CN214799964U - Light-emitting device and light-emitting system - Google Patents
Light-emitting device and light-emitting system Download PDFInfo
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- CN214799964U CN214799964U CN202120536823.1U CN202120536823U CN214799964U CN 214799964 U CN214799964 U CN 214799964U CN 202120536823 U CN202120536823 U CN 202120536823U CN 214799964 U CN214799964 U CN 214799964U
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Abstract
The utility model is suitable for the technical field of light sources, and provides a light-emitting device and a light-emitting system, wherein the light-emitting device comprises a driving circuit, at least one white light source and at least one color light source; the driving circuit is electrically connected with each white light source and each color light source respectively to adjust the luminous flux of each white light source and each color light source respectively, so that low color temperature can be realized under the condition of not reducing the luminous flux of the light-emitting device, and the color rendering index can be improved by adjusting the luminous flux of the color light sources.
Description
Technical Field
The utility model belongs to the technical field of the light source, especially, relate to a light emitting device and lighting system.
Background
With the continuous development of light source technology, various types of light emitting devices such as lighting sources, decorative light sources, advertisement light source boxes, alarm light sources and the like are developed, and great convenience is brought to daily production and life of people. In different applications, the color temperature of the light emitting device needs to be changed sometimes, most of the existing light emitting devices change the color temperature by adjusting the luminous flux, and to achieve a low color temperature, the luminous flux needs to be reduced usually, which easily causes the luminous flux to be too low.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiments of the present invention provide a light emitting device and a light emitting system to solve the problem that the low color temperature is usually required to reduce the luminous flux, which easily results in too low luminous flux.
A first aspect of an embodiment of the present invention provides a light emitting device, including a driving circuit, at least one white light source and at least one color light source;
the driving circuit is electrically connected with each white light source and each color light source respectively so as to adjust the luminous flux of each white light source and each color light source respectively.
In one embodiment, the at least one white light source comprises a first color temperature white light source, the at least one color light source comprises a red light source and a green light source;
alternatively, the at least one white light source comprises a first color temperature white light source and a second color temperature white light source, and the at least one color light source comprises a green light source;
alternatively, the at least one white light source comprises a second color temperature white light source and the at least one color light source comprises a blue light source;
wherein the second color temperature is greater than the first color temperature.
In one embodiment, the first color temperature ranges from 2200K to 4000K, and the second color temperature ranges from 4000K to 10000K.
In one embodiment, the light emitting device further comprises a substrate;
the color light source is arranged in the middle area of the substrate, and the white light source surrounds the color light source and is arranged in the peripheral area of the substrate.
In one embodiment, the at least one white light source comprises at least two first color temperature white light sources and at least two second color temperature white light sources;
all the first color temperature white light sources and all the second color temperature white light sources are uniformly distributed and are arranged in the peripheral area at intervals.
In one embodiment, the light-emitting device further comprises a light source circuit board, an electrical connection joint, a light mixing shell and a heat dissipation shell;
the white light source and the color light source are arranged on the light source circuit board, the light source circuit board is fixed on the substrate, the light source circuit board is electrically connected with the driving circuit through the electric connecting joint, the light mixing shell and the heat dissipation shell are connected in an opposite mode, a first cavity is formed between the substrate and the light mixing shell, a second cavity is formed between the substrate and the heat dissipation shell, the white light source, the color light source and the light source circuit board are arranged in the first cavity, and the driving circuit is arranged in the second cavity.
In one embodiment, the driving circuit comprises a human-computer interaction circuit and a control circuit;
the man-machine interaction circuit is electrically connected with the control circuit to receive a control signal sent by a user and trigger the control circuit to respectively adjust the luminous flux of each white light source and each color light source according to the control signal.
In one embodiment, the human-computer interaction circuit comprises a radio frequency receiving module;
the radio frequency receiving module is electrically connected with the control circuit to receive a wireless control signal sent by a user through wireless control equipment, and triggers the control circuit to respectively adjust the luminous flux of each white light source and each color light source according to the wireless control signal.
In one embodiment, the radio frequency receiving module includes at least one of a bluetooth module, a WiFi module, a ZigBee module, a mobile communication module, and a data transfer station module.
A second aspect of the embodiments of the present invention provides a lighting system, including a wireless control device and a lighting apparatus.
The embodiment of the present invention provides a light emitting device, which includes a driving circuit, at least one white light source and at least one color light source; the driving circuit is electrically connected with each white light source and each color light source respectively to adjust the luminous flux of each white light source and each color light source respectively, so that low color temperature can be realized under the condition of not reducing the luminous flux of the light-emitting device, and the color rendering index can be improved by adjusting the luminous flux of the color light sources.
