CN216565660U - Light-emitting device and lamp - Google Patents

Abstract

The utility model discloses a light-emitting device, which controls the mixed correlated color temperature of the light-emitting device through the arrangement of at least one light emitter, at least one diode and at least two power distribution sets. The utility model mainly uses the hardware design of the diode and the jumper, effectively replaces the problems of unstable voltage and the like caused by using a resistor and a manual switch device by the diode in the traditional light-emitting device, achieves the requirement of miniaturization of the whole light-emitting device only by using the jumper with a PIN insertion mode, and really achieves the main advantages of stabilizing the voltage of the whole light-emitting device, further stabilizing the light-emitting efficiency of the whole light-emitting device, emitting required hue, color temperature and the like. The utility model also discloses a lamp using the light-emitting device.

Description

Light-emitting device and lamp

Technical Field

The present invention relates to a light emitting device and a lamp, and more particularly, to a light emitting device for controlling correlated color temperature of a light emitting diode through the arrangement of the light emitting diode, and a lamp prepared by the light emitting device.

Background

In recent years, due to the rapid development of Light-Emitting Diode (LED) related technologies, the LED lighting technology has been widely used in the fields of lighting and backlight sources, and because the life of the LED is longer than that of an incandescent bulb, the consumed electric energy is much less than that of the incandescent bulb, and moreover, the LED has the advantages of being Light, thin, short, and good in color saturation, and the like, the LED is the most developed Light source.

Taking white light generated by an LED as an example, the white light is formed by combining a plurality of lights with different wavelengths, and one method for representing the white light is to use Color Temperature (Color Temperature), which is the Color Temperature of black body metal radiation light, specifically, the Color Temperature is the spectral components contained in various light sources, and the specific method is as follows: the standard black body metal such as iron or tungsten is continuously heated, different temperatures can emit light with different colors in the heating process, the color of the light can be continuously changed when the temperature is gradually increased, the color light changing along with the temperature is the spectral component of the radiation light of the standard black body, the spectral component also changes along with the temperature, and therefore the color temperature is the color temperature of the radiation light. Simply, Color Temperature means the Color of light in white light, and Correlated Color Temperature (CCT) is the specification of the Color appearance of light emitted by a lighting device, the CCT rating of a lighting device usually refers to the warmth or coolness of the lighting device, the CCT rating can basically measure whether the Color of light emitted by the lighting device is cool white or warm white, when a lighting device with a CCT rating below 3200K is considered as a warm light source, or warm white (yellow-white to red), and a lighting device above 4000K is considered as a cold light source, or cool white (blue-white).

As the range of light emitting diodes used has become wider and wider, including homes, commercial buildings, hospitals or educational institutions, etc., it is desirable that LEDs have various CCT ratings, and that LEDs emit different color tones, and therefore, a luminaire having LEDs with easily changeable CCT ratings would be most advantageous. To achieve the above objective, a lamp having at least two LEDs, each having a different CCT, is developed to solve the above problem in U.S. Pat. No. US10091855B2 (document one), which combines a CCT switch element and a resistor in a circuit, and Manually switches the circuit to select a specific LED light source or LED combination, so that the lamp exhibits different CCTs.

In the circuit of the first document, resistors are used to mix the light emitted from two LEDs with different CCTs into a mixed CCT, however, the resistors usually have an error value of ± 1% to ± 5%, which causes unstable voltage during the power-on process and the luminous efficacy of the LEDs to be unstable, so the mixed CCT is also unstable. In addition, the CCT switch module of the first document needs to be shifted by hand, and the size of the hand must be considered, so that the CCT switch module cannot be miniaturized, which is not favorable for the development of miniaturization of products. Therefore, how to effectively avoid the problem that the conventional light emitting device is unstable in voltage and current due to the color temperature adjustment using a switching device or a resistor structure by means of an innovative hardware design is a problem that developers and related researchers in the related industries such as light emitting devices need to continuously strive to overcome and solve.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to provide a light emitting device which has a stable voltage when a hybrid CCT is achieved and can be miniaturized. The technical means adopted by the utility model are as follows: a light-emitting device is provided, which at least comprises: the first luminous body and the second luminous body can emit light with different correlated color temperatures or light with different wavelengths; the control circuit comprises a distributor, a first voltage stabilizing module and a second voltage stabilizing module; the distributor comprises at least two distribution groups, wherein each distribution group comprises two electrodes which are independently arranged; the at least two power distribution groups are respectively a first power distribution group and a second power distribution group, one end part of the first voltage stabilizing module is electrically connected with the first light emitter, and the other end part of the first voltage stabilizing module is electrically connected with the second power distribution group; one end of the second voltage stabilizing module is electrically connected with the second power distribution group, and the other end of the second voltage stabilizing module is electrically connected with the second luminous body; the first power distribution group is electrically connected with the first light emitter, and the first voltage stabilizing module and the second voltage stabilizing module are respectively provided with at least one diode.

