Lighting devices and lamps

Abstract

The present invention 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-emitting body, at least one diode and at least two power distribution groups. The present invention mainly uses the hardware design of diodes and jumpers to effectively replace the problems such as voltage instability caused by the use of resistors and manual switch devices in traditional light-emitting devices with diodes, and only uses jumpers in the form of PIN pins to achieve the needs of miniaturization of the overall light-emitting device, and indeed achieves the main advantages of stabilizing the voltage of the overall light-emitting device, thereby stabilizing the luminous efficiency of the overall light-emitting device, and emitting the required color-correlated color temperature. The present invention also discloses a lamp using the above-mentioned light-emitting device.

Description

Technical Field

[0001] The present invention relates to a light emitting device and a lamp, and more particularly to a light emitting device that controls the correlated color temperature of light emitting diodes through the arrangement of diodes, and a lamp prepared by the light emitting device. Background Art

[0002] In recent years, due to the rapid development of light-emitting diode (LED) related technologies, its light-emitting technology has been widely used in the fields of lighting and backlight. Moreover, since the life of LED is longer than that of incandescent bulbs, the power consumed is much less than that of incandescent bulbs. Furthermore, LED also has the advantages of being light, thin, short and small with good color saturation, it has now become the most promising light source.

[0003] Taking the white light generated by LED as an example, white light is composed of multiple lights with different wavelengths. One way to characterize white light is to use color temperature. The so-called color temperature refers to the color temperature of the light radiated by a black body metal. Specifically, color temperature is the spectral component contained in various light sources. The specific method is: use a standard black body metal, such as iron or tungsten, and continuously heat this standard black body metal. During the heating process, different temperatures will emit different colors of light. When the temperature gradually increases, the color of the light will continue to change. This color light that changes with temperature is the spectral component of the standard black body radiation light. The spectral component also changes with temperature, so color temperature is the color temperature of the radiated light. Simply put, color temperature means the color of light within white light, and the correlated color temperature (CCT) refers to the specification of the color appearance of light emitted by a light-emitting device. The CCT rating of a light-emitting device usually refers to the warmth or coolness of the light-emitting device. The CCT rating can basically measure whether the color of the light emitted by the light-emitting device is cool white or warm white. When the CCT rating is lower than 3200K, the light-emitting device is considered to be a warm light source, or warm white (yellow-white to red), while the light-emitting device above 4000K is considered to be a cold light source, or cool white (bluish-white).

[0004] As the use of light-emitting diodes becomes more and more widespread, including residences, commercial buildings, hospitals or educational institutions, people expect LEDs to have various CCT ratings and hope that LEDs can emit different tones. Therefore, lamps with LEDs that can easily change CCT ratings are most advantageous. In order to achieve the above purpose, the "Manually controllable LED correlated color temperature light fixture" of US Patent No. US10091855B2 (Document 1) was developed to solve the above problem. This patent mainly has a lamp with at least two LEDs, each LED has a different CCT, combined with a CCT switch component and a resistor in the circuit, and manually switches the circuit to select a specific LED light source or LED combination, so that the lamp presents different CCT.

[0005] The circuit of Document 1 uses resistors to mix the light of two LEDs with different CCTs into a mixed CCT. However, resistors usually have an error value of ±1% to ±5%, which causes voltage instability during the power-on process and makes the LED's luminous efficiency unstable, so the mixed CCT will also be unstable. In addition, because the CCT switch component of Document 1 needs to be turned by hand, the size of the hand must be considered, so it cannot be miniaturized and is not conducive to the progress of product miniaturization. Therefore, how to effectively avoid the problems of traditional light-emitting devices using switch devices or resistor structures to adjust the color temperature, which easily lead to unstable voltage and current of the light-emitting device, through innovative hardware design, is a problem that developers and researchers in related industries such as light-emitting devices need to continue to work hard to overcome and solve. Summary of the invention

[0006] The main purpose of the present invention is to provide a light-emitting device that has a stable voltage when achieving a mixed CCT and can be miniaturized. The present invention uses a diode to control the mixed CCT of the light-emitting device, effectively replacing the resistor of the traditional light-emitting device with a diode, so that the voltage of the light-emitting device is stable and the mixed CCT is stable, thereby overcoming the problem of unstable mixed CCT of the traditional light-emitting device. At the same time, the miniaturization of the light-emitting device is achieved by only inserting a jumper in the form of a PIN pin. The aforementioned diode is different from the definition of LED. The diode referred to in the present invention is an electronic component with two electrodes with asymmetric conductivity, which cannot emit light and has a rectification or voltage regulation function, so it is different from an LED (light-emitting diode).

