WO2020209453A1 - Cutoff-type led street-lighting apparatus integrated with power converter - Google Patents

Abstract

A cutoff-type LED street-lighting apparatus integrated with a power converter is provided. The cutoff-type LED street-lighting apparatus integrated with a power converter comprises: an LED module for emitting light by using a plurality of LED devices; a memory for storing a first mapping table in which the illuminance of the LED module is mapped by time interval; a power control unit for checking the illuminance mapped to a current time from the first mapping table when a first dimming control mode of controlling dimming according to time is set, generating and transmitting a dimming control signal for controlling the LED module in order to emit light at the checked illuminance; and a power supply unit which comprises a main power source unit for supplying main power to the LED module and an auxiliary power source unit for supplying auxiliary power by being switched when an abnormality occurs in the power supply of the main power source unit, and which adjusts an output voltage for driving the LED module, according to the dimming control signal received from the power control unit, so as to supply power to the LED module.

Description

Power converter integrated cut-off type LED road lighting device

The present invention relates to a power converter-integrated cut-off type LED road lighting device, and more particularly, a power converter integrated cut-off type capable of smoothly supplying power by employing a dual converter and variably adjusting the illuminance according to the surrounding environment. It relates to an LED road lighting device.

The demand for road lighting using LED (Light-Emitting Diode) is increasing around the world, and it is necessary to preoccupy the global market by developing high-quality lighting demands of advanced countries and lighting suitable for middle and poorly developed countries.

In particular, in the case of countries where power supply is insufficient, research and commercialization of products with relatively low power consumption while improving illumination performance and durability in consideration of the country's situation are required.

However, conventionally, it is practically difficult to stably maintain the operation of road lighting in a situation where power conditions are not good by applying road lighting without considering the lack of power supply, and thus, it is difficult to actually commercialize road lighting.

In order to solve the above-described problem, the technical problem to be achieved by the present invention is to supply dual mode power to maintain stable operation even in an environment where power supply is unstable, and a power converter integrated cutoff capable of dimming control in consideration of illuminance. It is to present a type LED road lighting device.

The problem of the present invention is not limited to those mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

As a means for solving the above-described technical problem, according to an embodiment of the present invention, a power converter integrated cut-off type LED road lighting device includes an LED module that emits light using a plurality of LED elements; A memory for storing a first mapping table in which the illuminance of the LED module for each time period is mapped; When the first dimming control mode, which controls dimming according to time, is set, the illuminance mapped to the current time is checked in the first mapping table, and a dimming control signal is generated to cause the LED module to emit light with the determined illuminance. A power control unit for transmitting; And a main power supply for supplying main power to the LED module, and an auxiliary power supply for supplying auxiliary power by switching when a power supply failure of the main power supply occurs, and using at least one of the main power supply and the auxiliary power supply, the It may include; a power supply unit for supplying power to the LED module by adjusting the output voltage driving the LED module according to the dimming control signal received from the power control unit.

One or more LED illuminance sensing units for sensing the illuminance (hereinafter referred to as'LED illuminance') of the LED module; And at least one road illuminance sensing unit installed at the bottom of the pole where the LED module is installed to sense the illuminance around the road, wherein the power control unit interlocks with the difference in illuminance to perform dimming control. 2 When the dimming control mode is set, an illuminance percentage difference value may be calculated from the difference between the LED illuminance and the road illuminance, and dimming control may be variably performed according to the calculated illuminance percentage difference value.

The at least one road illuminance sensing unit may be installed at a position within 1 meter from the ground in order to sense illuminance caused by a vehicle running on a road and an environment around the road.

In the memory, a second mapping table in which the illuminance of the LED module for each illuminance percentage difference value is mapped is further stored, and the power control unit checks the illuminance mapped to the calculated illuminance percentage in the second mapping table, A dimming control signal for causing the LED module to emit light with the checked illuminance may be generated and transmitted to the power supply unit.

An LED module driving unit for driving the LED module so that the LED module rotates in a plurality of directions including the top, bottom, left and right; A light distribution measuring unit that measures light distribution of the LED module whenever the LED module rotates in a plurality of directions; And when a cut-off control mode that controls illuminance according to the illumination illuminance angle is set, the optimal rotation direction and cutoff of the LED module are determined based on the measured light distribution, and the LED module rotates in the optimal rotation direction. Generates a driving control signal for generating and transmits it to the LED module driver, generates a cut-off control signal for variably adjusting the illuminance of the LED module according to the lighting vertical angle of the LED module, and transmits it to the power supply unit 220 A cutoff control unit; wherein the LED module driving unit drives the LED module according to the driving control signal to rotate in the optimum rotation direction, and the power supply unit 220 controls the LED module according to the cutoff control signal. The output voltage to be driven can be adjusted and supplied to the LED module.

The cut-off control unit may determine a position at which the maximum light distribution is measured among light distributions measured each time the LED module rotates in a plurality of directions as the optimal rotation direction.

The cut-off control unit may control the LED module driving unit and the light distribution measuring unit to measure light distribution by rotating the LED module in a plurality of directions according to a predetermined period.