The utility model discloses lighting system that the second aspect of embodiment provided, including wireless control equipment and illuminator, can realize the wireless control to illuminator, intelligent degree is high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of a first structure of a light emitting device according to an embodiment of the present invention;
fig. 2 is a schematic view of a second structure of a light emitting device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a third light-emitting device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a fourth structure of a light emitting device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a fifth light-emitting device according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a sixth structure of a light emitting device according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a first cross-sectional structure of a light emitting device according to an embodiment of the present invention;
fig. 8 is a schematic cross-sectional view of a light emitting device according to an embodiment of the present invention;
fig. 9 is a schematic longitudinal sectional structure view of a light emitting device according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a lighting system according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
It should also be understood that the term "and/or" as used in the specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
Furthermore, in the description of the present invention and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present invention. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
As shown in fig. 1, an embodiment of the present invention provides a light emitting device 100, which includes a driving circuit 10, at least one white light source 20, and at least one color light source 30;
the driving circuit 10 is electrically connected to each of the white light sources 20 and each of the color light sources 30, respectively, to adjust the luminous fluxes of each of the white light sources 20 and each of the color light sources 30, respectively.
In application, the light emitting device may be a lighting device, a decoration device, an advertising light box, an alarm device, or the like. When the light emitting device only includes the white light source, the low color temperature is to be realized, and the luminous flux of the white light source is generally required to be reduced, which easily causes the luminous flux of the light emitting device to be too low. When the luminous flux is 0, the light source is turned off; when the luminous flux is larger than 0, the light source is turned on.
In application, the light emitting device may comprise a white light source of at least one color temperature and at least one of three color light sources of a red light source, a green light source and a blue light source. The number of each light source can be set according to actual needs. Each light source may be implemented by a light-emitting diode (LED), wherein the white light source is implemented by a blue LED chip and yellow phosphor powder covering the blue LED chip, or by a blue LED chip and yellow phosphor powder and red phosphor powder covering the blue LED chip, or by a blue LED chip and red phosphor powder and green phosphor powder covering the blue LED chip, or by an ultraviolet LED chip and RGB phosphor powder (i.e., red phosphor powder, green phosphor powder and blue phosphor powder) covering the ultraviolet LED chip; the red light source is realized by a blue light chip and covering red fluorescent powder on the chip or directly by a red optical chip; the green light source is realized by a blue light chip and green fluorescent powder covered on the chip or directly by a green optical chip; the blue light source is realized through a blue light LED chip, or through a purple light LED chip and blue infrared fluorescent powder covering the purple light LED chip. The yellow fluorescent powder can be yttrium aluminum garnet fluorescent powder, silicate fluorescent powder and nitride fluorescent powder, the red fluorescent powder can be potassium fluosilicate (KSF) fluorescent powder and aluminate red fluorescent powder, the green fluorescent powder can be aluminate green fluorescent powder, and the blue fluorescent powder can be europium-doped blue fluorescent powder.
As shown in fig. 2, in one embodiment, the light emitting device 100 includes a first color temperature white light source 21, a red light source 31, and a green light source 32;
the driving circuit 10 is electrically connected to the first color temperature white light source 21, the red light source 31, and the green light source 32, respectively, to adjust the luminous flux of each light source, respectively.
In application, the excitation efficiency of the red phosphor used for manufacturing a low color temperature white light source is low, and to realize low color temperature, more red phosphors are generally needed, which easily results in low luminous flux of the light emitting device. In the embodiment corresponding to fig. 2, the first color temperature white light source is used in combination with the red light source and the green light source, and the red phosphor is not excessively used, so that the luminous flux of the light-emitting device at the low color temperature can be increased, and the color rendering index can be increased by adjusting the luminous flux of the red light source and the green light source.
In one embodiment, the first color temperature ranges from 2200K to 4000K.
In application, the first color temperature white light source is turned on, and the red light source and the green light source are turned off, so that the light-emitting device can emit white light with a first color temperature; the first color temperature white light source, the red light source and the green light source are started, so that the light-emitting device can emit white light with a color temperature smaller than the first color temperature; the first color temperature white light source is closed, and the red light source and/or the green light source are/is opened, so that the light-emitting device can emit red light, green light or polychromatic light formed by mixing the red light and the green light. Specifically, the first color temperature may be 2700K or 3000K; the 2700K white light source is matched with the red light source and the green light source, so that the light-emitting device can emit white light with the color temperature smaller than or equal to 2700K, for example, the color temperature is 2000K; by using a 3000K white light source in combination with a red light source and a green light source, the light emitting device can emit white light with a color temperature of less than or equal to 3000K, for example, 2200K.