[0007] In order to achieve the above-mentioned implementation objectives, a light-emitting device is proposed, which at least includes: a first light-emitting body and a second light-emitting body, the first light-emitting body and the second light-emitting body can emit light of different correlated color temperatures or light of different wavelengths; and a control circuit, including a distributor, a first voltage stabilizing module and a second voltage stabilizing module; wherein the distributor includes at least two distribution groups, each of which includes two independently arranged electrodes; the aforementioned at least two distribution groups are respectively a first distribution group and a second distribution group, one end of the first voltage stabilizing module is electrically connected to the first light-emitting body, and the other end is electrically connected to the second distribution group; and one end of the second voltage stabilizing module is electrically connected to the second distribution group, and the other end is electrically connected to the second light-emitting body; wherein the first distribution group is electrically connected to the first light-emitting body, and the first voltage stabilizing module and the second voltage stabilizing module are respectively provided with at least one diode.

[0008] As described above, in the light-emitting device, the power output end of the first voltage stabilizing module is electrically connected to the first light-emitting body, and the power input end of the first voltage stabilizing module is electrically connected to the second power distribution group; the power output end of the second voltage stabilizing module is electrically connected to the second light-emitting body, and the power input end of the second voltage stabilizing module is electrically connected to the second power distribution group.

[0009] The light-emitting device as described above further includes a power supply, and the power input end of the first voltage stabilizing module, the power input end of the second voltage stabilizing module and the second power distribution group are electrically connected and intersect at an intersection; one of the electrodes of the first power distribution group and the second power distribution group is electrically connected to the power supply; and the other electrode of the first power distribution group and the second power distribution group is electrically connected to the first light-emitting body and the intersection respectively.

[0010] The light-emitting device as described above further includes a jumper, which is provided with a connecting line and endpoints at both ends of the connecting line. When the two endpoints of the jumper respectively correspond to and electrically contact the two electrodes of the power distribution group, the jumper transmits the electrical energy provided by the power supply to the first light-emitting body and / or the second light-emitting body.

[0011] In the lighting device as described above, when the first 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 first light-emitting body.

[0012] In the light-emitting device as described above, when the second power distribution group is electrically connected to the power supply by the jumper, a supply current transmitted by the power supply will begin to be split at the junction, and one of the split currents will generate a voltage drop 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 after passing through the first voltage stabilizing module, so that the first light-emitting body emits a first luminous flux; and the other split current will generate another voltage drop between the junction (i.e., the power input end of the second voltage stabilizing module) and the power output end of the second voltage stabilizing module after passing through the second voltage stabilizing module, so that the second light-emitting body emits a second luminous flux.

[0013] As described above, the light-emitting device, the control circuit further includes a third power distribution group, the third power distribution group also includes two independently arranged electrodes, one of which is electrically connected to the power supply, and the other is electrically connected to the second light-emitting body. 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 terminal of the second voltage stabilizing module.

[0014] In the light-emitting device as described above, the first light-emitting body and / or the second light-emitting body 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-emitting body and the second light-emitting body do not include a resistor.

[0015] In the above-mentioned light emitting device, the first voltage stabilizing module and / or the second voltage stabilizing module is respectively a diode or a plurality of diodes connected in series.

[0016] The present invention further provides another embodiment of the light-emitting device, which at least includes: a first light-emitting body and a second light-emitting body, the first light-emitting body and the second light-emitting body can emit light of different correlated color temperatures or light of different wavelengths; and a control circuit includes a power distributor and a first voltage stabilizing module; wherein the power distributor includes at least two power distribution groups, each of which includes two independently arranged electrodes; the aforementioned 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 to the first light-emitting body, the power input end of the first voltage stabilizing module is electrically connected to the first power distribution group at a first voltage drop generating point, and the power output end of the first voltage stabilizing module is electrically connected to the second light-emitting body; wherein the second power distribution group is electrically connected to the second light-emitting body, and the first voltage stabilizing module is provided with at least one diode.

[0017] The light-emitting device as described above further comprises a jumper and a power supply. When the first power distribution group is electrically connected to the power supply by the jumper, a supply current delivered by the power supply will be divided into a first branch current and a second branch current at the first voltage drop generating point, wherein the first branch current is directly supplied to the first light-emitting body and causes the first light-emitting body to emit a first luminous flux; and after the second branch current passes through the first voltage stabilizing module, a voltage drop is generated between the first voltage drop generating point (i.e., the power input end of the first voltage stabilizing module) and the power output end of the first voltage stabilizing module, and causes the second light-emitting body to emit a second luminous flux; the first luminous flux of the first light-emitting body and the second luminous flux of the second light-emitting body are mixed to form a first mixed CCT.