In the memory, a third mapping table to which the optimal rotation direction of the LED module for each time is mapped is further stored, and the cut-off control unit checks the optimal rotation direction mapped to the current time in the third mapping table, and the identified A driving control signal for rotating in an optimal rotation direction may be generated and transmitted to the LED module driver.

The LED module may be rotated in a plurality of directions including the top, bottom, left and right by a bent structure.

On the other hand, according to another embodiment of the present invention, a power converter integrated cut-off type LED road lighting device includes: an LED module that emits light using a plurality of LED elements and is rotatable in a plurality of directions including vertically, horizontally and horizontally; A power supply for supplying power to the LED module; An LED module driving unit for driving the LED module so that the LED module rotates in a plurality of directions including the top, bottom, left and right; A light distribution measuring unit that measures light distribution of the LED module whenever the LED module rotates in a plurality of directions; And when a cut-off control mode that controls illuminance according to the illumination illuminance angle is set, the optimal rotation direction and cutoff of the LED module are determined based on the measured light distribution, and the LED module rotates in the optimal rotation direction. A cut-off control unit generating a driving control signal for generating a driving control signal and transmitting it to the LED module driving unit, generating a cut-off control signal for variably adjusting the illuminance of the LED module according to the lighting vertical angle of the LED module, and transmitting it to the power supply unit; Including, wherein the LED module driver drives the LED module according to the driving control signal to rotate in the optimal rotation direction, and the power supply unit adjusts the output voltage driving the LED module according to the cutoff control signal It can be supplied to the LED module.

The cut-off control unit may determine a position at which the maximum light distribution is measured among light distributions measured each time the LED module rotates in a plurality of directions as the optimal rotation direction.

The power supply unit may include a main power supply supplying main power to the LED module; And a power supply unit including an auxiliary power supply unit that is switched to supply auxiliary power when an abnormal power supply of the main power unit occurs.

According to the present invention, there is an effect of supplying power in a dual mode to maintain stable operation even in an environment in which power supply is unstable, and dimming control in consideration of illuminance.

In addition, according to the present invention, it is possible to perform interlocking dimming control using the difference of the illuminance value sensed at various locations of the streetlight by comparing the difference in illuminance of the person near the road with the illuminance near the LED lighting is installed, whereby the surrounding environment It can adaptively control dimming according to (time, traffic volume, road illumination, etc.).

In particular, according to the present invention, the effects of the present invention are not limited to those mentioned above, and other effects not mentioned by staying in the converter-integrated high-performance long-life LED road lighting in consideration of the power supply and installation environment of each country are as follows. It will be able to be clearly understood by those skilled in the art from the description of.

1 is a block diagram showing a first power converter integrated cut-off type LED road lighting device according to an embodiment of the present invention;

2 is a diagram schematically showing an exploded perspective view of an LED module and a power supply unit;

3 is a view for explaining another example of the main power supply and the auxiliary power supply;

4 is a schematic diagram of a cut-off type LED road lighting device with an LED illuminance sensing unit and a road illuminance sensing unit attached thereto,

5 is a block diagram showing a second power converter integrated cut-off type LED road lighting device according to another embodiment of the present invention;

6 is a diagram schematically showing the structure of the LED module shown in FIG. 5;

7 is a block diagram showing a third power converter integrated cut-off type LED road lighting device according to another embodiment of the present invention;

[Amendment 24.10.2019 pursuant to Rule 91]
8 to 10 are flowcharts schematically showing test methods of a third power converter integrated cut-off type LED road lighting device according to an embodiment of the present invention, and FIG. 11 is a flowchart illustrating an angular standard of cut-off classification of a luminaire It is a drawing for.

The above objects, other objects, features, and advantages of the present invention will be easily understood through the following preferred embodiments related to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

In the present specification, when a component is referred to as being on another component, it means that it may be formed directly on the other component or that a third component may be interposed between them. In addition, in the drawings, the thickness of the components is exaggerated for effective description of the technical content.

In the present specification, when terms such as first and second are used to describe components, these components should not be limited by these terms. These terms are only used to distinguish one component from another component. The embodiments described and illustrated herein also include complementary embodiments thereof.

Where an element, component, device, or system is stated to include a program or a component made of software, the element, component, device, or system is the execution or operation of the program or software, even if not explicitly stated. It should be understood to include hardware (for example, memory, CPU, etc.) or other programs or software (for example, a driver required to run an operating system or hardware).

In addition, it should be understood that an element (or component) may be implemented in software, hardware, or any form of software and hardware, unless otherwise specified in the implementation of any element (or component).

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the specific embodiments below, a number of specific contents have been prepared to explain the invention in more detail and to aid understanding. However, readers who have knowledge in this field to the extent that they can understand the present invention can recognize that it can be used without these various specific contents.

Each configuration of the power converter-integrated cut-off type LED road lighting devices 100, 200, and 300 shown in FIGS. 1, 4, and 7 indicates that they can be functionally and logically separated, and each configuration must be The average expert in the technical field of the present invention can easily infer that this does not mean that it is classified as a separate physical device or written as a separate code.

