light unit 220 and the warm white light unit 230, the brightness of the cold white light unit 220 and the warm white light unit 230 is generally not changed.

[0037] The application is a light source device for adjusting light on demand. The power supply module 300 supplies constant current to the cold white light unit 220 and the warm white light unit 230. The temperature detection module 400 detects the ambient temperature. The control driving module 500 drives each rotating disc 210 to rotate relative to the base plate 100 to switch between at least the first position state and the second position state according to the ambient temperature. Since the plurality of light emitting modules 200 are distributed in a ring shape, in the first position state and the second position state, the cold white light unit 220 can correspondingly surround the first cold white light ring 610 or the second cold white light ring 630. Similarly, the warm white light unit 230 can correspondingly surround the first warm white light ring 620 or the second warm white light ring 640. First, when the ambient temperature is higher than the temperature threshold, the control driving module 500 drives each rotating disc 210 to rotate to the first position state. At this time, the first warm white light ring is sleeved on the outer periphery of the first cold white light ring 610. This process changes the positions of the cold white light unit 220 and the warm white light unit 230, but does not change the power supply current of the cold white light unit 220 and the warm white light unit 230 supplied by the power supply module 300. The brightness of the light output by the entire light source device does not change. However, since each cold white light unit 220 is located on the inner side of the first warm white light ring 620, the cold white light emitted by each cold white light unit 220 can converge in the middle of the illumination area. The warm white light unit 230 is located on the outer periphery of the cold white light unit 220. The light is easily dispersed in the circumferential direction and is difficult to converge. In addition, part of the cold white light irradiated towards the outer periphery is mixed with the warm white light to form a gradient, so that the illumination effect is that the middle area is dense cold white light, and then the gradient is excessive to relatively dispersed warm white light. At this time, the user can have a relatively low temperature temperature illusion. Similarly, when the ambient temperature is lower than the temperature threshold, the control driving module 500 drives each rotating disc 210 to rotate to the second position state. At this time, the second cold white light ring is sleeved on the outer periphery of the second warm white light ring 640. This process changes the positions of the cold white light unit 220 and the warm white light unit 230, but still does not change the power supply current of the cold white light unit 220 and the warm white light unit 230 supplied by the power supply module 300. The brightness of the light output by the entire light source device does not change. However, since each warm white light unit 230 is located on the inner side of the second cold white light ring 630, the warm white light emitted by each warm white light unit 230 can converge in the middle of the illumination area. The cold white light unit 220 is located on the outer periphery of the warm white light unit 230. The light is easily dispersed in the circumferential direction and is difficult to converge. In addition, part of the warm white light irradiated towards the outer periphery is mixed with the cold white light to form a gradient, so that the illumination effect is that the middle area is dense warm white light, and then the gradient is excessive to relatively dispersed cold white light. At this time, the user can have a relatively high temperature temperature illusion. As can be seen, the design appropriately adjusts the color temperature of the ambient light while keeping the brightness of the ambient light unchanged, provides the user with a temperature illusion, and improves the user's comfort.

[0038] In some embodiments of the application, asFigure 2 , 4 As shown in Figure 5, the intervals between the multiple light-emitting modules 200 are equal, and the cool white light unit 220 and the warm white light unit 230 are centrally symmetrically distributed on the turntable 210 around the axis of rotation of the turntable 210.

[0039] The equal spacing between multiple light-emitting modules 200 makes the light output distribution more uniform. The light output from the warm white light unit 230 or the cool white light unit 220 is more rationally converged, mixed, or dispersed. The cool white light unit 220 and the warm white light unit 230 are centrally symmetrically distributed on the turntable 210 around the axis of rotation of the turntable 210. This means that in the first position state and the second position state, when the turntable 210 rotates 180°, when the cool white light unit 220 is on the inside, the warm white light unit 230 is naturally on the outside, and similarly, when the warm white light unit 230 is on the inside, the cool white light unit 220 is naturally on the outside. This makes the control simpler, the position switching more accurate, and the light emission more uniform.

