CN111198333B - Method and device for evaluating luminous efficacy of lighting equipment, equipment and storage medium thereof - Google Patents
Method and device for evaluating luminous efficacy of lighting equipment, equipment and storage medium thereof Download PDFInfo
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Abstract
The application relates to a method and a device for evaluating luminous efficacy of lighting equipment, the equipment and a storage medium thereof. The lighting device luminous efficacy evaluation method comprises the steps of obtaining an initial electrical input power data set and an initial heat dissipation power data set; obtaining an initial light emission power data set based on the initial electrical input power data set and the initial heat dissipation power data set; if the light emitting diode is in a steady state stage, obtaining a steady state electrical input power data group and a steady state heat dissipation power data group; obtaining a steady state lighting power data set based on the steady state electrical input power data set and the steady state thermal dissipation power data set; and evaluating the luminous efficacy of the light-emitting diode according to the initial luminous power data set and the steady-state luminous power data set. The method, the device and the equipment for evaluating the luminous efficiency of the lighting equipment and the storage medium can solve the problem that the traditional scheme has large errors when the luminous efficiency of the LED is evaluated.
Description
Technical Field
The present disclosure relates to the field of lighting technologies, and in particular, to a method and an apparatus for evaluating a luminous efficiency of a lighting device, and a computer device and a storage medium thereof.
Background
The LED is a semiconductor light emitting diode, is a solid semiconductor device, can directly convert electricity into light, is a high-brightness white light emitting diode light emitting source, has high lighting effect, low power consumption, long service life, easy control, no maintenance and full environmental protection, is a new generation solid cold light source, has soft, bright, rich and colorful light, low loss and low energy consumption, is green and environment-friendly, and is suitable for long-time illumination in families, markets, banks, hospitals, hotels and other various public places.
In the use of LEDs, attention is paid to the maximum luminous power of the LEDs, namely, the luminous efficiency of the LEDs. When the traditional scheme judges the luminous efficiency of the LED, the average illumination, the illumination uniformity and the like of the LED are generally measured, and then the luminous power and the luminous efficiency of the LED are judged according to the measurement result. However, the method does not fully consider the properties of the LED, which easily causes the problem of large errors of the judgment result of the luminous efficiency of the LED.
Therefore, the conventional scheme has the problem of large error when judging the luminous efficiency of the LED.
Disclosure of Invention
Therefore, it is necessary to provide a method and an apparatus for evaluating the luminous efficacy of an illumination device, and a storage medium thereof, aiming at the problem that the conventional scheme has a large error when evaluating the luminous efficacy of an LED
A lighting device luminous efficacy assessment method, comprising:
acquiring electrical input power data and thermal dissipation power data of a plurality of time points in a power-on period of a light-emitting diode of the lighting device to obtain an initial electrical input power data group and an initial thermal dissipation power data group;
determining light emitting power data of each time point in the power-on period based on the initial electrical input power data group and the initial heat dissipation power data group to obtain an initial light emitting power data group;
if the light emitting diode is in a steady state stage, acquiring electric input power data and heat dissipation power data within a preset time length to obtain a steady state electric input power data group and a steady state heat dissipation power data group;
determining light-emitting power data of a plurality of time points in the preset time length based on the steady-state electrical input power data group and the steady-state heat dissipation power data group to obtain a steady-state light-emitting power data group;
and evaluating the luminous efficacy of the light-emitting diode according to the initial luminous power data set and the steady-state luminous power data set.
The lighting device luminous efficacy evaluation method obtains an electrical input power data group and a heat dissipation power data group in the power-on period of the light-emitting diode, and obtains an initial electrical input power data group and an initial heat dissipation power data group. And determining the luminous power data of each time point in the power-on period based on the initial electrical input power data group and the initial heat dissipation power data group to obtain an initial luminous power data group. And acquiring an electrical input power data group and a heat dissipation power data group when the light-emitting diode is in a steady state stage to obtain the steady state electrical input power data group and the steady state heat dissipation power data group. And determining the luminous power data of a plurality of time points in the preset duration based on the steady-state electrical input power data group and the steady-state heat dissipation power data group to obtain a steady-state luminous power data group. And finally, evaluating the luminous efficacy of the light-emitting diode according to the initial luminous power data set and the steady-state luminous power data set. The lighting equipment luminous efficacy evaluation method provided by the application judges the luminous efficacy of the light-emitting diode based on the electrical input power data and the heat dissipation power data of the light-emitting diode, takes the influence of the heat dissipation power data of the light-emitting diode on the luminous efficacy into consideration, and can solve the problem that the traditional scheme has large error when judging the luminous efficacy of the LED.