[0018] As described above, the light-emitting device, the control circuit further includes a second voltage stabilizing module, the power input end of the second voltage stabilizing module is electrically connected to the second power distribution group at a second voltage drop generating point, and the power output end of the second voltage stabilizing module is electrically connected to the first light-emitting body, the second power distribution group is electrically connected to the second light-emitting body, and the second voltage stabilizing module is provided with at least another diode.

[0019] In the light-emitting device as described above, when the second power distribution group is electrically connected to the power supply by the jumper, the supply split current transmitted by the power supply will be split into a third split current and a fourth split current at the second voltage drop generating point, wherein the third split current is directly transmitted to the second light-emitting body, so that the second light-emitting body emits a third luminous flux; and after the fourth split current passes through the second voltage-stabilizing module, another voltage drop is generated between the second voltage drop generating point (i.e., 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-emitting body emits a fourth luminous flux; the fourth luminous flux is mixed with the third luminous flux to form a second mixed CCT; and the first mixed CCT is different from the second mixed CCT.

[0020] 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-emitting body; and a control circuit comprising a power distributor and a first voltage stabilizing module; wherein the power distributor comprises at least two power distribution groups, each of which comprises two independently arranged electrodes; the aforementioned at least two power distribution groups are respectively a first power distribution group and a second power distribution group, one end of the first voltage stabilizing module is electrically connected to the first light-emitting body, and the other end is electrically connected to the second power distribution group; wherein the first power distribution group is electrically connected to the first light-emitting body, and the first voltage stabilizing module is provided with at least one diode.

[0021] In the light-emitting device as described above, the power output end of the first voltage-stabilizing module is electrically connected to the first light-emitting body, and the power input end of the first voltage-stabilizing module is electrically connected to the second power distribution group.

[0022] In order to achieve the above-mentioned implementation objectives, the inventor further proposes a lamp, which at least includes a light-emitting device as described above and a cover body, wherein the cover body covers the light-emitting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 : A three-dimensional schematic diagram of the overall structure of a preferred embodiment of the lamp of the present invention (I).

[0024] Figure 2 : A three-dimensional schematic diagram of the overall structure of a preferred embodiment of the lamp of the present invention (II).

[0025] Figure 3 : A cross-sectional view of the overall structure of a preferred embodiment of the light-emitting device of the present invention.

[0026] Figure 4 : Schematic diagram of the operation of a jumper of a preferred embodiment of the light-emitting device of the present invention.

[0027] Figure 5 : A schematic diagram of circuit connections of a preferred embodiment of the light emitting device of the present invention.

[0028] Figure 6 : A schematic diagram of circuit connections of a second preferred embodiment of the light emitting device of the present invention.

[0029] Figure 7 : A schematic diagram of circuit connections of the third preferred embodiment of the light emitting device of the present invention.

[0030] Figure 8 : A three-dimensional schematic diagram of the overall structure of a second preferred embodiment of the lamp of the present invention.

[0031] Description of the figure number:

[0032] (1) Light-emitting device

[0033] (11): Luminous body

[0034] (111): First light emitter

[0035] (112): Second light emitter

[0036] (12): Control circuit

[0037] (121): Distributor

[0038] (1211): Power distribution group

[0039] (12111): Electrode

[0040] (122): Jumper

[0041] (1221): Endpoint

[0042] (1222): Connection line

[0043] (123): First voltage regulator module

[0044] (124): Second voltage regulator module

[0045] (13) Power supply

[0046] (14) Circuit board

[0047] (2) Lamps

[0048] (21): Cover body

[0049] (22): Hollow plate

[0050] (221): Fixing parts

[0051] (23):cover

[0052] (P): Junction point

[0053] (P1): The first voltage drop point

[0054] (P2): The second voltage drop point

[0055] (R1): First position

[0056] (R2): Second position

[0057] (R3): Third position. DETAILED DESCRIPTION

[0058] First, see Figure 1 and Figure 2 1 and 2 are the overall structural perspective diagram (I) and the overall structural perspective diagram (II) of a preferred embodiment of the lamp of the present invention, wherein the lamp 2 of the present invention is composed of at least a light emitting device 1, a cover 21, a hollow plate 22, and a cover 23. The control circuit 12 and a plurality of fixing members 221 are also indicated in the figure, which will be described later.

[0059] Please also read Figures 3 to 5 As shown, 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. Figure 5 The light emitting device 1 has two light emitting bodies 11. Figure 3The control circuit 12 and the power supply 13 are disposed on one end surface of the circuit board 14, and the at least two light-emitting bodies 11 are disposed on the other end surface 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 in the diagram), the external power source is, for example, a commercial power source, so as to transfer the electric energy of the external power source to the two light-emitting bodies 11 and the control circuit 12, wherein the circuit board 14 is in a square, rectangular, circular, oval or irregular shape, etc. In a preferred embodiment of the present invention, the circuit board 14 is in a rectangular shape.