[0040] In some embodiments of the present invention, such as Figure 6 As shown, both the cool white light unit 220 and the warm white light unit 230 include a circuit board, a dam ring 240, a light source group, and a light-transmitting potting component 250 disposed on the surface of the turntable 210. The dam ring 240 is disposed on the circuit board and encloses and defines the potting area. The light source group is disposed on the circuit board and located within the potting area. The potting component 250 fills the potting area and covers the light source group. The light source group includes a red LED 261, a green LED 262, a blue LED 263, and a yellow LED 264. The color mixing ratio of the red LED 261, green LED 262, blue LED 263, and yellow LED 264 in the cool white light unit 220 is different from that in the warm white light unit 230. The potting component 250 contains no fluorescent powder or color-changing paint.

[0041] The dam ring 240 and the glue filling member 250 can be made of transparent materials such as epoxy resin. The design uses red lamp wicks 261, green lamp wicks 262, blue lamp wicks 263 and yellow lamp wicks 264 to form cold white light and warm white light by combined light emission. The glue filling member 250 does not contain fluorescent powder or color-changing paint, which replaces the traditional scheme of using blue lamp wicks 263 in combination with various colors of fluorescent powder or color-changing paint to excite multiple colors of light, and then mixing cold white light and warm white light. The light mixing effect is better, and the color temperature of the presented cold white light and warm white light is more accurate. In addition, the design uses the dam ring 240 to define a glue filling area for accommodating the light source group, and fills the glue filling member 250 in the glue filling area. The light in the glue filling area can be better mixed in the glue filling member 250, and the light can have a better light collecting effect, and the light emission direction is more orderly, and the light is not too scattered. This is conducive to the light on the inside being concentrated and the light on the outside being scattered when the first position state or the second position state is reached.

[0042] Specifically, the green lamp wicks 262 and the blue lamp wicks 263 in the cold white light unit 220 have a relatively high light emission color ratio, and the yellow lamp wicks 264 and the red lamp wicks 261 have a relatively low light emission color ratio. In the warm white light unit 230, the green lamp wicks 262 and the blue lamp wicks 263 have a relatively low light emission color ratio, and the yellow lamp wicks 264 and the red lamp wicks 261 have a relatively high light emission color ratio.

[0043] In some embodiments of the present application, as shown in Figure 2 The substrate 100 is provided with a mounting groove (not shown in the figure), and the rotating disc 210 is rotationally arranged in the mounting groove. The substrate 100 is provided with a first male conductive ring and a second male conductive ring (not shown in the figure) on the inner side wall of the mounting groove in the circumferential direction and spaced from each other. The outer side wall of the rotating disc 210 is circumferentially provided with a first female conductive ring 710 and a second female conductive ring 720. The first male conductive ring can maintain conductive contact with the first female conductive ring 710 when the rotating disc 210 rotates, and the second male conductive ring can maintain conductive contact with the second female conductive ring 720 when the rotating disc 210 rotates. The first female conductive ring 710 is electrically connected to the cold white light unit 220, and the second female conductive ring 720 is electrically connected to the warm white light unit 230. Each first male conductive ring in the plurality of light emitting modules 200 is connected in sequence by a wire to form a first string circuit, and each second male conductive ring in the plurality of light emitting modules 200 is connected in sequence by a wire to form a second string circuit. The power supply module 300 is connected to the first male conductive rings at the two ends of the first string circuit to supply power to the first string circuit, and the power supply module 300 is connected to the second male conductive rings at the two ends of the second string circuit to supply power to the second string circuit. Thus, after the rotating disc 210 switches between the first position state and the second position state, it still maintains good power supply connection.

[0044] Specifically, the first male conductive ring has two, the first female conductive ring 710 also has two, the first male conductive ring and the first female conductive ring 710 are connected one by one, the first group of the first male conductive ring and the first female conductive ring 710 are used as the positive input, the second group of the first male conductive ring and the first female conductive ring 710 are used as the negative output, and the positive of the cool white light unit 220 is connected with the first group of the first female conductive ring 710, and the negative of the cool white light unit 220 is connected with the second group of the first female conductive ring.

[0045] In the first string, the second group of the first male conductive ring of the first light emitting module 200 is connected with the first group of the first male conductive ring of the next light emitting module 200.

[0046] Similarly, the second male conductive ring has two, the second female conductive ring 720 also has two, the second male conductive ring and the second female conductive ring 720 are connected one by one, the first group of the second male conductive ring and the second female conductive ring 720 are used as the positive input, the second group of the second male conductive ring and the second female conductive ring 720 are used as the negative output, and the positive of the warm white light unit 230 is connected with the first group of the second female conductive ring 720, and the negative of the cool white light unit 220 is connected with the second group of the second female conductive ring.