In the light emitting device, the power output end of the first voltage stabilizing module is electrically connected to the first light emitter, and the power input end of the first voltage stabilizing module is electrically connected to the second power distribution unit; the power outlet end of the second voltage stabilizing module is electrically connected with the second luminous body, and the power inlet end of the second voltage stabilizing module is electrically connected with the second power distribution group.

The light-emitting device further comprises a power supply, wherein the power inlet end of the first voltage stabilizing module, the power inlet end of the second voltage stabilizing module and the second power distribution group are electrically connected and intersected at an intersection point; one of the electrodes of the first power distribution set and the second power distribution set is electrically connected with the power supply; the other electrode of the first power distribution group and the other electrode of the second power distribution group are respectively electrically connected with the first light emitter and the junction.

As mentioned above, the light emitting device further comprises a jumper provided with a connection line and end points at two ends of the connection line, and when two end points of the jumper are electrically contacted with two electrodes of the power distribution unit, the jumper transmits the electric energy provided by the power supply to the first light emitter and/or the second light emitter.

In the above-mentioned light emitting device, when the first power distribution set is electrically connected to the power supply through the jumper, the electric energy provided by the power supply is transmitted to the first light emitter.

In the light emitting device, when the second power distribution group is electrically connected to the power supply through the jumper, a supply current transmitted from the power supply starts to be shunted at the junction, wherein after a shunt current passes through the first voltage stabilizing module, a voltage drop is generated between the junction (i.e., the power input end of the first voltage stabilizing module) and the power output end of the first voltage stabilizing module, so that the first light emitter emits a first luminous flux; after the other shunt current passes through the second voltage stabilizing module, another voltage drop is generated between the junction point (i.e. the power input end of the second voltage stabilizing module) and the power output end of the second voltage stabilizing module, so that the second luminous body emits a second luminous flux.

In the above light emitting device, the control circuit further includes a third power distribution group, the third power distribution group also includes two independently disposed electrodes, one of the electrodes is electrically connected to the power supply, the other electrode is electrically connected to the second light emitting body, and when the third power distribution group is electrically connected to the power supply through the jumper, the electric energy provided by the power supply is transmitted to the second light emitting body or the power input end of the second voltage stabilizing module.

In the above light emitting device, the first light emitter and/or the second light emitter is a single light emitting diode or a light emitting diode group formed by a plurality of light emitting diodes connected in series, and the first light emitter and the second light emitter do not include a resistor.

In the light emitting device, the first voltage stabilizing module and/or the second voltage stabilizing module are respectively a diode or a series connection of a plurality of diodes.

The present invention further provides another embodiment of the light emitting device, which at least comprises: the first luminous body and the second luminous body can emit light with different correlated color temperatures or light with different wavelengths; the control circuit comprises a distributor and a first voltage stabilizing module; the distributor comprises at least two distribution groups, wherein each distribution group comprises two electrodes which are independently arranged; the at least two power distribution groups are respectively a first power distribution group and a second power distribution group, the first power distribution group is electrically connected with the first luminous body, the power inlet end of the first voltage stabilizing module is electrically connected with the first power distribution group at a first voltage drop generating point, and the power outlet end of the first voltage stabilizing module is electrically connected with the second luminous body; the second power distribution group is electrically connected with the second luminous body, and the first voltage stabilizing module is provided with at least one diode.

When the first power distribution group is electrically conducted from the jumper and the power supply, a supply current delivered by the power supply starts to be divided into a first branch and a second branch at the first voltage drop generation point, wherein the first branch directly supplies the first light emitter and enables the first light emitter to emit a first luminous flux; after the second shunt current passes through the first voltage stabilizing module, a voltage drop is generated between the first voltage drop generating point (namely the power input end of the first voltage stabilizing module) and the power output end of the first voltage stabilizing module, and the second luminous body emits a second luminous flux; the first luminous flux of the first light emitter and the second luminous flux of the second light emitter are mixed into a first mixed CCT.

In the above light emitting device, the control circuit further includes a second voltage stabilizing module, a power input end of the second voltage stabilizing module is electrically connected to the second power distribution unit at a second voltage drop generating point, a power output end of the second voltage stabilizing module is electrically connected to the first light emitting unit, the second power distribution unit is electrically connected to the second light emitting unit, and the second voltage stabilizing module is provided with at least one diode.