In one embodiment, the obtaining electrical input power data and thermal dissipation power data at a plurality of time points in a power-on period of a light emitting diode of the lighting device to obtain an initial electrical input power data set and an initial thermal dissipation power data set includes:
acquiring the ambient temperature, the temperature of the light emitting diode substrate and the internal and external surface temperatures of the light emitting diode shell of the lighting equipment at a plurality of time points in the power-on period to obtain ambient temperature data, light emitting diode temperature data, internal surface temperature data and external surface temperature data;
and determining heat dissipation power data of each time point in the power-on period according to the environment temperature data, the light-emitting diode temperature data, the inner surface temperature data and the outer surface temperature data to obtain an initial heat dissipation power data group.
In one embodiment, if the light emitting diode is in a steady-state stage, acquiring electrical input power data and thermal dissipation power data within a preset time duration to obtain a steady-state electrical input power data set and a steady-state thermal dissipation power data set includes:
obtaining the temperature of the environment where the lighting equipment is located, the temperature of the light-emitting diode substrate and the temperature of the inner surface and the outer surface of the light-emitting diode shell at a plurality of time points within the preset time length to obtain environment temperature data, light-emitting diode temperature data, inner surface temperature data and outer surface temperature data;
and determining the heat dissipation power data of each time point in the preset time according to the environment temperature data, the light-emitting diode temperature data, the inner surface temperature data and the outer surface temperature data to obtain the steady-state heat dissipation power data group.
In one embodiment, the evaluating the luminous efficacy of the led according to the initial luminous power data set and the steady-state luminous power data set includes:
acquiring the minimum value of the initial luminous power in the initial luminous power data set to obtain the minimum initial luminous power;
obtaining the average value of all steady-state luminous power data in the steady-state luminous power data group to obtain the average value of the steady-state luminous power;
and evaluating the luminous efficacy of the light-emitting diode according to the minimum initial luminous power and the steady-state luminous power average value.
In one embodiment, the estimating the luminous efficacy of the led according to the minimum initial luminous power and the average value of the steady-state luminous power includes:
obtaining the difference value between the minimum initial luminous power and the steady-state luminous power average value;
if the difference value is larger than or equal to a preset difference value, evaluating the luminous efficiency of the light-emitting diode as luminous efficiency difference;
and if the difference value is smaller than the preset difference value, evaluating the luminous efficiency of the light-emitting diode as normal.
In one embodiment, if the difference is smaller than the preset difference, the light emitting efficiency of the light emitting diode is evaluated as normal, and the method further includes:
acquiring a difference value between the difference value and the preset difference value;
if the difference value between the difference value and the preset difference value is larger than or equal to a first preset value, determining that the luminous efficiency of the light-emitting diode is good;
and if the difference value between the difference value and the preset difference value is smaller than the first preset value, determining that the luminous efficiency of the light-emitting diode is excellent.
In one embodiment, if the led is in the steady state stage, the method further includes:
taking a certain moment in the electrifying period as an initial moment, and acquiring the temperature difference between the temperature of the substrate of the light-emitting diode at the moment and the temperature of the substrate of the light-emitting diode at the next moment;
and within a preset temperature measurement duration, if the temperature differences are less than or equal to a preset temperature difference, determining that the light emitting diode is in a steady state stage.
An illumination apparatus luminous efficacy evaluation device comprising:
the first data acquisition module is used for acquiring electrical input power data and heat dissipation power data of a plurality of time points in a power-on period of a light-emitting diode of the lighting device to obtain an initial electrical input power data group and an initial heat dissipation power data group;
a first calculation module, configured to determine, based on the initial electrical input power data set and the initial thermal dissipation power data set, light emitting power data at each time point in the power-up period, to obtain an initial light emitting power data set;
the second data acquisition module is used for acquiring electrical input power data and heat dissipation power data within a preset time length if the light-emitting diode is in a steady state stage to obtain a steady state electrical input power data group and a steady state heat dissipation power data group;
the second calculation module is used for determining the luminous power data of a plurality of time points in the preset duration based on the steady-state electrical input power data set and the steady-state heat dissipation power data set to obtain a steady-state luminous power data set;
and the evaluation module is used for evaluating the luminous efficacy of the light-emitting diode according to the initial luminous power data set and the steady-state luminous power data set.