[0060] 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 that can emit light of different CCTs, for example, the first light emitter 111 is an LED that emits light of a first CCT (for example, 5000K), and the second light emitter 112 is an LED that emits light of a second CCT (for example, 3000K), and the first CCT is different from the second CCT. 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 the light emitted by the first light emitter 111 with a CCT of 5000K and the light emitted by the second light emitter 112 with a CCT of 3000K into a mixed CCT light, for example, the mixed CCT is 4000K. However, it must be noted that the CCT value and quantity of the light-emitting body 11 and the mixed CCT value are for the convenience of explanation and are not limited to the present invention. A person skilled in the art will know that the CCT value and quantity of the light-emitting body 11 and the mixed CCT value can be changed without affecting the actual implementation of the present invention.

[0061] The control circuit 12 disposed on the other end surface of the circuit board 14 relative to the first light-emitting body 111 and the second light-emitting body 112 is composed of at least a distributor 121, a jumper 122, a first voltage stabilizing module 123 and a second voltage stabilizing module 124, wherein the distributor 121 includes a plurality of distribution groups 1211, for example, three distribution groups 1211. Each of the power distribution groups 1211 includes two independently arranged (non-electrically connected) electrodes (also called PIN pins) 12111, and the jumper 122 is provided with a connecting line 1222 and endpoints 1221 at both ends of the connecting line 1222. When the jumper 122 is mounted on one of the power distribution groups 1211, the two endpoints 1221 respectively correspond to the two electrodes 12111 of the power distribution group 1211 that are electrically contacted. Since the two endpoints 1221 are electrically connected to each other through the connecting line 1222, the two electrodes 12111 are also electrically connected to each other. When the power distribution group 1211 is energized, the first light-emitting body 111 and / or the second light-emitting body 112 can emit light.

[0062] See also Figure 5When the jumper 122 is clamped with tweezers and set at a first position R1, the top power distribution group 1211 of the three power distribution groups 1211, which can also be called the first power distribution group, is electrically connected to the power supply 13 through the jumper 122. Since the top power distribution group 1211 is directly electrically connected to the first light-emitting body 111, the electric energy provided by the power supply 13 can be directly transmitted to the first light-emitting body 111 through the power distribution group 1211, so that the first light-emitting body 111 can emit light with a CCT of 5000K and a first original luminous flux. Similarly, when the jumper 122 is set to a third position R3, the power distribution group 1211 (also referred to as the 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. Since the power distribution group 1211 located at the bottom is directly electrically connected to the second light-emitting body 112, the electric energy provided by the power supply 13 can be directly transmitted to the second light-emitting body 112 through the power distribution group 1211 located at the bottom, so that the second light-emitting body 112 can emit light with a CCT of 3000K and a second original luminous flux. The aforementioned first original luminous flux refers to the luminous flux of the light emitted by the first light-emitting body 111 at a specific voltage, and the second original luminous flux refers to the luminous flux of the light emitted by the second light-emitting body 112 at the specific voltage. When the jumper 122 is respectively set at the first position R1 and the third position R3, the specific voltage received by the first light-emitting body 111 and the second light-emitting body 112 can be regarded as a supply voltage provided by the power supply 13. The two specific currents flowing through the first light-emitting body 111 and the second light-emitting body 112 are respectively related to the number of LEDs respectively provided by the first light-emitting body 111 and the second light-emitting body 112. The first light-emitting body 111 and / or the second light-emitting body 112 is a single LED or a light-emitting diode group formed by a plurality of LEDs connected in series, and does not include a resistor. Since the supply voltage has been determined, the two specific currents of the first light-emitting body 111 and the second light-emitting body 112 will be determined, that is, when the supply voltage is stable, the two luminous fluxes of the first light-emitting body 111 and the second light-emitting body 112 will also be stable.

[0063] It is particularly noted that in another embodiment ( Figure 5In a variation of the embodiment, the power input end of the second voltage stabilizing module 124 is electrically connected to the third power distribution group (the power distribution group 1211 located at the bottom of the three power distribution groups 1211, rather than being electrically connected to the power distribution group 1211 located in the middle of the three power distribution groups 1211 of the second power distribution group), and the power output end of the second voltage stabilizing module 124 is electrically connected to the second light-emitting body 112. When the jumper 122 is set at the third position R3, the power distribution group 1211 located at the bottom of the three power distribution groups 1211 (also referred to as the third power distribution group) is electrically connected to the power supply 13 through the jumper 122, and the power provided by the power supply 13 can also be transmitted to the power input end of the second voltage stabilizing module 124, and then transmitted to the second light-emitting body 112 by the power output end of the second voltage stabilizing module 124. Since the supply voltage is stepped down by the second voltage stabilizing module 124, the current passing through the second voltage stabilizing module 124 and the second light-emitting body 112 will be smaller than the case where no current passes through the second voltage stabilizing module 124. 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.