As shown in fig. 3, in one embodiment, the light emitting device 100 includes a first color temperature white light source 21, a second color temperature white light source 22, and a green light source 32;
the driving circuit 10 is electrically connected with the first color temperature white light source 21, the second color temperature white light source 22 and the green light source 32 respectively to adjust the luminous flux of each light source respectively;
wherein the second color temperature is greater than the first color temperature.
In one embodiment, the second color temperature ranges from 4000K to 10000K.
In application, in the embodiment corresponding to fig. 3, the first color temperature white light source and the second color temperature white light source are adopted to match with the green light source, so that the luminous flux of the light-emitting device at a color temperature lower than the second color temperature can be increased, and meanwhile, the color coordinate can be adjusted to fall near the blackbody locus by adjusting the luminous flux of the green light source, so that the color rendering index is increased.
In application, the first color temperature white light source and/or the second color temperature white light source are turned on, and the green light source is turned off, so that the light-emitting device can emit white light with a first color temperature and/or white light with a second color temperature; the first color temperature white light source, the second color temperature white light source and the green light source are started, so that the light-emitting device can emit white light with a color temperature larger than the first color temperature and smaller than the second color temperature; the first color temperature white light source and the second color temperature white light source are closed, and the green light source is opened, so that the light-emitting device can emit green light. Specifically, the first color temperature may be 2700K or 3000K, and the second color temperature may be 7000K; the light-emitting device can emit white light with the color temperature between 2700K and 7000K by adopting a 2700K white light source and a 7000K white light source to match with a green light source; by adopting the 3000K white light source and the 7000K white light source to match with the green light source, the light-emitting device can emit white light with the color temperature of 3000K-7000K.
As shown in FIG. 4, in one embodiment, light-emitting device 100 includes a second color temperature white light source 22 and a blue light source 33;
the driving circuit 10 is electrically connected to the second color temperature white light source 22 and the blue light source 33, respectively, to adjust the luminous flux of each light source, respectively.
In application, in the embodiment corresponding to fig. 4, the color temperature of the light emitting device can be improved by using the second color temperature white light source in combination with the blue light source, and the color rendering index can be improved by adjusting the luminous flux of the blue light source.
In application, the second color temperature white light source is turned on, and the blue light source is turned off, so that the light-emitting device can emit white light with the second color temperature; the second color temperature white light source and the blue light source are started, so that the light-emitting device can emit white light with a color temperature larger than the second color temperature; the second color temperature white light source is turned off, and the blue light source is turned on, so that the light-emitting device can emit blue light. Specifically, the second color temperature may be 7000K; wherein, through adopting the 7000K white light source to mate the blue light source, can make light emitting device send out the white light that the colour temperature is greater than or equal to 7000K.
In application, the light emitting device may include a first color temperature white light source, a second color temperature white light source, a red light source and a green light source, so that the light emitting device may realize the functions in the embodiments corresponding to fig. 2 and 3;
alternatively, the light-emitting device may include a first color temperature white light source, a second color temperature white light source, and a blue light source, so that the light-emitting device may implement the functions in the embodiments corresponding to fig. 2 and 4;
alternatively, the light emitting device may include a second color temperature white light source, a green light source, and a blue light source, so that the light emitting device may realize the functions in the embodiments corresponding to fig. 3 and 4;
alternatively, the light emitting device may include a first color temperature white light source, a second color temperature white light source, a red light source, a green light source, and a blue light source, so that the light emitting device may implement the functions in the embodiments corresponding to fig. 2, 3, and 4, the first color temperature white light source and the second color temperature white light source are turned off, the red light source, the green light source, and the blue light source are turned on, and the light emitting device may emit a polychromatic light formed by mixing red light, green light, and blue light.
Fig. 5 exemplarily shows that the light emitting device 100 includes a first color temperature white light source 21, a second color temperature white light source 22, a red light source 31, a green light source 32, and a blue light source 33.
As shown in fig. 6, in one embodiment, the driving circuit 10 includes a human-machine interaction circuit 11 and a control circuit 12;
the human-computer interaction circuit 11 is electrically connected to the control circuit 12 to receive a control signal sent by a user and trigger the control circuit 12 to adjust the luminous flux of each white light source 20 and each color light source 30 according to the control signal.
