WO2014008731A1

WO2014008731A1 - Solid-state lighting device, solid-state lighting source, lighting device and control method thereof

Info

Publication number: WO2014008731A1
Application number: PCT/CN2012/084927
Authority: WO
Inventors: 杨毅
Original assignee: 深圳市绎立锐光科技开发有限公司
Priority date: 2012-07-11
Filing date: 2012-11-21
Publication date: 2014-01-16
Also published as: CN102858054A; CN102858054B

Abstract

The present invention provides a solid-state lighting device, a solid-state lighting source and a lighting device, including a solid-state lighting chip set, and the solid-state lighting chip set includes the first packet and the second packet. Further it comprises control means; when the brightness control signal is in a first gray range, the control means drives only the first packet in a lighting state, and through controlling the drive voltage or drive current of the first packet, lighting brightness of the solid-state lighting device can reach the grayscale value represented the brightness control signal, at the same time making the second packet is in the turnoff state. In the solid-state lighting device of the present invention, when the brightness control signal is in a relatively low grayscale range, only the first packet of the solid-state lighting is lighten, but leaving the rest of the solid-state lighting chip is turned off; at this time the driving current or voltage of the first packet must be increased to compensate for the brightness decline caused by the remaining solid-state lighting chip being turned off, further improving the stability of the drive control.

Description

Solid state light emitting device, solid state light emitting source, lighting device and control method thereof

The present invention relates to the field of solid state lighting, and more particularly to stage lighting based on solid state lighting and a method of controlling the same. Background technique

In the existing solid-state lighting technology, a method in which a multi-color solid-state light-emitting device is simultaneously used to obtain mixed light or monochromatic light of different colors and different brightness has been widely used. For example, the red, green, and blue LEDs (L i ght Emi tt ing D i ode) are used in the luminaire, and the intensity of the final light emitted by the luminaire can be controlled by controlling the driving currents of the three sets of LEDs respectively to control the intensity thereof. And brightness.

An optical structure of an existing LED luminaire is shown in Figure 1. The light emitted by the LED array 101 is collimated by the lens array 102 and then incident on the focusing lens 103. After being focused by the focusing lens 103, it is incident on the surface of a diaphragm or pattern disk 104, and is filtered by the aperture or pattern disk 104 to generate a specific After the shape or pattern, the projection lens 105 projects the light.

There are two types of methods for controlling the luminous intensity of LEDs. The first type uses the pulse-driven LED method to control the brightness of the LED by controlling the pulse width and duty ratio of the pulse. This type of method has the advantages of convenient and accurate modulation, but there is a problem: for the illumination that requires imaging Fields (such as stage lighting;), cameras and their playback devices (such as television) have a specific refresh frequency, for example, the frequency is 60 Hz in China, and 50 Hz in foreign countries. If the frequency of the LED modulation pulse is not high enough, the brightness change of the LED will "snap" with the refresh rate of the camera, that is, the flashing of the light is seen in the camera and its playback device. Of course, increasing the LED modulation frequency can solve this problem, but the structure of the driver circuit is complicated and costly.

A second type of method of controlling the luminous intensity of an LED is to use a DC to drive the LED, for example by controlling the driving voltage or current of the LED to control the intensity of the LED. Since the LED is DC-illuminated, there is no such "beat frequency" problem, but the problem with this method is that the LED has a driving threshold, and when the driving current or voltage is lower than this threshold, the LED does not emit light, and when driving When the current or voltage reaches this threshold, the LED immediately illuminates, that is, the control of the LED near the threshold has a sudden change characteristic, which is not continuously changed. On the other hand, the operating threshold of the LED is not fixed, but may vary with external conditions such as temperature. Therefore, when the LED is required to operate in a very low luminance state, there is a possibility that the LED is unstable due to the operation of the LED near the driving threshold, and flicker and abrupt phenomenon at low luminance occur. It can be understood that the flicker and mutation of a single color at low brightness will cause the color of the mixed light emitted by the luminaire to flicker and abruptly change, and the human eye is very sensitive to the change of color, which seriously affects the use of the LED luminaire. performance.