In addition, in this specification, a module may mean a functional and structural combination of hardware for performing the technical idea of the present invention and software for driving the hardware. For example, the module may mean a predetermined code and a logical unit of hardware resources for executing the predetermined code, and does not necessarily mean a physically connected code or a single type of hardware. It can be easily inferred from the average expert in the technical field of

A program for implementing the power converter integrated cut-off type LED road lighting devices 100, 200, and 300 may be installed in a predetermined data processing device to implement the technical idea of the present invention.

1 is a block diagram showing a first power converter integrated cut-off type LED road lighting device 100 according to an embodiment of the present invention.

The first LED road lighting device 100 shown in FIG. 1 is a device for a vehicle driving on a road, and referring to FIG. 1, a first power converter integrated cut-off type LED road lighting device according to an embodiment of the present invention 100 includes an LED module 110, a power supply unit 120, an LED illuminance sensing unit 130, a road illuminance sensing unit 140, a memory 150, a power control unit 160 and a communication unit 170. I can.

The LED module 110 may emit light according to the variably controlled illuminance using a plurality of LED elements. The LED module 110 may include an LED driver (not shown) that drives the LED module 110 according to a control signal from the power control unit 160. The LED module 110 emits light by variably adjusting the illuminance according to the power input from the power supply unit 120.

The power supply unit 120 is a converter or power supply device that supplies power to the LED module 110. For example, the power supply unit 120 may be a stop value that receives input power 110 to 220V as an input, converts it into direct current (12/24/36V, etc.) and outputs it. When the first LED road lighting device 100 is installed in an area where the power situation is unstable, the power supply unit 120 may consider 85V to 253V, that is, approximately 72V to 290V, which can consider the power operating range up to ±15% of the reference range. It can have an improved structure to work.

In addition, the power supply unit 120 is a 100 watt-class dual converter, the main power unit 121 that supplies main power to the LED module 110 and the main power unit 121 is switched to supply auxiliary power when an abnormal power supply occurs. Including the auxiliary power supply unit 122, and using at least one of the main power supply unit 121 and the auxiliary power supply unit 122, the output for driving the LED module 110 according to the dimming control signal received from the power control unit 160 The voltage may be adjusted to supply power to the LED module 110. Accordingly, the LED module 110 may emit light corresponding to the adjusted illuminance by the output voltage adjusted according to the dimming control signal.

2 is a schematic diagram showing an exploded perspective view of the LED module 110 and the power supply 120.

Referring to FIG. 2, the LED module 110 includes a frame 111, a reflector 112, an LED lamp 113, a bracket 114, and a diffusion plate 115. Further, the power supply unit 120 includes a main power supply unit 121 and an auxiliary power supply unit 122. The main power supply unit 121 may be a general Switching Mode Power Supply (SMPS) or a battery that supplies power through a switching operation. The operation of the LED module 110 and the power supply unit 120 shown in FIGS. 2 and 3 is described in detail in the document of Patent Registration No. 10-1822082 (2018.01.19), and thus a detailed description thereof will be omitted. However, the shape of the LED module 110 is not limited to a flat type, and may have various shapes according to road conditions, and may be formed integrally with the power supply unit 120 or as a separate type as described above.

3 is a view for explaining another example of the main power supply unit 121 and the auxiliary power supply unit 122.

Referring to FIG. 3, the main power unit 121 and the auxiliary power unit 122 are electrically connected by a connector 123 to supply power to the LED module 110, and the life of the main power unit 121 is over When an abnormality occurs, power is supplied from the auxiliary power supply unit 122 and the auxiliary power supply unit 122 is replaceable, so that maintenance is easy and the life of the product can be increased.

The power supply unit 120 shown in FIGS. 2 and 3 is a converter to which the SMPS output capacitor automatic ablation system is applied, and one of the things that greatly affects the life of the LED lamp 113 is an electrolytic capacitor. In the present invention, the lifespan of the LED lamp 113 may be increased by applying a heat dissipation structure using a carbon material to the LED module 110 so that the electrolytic capacitor of the auxiliary power supply unit 122 receives the least effect of heat. By applying a composite material to which a carbon material is applied or a composite material to which a carbon material and a polymer material is applied to the cover or case of the LED module 110, heat dissipation may be increased, and as a result, the influence of heat applied to the electrolytic capacitor may be reduced.

The LED illuminance sensing unit 130 senses the illuminance (hereinafter, referred to as'LED illuminance') of the LED module 110, and may be provided in one or more of the LED modules 110.

The road illuminance sensing unit 140 is installed at the lower end of the pole 10 on which the LED module 110 is installed to sense the illuminance around the road, and one or more may be provided at the lower end of the pole 10.

4 is a schematic diagram of the first LED road lighting device 100 to which the LED illuminance sensing unit 130 and the road illuminance sensing unit 140 are attached.

Referring to FIG. 4, the LED illuminance sensing unit 130 is installed on the case of the LED module 110, but this is, for example, a side surface or a lower portion of the LED module 110. In addition, one or more road illuminance sensing units 140 may be installed at a position within a set height (D) from the ground to sense illuminance due to a vehicle running on a road and an environment around the road, and the height (D) is for example For 1 meter this is changeable. In addition, the height (D) may also vary according to the height of the LED module 110 is installed.

In addition, when there are a plurality of road illuminance sensing units 140, the plurality of road illuminance sensing units 140 may be provided at different heights within the height D.