In the light emitting device, when the second power distribution group is electrically connected to the power supply through the jumper, the supply shunt transmitted from the power supply starts to be shunted into a third shunt and a fourth shunt at the second voltage drop generating point, wherein the third shunt is directly transmitted to the second light emitting body, so that the second light emitting body emits a third luminous flux; after the fourth shunt current passes through the second voltage stabilizing module, another voltage drop is generated between the second voltage drop generation point (namely the power input end of the second voltage stabilizing module) and the power output end of the second voltage stabilizing module, and the first light emitter emits a fourth luminous flux; the fourth luminous flux and the third luminous flux are mixed into a second mixed CCT; and, the first mixed CCT is different from the second mixed CCT.

Since CCT is related to luminous flux, the present invention further provides a light emitting device capable of adjusting luminous flux, the light emitting device at least comprising: a first light emitter; the control circuit comprises a distributor and a first voltage stabilizing module; the distributor comprises at least two distribution groups, wherein each distribution group comprises two electrodes which are independently arranged; the at least two power distribution groups are respectively a first power distribution group and a second power distribution group, one end part of the first voltage stabilizing module is electrically connected with the first light emitter, and the other end part of the first voltage stabilizing module is electrically connected with the second power distribution group; the first power distribution group is electrically connected with the first light emitter, and the first voltage stabilizing module is provided with at least one diode.

In the light emitting device, the power output end of the first voltage stabilizing module is electrically connected to the first light emitter, and the power input end of the first voltage stabilizing module is electrically connected to the second power distribution unit.

In order to achieve the above-mentioned objective, the present invention further provides a lamp, which at least includes the light emitting device as described above, and a cover body covering the light emitting device.

The utility model has the beneficial effects that: the utility model uses the diode to control the mixed CCT of the light-emitting device, effectively replaces the resistance of the traditional light-emitting device with the diode, stabilizes the voltage of the light-emitting device and further stabilizes the mixed CCT, thereby overcoming the problem of unstable mixed CCT of the traditional light-emitting device. Meanwhile, the miniaturization of the light emitting device is achieved by the Jumper (Jumper) only in the form of PIN (stitch) insertion. The aforementioned diode is different from the LED in definition, and the diode of the present invention is an electronic component having two electrodes with asymmetric conductance, which cannot emit light and has a rectifying or voltage-regulating function, so that it is different from the LED (light emitting diode).

Drawings

FIG. 1: the overall structure of a preferred embodiment of the lamp of the present invention is schematically illustrated in a perspective view (i).

FIG. 2: the overall structure of the preferred embodiment of the lamp of the utility model is shown in a perspective view (II).

FIG. 3: the light-emitting device of the present invention has a cross-sectional view of the overall structure of a preferred embodiment thereof.

FIG. 4: the jumper of a preferred embodiment of the light-emitting device of the utility model is schematically operated.

FIG. 5: the circuit connection diagram of a preferred embodiment of the light emitting device of the present invention is shown.

FIG. 6: the circuit connection diagram of two preferred embodiments of the light-emitting device of the utility model.

FIG. 7: the circuit connection diagram of the light-emitting device of the utility model in three preferred embodiments is shown.

FIG. 8: the utility model discloses a lamp with a three-dimensional structure.

Description of the figure numbers:

(1): light emitting device

(11): luminous body

(111): first light emitter

(112): second light emitter

(12): control circuit

(121): distributor

(1211): power distribution unit

(12111): electrode for electrochemical cell

(122): jumper connector

(1221): endpoint

(1222): connecting wire

(123): first voltage stabilizing module

(124): second voltage stabilizing module

(13): power supply

(14): circuit board

(2): lamp fitting

(21): cover body

(22): hollow plate

(221): fixing piece

(23): cover body

(P): junction point

(P1): first pressure drop generating point

(P2): second pressure drop generating point

(R1): first position

(R2): second position

(R3): a third position.

Detailed Description

First, please refer to fig. 1 and fig. 2, which are a schematic overall structure perspective view (a) and a schematic overall structure perspective view (b) of a preferred embodiment of the lamp of the present invention, wherein the lamp 2 of the present invention is formed by at least a light emitting device 1, a cover 21, a hollow plate 22, and a cover 23. The control circuit 12 and the plurality of fasteners 221 are also shown and will be described later.

Referring to fig. 3 to 5, the light emitting device 1 is composed of at least one light emitting body 11, a control circuit 12, a power supply 13 and a circuit board 14, for example, the light emitting device 1 in fig. 5 has two light emitting bodies 11, and as shown in fig. 3, the control circuit 12 and the power supply 13 are disposed on one end face of the circuit board 14, and the at least two light emitting bodies 11 are disposed on the other end face of the circuit board 14. The power supply 13 is, for example, an ac/dc converter, and the power supply 13 is electrically connected to an external power source (not shown), such as commercial power, for transmitting the electric energy of the external power source to the two light emitters 11 and the control circuit 12, wherein the circuit board 14 is one of a square, a rectangle, a circle, an ellipse, or an irregular shape, and in a preferred embodiment of the present invention, the circuit board 14 is a rectangle.