A computer device comprising a memory and a processor, the memory having stored therein a computer program which, when executed by the processor, causes the processor to carry out the steps of the method as described above.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method as set forth above.
Drawings
Fig. 1 is a schematic flowchart of a method for evaluating a luminous efficacy of a lighting apparatus according to an embodiment of the present application.
Fig. 2 is a schematic flowchart of a method for evaluating a luminous efficacy of a lighting apparatus according to another embodiment of the present application.
Fig. 3 is a schematic flowchart of a method for evaluating a luminous efficacy of a lighting apparatus according to another embodiment of the present application.
Fig. 4 is a schematic flowchart of a method for evaluating a luminous efficacy of a lighting apparatus according to another embodiment of the present application.
Fig. 5 is a schematic flowchart of a method for evaluating a luminous efficacy of a lighting apparatus according to another embodiment of the present application.
Fig. 6 is a schematic flowchart of a method for evaluating a luminous efficacy of a lighting device according to another embodiment of the present application.
Fig. 7 is a schematic view of a lighting apparatus luminous efficacy evaluation apparatus according to an embodiment of the present application.
Fig. 8 is an internal structural diagram of a computer device according to an embodiment of the present application.
Detailed Description
The LED is a semiconductor light emitting diode, is a solid semiconductor device, can directly convert electricity into light, is a high-brightness white light emitting diode light emitting source, has high lighting effect, low power consumption, long service life, easy control, no maintenance and full environmental protection, is a new generation solid cold light source, has soft, bright, rich and colorful light, low loss and low energy consumption, is green and environment-friendly, and is suitable for long-time illumination in families, markets, banks, hospitals, hotels and other various public places. In the use of LEDs, attention is paid to the maximum luminous power of the LEDs, namely, the luminous efficiency of the LEDs. When the traditional scheme judges the luminous efficiency of the LED, the average illumination, the illumination uniformity and the like of the LED are generally measured, and then the luminous power and the luminous efficiency of the LED are judged according to the measurement result. However, the method does not fully consider the properties of the LED, which easily causes the problem of large errors of the judgment result of the luminous efficiency of the LED. Therefore, the conventional scheme has the problem of large error when judging the luminous efficiency of the LED. Based on the above, the application provides a method and a device for evaluating luminous efficacy of lighting equipment, equipment thereof and a storage medium.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the embodiments disclosed below.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, the present application provides a method for evaluating a luminous efficacy of an illumination device, comprising:
s100, acquiring electrical input power data and thermal dissipation power data of a plurality of time points in a power-on period of a light-emitting diode of the lighting device to obtain an initial electrical input power data group and an initial thermal dissipation power data group.
The plurality of time points may be a plurality of time points set at equal intervals in the power-on period, for example, the starting time of power-on is recorded as 00:00, and the plurality of time points may be 00:15, 00:30, 00: 45. The multiple time points may also be multiple time points set at unequal intervals in the power-on period, for example, the starting time of power-on is 00:00, and the multiple time points may be 00:15, 00:50, and 00: 60.
And S200, determining the luminous power data of each time point in the power-on period based on the initial electrical input power data group and the initial heat dissipation power data group to obtain an initial luminous power data group.
It will be appreciated that the difference between the electrical input power and the thermal dissipation power data is equal to the luminous power. Each time point in the power-on period has a group of initial electrical input power and initial heat dissipation power data, so that each time point in the power-on period has a luminous power data. The initial light emitting power data group is light emitting power data of a plurality of time points in the power-on period.
And S300, if the light-emitting diode is in a steady state stage, acquiring electrical input power data and heat dissipation power data within a preset time length to obtain a steady-state electrical input power data group and a steady-state heat dissipation power data group.