[0064] Continue back Figure 5 , one end of the first voltage stabilizing module 123 is electrically connected to the first light-emitting body 111, and the other end is electrically connected to the middle power distribution group 1211 (also referred to as the second power distribution group) among the three power distribution groups 1211 and the second voltage stabilizing module 124. The first voltage stabilizing module 123 is composed of a diode group, the output end of the diode is electrically connected to the first light-emitting body 111, and the input end of the diode is electrically connected to the middle power distribution group 1211 and the second voltage stabilizing module 124. It is particularly noted that the aforementioned diode is different from the definition of LED. The diode referred to in the present invention is an electronic component with two electrodes with asymmetric conductivity, which cannot emit light and has a rectifying or voltage regulating function, so it is different from an LED (light emitting diode).

[0065] One end of the second voltage stabilizing module 124 is electrically connected to the power distribution group 1211 and the first voltage stabilizing module 123 located in the middle, and the other end is electrically connected to the second light-emitting body 112. The second voltage stabilizing module 124 is composed of another diode group, and the other diode group is composed of two diodes connected in series, and the output end of the diodes connected in series is electrically connected to the second light-emitting body 112, and the input end of the diodes connected in series is electrically connected to the power distribution group 1211 and the first voltage stabilizing module 123 located in the middle. It is particularly noted that in other words, the first voltage stabilizing module 123 and / or the second voltage stabilizing module 124 can be a diode or a plurality of diodes connected in series.

[0066] When the jumper 122 is set at a second position R2, the middle power distribution group 1211 among the three power distribution groups 1211 is electrically connected to the power supply 13 by the jumper 122, and a supply voltage (i.e., the aforementioned specific voltage) transmitted by the power supply 13 will be electrically connected at an intersection point P where the power input end of the first voltage stabilizing module 123 and the power input end of the second voltage stabilizing module 124 and the second power distribution group are electrically connected and intersect. A supply current corresponding to the supply voltage starts to be split at the intersection point P, and a split current has a voltage drop of a diode after passing through the diode of the first voltage stabilizing module 123. The voltage after the voltage drop is transmitted to the first light-emitting body 111, and the split current passing through the first light-emitting body 111 is smaller than the current when it does not pass through the diode of the first voltage stabilizing module 123, so that the first light-emitting body 111 emits light with a CCT of 5000K and less than the first original luminous flux. That is to say, a voltage drop occurs between the intersection point P and the output terminal of the first voltage stabilizing module 123. For example, when the voltage drop is about 5% of the supply voltage, the luminous flux drops sharply to about half of the voltage drop before the voltage drop, which is called the first luminous flux, and the first luminous flux is less than the first original luminous flux. After the other shunt passes through the second voltage stabilizing module 124, there is also a voltage drop. The voltage after the voltage drop is transmitted to the second light-emitting body 112 and the other shunt passing through the second light-emitting body 112 is less than the current when the diode does not pass through the second voltage stabilizing module 124, so that the second light-emitting body 112 emits light with a CCT of 3000K and less than the second original luminous flux. That is to say, a voltage drop occurs between the intersection point P and the output terminal of the second voltage stabilizing module 124. For example, when the voltage drop is about 5% of the supply voltage, the luminous flux drops sharply to about half of the voltage drop before the voltage drop, which is called the second luminous flux, and the second luminous flux is less than the second original luminous flux. Therefore, the first luminous flux and the second luminous flux are mixed into a light beam with a CCT of 4000K (the total luminous flux of the first luminous flux and the second luminous flux).

[0067] Of course, the third power distribution group may not be provided in the present invention, and the light emitting device 1 with a mixed CCT of 4000K can also be achieved.

[0068] It is particularly noted that the present invention replaces the resistor of the traditional light-emitting device with a diode, so that the voltage of the light-emitting device is stable (that is, the current passing through the light-emitting body is stable) and the mixed CCT is stable, thus overcoming the problem of the instability of the mixed CCT of the traditional light-emitting device. At the same time, the miniaturization of the light-emitting device is achieved by only using a jumper in the form of a PIN pin.

[0069] It is particularly noted that the first light emitting body 111 and the second light emitting body 112 of the present invention may also emit light of different wavelengths respectively.