In addition, the two light emitters 11 disposed on one end surface of the circuit board 14 are a first light emitter 111 and a second light emitter 112 capable of emitting lights with different CCTs, for example: the first light emitter 111 is an LED emitting light with a first CCT (e.g., 5000K), and the second light emitter 112 is an LED emitting light with a second CCT (e.g., 3000K), which are different from each other. In other embodiments, each of the first light emitter 111 and the second light emitter 112 is a light emitting diode group formed by a plurality of LEDs connected in series, and does not include a resistor therein. The light emitting device 1 of a preferred embodiment of the present invention can mix light emitted from the first light emitter 111 having a CCT of 5000K and light emitted from the second light emitter 112 having a CCT of 3000K into a mixed CCT light, for example, the mixed CCT is 4000K. It should be noted, however, that the above-mentioned exemplary CCT values and amounts of the luminaries 11 and the mixed CCT values are for convenience of illustration and are not limited to the present invention, and those skilled in the art should understand that the CCT values and amounts of the luminaries 11 and the mixed CCT values can be changed without affecting the practical implementation of the present invention.

The control circuit 12 disposed on the other end surface of the circuit board 14 opposite to the first light emitter 111 and the second light emitter 112 is composed of at least a power distributor 121, a jumper 122, a first voltage stabilizing module 123 and a second voltage stabilizing module 124, wherein the power distributor 121 includes a plurality of power distribution groups 1211, such as three power distribution groups 1211. Each of the power distribution sets 1211 includes two independently disposed (non-electrically connected) electrodes (also referred to as PIN PINs) 12111, and the jumper 122 has a connection line 1222 and two terminals 1221 at two ends of the connection line 1222, respectively, when the jumper 122 is sleeved on one of the power distribution sets 1211, the two terminals 1221 electrically contact the two electrodes 12111 of the power distribution set 1211, respectively, since the two terminals 1221 are electrically connected to each other by the connection line 1222, the two electrodes 12111 are also electrically connected to each other, and when the power distribution set 1211 is powered on, the first light emitter 111 and/or the second light emitter 112 can emit light.

Referring to fig. 5, when the jumper 122 is gripped by tweezers and the jumper 122 is disposed at a first position R1, the power distribution group 1211 (also referred to as a first power distribution group) located at the top of the three power distribution groups 1211 is electrically connected to the power supply 13 through the jumper 122, and the power distribution group 1211 located at the top is directly electrically connected to the first light emitter 111, so that the electric energy provided by the power supply 13 can be directly transmitted to the first light emitter 111 through the power distribution group 1211, and the first light emitter 111 can emit light having a CCT of 5000K and a first original luminous flux. Similarly, when the jumper 122 is disposed at a third position R3, the power distribution group 1211 (also referred to as a third power distribution group) located at the bottom of the three power distribution groups 1211 is electrically connected to the power supply 13 through the jumper 122, and since the power distribution group 1211 located at the bottom is directly electrically connected to the second light emitter 112, the electric energy provided by the power supply 13 can be directly transmitted to the second light emitter 112 through the power distribution group 1211 located at the bottom, so that the second light emitter 112 emits light having a CCT of 3000K and a second original luminous flux. The first original luminous flux refers to the luminous flux of the light emitted by the first light emitter 111 at a specific voltage, and the second original luminous flux refers to the luminous flux of the light emitted by the second light emitter 112 at the specific voltage. When the jumper 122 is disposed at the first position R1 and the third position R3, respectively, the specific voltage received by the first light emitter 111 and the second light emitter 112 can be regarded as a supply voltage provided by the power supply 13. The two specific currents flowing through the first and second light emitters 111 and 112 are respectively related to the number of LEDs of the first and second light emitters 111 and 112, and the first and/or second light emitters 111 and 112 are a single LED or a light emitting diode group formed by a plurality of LEDs connected in series, and do not include a resistor therein. Since the supply voltage is determined, the two specific currents of the first light emitter 111 and the second light emitter 112 are determined, that is, when the supply voltage is stable, the two luminous fluxes of the first light emitter 111 and the second light emitter 112 are also stable.