It is understood that the led enters the steady state stage, which is generally a long-term processing steady state stage, and therefore, it is necessary to obtain the electrical input power data and the thermal dissipation power data within the preset time period when the led is in the steady state stage. Specifically, the electrical input power data and the thermal dissipation power data at a plurality of time points within the preset time period are acquired. The plurality of time points may be a plurality of time points set at equal intervals in the steady-state phase, for example, one time point in the steady-state phase is regarded as a starting time point 00:00, and the plurality of time points may be 00:15, 00:30, and 00: 45. The multiple time points may also be multiple time points set at unequal intervals in the steady state phase, for example, a certain time in the steady state phase is defined as 00:00, and the multiple time points may be 00:15, 00:50, or 00: 60.
And S400, determining the light emitting power data of a plurality of time points in the preset time length based on the steady-state electrical input power data group and the steady-state heat dissipation power data group to obtain a steady-state light emitting power data group.
It will be appreciated that the difference between the electrical input power and the thermal dissipation power data is equal to the luminous power. Each time point in the preset time period has a group of data of steady-state electric input power and steady-state heat dissipation power, so that each time point in the preset time period has a piece of data of luminous power. And the steady-state luminous power data group is luminous power data of a plurality of time points in the preset duration.
And S500, evaluating the luminous efficacy of the light-emitting diode according to the initial luminous power data set and the steady-state luminous power data set.
It is understood that a graph with respect to the initial light emission power data set may be generated with the initial light emission power data set and the time corresponding to the initial light emission power data set, and the horizontal axis of the graph is time and the vertical axis is initial light emission power data. Similarly, a graph with respect to the steady-state light emission power data set may be generated with time corresponding to the steady-state light emission power data set and the horizontal axis of the graph is time, and the vertical axis is steady-state light emission power data. If the graph relating to the initial luminous power data set and the graph relating to the steady-state luminous power data set are placed in the same coordinate system, a comparative analysis can be performed according to the two graphs to evaluate the luminous efficacy of the light-emitting diode.
The lighting effect evaluation method for the lighting device provided by the embodiment obtains the electrical input power data group and the heat dissipation power data group in the power-on period of the light emitting diode, and obtains the initial electrical input power data group and the initial heat dissipation power data group. And determining the luminous power data of each time point in the power-on period based on the initial electrical input power data group and the initial heat dissipation power data group to obtain an initial luminous power data group. And acquiring an electrical input power data group and a heat dissipation power data group when the light-emitting diode is in a steady state stage to obtain the steady state electrical input power data group and the steady state heat dissipation power data group. And determining the luminous power data of a plurality of time points in the preset duration based on the steady-state electrical input power data group and the steady-state heat dissipation power data group to obtain a steady-state luminous power data group. And finally, evaluating the luminous efficacy of the light-emitting diode according to the initial luminous power data set and the steady-state luminous power data set. The lighting device luminous efficacy evaluation method provided by the embodiment judges the luminous efficacy of the light emitting diode based on the electrical input power data and the heat dissipation power data of the light emitting diode, takes the influence of the heat dissipation power data of the light emitting diode on the luminous efficacy into consideration, and can solve the problem that the traditional scheme has large error when judging the luminous efficacy of the LED.
Referring to fig. 2, S100 includes:
s110, obtaining the temperature of the environment where the lighting equipment is located, the temperature of the light-emitting diode substrate and the temperature of the inner surface and the outer surface of the light-emitting diode shell at a plurality of time points in the electrifying period to obtain environment temperature data, light-emitting diode temperature data, inner surface temperature data and outer surface temperature data;
and S120, determining heat dissipation power data of each time point in the power-on period according to the environment temperature data, the light-emitting diode temperature data, the inner surface temperature data and the outer surface temperature data to obtain an initial heat dissipation power data group.
It is understood that a thermal conduction gradient may be formed based on the ambient temperature data, the led temperature data, the inner surface temperature data, and the outer surface temperature data. The led temperature data may be corrected based on the thermal conduction gradient. And then according to the change value of the temperature data of the light-emitting diode in a certain time length and the certain time length, determining the heat dissipation power at the end moment of the certain time length, namely the heat dissipation power at a certain time point in the power-on period. It is understood that the heat dissipation power data at each time point of the power-up period is acquired, resulting in the initial heat dissipation power data set.