[0070] See also Figure 6In a particular embodiment, the light-emitting device 1 may have only one light-emitting body, for example, the light-emitting device 1 at least includes: the first light-emitting body 111; and the control circuit 12 includes the power distributor 121 and the first voltage stabilizing module 123; wherein the power distributor 121 includes at least two power distribution groups 1211, each of which includes two independently arranged electrodes 12111; the aforementioned at least two power distribution groups 1211 are respectively the first power distribution group and the second power distribution group, one end of the first voltage stabilizing module 123 (for example, the power output end of a diode) is electrically connected to the first light-emitting body 111, and the other end, for example, the power input end of a diode is electrically connected to the second power distribution group; and the first voltage stabilizing module 123 is provided with at least one diode. Figure 6 The embodiment can be used to select or adjust the luminous flux emitted by the first light-emitting body 111. For example, when the jumper 122 is clamped with tweezers and the jumper 122 is set at the first position R1, the uppermost power distribution group 1211 of the two power distribution groups 1211 can also be called the first power distribution group. The jumper 122 is electrically connected to the power supply 13. Since the uppermost power distribution group 1211 is the first power distribution group at this time, it is directly electrically connected to the first light-emitting body 111. Therefore, the power supply voltage provided by the power supply 13 can be directly transmitted to the first light-emitting body 111 through the power distribution group 1211, so that the first light-emitting body 111 can emit light, which is called the first original luminous flux. When the jumper 122 is set at the second position R2, the power distribution group 1211 (the second power distribution group at this time) located below is electrically connected to the power supply 13 by the jumper 122. The supply voltage transmitted from the power supply 13 has a diode voltage drop after passing through the diode of the first voltage stabilizing module 123. The voltage after the voltage drop is transmitted to the first light-emitting body 111. For example, the voltage drop is about 5% of the supply voltage. At this time, the luminous flux drops sharply to about half of the voltage drop, which is called the first luminous flux. The first luminous flux is smaller than the first original luminous flux. Therefore, according to the jumper 122 being set at the first position R1 or the second position R2, the first light-emitting body 111 can emit the first original luminous flux or the first luminous flux.

[0071] See also Figure 7In another particular embodiment, the light emitting device at least comprises: a first light emitting body 111 and a second light emitting body 112, wherein the first light emitting body 111 and the second light emitting body 112 are capable of emitting light of different correlated color temperatures or light of different wavelengths; and a control circuit 12, comprising a power distributor 121, a first voltage stabilizing module 123 and a second voltage stabilizing module 124; wherein the power distributor 121 comprises at least two power distribution groups 1211, each of which comprises two independently arranged electrodes 12111; the aforementioned at least two power distribution groups 1211 are respectively a first power distribution group and a second power distribution group, the first voltage stabilizing module One end of 123 (for example, the power input end of the diode) is electrically connected to the first power distribution group and the first light-emitting body 111 at a first voltage drop generating point P1, and the other end of the first voltage stabilizing module 123 (for example, the power output end of the diode) is electrically connected to the second light-emitting body 112; and one end of the second voltage stabilizing module 124 (for example, the power input end of the diode) is electrically connected to the second power distribution group and the second light-emitting body 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-emitting body 111; and 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 clamped with tweezers and set at the first position R1, the uppermost power distribution group 1211 (also referred to as the first power distribution group) of the two power distribution groups 1211 is electrically connected to the power supply 13 via the jumper 122, and a supply current corresponding to a supply voltage transmitted from the power supply 13 will begin to be split into a first shunt and a second shunt at the first voltage drop generating point P1, wherein the first shunt is directly transmitted to the first light-emitting body 111, so that the first light-emitting body 111 emits light with a CCT of 5000K and less than the first original luminous flux, referred to as the first luminous flux, and the first luminous flux is less than the first original luminous flux. After the second shunt passes through the diode of the first voltage stabilizing module 123, there is a voltage drop of a diode (that is, the voltage drop is generated between the first voltage drop generating point P1 and the power output terminal of the first voltage stabilizing module 123). The voltage after the voltage drop is transmitted to the second light-emitting body 112, so that the second light-emitting body 112 emits a light with a CCT of 3000K and less than the second original luminous flux. For example, when the voltage drop is about 5% of the supply voltage, the luminous flux drops sharply to about half of the value without the voltage drop, which is called the second luminous flux. The second luminous flux is less than the second original luminous flux. Therefore, the first luminous flux of the first light-emitting body 111 and the second luminous flux of the second light-emitting body 112 are mixed into a light with a first mixed CCT (the total luminous flux of the aforementioned first luminous flux and the aforementioned second luminous flux).

[0072] See also Figure 7For example, when the jumper 122 is clamped with tweezers and set at the second position R2, the lower power distribution group 1211 (also referred to as the second power distribution group) of the two power distribution groups 1211 is electrically connected to the power supply 13 through the jumper 122, and a supply current transmitted from the power supply 13 will begin to be split into a third split and a fourth split at the second voltage drop generating point P2, wherein the third split is directly 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, which is called the third luminous flux, and the third luminous flux is less than the second original luminous flux. After the fourth shunt 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 terminal of the second voltage stabilizing module 124). The voltage after the voltage drop is transmitted to the first light-emitting body 111, so that the first light-emitting body 111 emits a light with a CCT of 5000K and less than the first original luminous flux. For example, when the voltage drop is about 5% of the supply voltage, the luminous flux drops sharply to about half of the value without the voltage drop, which is called the fourth luminous flux. The fourth luminous flux is less than the first original luminous flux. Therefore, the fourth luminous flux is mixed with the third luminous flux to form a light with a second mixed CCT. The first mixed CCT and the second mixed CCT are different CCTs.