Specifically, in another implementation (a variation of the embodiment in fig. 5), the power input end of the second voltage stabilizing module 124 is electrically connected to the third power distribution group (the lowest power distribution group 1211 of the three power distribution groups 1211) instead of the second power distribution group (the middle power distribution group 1211 of the three power distribution groups 1211), and the power output end of the second voltage stabilizing module 124 is electrically connected to the second light emitting device 112. When the jumper 122 is disposed at the third position R3, the power distribution group 1211 (also referred to as a third power distribution group) located at the bottom of the three power distribution groups 1211 is electrically connected to the power supply 13 through the jumper 122, and the electric energy provided by the power supply 13 can be transmitted to the power input end of the second voltage stabilizing module 124 and then transmitted to the second light emitting body 112 through the power output end of the second voltage stabilizing module 124. Since the supply voltage is reduced by the second voltage stabilizing module 124, compared to the case where no current passes through the second voltage stabilizing module 124, the current passing through the second voltage stabilizing module 124 and the second light emitting body 112 is relatively small, and at this time, the second light emitting body 112 can emit light with a CCT of 3000K and less than the second original luminous flux.

Continuing to fig. 5, one end of the first voltage stabilizing module 123 is electrically connected to the first light emitter 111, and the other end is electrically connected to the middle power distribution group 1211 (also referred to as a second power distribution group) of the three power distribution groups 1211 and the second voltage stabilizing module 124. The first voltage stabilizing module 123 is composed of a diode set, an output end of the diode is electrically connected to the first light emitter 111, and an input end of the diode is electrically connected to the middle of the power distribution set 1211 and the second voltage stabilizing module 124. It should be noted that the aforementioned diode is defined differently from an LED, and the diode in the present invention is an electronic component having two electrodes with asymmetric conductance, and is different from an LED (light emitting diode) because it cannot emit light and has a rectifying or voltage-regulating function.

One end of the second voltage stabilizing module 124 is electrically connected to the middle of the power distribution set 1211 and the first voltage stabilizing module 123, and the other end is electrically connected to the second light emitter 112. The second voltage stabilizing module 124 is composed of another diode set, the another diode set is composed of two diodes connected in series, the power outlet end of the diode connected in series is electrically connected to the second light emitting body 112, and the power inlet end of the diode connected in series is electrically connected to the power distribution set 1211 and the first voltage stabilizing module 123 located in the middle. Specifically, in other words, the first voltage regulation module 123 and/or the second voltage regulation module 124 can be a diode or a series of diodes.

When the jumper 122 is disposed at a second position R2, the middle power distribution group 1211 of the three power distribution groups 1211 is electrically connected to the power supply 13 through the jumper 122, and a supply voltage (i.e., the specific voltage) transmitted from the power supply 13 is at a junction point P where the power input end of the first voltage stabilizing module 123 intersects the power input end of the second voltage stabilizing module 124 and the second power distribution group is electrically connected. A supply current corresponding to the supply voltage is divided at the junction point P, wherein a voltage drop of a diode is generated after one of the divided currents passes through the diode of the first voltage stabilization module 123, the voltage after the voltage drop is transmitted to the first light emitter 111, and the divided current passing through the first light emitter 111 is smaller than the current when the divided current does not pass through the diode of the first voltage stabilization module 123, so that the first light emitter 111 emits light having a CCT of 5000K and smaller than the first original luminous flux. That is, a voltage drop is generated between the junction point P and the power outlet terminal of the first voltage stabilization module 123. For example, about 5% of the supply voltage, and the sharp drop in luminous flux is about one-half of the non-dropped luminous flux, which is called the first luminous flux and is smaller than the first original luminous flux. After the other shunt current passes through the second voltage stabilizing module 124, there is also a voltage drop, and the voltage after the voltage drop is transmitted to the second light emitting body 112 and the other shunt current passing through the second light emitting body 112 is less than the current when the voltage does not pass through the diode of the second voltage stabilizing module 124, so that the second light emitting body 112 emits light rays with CCT of 3000K and less than the second original luminous flux. That is, a voltage drop is generated between the junction point P and the power outlet terminal of the second voltage stabilization module 124. For example, about 5% of the supply voltage, and the sharp drop in luminous flux is about one-half of the non-dropped luminous flux, which is called the second luminous flux and is smaller than the second original luminous flux. Therefore, the first luminous flux and the second luminous flux are mixed into light with a CCT of 4000K (total luminous flux of the first luminous flux and the second luminous flux).

Of course, the present invention may not be provided with the third power distribution group, and the light emitting device 1 mixing light rays with CCT of 4000K may be similarly achieved.

In particular, the present invention replaces the resistor of the conventional light emitting device with the diode, so that the voltage of the light emitting device is stabilized (even if the current passing through the light emitting body is stabilized) and thus the mixed CCT is stabilized, thereby overcoming the problem of unstable mixed CCT of the conventional light emitting device. Meanwhile, the miniaturization of the light emitting device is achieved by the Jumper (Jumper) only in the form of PIN.

More specifically, the first light emitter 111 and the second light emitter 112 of the present invention may emit light with different wavelengths.