Referring to fig. 3, S300 includes:
s310, obtaining the ambient temperature of the lighting equipment at a plurality of time points within the preset time, the temperature of the light-emitting diode substrate, and the internal and external surface temperatures of the light-emitting diode shell to obtain ambient temperature data, light-emitting diode temperature data, internal surface temperature data and external surface temperature data;
and S320, determining heat dissipation power data of each time point in the preset time according to the environment temperature data, the light emitting diode temperature data, the inner surface temperature data and the outer surface temperature data to obtain the steady-state heat dissipation power data set.
It is understood that a thermal conduction gradient may be formed based on the ambient temperature data, the led temperature data, the inner surface temperature data, and the outer surface temperature data. The led temperature data may be corrected based on the thermal conduction gradient. And then determining the heat dissipation power at the end moment of a certain time length, namely the heat dissipation power at a certain time point in the preset time length according to the change value of the temperature data of the light emitting diode in the certain time length and the certain time length. It is understood that the heat dissipation power data at each time point in the preset time period is acquired, and the steady-state heat dissipation power data set is obtained.
Referring to fig. 4, in one embodiment of the present application, S500 includes
S510, acquiring the minimum value of the initial luminous power in the initial luminous power data set to obtain the minimum initial luminous power;
s520, obtaining the average value of all steady-state luminous power data in the steady-state luminous power data group to obtain the average value of the steady-state luminous power;
s530, evaluating the luminous efficacy of the light-emitting diode according to the minimum initial luminous power and the steady-state luminous power average value.
It is to be understood that if a graph is generated with respect to the initial light emission power data set, the steady-state light emission power data set, and time, the graph includes a graph with respect to the initial light emission power data set and time, and a graph with respect to the steady-state light emission power data set and time. And acquiring the minimum value of the initial luminous power data in the curve related to the initial luminous power data group and time to obtain the minimum initial luminous power. And obtaining the average value of the steady-state luminous power in the preset time length in the curve of the steady-state luminous power data group and the time.
In one embodiment, S500 may be a line connecting the minimum initial light emitting power and the average value of the steady state light emitting power in a curve with respect to the initial light emitting power data set and time and a curve with respect to the steady state light emitting power data set and time, and obtaining a slope of the line and a horizontal axis coordinate, i.e., a time coordinate. If the slope is greater than or equal to a preset slope value, the luminous efficiency of the light-emitting diode can be evaluated as luminous efficiency difference. And if the slope is less than or equal to a preset slope value, the luminous efficiency of the light-emitting diode can be evaluated to be normal.
Referring to fig. 5, in an embodiment of the present application, S530 includes:
s531, obtaining a difference value between the minimum initial luminous power and the average value of the steady-state luminous power;
s532, if the difference value is larger than or equal to a preset difference value, evaluating the luminous efficiency of the light-emitting diode as luminous efficiency difference;
and S533, if the difference is smaller than the preset difference, evaluating the luminous efficiency of the light emitting diode to be normal.
The preset difference value can be set according to actual needs, and the method is not limited in the application. And if the difference value is larger than or equal to the preset difference value, evaluating the luminous efficiency of the light-emitting diode as luminous efficiency difference. And if the difference value is smaller than the preset difference value, evaluating the luminous efficiency of the light-emitting diode as normal.
Referring to fig. 6, in an embodiment of the present application, S533 includes:
s534, obtaining a difference value between the difference value and the preset difference value;
s535, if the difference value between the difference value and the preset difference value is larger than or equal to a first preset value, determining that the luminous efficiency of the light-emitting diode is good;
s536, if the difference between the difference and the preset difference is smaller than the first preset value, determining that the light emitting efficiency of the light emitting diode is excellent.
The first preset value can be set according to actual needs, and the application is not limited. And if the difference value between the difference value and the preset difference value is larger than or equal to the first preset value, determining that the luminous efficiency of the light-emitting diode is good. And if the difference value between the difference value and the preset difference value is smaller than the first preset value, determining that the luminous efficiency of the light-emitting diode is excellent.
In an embodiment of the present application, before S300, the method further includes:
s10, taking a certain moment in the electrifying period as an initial moment, and acquiring the temperature difference between the temperature of the substrate of the light-emitting diode at the moment and the temperature of the substrate of the light-emitting diode at the next moment;
and S20, determining that the light emitting diode is in a stable state if the temperature differences are less than or equal to the preset temperature difference within the preset temperature measurement duration.