For example, in the LED array of the luminaire shown in Figure 1, all of the LEDs are connected in series and driven by a constant current. Controlled, so the brightness of the luminaire can be changed by changing the drive current of the LED array. In general, the brightness of the luminaire is controlled by a multi-level gray scale control, such as 256 gray scales, indicating that the brightness range is 0 to 255. When the brightness is 255, the luminaire is the brightest state. At this time, the driving current of the LED array is the maximum, and the maximum current value is 1 Α. When it is desired that the brightness of the luminaire is 0, the LED array is turned off so that it does not emit light, and when it is desired that the illuminance of the luminaire is 1 gray, the driving current of the LED array must be controlled, so that the LED array is The brightness reaches 1 / 255 when driving at 1A, and its current may be 10mA. The driving threshold current of an LED is related to many factors, such as production process, manufacturer's brand, packaging method, etc., generally ranging from 5 mA to 50 mA. In this case, a driving current of 10 mA may cause the driving of the LED array to be unstable, that is, some LEDs may be lit, some may not, or sometimes they may be lit and sometimes not. On the other hand, when it is desired that the brightness gray scale of the luminaire is increased, the driving current of the LED array will also increase. At a certain gray level, as the illuminating control of the LED is normal, the illuminating of the luminaire may be in this gray level. A sudden brightening phenomenon occurs.

Therefore, there is a need for a solid state lighting device and corresponding control method that solves the problem of unstable operation at low brightness. Summary of the invention

The main technical problem solved by the present invention is to provide a solid-state light-emitting device, a solid-state light-emitting source, a lighting device and a control method thereof, and at the same time solve the problem of "beating frequency" phenomenon occurring with the image capturing refresh frequency and unstable under low-light operation. problem.

The invention provides a solid-state light-emitting device with adjustable brightness and brightness, comprising a solid-state light-emitting chip set, the solid-state light-emitting chip set comprising at least two solid-state light-emitting chips, the solid-state light-emitting chip set comprising at least two chip groups that can be independently driven, One packet and two packets. And a control device, configured to receive an external brightness control signal, and drive the solid-state light-emitting chip group to emit light according to the brightness control signal; and when the gray-scale value represented by the brightness control signal is in the first gray-scale range The control device only drives the first group to be in a lighting state, and controls the first group of driving voltages or driving currents to cause the solid state lighting device to reach the gray level value represented by the brightness control signal while the second group is turned off. status. The lowest grayscale value of the first grayscale range is equal to the lowest grayscale value of the entire grayscale range, and the highest grayscale value is not more than half of the highest grayscale value of the entire grayscale range.

The number of solid-state light-emitting chips of the first group is not more than half of the total number of solid-state light-emitting chips of the solid-state light-emitting chip group.

The present invention also provides a solid-state light-emitting source comprising at least two solid-state light-emitting devices as described above, which respectively emit primary colors of different colors; and a wavelength combining device for combining the light emitted by each solid-state light-emitting device into one The beam is mixed to form the emitted light of the solid-state light source; further comprising a master control device for receiving an external brightness and color control signal and decomposing the light into a brightness control signal for each of the primary colors, and outputting to each solid state light Control device of the device.

The present invention also provides an illumination device comprising the above solid state light emitting device or solid state light source as a light source. In the solid-state light-emitting device of the present invention, when the gray scale value represented by the brightness control signal is in the first gray scale range where the brightness is relatively low, only the first group of solid-state light-emitting chips are lit and the remaining solid-state light-emitting chips are turned off. status. With respect to the case of all lighting, the driving current or voltage of the first packet must be increased to compensate for the decrease in luminance caused by the shutdown of the remaining solid-state light-emitting chips, so that the driving voltage or current of the first packet is further away from the driving threshold, and further Improve the stability of the drive control. DRAWINGS

1 is a schematic view showing the optical structure of a conventional LED lamp;

2 is a schematic view showing the operation of the solid-state light-emitting device of the first embodiment of the present invention in a first gray scale range; FIG. 3 is a schematic view showing the optical structure of the solid-state light-emitting source according to the second embodiment of the present invention;

4a is a schematic flow chart of a control method of a solid state light emitting device of the present invention;

4b is another possible schematic flow chart of the control method of the solid state light emitting device of the present invention. detailed description

First of all, it should be noted that the present invention does not relate to the structure of a specific luminaire. As long as the luminaire includes two or more solid-state light-emitting chips as the light-emitting source, the present invention can be used to control the illuminance. Therefore, the optical structures shown in Figs. 1 and 4 of the present invention are by way of example only and are not intended to limit the scope of the invention.

The present invention provides a solid state light emitting device 200, 2 with adjustable brightness. The solid state light emitting device 200 includes a solid state light emitting chipset 201 including five solid state light emitting chips 201a, 201b, 201c, 201d, 201e, the solid state light emitting chipset including two chips that can be independently driven The packet, the first packet and the second packet, wherein the first packet includes solid state light emitting chips 201b and 201d, and the second packet includes solid state light emitting chips 201a, 201c and 201e.