Referring to fig. 6, in a specific embodiment, the light emitting device 1 may have only one light emitting body, for example, the light emitting device 1 includes at least: the first light emitter 111; and, the control circuit 12 includes the power distributor 121, the first voltage stabilizing module 123; wherein, the power distributor 121 comprises at least two power distribution sets 1211, each power distribution set 1211 comprises two electrodes 12111 independently arranged; the at least two power distribution sets 1211 are the first power distribution set and the second power distribution set, respectively, one end (e.g., an output end of a diode) of the first voltage stabilizing module 123 is electrically connected to the first light emitter 111, and the other end (e.g., an input end of a diode) is electrically connected to the second power distribution set; in addition, the first voltage stabilizing module 123 is provided with at least one diode. The embodiment of fig. 6 may be used to select or adjust the luminous flux emitted by the first light emitter 111. For example, when the jumper 122 is gripped by tweezers and the jumper 122 is disposed at the first position R1, the power distribution group 1211 (also referred to as the first power distribution group) located at the top of the two power distribution groups 1211 is electrically connected to the power supply 13 through the jumper 122, and the power distribution group 1211 (the first power distribution group in this case) located at the top is directly electrically connected to the first light emitter 111, so that the power (the supply voltage) provided by the power supply 13 can be directly transmitted to the first light emitter 111 through the power distribution group 1211, and the first light emitter 111 can emit light, referred to as the first original luminous flux. When the jumper 122 is disposed at the second position R2, the power distribution set 1211 (in this case, the second power distribution set) located below is electrically conducted from the jumper 122 to the power supply 13, after the supply voltage transmitted from the power supply 13 passes through the diode of the first voltage stabilizing module 123, a voltage drop of a diode occurs, the voltage after the voltage drop is transmitted to the first light emitter 111, for example, the voltage drop is about 5% of the supply voltage, and at this time, a light flux drop is about half of the light flux when no voltage drop occurs, which is called the first light flux, and the first light flux is smaller than the first original light flux. Therefore, the first light emitter 111 can emit the first original luminous flux or the first luminous flux according to the jumper 122 disposed at the first position R1 or the second position R2.

Referring to fig. 7, in yet another specific embodiment, the light emitting device at least includes: a first light emitter 111 and a second light emitter 112, wherein the first light emitter 111 and the second light emitter 112 can emit light with different correlated color temperatures or light with different wavelengths; and a control circuit 12, which includes a power distributor 121, a first voltage-stabilizing module 123 and a second voltage-stabilizing module 124; wherein, the power distributor 121 includes at least two power distribution sets 1211, each power distribution set 1211 includes two electrodes 12111 independently disposed; the at least two power distribution sets 1211 are respectively a first power distribution set and a second power distribution set, one end portion (e.g., a power input end of a diode) of the first voltage stabilizing module 123 is electrically connected to the first power distribution set and the first light emitter 111 at a first voltage drop generating point P1, and the other end portion (e.g., a power output end of the diode) of the first voltage stabilizing module 123 is electrically connected to the second light emitter 112; one end (for example, the power input end of the diode) of the second voltage stabilizing module 124 is electrically connected to the second power distribution group and the second light emitter 112 at a second voltage drop generating point P2, and the other end (for example, the power output end of the diode) is electrically connected to the first light emitter 111; in addition, the first voltage stabilizing module 123 and the second voltage stabilizing module 124 are respectively provided with at least one diode. For example, when the jumper 122 is gripped by tweezers and the jumper 122 is disposed at the first position R1, the power distribution group 1211 (also referred to as the first power distribution group) located at the top of the two power distribution groups 1211 is electrically connected to the power supply 13 through the jumper 122, and a supply current corresponding to a supply voltage transmitted from the power supply 13 starts to be divided into a first branch and a second branch at the first voltage drop generation point P1, where the first branch is directly transmitted to the first illuminant 111, so that the first illuminant 111 emits light rays with a CCT of 5000K and smaller than the first original light flux, referred to as a first light flux, which is smaller than the first original light flux. After the second branch passes through the diode of the first voltage stabilizing module 123, there is a voltage drop of a diode (i.e., the voltage drop is generated between the first voltage drop generating point P1 and the power output end of the first voltage stabilizing module 123), and the voltage after the voltage drop is transmitted to the second light emitting body 112, so that the second light emitting body 112 emits light with a CCT of 3000K and less than the second original luminous flux, for example, the supply voltage with a voltage drop of about 5%, at this time, the luminous flux drop is about half of the non-voltage drop, which is called as a second luminous flux, and the second luminous flux is less than the second original luminous flux. Therefore, the first luminous flux of the first light emitter 111 and the second luminous flux of the second light emitter 112 are mixed into a light ray of a first mixed CCT (total luminous flux of the first luminous flux and the second luminous flux).