That is, if the temperature change of the substrate of the light emitting diode is within a preset change range, it may be determined that the light emitting diode is in a steady state stage. At this time, when the light emitting diode is in a steady state stage, the electrical input power data and the thermal dissipation power data within the preset time length can be acquired, and a steady state electrical input power data group and a steady state thermal dissipation power data group are obtained.
Referring to fig. 7, the present application provides an apparatus for evaluating luminous efficacy of a lighting device, comprising:
a first data obtaining module 100, configured to obtain electrical input power data and thermal dissipation power data at multiple time points in a power-on period of a light emitting diode of the lighting device, so as to obtain an initial electrical input power data group and an initial thermal dissipation power data group;
a first calculating module 200, configured to determine, based on the initial electrical input power data set and the initial thermal dissipation power data set, light emitting power data at each time point in the power-up period, to obtain an initial light emitting power data set.
The second data obtaining module 300 is configured to obtain electrical input power data and thermal dissipation power data within a preset time duration to obtain a steady-state electrical input power data set and a steady-state thermal dissipation power data set if the light emitting diode is in a steady-state stage. The second data obtaining module 300 is further configured to obtain the temperature of the environment where the lighting device is located, the temperature of the light emitting diode substrate, and the temperature of the inner surface and the outer surface of the light emitting diode housing at multiple time points in the power-on period, so as to obtain environment temperature data, light emitting diode temperature data, inner surface temperature data, and outer surface temperature data; and determining heat dissipation power data of each time point in the power-on period according to the environment temperature data, the light-emitting diode temperature data, the inner surface temperature data and the outer surface temperature data to obtain an initial heat dissipation power data group.
The second calculation module 400 determines the light emitting power data of a plurality of time points within the preset time length based on the steady-state electrical input power data set and the steady-state heat dissipation power data set to obtain a steady-state light emitting power data set;
an evaluation module 500, configured to evaluate the lighting effect of the light emitting diode according to the initial lighting power data set and the steady-state lighting power data set. The evaluation module 500 is further configured to obtain a minimum value of the initial luminous power in the initial luminous power data set, so as to obtain a minimum initial luminous power; obtaining the average value of all steady-state luminous power data in the steady-state luminous power data group to obtain the average value of the steady-state luminous power; and evaluating the luminous efficacy of the light-emitting diode according to the minimum initial luminous power and the steady-state luminous power average value. The evaluation module 500 is further configured to obtain a difference between the minimum initial lighting power and the average value of the steady-state lighting power; if the difference value is larger than or equal to a preset difference value, evaluating the luminous efficiency of the light-emitting diode as luminous efficiency difference; and if the difference value is smaller than the preset difference value, evaluating the luminous efficiency of the light-emitting diode as normal. The evaluation module 500 is further configured to obtain a difference between the difference and the preset difference; if the difference value between the difference value and the preset difference value is larger than or equal to a first preset value, determining that the luminous efficiency of the light-emitting diode is good; and if the difference value between the difference value and the preset difference value is smaller than the first preset value, determining that the luminous efficiency of the light-emitting diode is excellent.
The structure of the lighting apparatus luminous efficacy evaluation apparatus 10 provided above is shown in fig. 2, and the working principle of the lighting apparatus luminous efficacy evaluation apparatus 10 is as described in the embodiment of the lighting apparatus luminous efficacy evaluation method, which is not described herein again.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 8. The computer device includes a processor, a memory, a network interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a lighting device luminous efficacy evaluation method. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 8 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
acquiring electrical input power data and heat dissipation power data of a plurality of time points in a power-on period of a light-emitting diode of the lighting device to obtain an initial electrical input power data group and an initial heat dissipation power data group;
determining light emitting power data of each time point in the power-on period based on the initial electrical input power data group and the initial heat dissipation power data group to obtain an initial light emitting power data group;
if the light-emitting diode is in a steady state stage, acquiring electrical input power data and heat dissipation power data within a preset time length to obtain a steady state electrical input power data group and a steady state heat dissipation power data group;
determining light-emitting power data of a plurality of time points in the preset time length based on the steady-state electrical input power data group and the steady-state heat dissipation power data group to obtain a steady-state light-emitting power data group;
and evaluating the luminous efficacy of the light-emitting diode according to the initial luminous power data set and the steady-state luminous power data set.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