The memory 150 may include volatile memory and/or nonvolatile memory. In the memory 150, for example, in order to implement and/or provide an operation, function, etc. provided by the first LED road lighting device 100, commands or data related to the components 110 to 170, one or more programs And/or software, an operating system, and the like may be stored.

The program stored in the memory 150 may include a currently set mode among the first dimming control mode and the second dimming control mode, and a dimming control program for dimming control of the LED module 110 according to the currently set mode. The first dimming control mode is a mode for dimming the LED module 110 according to time, and the second dimming control mode is a mode for dimming the LED module 110 according to the difference in illuminance of two or more illuminance sensors.

Mode selection may be designated by an administrator through wireless communication with the communication unit 170 or may be directly designated by an administrator using an operation panel (not shown) installed in the first LED road lighting device 100.

In addition, the memory 150 includes a first mapping table to which the illuminance level of the LED module 110 for each time period is mapped, and a second mapping table to which the illuminance level and status information of the LED module 110 for each illuminance percentage difference value are mapped. Can be saved. The state information includes information on whether to maintain the current illumination of the LED module 110 or to switch to a state in which dimming control is prepared, or whether dimming control is started.

In addition, the memory 150 may store an illuminance mapping table in which the brightness of each illuminance level of the LED module 110 is mapped. [Table 1] is an example of an illuminance mapping table.

Illuminance level	brightness	Illuminance level	brightness
0	Bright 100%	5	Bright 50%
One	Bright 10%	6	Bright 60%
2	Bright 20%	7	Bright 70%
3	Bright 30%	8	Bright 80%
4	Bright 40%	9	Bright 90%

Bright 100% in Table 1 means the maximum brightness of the LED module 110. In addition, in the memory 150, the LED illuminance sensing unit 130 and the road illuminance sensing unit 140 periodically sense the LED illuminance and the road illuminance may be accumulated and stored together with the sensed time. The power control unit 160 One or more programs stored in the first LED road lighting device 100 are executed to control the overall operation of the first LED road lighting device 100.

First, the power control unit 160 tests the first LED road lighting device 100 according to a set dual converter operating procedure, and then may be programmed and operated according to the site where the first LED road lighting device 100 is installed.

The operation procedure of the dual converter can be programmed to turn on and off for 24 hours, and manual control is also possible by the intervention of the administrator. The operation procedure of the dual converter, that is, the 24-hour cycle control procedure, is, for example, '100W, 5Hrs → 50W, 4Hrs → 100W, 3Hrs → OFF 12Hrs'. This is when 6 pm as the starting point, the LED module 110 controls the illumination with 100W of power corresponding to the maximum brightness for 5 hours from 6 pm, and then 50W for 3 hours at night when vehicle movement is less. It is a cycle that controls the illumination with the power of and then controls the illumination with the power of 100W again for 3 hours in the morning, and does not supply power to the LED module 110 from morning to day (that is, until 6 PM). .

Hereinafter, a case where the first LED road lighting device 100 is installed on the pole 10 after the test is completed and is actually applied in the field will be described.

When the first dimming control mode in which dimming control is performed according to time is set, the power control unit 160 checks the illuminance mapped to the current time checked by a timer (not shown) in the first mapping table, and the confirmed illuminance is the LED. A dimming control signal for causing the module 110 to emit light may be generated and transmitted to the power supply unit 120.

In addition, when the second dimming control mode that performs dimming control in conjunction with the difference in illuminance is set, the power control unit 160 calculates a difference in illuminance percentage from the difference between the sensed LED illuminance and the road illuminance, and calculates the calculated illuminance percentage difference. A dimming control signal for performing dimming control variably according to a value may be generated and transmitted to the power supply unit 120.

The power control unit 160 may deactivate the second dimming control mode during a time set by the administrator as unnecessary operation of the LED module 110. Accordingly, the power control unit may perform dimming control by calculating a difference in illuminance percentage only while the LED module 110 is activated and emits light.

When the second dimming control mode is described in detail, as shown in FIG. 4, for the second dimming control mode, the LED illuminance sensing unit 130 and the road illuminance sensing unit 140 are installed at different positions, and the power control unit ( 160) may perform interlocking dimming control by using the difference between the illuminance values sensed at various locations. The power control unit 160 reads the LED illuminances accumulated and stored in the memory 150 to calculate an average value (hereinafter referred to as'LED illuminance average value'), and calculates the average value of the road illuminances (hereinafter referred to as'road illuminance average value'). Can be calculated. In this case, the power control unit 160 may read the illuminances sensed in a time zone (for example, a time group to which the current time belongs) among illuminances accumulated and stored in the memory 150. For example, if the current time is 7:00 pm, the power control unit 160 reads the sensed LED luminances and road luminances from ‘5 pm to 7 pm’, which is a time group associated with 7:00 pm, and calculates an average value. can do.

The power control unit 160 calculates an illuminance difference value Diff(L) using [Equation 1].

Then, the power control unit 160 calculates the illuminance percentage difference value using [Equation 2].

When the illuminance percentage difference value is calculated by [Equation 2], the power control unit 160 checks the illuminance mapped to the calculated illuminance percentage difference value from the second mapping table, and the LED module 110 is A dimming control signal for emitting light may be generated and transmitted to the power supply unit 120.