Also referring to fig. 7, for example, when the jumper 122 is gripped by tweezers and the jumper 122 is disposed at the second position R2, the power distribution group 1211 (also referred to as the second power distribution group) located below the two power distribution groups 1211 is electrically conducted from the jumper 122 to the power supply 13, and a supply current transmitted from the power supply 13 starts to be divided into a third branch and a fourth branch at the second voltage drop generation point P2, where the third branch is directly transmitted to the second light emitter 112, so that the second light emitter 112 emits light having a CCT of 3000K and less than the second original luminous flux, which is referred to as a third luminous flux, and the third luminous flux is less than the second original luminous flux. After the fourth branch passes through the diode of the second voltage stabilizing module 124, there is a voltage drop of a diode (i.e., the voltage drop is generated between the second voltage drop generating point P2 and the power output end of the second voltage stabilizing module 124), and the voltage after the voltage drop is transmitted to the first light emitter 111, so that the first light emitter 111 emits light rays with a CCT of 5000K and less than the first original luminous flux, for example, the supply voltage with a voltage drop of about 5%, at this time, the luminous flux drop is about half of the non-voltage drop, which is called as a fourth luminous flux, and the fourth luminous flux is less than the first original luminous flux. Therefore, the fourth luminous flux and the third luminous flux are mixed into a second mixed CCT light. The first mixed CCT and the second mixed CCT are different CCTs.

Referring to fig. 1 and fig. 2, the cover 21 covers the light emitting body 11 and the circuit board 14 to protect the light emitting body 11 from being damaged, and at least a portion of the cover 21 is made of a light-permeable material, so that the light emitted from the light emitting body 11 can pass through the cover 21; in addition, the shape of the cover 21 may depend on the shape of the circuit board 14, and in a preferred embodiment of the present invention, the shape of the circuit board 14 is rectangular, so that the shape of the cover 21 is a rectangular housing.

Furthermore, the hollow plate 22 is disposed around the cover 21, and the hollow plate 22 is fixed on a wall (not shown) by a plurality of fixing members 221, the wall can be, for example but not limited to, a ceiling, the hollow plate 22 can contact the ceiling and is fixed on a recess (not shown) of the ceiling by the fixing members 221, wherein the control circuit 12 is disposed in the recess of the ceiling, and the light emitting body 11 is disposed outside the ceiling relative to the control circuit 12, so as to make a space requiring light bright. In addition, the shape of the hollow plate 22 depends on the shape of the cover 21, and in a preferred embodiment of the present invention, the cover 21 is a rectangular housing, so that the shape of the hollow plate 22 is a rectangular shape. Fig. 8 is a schematic perspective view showing an overall structure of a lamp according to two preferred embodiments of the present invention, wherein the cover 21 is a cylinder, and the hollow plate 22 is a circle; it should be noted that the shapes of the circuit board 14, the cover 21 and the hollow board 22 are for convenience of illustration and are not limited to the present invention, and those skilled in the art will appreciate that the shapes of the circuit board 14, the cover 21 and the hollow board 22 are only the differences of the external appearance of the lamp 2 and will not affect the practical implementation of the present invention.

Claims (15)

1. A light-emitting device, comprising at least:

a first light emitter (111) and a second light emitter (112), the first light emitter (111) and the second light emitter (112) being capable of emitting light of different correlated color temperatures or light of different wavelengths; and the number of the first and second groups,

a control circuit (12) including a power distributor (121), a first voltage regulation module (123) and a second voltage regulation module (124); wherein, the distributor (121) comprises at least two distribution groups (1211), and each distribution group (1211) comprises two electrodes (12111) which are independently arranged; the at least two power distribution sets (1211) are respectively a first power distribution set and a second power distribution set, one end of the first voltage stabilizing module (123) is electrically connected to the first light emitter (111), and the other end of the first voltage stabilizing module is electrically connected to the second power distribution set; one end of the second voltage stabilizing module (124) is electrically connected with the second power distribution group, and the other end is electrically connected with the second luminous body (112);

the first power distribution group is electrically connected with the first light emitter (111), and the first voltage stabilizing module (123) and the second voltage stabilizing module (124) are respectively provided with at least one diode.

2. The lighting apparatus according to claim 1, wherein the power output terminal of the first voltage stabilizing module (123) is electrically connected to the first light emitter (111), and the power input terminal of the first voltage stabilizing module (123) is electrically connected to the second power distribution group; the power outlet end of the second voltage stabilizing module (124) is electrically connected with the second luminous body (112), and the power inlet end of the second voltage stabilizing module (124) is electrically connected with the second power distribution group.