The solid state lighting device 200 further includes a control device 210 for receiving an external brightness control signal (not shown) and driving the solid state light emitting chip set 201 to emit light in a DC driven manner according to the brightness control signal. In the present embodiment, the control device 210 connects the solid-state light-emitting chips 201b and 201d (ie, the first group) through the connection 211 and simultaneously controls the light-emitting thereof, and connects the solid-state light-emitting chips 201a, 201c, and 201e through the connection 212 ( That is, the second packet) and its illumination is controlled at the same time, and the control device 210 can independently control the switches and the luminance of the first packet and the second packet.

It should be noted that the connections 211 and 212 in the figure represent only the relationship of electrical connections, and do not represent and define a specific connection. In practical applications, solid-state light-emitting chips of the same group may be connected and controlled by series, parallel, series-parallel, etc., or connected by other means, which does not affect the effect of the present invention. Common solid-state light-emitting chips, such as LEDs and laser diodes, are generally connected in series and using a constant current drive. It is driven in a dynamic manner; of course, it is also within the scope of the present invention to use a parallel connection and drive using a constant voltage.

In this embodiment, the control device may directly receive an external brightness control signal, or may receive an external brightness control signal through another receiving device and then transmit the same to the control device. In practical applications, the transmission of the brightness control signal has multiple formats, which is often manifested by means of a control protocol. For example, in lighting control, the DMX512 protocol is a widely used protocol in which the number of bits, format, synchronization, and verification of control signals are specified. In the present invention, the format of the control signal to be specifically used is not specified and limited, but the luminance information in the control signal is directly used. After obtaining the luminance information in the control signal, the grayscale value represented by the luminance information can be obtained by decoding and converting the signal. The specific decoding and conversion process is specifically stipulated according to the specific use protocol, and can be determined according to the actual situation in practical applications, and will not be described here.

As described in the background, brightness-adjustable luminaires have an adjustable grayscale range, such as the 256-level grayscale, which is a 0 to 255 grayscale value used in the DMX512 protocol. In the solid-state lighting device 200 of the present invention, the control means 210 controls the first packet and the second packet as follows:

When the grayscale value V represented by the brightness control signal is in the first grayscale range, the control device drives only the first packet to be in a lighting state, and causes the luminance of the solid state lighting device by controlling the driving voltage or driving current of the first grouping. The grayscale value V is reached while the second packet is in the off state. Wherein, the first gray scale range refers to a continuous gray scale range with the lowest gray scale value in the whole gray scale range, that is, the lowest gray scale value of the first gray scale range is equal to the lowest gray scale value of the entire gray scale range.

In the solid-state light-emitting device 200, since the direct current driving is used instead of the pulse driving, the "beat frequency" phenomenon of the light source and the image pickup apparatus and the playback apparatus is avoided. When the desired grayscale value V is in the first grayscale range with the lowest grayscale, the control causes the second packet to be in a closed state and only uses the first packet to provide the light output of the entire luminaire, as compared to when the two packets are simultaneously illuminated. At this time, the driving voltage or the driving current of the first group is inevitably increased to compensate for the decrease in luminance caused by the second packet being turned off, which causes the driving voltage or current of the first packet to be away from the driving threshold, thereby achieving more stable control.

It can be understood that the number of solid-state light-emitting chips of the first group cannot be excessive, otherwise the improvement of the driving current and voltage is not significant, which will affect the effect of achieving stable control. In the experiment, the inventors found that the number of solid-state light-emitting chips of the first group cannot be more than half of the total number of solid-state light-emitting chips of the solid-state light-emitting chip group 201, otherwise the first gray-scale value when the desired gray-scale value is within the first gray-scale range The increase of the driving voltage and current of the group does not exceed twice that of the solid-state light-emitting chipset 201 when it is completely lit, which often fails to achieve the purpose of stably controlling the gray scale.