[0047] In the second string, the second group of the second male conductive ring of the first light emitting module 200 is connected with the first group of the second male conductive ring of the next light emitting module 200.

[0048] In some embodiments of the present application, as shown in Figure 7 The control driving module 500 includes a control module 510 and a driving module 520, the control module 510 is connected with the temperature detection module 400 and the driving module 520 respectively, and the control module 510 drives each rotating disc 210 to switch between the first position state and the second position state through the driving module 520 according to the ambient temperature.

[0049] The control module 510 can include a processor composed of a CPU or a MCU and an auxiliary circuit, the control module 510 performs temperature threshold judgment on the ambient temperature information detected by the temperature detection module 400, and the control module 510 drives each rotating disc 210 through the driving module 520.

[0050] In some embodiments of the present application, as shown in Figure 4 , 5As shown, the driving module 520 comprises a plurality of magnetic driving assemblies 521, a plurality of first magnetic matching members 522 and a plurality of second magnetic matching members 523, the first magnetic matching members 522 and the second magnetic matching members 523 are different in polarity, at least one first magnetic matching member 522 and at least one second magnetic matching member 523 are arranged on each rotating disc 210, the plurality of magnetic driving assemblies 521 are arranged one-to-one between each group of adjacent two light-emitting modules 200, the magnetic driving assembly 521 has a first end and a second end, the first end can correspond to the first magnetic matching member 522 or the second magnetic matching member 523 on the rotating disc 210 on one side thereof, and the second end can correspond to the second magnetic matching member 523 or the first magnetic matching member 522 on the rotating disc 210 on the other side, the control module 510 is connected with each magnetic driving assembly 521 to make the first end and the second end of each magnetic driving assembly 521 generate different polarities from each other by providing a driving current, and the control module 510 can switch the polarities generated by the first end and the second end of each magnetic driving assembly 521 by changing the direction of the driving current to make the rotating disc 210 rotate, which has the advantages of simple structure, easy arrangement, space saving and cost saving.

[0051] Specifically, the end of the first magnetic matching member 522 towards the magnetic driving assembly 521 can be arranged as N-pole, and the end of the second magnetic matching member 523 towards the magnetic driving assembly 521 can be arranged as S-pole, the control module 510 is further provided with a positive and negative current switching circuit, the control module 510 outputs a positive current to form a magnetic field on the magnetic driving assembly 521, and the first end is N-pole and the second end is S-pole, because the plurality of magnetic driving assemblies 521 are arranged one-to-one between each group of adjacent two light-emitting modules 200, the magnetic driving assemblies 521 on both sides of the light-emitting module 200, when the first end (N-pole) of the magnetic driving assembly 521 on one side directly faces the first magnetic matching member 522 (N-pole), the second end (S-pole) of the magnetic driving assembly 521 on the other side will directly face the second magnetic matching member 523 (S-pole), at this time, the magnetic forces repel each other, the first magnetic matching member 522 will tend to move close to the second end of the magnetic driving assembly 521 on the other side, and the second magnetic matching member 523 will tend to move close to the first end of the magnetic driving assembly 521 on one side, then the rotating disc 210 rotates, while when the control module 510 outputs a negative current, the first end will be S-pole and the second end will be N-pole, when the first end (S-pole) of the magnetic driving assembly 521 on one side directly faces the first magnetic matching member 522 (N-pole), the second end (N-pole) of the magnetic driving assembly 521 on the other side will directly face the second magnetic matching member 523 (S-pole), the rotating disc 210 does not rotate, when the first end (S-pole) of the magnetic driving assembly 521 on one side directly faces the second magnetic matching member 523 (S-pole), the second end (N-pole) of the magnetic driving assembly 521 on the other side will directly face the first magnetic matching member 522 (N-pole), then the rotating disc 210 rotates.

[0052] In some embodiments of the present application, each magnetic drive assembly 521 comprises a magnetic core and a coil winding wound on the magnetic core (not shown in the figure), the coil winding in each magnetic drive assembly 521 is wound on the magnetic core in the same direction, the leading end of the magnetic core forms a first end, the trailing end of the magnetic core forms a second end, and the plurality of coil windings are connected end to end in sequence to form a magnetic drive string, and the control module 510 is connected to both ends of the magnetic drive string to output a drive current and change the direction of the drive current.