3. The lighting apparatus according to claim 2, wherein the lighting apparatus (1) comprises a power supply (13), the power input terminal of the first voltage stabilizing module (123), the power input terminal of the second voltage stabilizing module (124) and the second power distribution unit are electrically connected and intersected at an intersection point (P); one of the electrodes (12111) of the first power distribution group and the second power distribution group is electrically connected with the power supply (13); the other electrode (12111) of the first and second power distribution sets is electrically connected to the first light emitter (111) and the junction (P), respectively.

4. The lighting device according to claim 3, wherein the lighting device (1) comprises a jumper (122), the jumper (122) is provided with a connection line (1222) and terminals (1221) respectively at two ends of the connection line (1222), and the jumper (122) transmits the power provided by the power supply (13) to the first light emitter (111) and/or the second light emitter (112) when the two terminals (1221) of the jumper (122) respectively electrically contact the two electrodes (12111) of the power distribution group (1211).

5. The lighting apparatus according to claim 4, wherein when the first power distribution set is electrically connected to the power supply (13) through the jumper (122), the power supplied by the power supply (13) is transmitted to the first light emitter (111).

6. The light-emitting device according to claim 5, wherein the control circuit (12) comprises a third power distribution group, the third power distribution group also comprises two independently disposed electrodes (12111), one of the electrodes (12111) is electrically connected to the power supply (13), the other electrode (12111) is electrically connected to the second light-emitting device (112), and when the third power distribution group is electrically connected to the power supply (13) through the jumper (122), the power provided by the power supply (13) is transmitted to the power input terminal of the second light-emitting device (112) or the second voltage stabilizing module (124).

7. The device of claim 6, wherein the first light emitter (111) and/or the second light emitter (112) is a single LED or a group of LEDs formed by a plurality of LEDs connected in series, and does not include any resistor.

8. The light-emitting device according to claim 7, wherein the first voltage regulation module (123) and/or the second voltage regulation module (124) are respectively a diode or a series connection of a plurality of diodes.

9. A light-emitting device, comprising at least:

a first light emitter (111) and a second light emitter (112), the first light emitter (111) and the second light emitter (112) being capable of emitting light of different correlated color temperatures or light of different wavelengths; and the number of the first and second groups,

a control circuit (12) including a power distributor (121) and a first voltage regulation module (123); wherein, the distributor (121) comprises at least two distribution groups (1211), and each distribution group (1211) comprises two electrodes (12111) which are independently arranged; the at least two power distribution sets (1211) are respectively a first power distribution set and a second power distribution set, the first power distribution set is electrically connected with the first light-emitting body (111), the power input end of the first voltage stabilizing module (123) is electrically connected with the first power distribution set at a first voltage drop generating point (P1), and the power output end of the first voltage stabilizing module (123) is electrically connected with the second light-emitting body (112);

the second power distribution group is electrically connected with the second light-emitting body (112), and the first voltage stabilizing module (123) is provided with at least one diode.

10. The light-emitting device according to claim 9, wherein the control circuit (12) comprises a second voltage-stabilizing module (124), a power-in end of the second voltage-stabilizing module (124) is electrically connected to the second power distribution set at a second voltage drop generation point (P2), a power-out end of the second voltage-stabilizing module (124) is electrically connected to the first light-emitting device (111), the second power distribution set is electrically connected to the second light-emitting device (112), and the second voltage-stabilizing module (124) is provided with at least one diode.

11. A light-emitting device, comprising at least:

a first light emitter (111); and the number of the first and second groups,

a control circuit (12) including a power distributor (121) and a first voltage regulation module (123); wherein, the distributor (121) comprises at least two distribution groups (1211), and each distribution group (1211) comprises two electrodes (12111) which are independently arranged; the at least two power distribution sets (1211) are respectively a first power distribution set and a second power distribution set, one end of the first voltage stabilizing module (123) is electrically connected to the first light emitter (111), and the other end of the first voltage stabilizing module is electrically connected to the second power distribution set;

the first power distribution group is electrically connected with the first light emitter (111), and the first voltage stabilizing module (123) is provided with at least one diode.

12. The lighting apparatus according to claim 11, wherein the power output terminal of the first voltage stabilizing module (123) is electrically connected to the first light emitter (111), and the power input terminal of the first voltage stabilizing module (123) is electrically connected to the second power distribution group.

13. A light fixture, comprising at least:

a light-emitting device (1) according to claim 1;

a cover body (21), wherein the cover body (21) covers the light-emitting device (1).

14. A light fixture, comprising at least:

a light-emitting device (1) according to claim 9;

a cover body (21), wherein the cover body (21) covers the light-emitting device (1).

15. A light fixture, comprising at least:

a light-emitting device (1) according to claim 11;

a cover body (21), wherein the cover body (21) covers the light-emitting device (1).

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