acquiring the temperature of the environment where the lighting equipment is located, the temperature of the light-emitting diode substrate and the temperature of the inner surface and the outer surface of the light-emitting diode shell at a plurality of time points in the electrifying period to obtain environment temperature data, light-emitting diode temperature data, inner surface temperature data and outer surface temperature data;
and determining heat dissipation power data of each time point in the power-on period according to the environment temperature data, the light-emitting diode temperature data, the inner surface temperature data and the outer surface temperature data to obtain an initial heat dissipation power data group.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
obtaining the temperature of the environment where the lighting equipment is located, the temperature of the light-emitting diode substrate and the temperature of the inner surface and the outer surface of the light-emitting diode shell at a plurality of time points within the preset time length to obtain environment temperature data, light-emitting diode temperature data, inner surface temperature data and outer surface temperature data;
and determining the heat dissipation power data of each time point in the preset time according to the environment temperature data, the light-emitting diode temperature data, the inner surface temperature data and the outer surface temperature data to obtain the steady-state heat dissipation power data group.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
acquiring the minimum value of the initial luminous power in the initial luminous power data set to obtain the minimum initial luminous power;
obtaining the average value of all steady-state luminous power data in the steady-state luminous power data group to obtain the average value of the steady-state luminous power;
and evaluating the luminous efficacy of the light-emitting diode according to the minimum initial luminous power and the steady-state luminous power average value.
In one embodiment, a computer device is provided, comprising a memory having a computer program stored therein and a processor that when executing the computer program performs the steps of:
obtaining the difference value between the minimum initial luminous power and the steady-state luminous power average value;
if the difference value is larger than or equal to a preset difference value, evaluating the luminous efficiency of the light-emitting diode as luminous efficiency difference;
and if the difference value is smaller than the preset difference value, evaluating the luminous efficiency of the light-emitting diode as normal.
In one embodiment, a computer device is provided, comprising a memory having a computer program stored therein and a processor that when executing the computer program performs the steps of:
acquiring a difference value between the difference value and the preset difference value;
if the difference value between the difference value and the preset difference value is larger than or equal to a first preset value, determining that the luminous efficiency of the light-emitting diode is good;
and if the difference value between the difference value and the preset difference value is smaller than the first preset value, determining that the luminous efficiency of the light-emitting diode is excellent.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
taking a certain moment in the electrifying period as an initial moment, and acquiring the temperature difference between the temperature of the substrate of the light-emitting diode at the moment and the temperature of the substrate of the light-emitting diode at the next moment;
and within a preset temperature measurement duration, if the temperature differences are less than or equal to a preset temperature difference, determining that the light emitting diode is in a steady state stage.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A lighting device luminous efficacy evaluation method is characterized by comprising the following steps:
acquiring electrical input power data and thermal dissipation power data of a plurality of time points in a power-on period of a light-emitting diode of the lighting device to obtain an initial electrical input power data group and an initial thermal dissipation power data group;
determining light emitting power data of each time point in the power-on period based on the initial electrical input power data group and the initial heat dissipation power data group to obtain an initial light emitting power data group;
if the light emitting diode is in a steady state stage, acquiring electric input power data and heat dissipation power data within a preset time length to obtain a steady state electric input power data group and a steady state heat dissipation power data group;
determining light-emitting power data of a plurality of time points in the preset time length based on the steady-state electrical input power data group and the steady-state heat dissipation power data group to obtain a steady-state light-emitting power data group;
acquiring the minimum value of the initial luminous power in the initial luminous power data set to obtain the minimum initial luminous power;
obtaining the average value of all steady-state luminous power data in the steady-state luminous power data group to obtain the average value of the steady-state luminous power;
and evaluating the luminous efficacy of the light-emitting diode according to the minimum initial luminous power and the steady-state luminous power average value.
2. The method of claim 1, wherein obtaining electrical input power data and thermal dissipation power data at a plurality of time points during a power-up period of light emitting diodes of the lighting device, and obtaining an initial electrical input power data set and an initial thermal dissipation power data set comprises:
acquiring the temperature of the environment where the lighting equipment is located, the temperature of the light-emitting diode substrate and the temperature of the inner surface and the outer surface of the light-emitting diode shell at a plurality of time points in the electrifying period to obtain environment temperature data, light-emitting diode temperature data, inner surface temperature data and outer surface temperature data;
and determining heat dissipation power data of each time point in the power-on period according to the environment temperature data, the light-emitting diode temperature data, the inner surface temperature data and the outer surface temperature data to obtain an initial heat dissipation power data group.