For example, if the calculated illuminance percentage difference value is less than 30%, the power control unit 160 maintains the current state of the LED module 110 (level 1), and if it is less than 30% to less than 50%, the dimming control standby ( Ready) enters the state (level 2), and starts dimming control of the LED module 110 when it is over 50% (level 3), and supplies 100% brightness, that is, 100W of power, to produce the maximum brightness. After generating the signal, it may be transmitted to the power supply unit 120. The difference value of the illuminance percentage for starting the dimming control and the illuminance of the LED module 110 accordingly, that is, the value of the second mapping table can be changed according to the surrounding environment.

5 is a block diagram showing a second power converter integrated cut-off type LED road lighting device 200 according to another embodiment of the present invention.

5, a second LED road lighting device 200 according to another embodiment of the present invention includes an LED module 210, a power supply unit 220, an LED module driver 230, a light distribution measurement unit 240, and a memory. 250, a cutoff control unit 260 and a communication unit 270 may be included. The LED module 210, the power supply unit 220, the memory 250, and the communication unit 270 shown in FIG. 5 are the LED module 110, the power supply unit 120, the memory 150, and the Since it is the same as or similar to the communication unit 170, a detailed description will be omitted.

The LED module 210 emits light using a plurality of LED elements, and is rotatable in a number of directions including vertically, horizontally, and horizontally. The LED module 210 emits light by variably adjusting the illuminance according to power input from the power supply unit 220.

6 is a diagram schematically showing the structure of the LED module 210 shown in FIG. 5.

6, the lower case 213 of the LED module 210 is fixed, and the upper case 211 interlocking with the LED lamp adopts a folding structure capable of rotating in a number of directions including up, down, left and right. As a result, it is possible to have a variable wide-angle structure capable of varying the optical range.

The power supply unit 220 may be a dual converter including a main power supply unit 121 and an auxiliary power supply unit 122 supplying power to the LED module 210. The power supply unit 220 may supply power to the LED module 210 by adjusting an output voltage driving the LED module 210 according to the dimming control signal received from the cutoff control unit 260.

The LED module driving unit 230 may control the driving of the LED module 210 so that the LED module 210 moves by a set angle in a plurality of directions including up, down, left and right.

The light distribution measuring unit 240 may measure the light distribution of the LED module 210 whenever the LED module 210 rotates in a plurality of directions.

The memory 250 may store an illuminance control program for controlling the illuminance of the LED module 210 according to the currently set cutoff control mode. The cut-off control mode is a mode for controlling the illuminance according to the illumination illumination angle or the illumination vertical angle, and the manager or the cut-off control unit 260 is installed in each installed place in consideration of the environmental influence around the road where the second LED road lighting device 200 is installed. The angle of bending of the LED module 210 may be set differently.

In addition, the memory 250 may store a third mapping table to which the optimal rotation direction of the LED module 210 by time is mapped. The third mapping table may be obtained by accumulating an optimum rotation direction measured from an LED road lighting device (not shown) installed in an area having a road surrounding environment similar to the area where the second LED road lighting device 200 will be installed.

In addition, in the memory 250, light distribution for each rotation direction of the LED module 210 measured by the light distribution measuring unit 240 may be accumulated and stored.

The cut-off control unit 260 controls the overall operation of the second LED road lighting device 200 by executing one or more programs stored in the first LED road lighting device 100.

For example, when the cut-off control mode for controlling the illuminance according to the illuminance angle is set, the cut-off control unit 260 determines the optimal rotation direction and cutoff of the LED module 210 based on the measured light distribution, and A driving control signal for rotating the LED module 210 in the optimal rotation direction is generated and transmitted to the LED module driver 230, and the illumination intensity of the LED module 210 is variably adjusted according to the vertical angle of illumination of the LED module 210. A cutoff control signal for adjustment may be generated and transmitted to the power supply unit 220. The cut-off control signal is a signal for adjusting the brightness of light, that is, illuminance when the LED module 210 is turned on or off or turned on.

When the optimal rotation direction of the LED module 210 is determined, the cut-off control unit 260 may check the illuminance mapped to the current time in the first mapping table and generate a cut-off control signal corresponding to the determined illuminance.

[Amendment 24.10.2019 pursuant to Rule 91]
Alternatively, the cut-off control unit 260 may generate a cut-off control signal so that the LED module 210 follows the luminous intensity value according to the vertical angle according to the belonging lighting equipment among full cut-off lighting equipment, cut-off lighting equipment, and semi-cut-off lighting equipment. I can. For example, if the LED module 210 is a full cut-off lighting device, the cut-off control unit 260 controls the cut-off control so that the luminous intensity value 0 is measured at a vertical angle of 90 degrees at a position where the LED module 210 is rotated in the optimal rotation direction. Can generate signals. [Table 2] shows the cut-off classification of the lighting fixture, and FIG. 11 shows the angular standard of the cut-off classification. For more detailed description, please refer to https://www.delmarfans.com .