In application, the human-computer interaction circuit can comprise a key and/or a wireless receiving module and the like; the key is connected with the control circuit and used for receiving a control signal input by a user through pressing operation and triggering the control circuit to respectively drive each white light source and each color light source to be turned on, turned off or changed in luminous flux according to the control signal; the wireless receiving module is electrically connected with the control circuit to receive a wireless control signal sent by a user through the wireless control equipment, and triggers the control circuit to respectively adjust the luminous flux of each white light source and each color light source according to the wireless control signal.
In application, the wireless receiving module may include a radio frequency receiving module and/or a photoelectric conversion module; the radio frequency receiving module can comprise at least one of a Bluetooth module, a WiFi module, a ZigBee module, a mobile communication module, a data transmission radio module and the like, and is used for converting radio frequency signals sent by a user through a mobile phone, a tablet computer, an intelligent bracelet, a personal digital assistant and other user terminals based on radio frequency technology into electric signals and triggering a control circuit to respectively drive each white light source and each color light source to be turned on, turned off or changed in luminous flux according to the electric signals; the photoelectric conversion module may include a photodiode or a phototransistor, and is configured to convert a white light signal sent by a user through a visible light control device based on an optical communication technology, an infrared control device (e.g., a remote controller), and the like into an electrical signal, and trigger the control circuit to adjust the luminous flux of each white light source and each color light source according to the electrical signal.
In application, the driving circuit further comprises a rectifying circuit, a filter circuit, a voltage stabilizing circuit and the like, wherein the rectifying circuit is used for accessing a power supply (for example, commercial power) and rectifying the power supply and then outputting the rectified power supply to the filter circuit; the filter circuit is connected with the rectifying circuit and is used for filtering the rectified power supply and then respectively outputting the filtered power supply to each light source in the white light sources, each light source in the color light sources, the voltage stabilizing circuit and the voltage reducing circuit; the voltage stabilizing circuit is connected with the filter circuit and used for stabilizing the voltage of the filtered external power supply and outputting the stabilized voltage to the control circuit to supply power to the control circuit.
As shown in fig. 7, in one embodiment, the light emitting device 100 further includes a substrate 101;
the color light source 30 is disposed in the middle region of the substrate 101, and the white light source 20 is disposed around the color light source 30 in the peripheral region of the substrate 101.
In application, the white light source and the color light source may be arranged in a ring shape, and the diameter of the white light source is larger than that of the color light source, so that the white light source and the color light source may be arranged around the same point on the substrate as a circle center, which may be a geometric center of the substrate. The shape of the substrate can be set according to actual needs, for example, the substrate can be a circle with a diameter larger than that of the white light source or a rectangle with a minimum side length larger than that of the white light source, and the white light source and the color light source can be set to be circular rings or rectangular rings.
FIG. 7 is a schematic diagram schematically illustrating a first cross-sectional structure of a light-emitting device; the substrate 101 is circular, and the white light source 20 and the color light source 30 are circular.
As shown in fig. 8, in one embodiment, the light-emitting device 100 includes at least two first color temperature white light sources 21 and at least two second color temperature white light sources 22;
all the first color temperature white light sources 21 and all the second color temperature white light sources 22 are uniformly distributed and arranged at intervals in the peripheral region.
In application, the number of the first color temperature white light sources and the second color temperature white light sources can be set to be any number larger than or equal to 2 according to actual needs.
FIG. 8 is a schematic diagram schematically illustrating a second cross-sectional structure of a light-emitting device; the light emitting device includes four first color temperature white light sources 21, four second color temperature white light sources 22, one red light source 31, one green light source 32, and one blue light source 33.
In use, the light source arrangement shown in fig. 7 or 8 enables the light emitting device to emit composite light with more uniform light mixing.
As shown in fig. 7, 8 or 9, in one embodiment, the light emitting device 100 further includes a light source circuit board 102, an electrical connection connector 103, a light mixing housing 104 and a heat dissipation housing 105;
the white light source 20 and the color light source 30 are disposed on the light source circuit board 102, the light source circuit board 102 is fixed on the substrate 101, the light source circuit board 102 is electrically connected to the driving circuit 10 through the electrical connector 103, the light mixing housing 104 and the heat dissipating housing 105 are connected in an opposite manner, a first cavity 106 is formed between the substrate 101 and the light mixing housing 104, a second cavity 107 is formed between the substrate 101 and the heat dissipating housing 105, the white light source 20, the color light source 30 and the light source circuit board 102 are disposed in the first cavity 106, and the driving circuit 10 is disposed in the second cavity 107.