In the present invention, it is a prior art to control the driving current or voltage of the first packet so that the luminance of the light reaches the grayscale value V, and there are various methods. For example, by measuring the first group in advance, recording the difference The brightness corresponding to the current (or voltage) and converts the brightness to a grayscale value. The correspondence table of the current (or voltage) and the grayscale value is stored in a memory inside the control device 210, and when a specific grayscale value V is required, the current corresponding to the grayscale value V is directly searched in the correspondence table (or Voltage), and this current (or voltage) is used to drive the first packet. When the discrete values in the correspondence table cannot accurately find the required grayscale value V, the grayscale value closest to the grayscale value V and its corresponding current (or voltage) can be found in the correspondence table. The current (or voltage) corresponding to the gray scale value V is calculated using the difference method. Another method is to pre-fit the relationship between the driving current (or voltage) of the solid-state light-emitting chip and the gray-scale value into a formula (such as a polynomial fitting;), and store each coefficient of the formula in the control device 210; When a specific grayscale value V is required, it is taken into the formula to directly calculate the required drive current (or voltage). It is to be understood that these methods are only examples and are not intended to limit the invention. In addition, in the following description of the present invention, regarding controlling the driving current or voltage of the second grouping or the entire solid-state light-emitting chipset such that the luminance of the light reaches a specific grayscale value, the manner described in this paragraph can also be used, Will not repeat them.

The experiment by the inventor is exemplified. The inventor used an 8x8 LED array as the light source, and specified that the light source was controlled to 256 gray scales, and when the light source reached the brightest gray level value of 255, each LED in the LED array was lit with the maximum current 1A DC drive. In this case, when the light source needs to achieve a grayscale value of 1, if each LED is lit, the driving current should be about 10 mA; and for the LED used in this experiment, the threshold current is 10 mA- 15mA, so the grayscale value 1 will flicker when it is lit, and it cannot be stably controlled. In this experiment, the inventors divided the 64 LEDs into two equal groups, the first group being 32. When the grayscale value V is less than 126, only the first packet is illuminated to achieve the grayscale value. In order to achieve the grayscale value of 1, the driving current of the first group needs to be 20.2 mA, which is higher than the threshold current to achieve stable control; and for other grayscale values greater than 1, the driving current is inevitably increased and further away Threshold, so stable control can also be achieved. When the required grayscale value is 126, as long as the LED of the first group is lit with a driving current of 1 A, since its number is half of the total number of LEDs, its brightness should also be half of it, so the illuminating gray scale is about For 126.

In practical applications, the upper gray scale value H of the first gray scale range should be in a reasonable interval, which needs to be determined according to actual needs. First, the lower limit of the interval can be determined by testing. Specifically, make all the LEDs light up, and try to control them at low grayscale values, such as 1, 2, 3, accumulate one by one and try to stabilize the control until a grayscale value n is found to stabilize the control, then the first The upper gray scale H of the gray scale range must be greater than or equal to the gray scale value n-1, otherwise the problem of unstable control will not be completely solved. In addition, since the number of solid-state light-emitting chips of the first group is not more than half of the total number of solid-state light-emitting chips of the solid-state light-emitting chip group 201, the upper gray level H of the first gray-scale range should not be greater than the maximum gray level (on the upper In the example, it is half of 255), otherwise the upper gray scale value H of the first gray scale range cannot be satisfied even if the solid-state light-emitting chip of the first group is illuminated with the maximum current.

Therefore, the upper gray level H of the first gray scale range should satisfy: n - \ < H <

2

In practical applications, the inventors have found that n tends to be relatively small, for example 5, and the upper gray scale H can also be smaller, for example, H=10.

After the specific value of the upper gray level H of the first gray level range is determined within the range, the range of the number of solid state light emitting chips of the first group may be determined according to the upper gray level H of the first gray level range. Obviously, the number of solid-state light-emitting chips of the first group cannot be too small, otherwise the gray scale H cannot be achieved even if it is lit with the maximum current. Therefore, the ratio of the number of solid-state light-emitting chips of the first group to the total number of solid-state light-emitting chips of the solid-state light-emitting chip group 201 should not be lower than the maximum gray-scale value H of the first gray-scale range and the maximum gray-scale value of the entire gray-scale range. The ratio is such that the solid-state light-emitting chip of the first group can surely achieve the maximum gray-scale value H.

Therefore, in the case where the maximum gray scale value H of the first gray scale range is relatively small, the number of solid-state light-emitting chips of the first group is often not more than one tenth of the total number of solid-state light-emitting chips of the solid-state light-emitting chip group. That is, a small number of solid state light emitting chips are used as the first grouping to provide low gray scale brightness. In this case, preferably, the solid state light emitting chips in the solid state light emitting chip group 201 constitute an array, and the first grouped solid state light emitting chips are evenly distributed in the array. Thus, even if only the first group is lit, the uniformity of illumination of the solid-state lighting device is not greatly affected.