[Amendment 24.10.2019 pursuant to Rule 91]

	Full cutoff	Cutoff	Semi cutoff	Angle criteria for cutoff classification
80 degrees vertical angle	100	100	200	See [Fig. 11]
90 degrees vertical angle	0	25	50

The cut-off control unit 260 may control the LED module driving unit 230 and the light distribution measuring unit 240 to measure light distribution by rotating the LED module 210 in a plurality of directions according to a predetermined period. And, the cut-off control unit ( 260 may determine a position at which the maximum light distribution is measured among light distributions measured each time the LED module 210 rotates in a plurality of directions as an optimal rotation direction. The light distribution is the degree of light spread and may be measured based on the road surface. Accordingly, the cut-off control unit 260 determines how much light spreads from the measured light distribution based on the road surface, and the position where the dark area is the least, that is, , The position at which the maximum light distribution is measured can be determined as the optimal rotation direction. In addition, the cut-off control unit 260 may control the illumination range of the LED module 210 so that the light range is directed toward the center of the road surface but spreads as much as possible using a bending structure in a predetermined optimal rotation direction.

In addition, when an abnormal operation of the light distribution measurement unit 240 occurs, or when the light distribution measurement unit 240 is not used, the cutoff control unit 260 checks the optimal rotation direction mapped to the current time in the third mapping table. , It is possible to generate a driving control signal for rotating in the determined optimal rotation direction and transmit it to the LED module driving unit 230.

The LED module driving unit 230 drives the LED module 210 according to the received driving control signal to rotate in the optimal rotation direction, and the power supply unit 220 is an output voltage driving the LED module 210 according to the cutoff control signal. It can be supplied to the LED module 210 by adjusting.

The second LED road lighting device 200 of the present invention described above measures light distribution while varying the illumination illuminance angle or the vertical illumination angle using the LED module 210 of the bent structure, and is optimal at a position corresponding to the maximum light distribution. You can make light emit with illuminance.

7 is a block diagram illustrating a third power converter integrated cut-off type LED road lighting device 300 according to another embodiment of the present invention.

Referring to FIG. 7, a third LED road lighting device 300 according to another embodiment of the present invention includes an LED module 310, a power supply unit 320, an LED illuminance sensing unit 330, and a road illuminance sensing unit 340. , An LED module driver 350, a light distribution measuring unit 360, a memory 370, a power control unit 380, a cutoff control unit 390, and a communication unit 395.

The LED module 310 shown in FIG. 7, the power supply unit 320, the LED illuminance sensing unit 330, the road illuminance sensing unit 340, the LED module driving unit 350, the light distribution measuring unit 360, and the memory 370 ), the power control unit 380, the cut-off control unit 390 and the communication unit 395 are the LED module 110, the power supply unit 120, the LED illuminance sensing unit 130 described with reference to Figs. 1 and/or 5, The same as the road illumination sensing unit 140, the LED module driving unit 230, the light distribution measuring unit 240, the memory 150, 250, the power control unit 160, the cutoff control unit 260, and the communication unit 170, 270 Since they are similar, detailed descriptions are omitted.

The LED module 310 emits light using a plurality of LED elements, and can be rotated in a number of directions including vertically, horizontally, and vertically.

The power supply 320 may be a dual converter supplying power to the LED module 310.

The LED illuminance sensing unit 330 may sense the illuminance around the LED module 310, and the road illuminance sensing unit 340 may sense the illuminance around the road.

The LED module driving unit 350 may drive the LED module 310 so that the LED module 310 rotates by a rotation angle set in a plurality of directions including up, down, left and right.

The light distribution measurement unit 360 may measure the light distribution of the LED module 310 whenever the LED module 310 rotates in a plurality of directions.

The third LED road lighting device 300 is operable in one of a first dimming control mode, a second dimming control mode, and a cutoff control mode. To this end, a first mapping table, a second mapping table, and a third mapping table may be stored in the memory 370.

When the first dimming control mode is set, the power control unit 380 may generate an illuminance control signal corresponding to the current time, that is, a dimming control signal, using the first mapping table, and transmit it to the power supply unit 320.

When the second dimming control mode is set, the power control unit 380 may generate a dimming control signal using the second mapping table after calculating the illuminance percentage difference value and transmit it to the power supply unit 320.

When the cut-off control mode is set, the cut-off control unit 390 controls the LED module driving unit 350 and the light distribution measurement unit 360 so that the LED module 310 rotates in a plurality of directions and measures light distribution each time it rotates. , A driving control signal for moving the LED module 310 to the position where the maximum light distribution is measured, that is, in the optimal rotation direction, is generated and transmitted to the LED module driver 350, and the type and illumination of the lighting equipment of the LED module 310 A cut-off control signal for variably adjusting the illuminance of the LED module 310 according to the vertical angle may be generated and transmitted to the power supply unit 320.

The power control unit 380 and the cut-off control unit 390 may be implemented as an element such as one or more processors or one microcontrol unit (MCU) to control the operation of the third LED road lighting device 300.

Hereinafter, a method for controlling road lighting of the third LED road lighting device 300 will be described with reference to FIGS. 8 to 10.

8 is a flowchart schematically illustrating a test method of a third LED road lighting device 300 according to an embodiment of the present invention.

* Since the test method shown in FIG. 8 has been described with reference to FIGS. 1 to 4, detailed descriptions are omitted.