[0053] The coil winding in each magnetic drive assembly 521 is wound on the magnetic core in the same direction, and the plurality of magnetic drive assemblies 521 are arranged one-to-one between each group of adjacent two light emitting modules 200, the control module 510 outputs a forward current to the magnetic drive string, the polarity of the first end of all the magnetic cores is the same, and the polarity of the second end is also the same, the control module 510 only needs to output one kind of drive current to the magnetic drive string, and only needs to change the direction of the drive current, that is, all the rotating discs 210 can be switched between the first position state and the second position state.

[0054] In some embodiments of the present application, the first magnetic matching part 522 and the second magnetic matching part 523 in the same light emitting module 200 are centrally symmetrically distributed around the rotating shaft of the rotating disc 210, which can make the rotating disc 210 rotate 180° to complete the switching between the first position state and the second position state, the control is simpler, the position switching is more accurate, and the light emission is more uniform.

[0055] In some embodiments of the present application, as shown in the figure, a plurality of positive white light units 800 are further arranged on the substrate 100, and the plurality of positive white light units 800 are arranged on the outer periphery of all the light emitting modules 200.

[0056] Specifically, the color temperature range of the warm white light unit 230 can be set to 2700K-3500K, the color temperature range of the positive white light unit 800 can be set to 5500K-6000K, and the color temperature range of the cold white light unit 220 can be set to 7000K or more.

[0057] When in the first position state, the warm white light unit 230 is in the periphery, and the warm white light will be diffused towards the periphery, at this time, the warm white light can be mixed with the positive white light, so that the light around tends to be positive white light, while the middle part is gathered with cold white light, the ambient light effect is optimized, and the ambient light effect presents a cold state. Similarly, when in the second position state, the cold white light unit 220 is in the periphery, and the cold white light will be diffused towards the periphery, at this time, the cold white light can be mixed with the positive white light, so that the light around tends to be positive white light, while the middle part is gathered with warm white light, the ambient light effect is optimized, and the ambient light effect presents a warm state.

[0058] The street lamp according to the second aspect of the present application comprises the light source device according to any one of the above embodiments.

[0059] The street lamp according to the present application comprises the light source device according to any one of the above embodiments, and can adjust the color temperature of the ambient light appropriately while keeping the brightness of the ambient light unchanged according to the change of the ambient temperature, so as to provide the temperature illusion for the user and improve the comfort of the user.

[0060] The street lamp is distributed along the road, and the present design can switch between the first position state and the second position state automatically according to the ambient temperature without the control of the staff, and can keep the brightness of the ambient light unchanged in the whole road environment, so as to provide sufficient illumination for the vehicles and pedestrians, and can provide the temperature illusion to make the user feel more comfortable.

[0061] The technical features of the above embodiments can be combined arbitrarily, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0062] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and the scope of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A dim-to-need light source arrangement, characterized by The application relates to a light-emitting device, which comprises the following components: a substrate; a plurality of light-emitting modules, which are arranged in a ring shape on the substrate, wherein each light-emitting module comprises a rotating disc, a cold white light unit and a warm white light unit, the cold white light unit and the warm white light unit are arranged on the rotating disc, the rotating disc is arranged on the substrate in a rotating mode, the light emitted by the cold white light unit has a higher color temperature than the light emitted by the warm white light unit; a power supply module arranged on the substrate, the power supply module is electrically connected with the cold white light unit and the warm white light unit of each light-emitting module to supply constant current to the cold white light unit and the warm white light unit; a temperature detection module for detecting the ambient temperature; a control driving module electrically connected with the temperature detection module, the control driving module is used for driving each rotating disc to rotate relative to the substrate to switch between at least a first position state and a second position state according to the ambient temperature, wherein when the ambient temperature is higher than a temperature threshold value, the control driving module drives each rotating disc to rotate to the first position state, in the first position state, each cold white light unit surrounds a first cold white light ring, each warm white light unit surrounds a first warm white light ring, and the first warm white light ring is arranged outside the periphery of the first cold white light ring; when the ambient temperature is lower than the temperature threshold value, the control driving module drives each rotating disc to rotate to the second position state, in the second position state, each cold white light unit surrounds a second cold white light ring, each warm white light unit surrounds a second warm white light ring, and the second cold white light ring is arranged outside the periphery of the second warm white light ring.