[0073] Please refer to the Figure 1 and Figure 2 The cover 21 can cover 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-transmitting material so that the light emitted by the light-emitting body 11 can pass through the cover 21; in addition, the shape of the cover 21 can be determined according to the shape of the circuit board 14. In a preferred embodiment of the present invention, the shape of the circuit board 14 is a rectangle, and the shape of the cover 21 is a rectangular shell.

[0074] Furthermore, the hollow plate 22 is arranged around the cover 21, and the hollow plate 22 fixes the light-emitting device 1 on a wall (not shown in the figure) by a plurality of fixing members 221. The wall may be, for example but not limited to, a ceiling. The hollow plate 22 may contact the ceiling and be fixed in a recess (not shown in the figure) of the ceiling by the fixing members 221, wherein the control circuit 12 is arranged in the recess of the ceiling, and the light-emitting body 11 is arranged outside the ceiling relative to the control circuit 12, so that the space requiring light can be illuminated. In addition, the shape of the hollow plate 22 is determined according to the shape of the cover 21. In one preferred embodiment of the present invention, the shape of the cover 21 is a rectangular shell, and the shape of the hollow plate 22 is a rectangular pattern. Please refer to Figure 8As shown, it is a three-dimensional schematic diagram of the overall structure of the second preferred embodiment of the lamp of the present invention, wherein the cover body 21 is in the form of a cylinder, and the hollow plate 22 is also in the form of a circle; however, it must be noted that the shapes of the circuit board 14, the cover body 21 and the hollow plate 22 are for the convenience of explanation, and are not limited to the present invention, and those skilled in the art should know that the different shapes of the circuit board 14, the cover body 21 and the hollow plate 22 are only differences in the appearance of the lamp 2, and will not affect the actual implementation of the present invention.

Claims

1. A light emitting device, characterized in that: At least include: a first light emitting body (111) and a second light emitting body (112), wherein the first light emitting body (111) and the second light emitting body (112) are capable of emitting light of different correlated color temperatures or light of different wavelengths; and A control circuit (12) comprises a power distributor (121), a first voltage stabilizing module (123) and a second voltage stabilizing module (124); wherein the power distributor (121) comprises at least two power distribution groups (1211), each of the power distribution groups (1211) comprising two independently arranged electrodes (12111); the at least two power distribution groups (1211) are respectively a first power distribution group and a second power distribution group; one end of the first voltage stabilizing module (123) is electrically connected to the first light-emitting body (111), and the other end is electrically connected to the second power distribution group; and one end of the second voltage stabilizing module (124) is electrically connected to the second power distribution group, and the other end is electrically connected to the second light-emitting body (112); The first power distribution group is electrically connected to the first light-emitting body (111), and the first voltage stabilizing module (123) and the second voltage stabilizing module (124) are respectively provided with at least one diode; the power output end of the first voltage stabilizing module (123) is electrically connected to the first light-emitting body (111), and the power input end of the first voltage stabilizing module (123) is electrically connected to the second power distribution group; the power output end of the second voltage stabilizing module (124) is electrically connected to the second light-emitting body (112), and the power input end of the second voltage stabilizing module (124) is electrically connected to the second power distribution group; the light-emitting device (1) further includes a power supply (13), the power input end of the first voltage stabilizing module (123), the power input end of the second voltage stabilizing module (124) and the second power distribution group are electrically connected and intersect at a junction (P); the first power distribution group and the One of the electrodes (12111) of the second power distribution group is electrically connected to the power supply (13); another of the electrodes (12111) of the first power distribution group and the second power distribution group is electrically connected to the first light-emitting body (111) and the intersection (P) respectively; and the light-emitting device (1) further comprises a jumper (122), the jumper (122) being provided with a connecting line (1222) and endpoints (1221) at both ends of the connecting line (1222). When the two endpoints (1221) of the jumper (122) are respectively electrically contacted with the two electrodes (12111) of the power distribution group (1211), the jumper (122) transmits the electric energy provided by the power supply (13) to the first light-emitting body (111) and / or the second light-emitting body (112).

2. The light emitting device according to claim 1, characterized in that: When the first power distribution group is electrically connected to the power supply (13) via the jumper (122), the electric energy provided by the power supply (13) is transmitted to the first light-emitting body (111).