Referring to FIG. 8, after turning on the power of the third LED road lighting device 300, a 24-hour cycle control procedure may be set by referring to an illuminance mapping table according to an operation of a manager (S810 and S820). The cycle control procedure may be, for example, a level of 0 for the initial 5 hours, 5 levels for the next 4 hours, 0 levels for the next 3 hours, and power off for the next 12 hours.

The third LED road lighting device 300 checks the brightness corresponding to one level in the illumination mapping table for the initial 5 hours according to the cycle control procedure set in step S920, and the LED module 310 emits light at 100% of the checked brightness. It can be done (S830). For example, the 3rd LED road lighting device 300 may control illumination with a maximum power of 100W for light emission of 100% brightness.

After the initial 5 hours, the third LED road lighting device 300 may check the brightness of 5 levels in the illuminance mapping table, and make the LED module 310 emit light for 4 hours with the confirmed brightness of 50% (S840).

Thereafter, the third LED road lighting apparatus 300 may check the 0 level brightness in the illuminance mapping table, and make the LED module 310 emit light at 100% of the checked brightness (S850).

After that, the power is turned off for 12 hours so that the LED module 310 is turned off (S860).

9 is a flowchart schematically illustrating a road lighting control method corresponding to a second dimming control mode of the third LED road lighting device 300 according to an embodiment of the present invention.

Since the road lighting control method illustrated in FIG. 9 has been described with reference to FIGS. 1 to 4, detailed descriptions will be omitted.

Referring to FIG. 9, when the second dimming control mode is set, the third LED road lighting device 300 initially activates the LED module 310 to emit light with a set illuminance at the current time, and the LED illuminance sensing unit ( 330 and the road illuminance sensing unit 340 may process to sense the LED illuminance and the road illuminance, respectively (S910).

The third LED road lighting device 300 stores the LED illuminance and the road illuminance sensed in step S910 together with the sensed time (S920 and S930).

* The third LED road lighting apparatus 300 repeats steps S910 to S930 until a period set to calculate a difference in illuminance percentage is reached.

When the cycle for calculating the illuminance percentage difference value is reached, the third LED road lighting device 300 calculates the average value of the LED illuminances stored for a certain period and the average value of the road illuminances, and the difference between the illuminance average value using [Equation 1] That is, the illuminance difference value is calculated (S950, S960).

The third LED road lighting device 300 calculates a difference in illuminance percentage according to various locations using the calculated illuminance difference value and [Equation 2] (S970).

The third LED road lighting device 300 may check the illumination or status information mapped to the calculated illumination percentage difference value in the second mapping table, and control the LED module 310 with the checked illumination or status (S980). . In step S980, for example, if the difference in illuminance percentage is 50% or more, the third LED road lighting device 300 checks the illuminance mapped to 50% in the second mapping table to determine level 3, that is, 100% brightness. Handle it so that it can be produced.

10 is a flowchart schematically illustrating a road lighting control method corresponding to a cut-off control mode of the third LED road lighting apparatus 300 according to an embodiment of the present invention.

Since the road lighting control method illustrated in FIG. 10 has been described with reference to FIG. 5, detailed descriptions will be omitted.

Referring to FIG. 10, when the cut-off control mode is set, the third LED road lighting device 300 rotates the LED module 310 at a set angle in a set direction, and then measures and stores light distribution (S1010 and S1020).

The third LED road lighting device 300 repeats steps S1010 to S1020 until the measurement of light distribution in all directions in which the LED module 310 is set to rotate is completed.

When the measurement of light distribution in all directions is completed (S1030-Yes), the third LED road lighting device 300 determines a position at which the maximum light distribution is measured among the plurality of measured light distributions as the optimal rotation direction (S1040).

In addition, the third LED road lighting device 300 may perform cutoff control by rotating the LED module 310 in the optimal rotation direction and variably adjusting the illuminance according to the lighting vertical angle of the rotated LED module 310. (S1050, S1060). In step S1060, for example, the LED module 310 may emit light with an illuminance mapped to the current time.

In addition, when an abnormality occurs in the operation of the light distribution measuring unit 360 (S1070-Yes), the third LED road lighting device 300 checks the optimal rotation direction from the third mapping table, and at the current time from the first mapping table. By checking the mapped illuminance, the rotation direction and illuminance of the LED module 310 may be controlled accordingly (S1080).

In the road lighting control method described with reference to FIGS. 8 to 10, the third LED road lighting device 300 variably adjusts the illuminance of the LED module 310 while the power supply of the main power unit 121 is not smooth. In this case, the sub power supply unit 122 may be used to continuously supply power.

On the other hand, although it has been described and illustrated in connection with a preferred embodiment for illustrating the technical idea of the present invention, the present invention is not limited to the configuration and operation as illustrated and described as described above, and deviates from the scope of the technical idea. It will be appreciated by those skilled in the art that a number of changes and modifications can be made to the present invention. Accordingly, all such appropriate changes, modifications, and equivalents should be considered to be within the scope of the present invention. Therefore, the true technical protection scope of the present invention should be determined by the technical idea of the attached registration claims.