In application, the white light source and the color light source are disposed on and electrically connected to a light source Circuit Board, which may be a Printed Circuit Board (PCB). The light source circuit board may be fixed to the substrate by a screw fastener, glue, or the like. One end of the electric connector is connected with the light source circuit board, and the other end of the electric connector penetrates through the through hole in the substrate and is electrically connected with the driving circuit. The light mixing shell is an optical structure which consists of optical elements such as a spectroscope, a light guide plate, a lens and the like and can uniformly mix light rays emitted by a light source and then emit the light rays. The heat dissipation shell is a heat dissipation structure composed of a good heat conductor, a ventilation hole structure and the like.
In the embodiment shown in fig. 7, 8 or 9, the light-emitting device can emit light with uniform light mixing and achieve good heat dissipation by arranging the light-mixing shell and the heat-dissipating shell, so as to improve the light-emitting effect and prolong the service life.
As shown in fig. 10, an embodiment of the present invention further provides a lighting system, which includes a lighting device 100 and a wireless control device 200.
In application, the wireless control device may be a mobile phone, a tablet computer, a smart band, a personal digital assistant, a remote controller, etc.
The above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A light-emitting device is characterized by comprising a driving circuit, at least one white light source and at least one color light source;
the driving circuit is electrically connected with each white light source and each color light source respectively so as to adjust the luminous flux of each white light source and each color light source respectively.
2. The lighting apparatus of claim 1, wherein said at least one white light source comprises a first color temperature white light source, and said at least one color light source comprises a red light source and a green light source;
alternatively, the at least one white light source comprises a first color temperature white light source and a second color temperature white light source, and the at least one color light source comprises a green light source;
alternatively, the at least one white light source comprises a second color temperature white light source and the at least one color light source comprises a blue light source;
wherein the second color temperature is greater than the first color temperature.
3. The lighting device of claim 2, wherein the first color temperature ranges from 2200K to 4000K, and the second color temperature ranges from 4000K to 10000K.
4. The light-emitting device according to any one of claims 1 to 3, further comprising a substrate;
the color light source is arranged in the middle area of the substrate, and the white light source surrounds the color light source and is arranged in the peripheral area of the substrate.
5. The lighting apparatus according to claim 4 wherein the at least one white light source comprises at least two first color temperature white light sources and at least two second color temperature white light sources;
all the first color temperature white light sources and all the second color temperature white light sources are uniformly distributed and are arranged in the peripheral area at intervals.
6. The lighting device according to claim 4, further comprising a light source circuit board, an electrical connection joint, a light mixing housing, and a heat dissipating housing;
the white light source and the color light source are arranged on the light source circuit board, the light source circuit board is fixed on the substrate, the light source circuit board is electrically connected with the driving circuit through the electric connecting joint, the light mixing shell and the heat dissipation shell are connected in an opposite mode, a first cavity is formed between the substrate and the light mixing shell, a second cavity is formed between the substrate and the heat dissipation shell, the white light source, the color light source and the light source circuit board are arranged in the first cavity, and the driving circuit is arranged in the second cavity.
7. The lighting device according to any one of claims 1 to 3, wherein the driving circuit includes a human-computer interaction circuit and a control circuit;
the man-machine interaction circuit is electrically connected with the control circuit to receive a control signal sent by a user and trigger the control circuit to respectively adjust the luminous flux of each white light source and each color light source according to the control signal.
8. The lighting apparatus of claim 7, wherein the human-computer interaction circuit comprises a radio frequency receiving module;
the radio frequency receiving module is electrically connected with the control circuit to receive a wireless control signal sent by a user through wireless control equipment, and triggers the control circuit to respectively adjust the luminous flux of each white light source and each color light source according to the wireless control signal.
9. The lighting apparatus of claim 8, wherein the radio frequency receiving module comprises at least one of a bluetooth module, a WiFi module, a ZigBee module, a mobile communication module, and a data transfer station module.
10. A lighting system comprising a wireless control device and a lighting apparatus as claimed in any one of claims 7 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120536823.1U CN214799964U (en) | 2021-03-15 | 2021-03-15 | Light-emitting device and light-emitting system |
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| CN202120536823.1U CN214799964U (en) | 2021-03-15 | 2021-03-15 | Light-emitting device and light-emitting system |
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| CN214799964U true CN214799964U (en) | 2021-11-19 |
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