In the above description, a control method when the required grayscale value V is within the first grayscale range is described, and when the grayscale value V represented by the luminance control signal is a grayscale value outside the first grayscale range There are at least two ways to control the operation of the solid state lighting device 200.

The first mode: the control device 210 drives only the second group to be in a lighting state, and controls the brightness of the solid state lighting device 200 to reach the gray level value V represented by the brightness control signal by controlling the driving voltage or the driving current of the second group. At the same time, the first packet is turned off.

The second mode: the control device drives the first group and the second group to be in a lighting state at the same time, and controls the brightness of the solid state lighting device to reach the brightness control signal by controlling the driving voltage or the driving current of the first group and the second group. The gray scale value is V. Obviously, this approach can make full use of all solid-state light-emitting chips, requiring less solid-state light-emitting chips to achieve the same brightness.

In this embodiment, the solid state light emitting chips in the solid state light emitting chip set 201 have the same or similar illuminating colors, such as blue LEDs or laser diodes or a mixture thereof.

In the above description of the embodiment, in the determination regarding the upper limit of the first gray scale range and the lower limit of the number of solid-state light-emitting chips of the first group, it is assumed that all of the solid-state light-emitting chips have the same amount of light emission, actually, The first group of solid state light emitting chips are used to generate low brightness (grayscale) light, so the light emitting area of the first grouped solid state light emitting chip may be smaller than the light emitting area of the second grouped solid state light emitting chip, that is, the first grouping use size is small. Luminous The chip, such that the first group of light is weaker, more in line with the requirements of low brightness (grayscale) output. Since the efficiency of the small-sized chip is often higher than that of the large-sized chip, this is advantageous in improving the luminous efficiency of the solid-state light source device.

In the present embodiment, the solid state light emitting chip set 201 includes five solid state light emitting chips. According to the above description, the present invention can be applied as long as the number of solid-state light-emitting chips of the solid-state light-emitting chip group is not less than two. In practical applications, the solid state light emitting chipset can also be divided into more than two packets, but as long as at least two of the packets satisfy the conditions of the present invention, they should fall within the scope of the present invention.

According to the above description, the present invention also provides a control method of the above solid state light emitting device, comprising the following steps:

控制. The control device receives an external brightness control signal;

判断 determining whether the grayscale value represented by the brightness control signal is in the first grayscale range;

If the grayscale value represented by the brightness control signal is in the first grayscale range, the following steps are also included:

C. Calculate or look up the table according to the gray scale value to obtain the driving voltage value or the driving current value of the first group;

D. driving the first packet using the driving voltage value or the driving current value of the first packet while leaving the second packet in a closed state;

If the grayscale value represented by the brightness control signal is not in the first grayscale range, the method further includes the following steps: calculating or looking up the table according to the grayscale value to obtain the driving voltage value or the driving current value of the second group; The drive voltage value or drive current value of the two packets drives the second packet to be illuminated while the first packet is in the off state.

The flow chart of this control method is shown in Figure 4a. In this method, if the grayscale value represented by the brightness control signal is not in the first grayscale range, there may be another control method, namely:

If the grayscale value represented by the brightness control signal is not in the first grayscale range, the method further includes the following steps: calculating or looking up the table according to the grayscale value to obtain driving voltage values or driving current values of the first packet and the second packet. ;

The driving of the first packet and the second packet are respectively driven using the driving voltage value or the driving current value of the first packet and the second packet. A flow chart of the control method is shown in Figure 4b.

A second embodiment of the invention is a solid state light source, as shown in FIG. The difference from the light source shown in Fig. 1 is that the light-emitting portion includes three sets of solid-state light-emitting devices 301, 302, and 303 as described in the first embodiment described above, which respectively emit primary colors of different colors. In this embodiment, the solid state light emitting device 301 emits red light, the solid state light emitting device 302 emits green light, and the solid state light emitting device 303 emits blue light. The independent light switch and brightness control of the three sets of solid state light emitting devices can control the light emitted by the light source. Brightness and color.

The solid-state light-emitting source in this embodiment further includes a wavelength combining device, the wavelength combining device is formed by a cross shape The cross-laid spectroscopic filters 321 and 322 are configured to combine the light emitted by each solid-state light-emitting device into a bundle of mixed light to form the exiting light of the solid-state light-emitting source. Specifically, the spectroscopic filter 321 can reflect the blue light emitted by the solid state light emitting device 303 while transmitting the green light emitted by the solid state light emitting device 302. The spectroscopic filter 322 can reflect the red light emitted by the solid state light emitting device 301 while transmitting the solid state light emitting device 302. The green light emitted.