3. The light emitting device according to claim 2, characterized in that: When the second power distribution group is electrically connected to the power supply (13) by the jumper (122), a supply current transmitted from the power supply (13) will begin to be split at the junction (P), wherein one of the split currents passes through the first voltage stabilizing module (123), generates a voltage drop between the junction (P) and the power output end of the first voltage stabilizing module (123), and causes the first light-emitting body (111) to emit a first luminous flux; and the other split current passes through the second voltage stabilizing module (124), generates another voltage drop between the junction (P) and the power output end of the second voltage stabilizing module (124), and causes the second light-emitting body (112) to emit a second luminous flux.

4. The light emitting device according to claim 3, characterized in that: The control circuit (12) further includes a third power distribution group, which also includes two independently arranged electrodes (12111), one of which is electrically connected to the power supply (13), and the other of which is electrically connected to the second light-emitting body (112). When the third power distribution group is electrically connected to the power supply (13) by the jumper (122), the electric energy provided by the power supply (13) is transmitted to the second light-emitting body (112) or the power input terminal of the second voltage stabilizing module (124).

5. The light emitting device according to claim 4, characterized in that: The first light-emitting body (111) and / or the second light-emitting body (112) is a single light-emitting diode, or is a light-emitting diode group formed by a plurality of light-emitting diodes connected in series, and does not include any resistor.

6. The light emitting device according to claim 5, characterized in that: The first voltage stabilizing module (123) and / or the second voltage stabilizing module (124) is respectively a diode or a plurality of diodes connected in series.

7. A light emitting device, characterized in that: At least include: a first light emitting body (111) and a second light emitting body (112), wherein the first light emitting body (111) and the second light emitting body (112) are capable of emitting light of different correlated color temperatures or light of different wavelengths; and A control circuit (12) comprises a power distributor (121) and a first voltage stabilizing module (123); wherein the power distributor (121) comprises at least two power distribution groups (1211), each of the power distribution groups (1211) comprising two independently arranged electrodes (12111); the at least two power distribution groups (1211) are respectively a first power distribution group and a second power distribution group, the first power distribution group is electrically connected to the first light-emitting body (111), the power input end of the first voltage stabilizing module (123) is electrically connected to the first power distribution group at a first voltage drop generating point (P1), and the power output end of the first voltage stabilizing module (123) is electrically connected to the second light-emitting body (112); The second power distribution group is electrically connected to the second light-emitting body (112), and the first voltage stabilizing module (123) is provided with at least one diode; the light-emitting device (1) further comprises a jumper (122) and a power supply (13); when the first power distribution group is electrically connected to the power supply (13) by the jumper (122), a supply voltage transmitted by the power supply (13) will start to be divided into a first branch and a second branch at the first voltage drop generation point (P1), wherein the first branch is connected to the second branch. A shunt is directly supplied to the first light-emitting body (111) and causes the first light-emitting body (111) to emit a first luminous flux; and after the second shunt passes through the first voltage-stabilizing module (123), a 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 causes the second light-emitting body (112) to emit a second luminous flux; and the first luminous flux of the first light-emitting body (111) and the second luminous flux of the second light-emitting body (112) are mixed to form a first mixed CCT.

8. The light emitting device according to claim 7, characterized in that: The control circuit (12) further comprises a second voltage stabilizing module (124), the power input end of the second voltage stabilizing module (124) being electrically connected to the second power distribution group at a second voltage drop generating point (P2), and the power output end of the second voltage stabilizing module (124) being electrically connected to the first light-emitting body (111), the second power distribution group being electrically connected to the second light-emitting body (112), and the second voltage stabilizing module (124) being provided with at least another diode.

9. The light emitting device according to claim 8, characterized in that: When the second power distribution group is electrically connected to the power supply (13) by the jumper (122), the supply voltage transmitted by the power supply (13) will start to be split into a third branch and a fourth branch at the second voltage drop generation point (P2), wherein the third branch is directly transmitted to the second light-emitting body (112) so that the second light-emitting body (112) emits a third luminous flux; and after the fourth branch passes through the second voltage stabilizing module (124), another voltage drop is generated between the second voltage drop generation point (P2) and the power output end of the second voltage stabilizing module (124) and the first light-emitting body (111) emits a fourth luminous flux; the fourth luminous flux is mixed with the third luminous flux to form a second mixed CCT; and the first mixed CCT is different from the second mixed CCT.

10. A lamp, characterized in that: At least include: A lighting device (1) as claimed in claim 1; A cover body (21), the cover body (21) covers the light emitting device (1).

11. A lamp, characterized in that: At least include: A lighting device (1) as claimed in claim 7; A cover body (21), the cover body (21) covers the light emitting device (1).

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