2. A dim-to-save light source device according to claim 1, characterized in that: The intervals between the plurality of light-emitting modules are equal, and the cold white light unit and the warm white light unit are arranged in a central symmetry mode around the rotating shaft of the rotating disc on the rotating disc.

3. A dimming on demand light source device according to claim 1, characterized in that: The cold white light unit and the warm white light unit each comprise a circuit board arranged on the surface of the rotating disc, a dam ring, a light source group and a light-transmitting glue-filling part, the dam ring is arranged on the circuit board and defines a glue-filling area, the light source group is arranged on the circuit board and located in the glue-filling area, the glue-filling part is filled in the glue-filling area and covers the light source group, the light source group comprises a red light core, a green light core, a blue light core and a yellow light core, the color mixing ratio of the red light core, the green light core, the blue light core and the yellow light core in the cold white light unit is different from the color mixing ratio of the red light core, the green light core, the blue light core and the yellow light core in the warm white light unit, and the glue-filling part is free of fluorescent powder or color-changing paint.

4. A dimming on demand light source device according to claim 1, characterized in that: The substrate is provided with a mounting groove, the rotating disc is rotationally arranged in the mounting groove, the substrate is provided with a first male conductive ring and a second male conductive ring which are spaced apart in the circumferential direction of the inner side wall of the mounting groove, the outer side wall of the rotating disc is circumferentially provided with a first female conductive ring and a second female conductive ring, the first male conductive ring can maintain conductive contact with the first female conductive ring when the rotating disc rotates, the second male conductive ring can maintain conductive contact with the second female conductive ring when the rotating disc rotates, the first female conductive ring is electrically connected with the cold white light unit, the second female conductive ring is electrically connected with the warm white light unit, each first male conductive ring in the plurality of light emitting modules is connected in sequence by a wire to form a first string circuit, each second male conductive ring in the plurality of light emitting modules is connected in sequence by a wire to form a second string circuit, the power supply module is connected with the first male conductive ring at the two ends of the first string circuit to supply power to the first string circuit, and the power supply module is connected with the second male conductive ring at the two ends of the second string circuit to supply power to the second string circuit.

5. A dimming on demand light source device according to claim 1, characterized in that: The control driving module comprises a control module and a driving module, the control module is connected with the temperature detection module and the driving module, and the control module drives each rotating disc to switch between the first position state and the second position state through the driving module according to the ambient temperature.

6. A dimming on demand light source device according to claim 5, characterized in that: The driving module comprises a plurality of magnetic drive assemblies, a plurality of first magnetic matching members and a plurality of second magnetic matching members, the first magnetic matching members and the second magnetic matching members are different in polarity, at least one first magnetic matching member and at least one second magnetic matching member are arranged on each rotating disc, a plurality of magnetic drive assemblies are arranged one by one between each group of adjacent two light emitting modules, the magnetic drive assembly has a first end and a second end, the first end can correspond to the first magnetic matching member or the second magnetic matching member on one side of the rotating disc, the second end can correspond to the second magnetic matching member or the first magnetic matching member on the other side of the rotating disc, the control module is connected with each magnetic drive assembly to generate different polarities of the first end and the second end of each magnetic drive assembly by providing driving current, and the control module can switch the polarities generated by the first end and the second end of each magnetic drive assembly by changing the direction of the driving current to make the rotating disc rotate.

7. A dimming on demand light source device according to claim 6, characterized in that: The magnetic drive assembly comprises a magnetic core and a coil winding wound on the magnetic core, the coil winding in each magnetic drive assembly is wound on the magnetic core in the same winding direction, the leading end of the magnetic core forms the first end, and the trailing end of the magnetic core forms the second end, a plurality of coil windings are connected in sequence to form a magnetic drive string circuit, and the control module is connected with both ends of the magnetic drive string circuit to output driving current and change the direction of the driving current.

8. A dimming on demand light source device according to claim 6, characterized in that: The first magnetic matching member and the second magnetic matching member in the same light emitting module are centrally symmetrically distributed around the rotating shaft of the rotating disc.

9. A dimming on demand light source device according to claim 1, characterized in that: A plurality of positive white light units are further arranged on the substrate, and the plurality of positive white light units are arranged at the outer periphery of all the light emitting modules.

10. A street light, characterized by A dimmable light source device as claimed in any one of claims 1-9.

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