The solid state light source in this embodiment further includes a master control device (not shown) for receiving external brightness and color control signals, and decomposing them into brightness control signals for each of the primary colors, and outputting A control device (not shown) of each solid state light emitting device. It can be understood that in the embodiment, the control means of each solid state light emitting device can also be integrated in the master control device.

Since each of the primary color lights is generated by the solid-state light-emitting device of the first embodiment, the problem of unstable illumination can be avoided, and the illumination of the solid-state illumination source of the present embodiment is a mixture of illumination of the solid-state illumination devices, and also does not. There is a problem that the luminescence is unstable.

It can be understood that although the solid-state light-emitting source of the present embodiment uses three sets of solid-state light-emitting devices 301, 302, and 303 as light-emitting sources, the effect of stable control of mixed light can be achieved as long as there are two or more solid-state light-emitting devices.

The present invention also provides an illumination device comprising the above solid state light emitting device or solid state light source as a light source. The above is only the embodiment of the present invention, and thus does not limit the scope of the invention, and the equivalent structure or equivalent process transformation made by using the specification and the drawings of the present invention, or directly or indirectly applied to other related technologies. The scope of the invention is included in the scope of patent protection of the present invention.

Claims

A solid-state light-emitting device with adjustable brightness and brightness, comprising:

a solid state light emitting chip set comprising at least two solid state light emitting chips, the solid state light emitting chip set comprising at least two chip groups, a first group and a second group, which can be independently driven;

a control device, configured to receive an external brightness control signal, and drive the solid-state light-emitting chip group to emit light according to the brightness control signal; and when the gray-scale value represented by the brightness control signal is in the first gray-scale range, control The device only drives the first group to be in a lighting state, and controls the first group of driving voltages or driving currents to cause the brightness of the solid state lighting device to reach a gray level value represented by the brightness control signal while the second group is turned off. a state in which the lowest grayscale value of the first grayscale range is equal to the lowest grayscale value of the entire grayscale range, and the highest grayscale value is not more than half of the highest grayscale value of the entire grayscale range;

2. The solid state light emitting device according to claim 1, wherein when the grayscale value represented by the brightness control signal is a grayscale value outside the first grayscale range, the control device drives only the second packet to be lit. a state, and by controlling a driving voltage or a driving current of the second group, the light-emitting luminance of the solid-state lighting device reaches a grayscale value represented by the brightness control signal while the first packet is in a closed state.

3. The solid state light emitting device according to claim 1, wherein the control device drives the first packet and the second packet when a grayscale value represented by the brightness control signal is a grayscale value outside the first grayscale range At the same time, it is in a lighting state, and the luminance of the solid state lighting device is brought to the gray level value represented by the brightness control signal by controlling the driving voltage or driving current of the first group and the second group.

4. The solid state light emitting device according to claim 1, wherein a ratio of a maximum grayscale value of the first grayscale range to a maximum grayscale value of the entire grayscale range is not higher than the first grouped solid state light emitting chip. The ratio of the number to the total number of solid state light emitting chips of the solid state light emitting chipset.

5. The solid state lighting device of claim 1, wherein the number of solid light emitting chips of the first group is no more than one tenth of the total number of solid state light emitting chips of the solid state light emitting chip set.

The solid state light emitting device according to any one of claims 1 to 5, wherein the solid state light emitting chips in the solid state light emitting chip set form an array, and the first group of solid state light emitting chips are hooked on the array. Among them.

The solid-state light-emitting device according to any one of claims 1 to 5, wherein the solid-state light-emitting chips in the solid-state light-emitting chip group have the same or similar light-emitting colors.

The solid-state light-emitting device according to any one of claims 1 to 5, wherein a light-emitting area of the solid-state light-emitting chip of the first group is smaller than a light-emitting area of the solid-state light-emitting chip of the second group.

9. A solid state light emitting source, comprising:

At least two solid-state light-emitting devices according to any one of claims 1 to 8, which respectively emit primary colors of different colors;

a wavelength combining device for combining light emitted by each solid state light emitting device into a bundle of mixed light to form an exiting light of the solid state light emitting source;

The master control device is configured to receive external brightness and color control signals and decompose them into brightness control signals for each of the primary colors to be output to the control devices of the solid state lighting devices.

A lighting device characterized by comprising the solid-state lighting device according to any one of claims 1 to 8 as a light-emitting source, or the solid-state light-emitting source according to claim 9 as a light-emitting source.