Claims (11)

1. LED module emitting light using a plurality of LED elements;

   A memory for storing a first mapping table in which the illuminance of the LED module for each time period is mapped;

   When the first dimming control mode, which controls dimming according to time, is set, the illuminance mapped to the current time is checked in the first mapping table, and a dimming control signal is generated to cause the LED module to emit light with the determined illuminance. A power control unit for transmitting; And

   A main power supply unit for supplying main power to the LED module, and an auxiliary power unit that is switched to supply auxiliary power when a power supply failure occurs in the main power unit, and the power is supplied by using at least one of the main power unit and the auxiliary power unit. A power converter integrated cut-off type LED road lighting device comprising: a power supply unit for supplying power to the LED module by adjusting an output voltage for driving the LED module according to the dimming control signal received from the control unit.
2. The method of claim 1,

   One or more LED illuminance sensing units for sensing the illuminance (hereinafter referred to as'LED illuminance') of the LED module; And

   One or more road illuminance sensing units installed at the bottom of the pole where the LED module is installed to sense illuminance around the road; further includes,

   The power control unit,

   When the second dimming control mode that performs dimming control in conjunction with the difference in illuminance is set, the illuminance percentage difference value is calculated from the difference between the LED illuminance and the road illuminance, and dimming control is variably performed according to the calculated illuminance percentage difference value. Power converter integrated cut-off type LED road lighting device, characterized in that to perform.
3. The method of claim 2,

   The one or more road illuminance sensing units, power converter integrated cut-off type LED road lighting device, characterized in that installed at a position within 1 meter from the ground to sense the illuminance due to the vehicle running on the road and the environment around the road.
4. The method of claim 1,

   An LED module driving unit for driving the LED module so that the LED module rotates in a plurality of directions including the top, bottom, left and right;

   A light distribution measuring unit that measures light distribution of the LED module whenever the LED module rotates in a plurality of directions; And

   When the cut-off control mode for controlling the illuminance according to the illumination illuminance angle is set, the optimum rotation direction and cutoff of the LED module are determined based on the measured light distribution, and the LED module rotates in the optimum rotation direction. A cut-off that generates a driving control signal to generate and transmits it to the LED module driver, generates a cut-off control signal for variably adjusting the illuminance of the LED module according to the lighting vertical angle of the LED module, and delivers it to the power supply unit 220 It further includes;

   The LED module driver drives the LED module according to the driving control signal to rotate in the optimal rotation direction,

   The power supply unit 220 is a power converter integrated cut-off type LED road lighting device, characterized in that the control output voltage for driving the LED module according to the cut-off control signal is supplied to the LED module.
5. The method of claim 4,

   The cutoff control unit,

   Power converter integrated cut-off type LED road lighting device, characterized in that the position at which the maximum light distribution is measured among the light distributions measured each time the LED module rotates in a plurality of directions is determined as the optimum rotation direction.
6. The method of claim 4,

   The cutoff control unit,

   Power converter integrated cut-off type LED road lighting device, characterized in that controlling the LED module driving unit and the light distribution measuring unit to measure light distribution by rotating the LED module in a plurality of directions according to a predetermined period.
7. The method of claim 4,

   In the memory,

   A third mapping table, in which the optimal rotation direction of the LED module by time is mapped, is stored

   The cutoff control unit,

   Power converter integrated cut-off, characterized in that the optimal rotation direction mapped to the current time is checked in the third mapping table, and a driving control signal for rotating in the identified optimal rotation direction is generated and transmitted to the LED module driving unit. Type LED road lighting device.
8. The method of claim 4,

   The LED module is a power converter integrated cut-off type LED road lighting device, characterized in that rotating in a plurality of directions including the top, bottom, left and right by a bent structure.
9. An LED module that emits light using a plurality of LED elements and is rotatable in a plurality of directions including vertically, horizontally, and vertically;

   A power supply for supplying power to the LED module;

   An LED module driving unit for driving the LED module so that the LED module rotates in a plurality of directions including the top, bottom, left and right;

   A light distribution measuring unit that measures light distribution of the LED module whenever the LED module rotates in a plurality of directions; And

   When the cut-off control mode for controlling the illuminance according to the illumination illuminance angle is set, the optimum rotation direction and cutoff of the LED module are determined based on the measured light distribution, and the LED module rotates in the optimum rotation direction. A cut-off control unit for generating a driving control signal to be transmitted to the LED module driving unit, generating a cut-off control signal for variably adjusting the illuminance of the LED module according to the lighting vertical angle of the LED module, and transmitting it to the power supply unit; Including,

   The LED module driver drives the LED module according to the driving control signal to rotate in the optimal rotation direction,

   The power supply unit power converter integrated cut-off type LED road lighting device, characterized in that for supplying to the LED module by adjusting the output voltage for driving the LED module according to the cut-off control signal.
10. The method of claim 9,

    The cutoff control unit,

    Power converter integrated cut-off type LED road lighting device, characterized in that the position at which the maximum light distribution is measured among the light distributions measured each time the LED module rotates in a plurality of directions is determined as the optimum rotation direction.
11. The method of claim 9,

    The power supply unit,

    A main power supply for supplying main power to the LED module; And

    A power converter integrated cut-off type LED road lighting device comprising a; an auxiliary power unit that is switched to supply auxiliary power when an abnormal power supply of the main power unit occurs.

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