3. The method of claim 1, wherein if the light emitting diode is in a steady state stage, acquiring the electrical input power data and the thermal dissipation power data within a preset time period, and obtaining a steady state electrical input power data set and a steady state thermal dissipation power data set comprises:
obtaining the temperature of the environment where the lighting equipment is located, the temperature of the light-emitting diode substrate and the temperature of the inner surface and the outer surface of the light-emitting diode shell at a plurality of time points within the preset time length to obtain environment temperature data, light-emitting diode temperature data, inner surface temperature data and outer surface temperature data;
and determining the heat dissipation power data of each time point in the preset time according to the environment temperature data, the light-emitting diode temperature data, the inner surface temperature data and the outer surface temperature data to obtain the steady-state heat dissipation power data group.
4. The method of claim 1, wherein said evaluating a luminous efficacy of said light emitting diode based on said minimum initial luminous power and said steady state luminous power average comprises:
obtaining the difference value between the minimum initial luminous power and the steady-state luminous power average value;
if the difference value is larger than or equal to a preset difference value, evaluating the luminous efficiency of the light-emitting diode as luminous efficiency difference;
and if the difference value is smaller than the preset difference value, evaluating the luminous efficiency of the light-emitting diode as normal.
5. The method of claim 4, wherein if the difference is smaller than the predetermined difference, the luminous efficacy of the LED is evaluated as normal, and the method further comprises:
acquiring a difference value between the difference value and the preset difference value;
if the difference value between the difference value and the preset difference value is larger than or equal to a first preset value, determining that the luminous efficiency of the light-emitting diode is good;
and if the difference value between the difference value and the preset difference value is smaller than the first preset value, determining that the luminous efficiency of the light-emitting diode is excellent.
6. The method of claim 1, wherein if the led is in a steady state, the method further comprises:
taking a certain moment in the electrifying period as an initial moment, and acquiring the temperature difference between the temperature of the substrate of the light-emitting diode at the moment and the temperature of the substrate of the light-emitting diode at the next moment;
and within a preset temperature measurement duration, if the temperature differences are less than or equal to a preset temperature difference, determining that the light emitting diode is in a steady state stage.
7. An illumination device luminous efficacy evaluation apparatus characterized by comprising:
the first data acquisition module is used for acquiring electrical input power data and heat dissipation power data of a plurality of time points in a power-on period of a light-emitting diode of the lighting device to obtain an initial electrical input power data group and an initial heat dissipation power data group;
a first calculation module, configured to determine, based on the initial electrical input power data set and the initial thermal dissipation power data set, light emitting power data at each time point in the power-up period, to obtain an initial light emitting power data set;
the second data acquisition module is used for acquiring electrical input power data and heat dissipation power data within a preset time length if the light-emitting diode is in a steady state stage to obtain a steady state electrical input power data group and a steady state heat dissipation power data group;
the second calculation module is used for determining the luminous power data of a plurality of time points in the preset duration based on the steady-state electrical input power data set and the steady-state heat dissipation power data set to obtain a steady-state luminous power data set;
the evaluation module is used for obtaining the minimum value of the initial luminous power in the initial luminous power data set to obtain the minimum initial luminous power; obtaining the average value of all steady-state luminous power data in the steady-state luminous power data group to obtain the average value of the steady-state luminous power; and evaluating the luminous efficacy of the light-emitting diode according to the minimum initial luminous power and the steady-state luminous power average value.
8. A computer device comprising a memory and a processor, the memory having stored thereon a computer program, wherein the computer program, when executed by the processor, causes the processor to perform the steps of the method according to any one of claims 1 to 6.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 6.
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Address after: Building A, B, C, and D, Industrial Park, No. 10 Huanping Road, Gaoqiao Community, Pingdi Street, Longgang District, Shenzhen City, Guangdong Province, 518000 Patentee after: Shenzhen Yufu Lighting Co.,Ltd. Country or region after: China Address before: Buildings a, B, C and D, No. 10, huanping Road, Gaoqiao community, Pingdi street, Longgang District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Eastfield Lighting Co.,Ltd. Country or region before: China |