KR20220096412A - Smart power module for traffic light using high power LEDs - Google Patents

Abstract

A power supply device for a high-power LED traffic light head and a power supply method thereof are provided. The optical module rectifying unit rectifies the power supplied from the traffic light controller (hereinafter referred to as 'supply power') and outputs it as power for a high-output LED optical module, and the processing control unit outputs the rectified supply power to the high-output LED optical module to provide high output Controls on/off of the LED optical module, and the loss determining unit determines whether optical output loss of the high-output LED optical module occurs by checking the size of the rectified supply power output to the high-output LED optical module, and the processing control unit includes: On/off is controlled so that a plurality of high-power LED light sources provided in the high-power LED optical module selectively emit light according to the determination result.

Description

Power supply device for high-power LED traffic light head and power supply method thereof {Smart power module for traffic light using high power LEDs}

The present invention relates to a power supply device for a high-output LED traffic light head and a power supply method thereof, and more particularly, to a power supply for a high-output LED traffic light head capable of maintaining the function of a traffic light by turning on a spare light source when a loss occurs in the main light source being turned on It relates to a supply device and a method for supplying power thereto.

DIP (Dual In-line Package) LED traffic lights, which are widely used in traffic lights, are more efficient in terms of cost (energy efficiency) and maintenance, such as low power, low cost, and longer lifespan, compared to incandescent and halogen lamp traffic lights. It is operated as a substitute.

The DIP LED optical module being applied to traffic lights consists of 90 to 200 multi-array LEDs. Therefore, the failure of some of the DIP LED optical modules leads to a failure of the entire array, which lowers the visibility of traffic signals and increases the risk of driver and pedestrian safety.

To prevent this, there is an overseas technology that is designed to automatically report a traffic light failure to the central traffic center through the traffic light controller. is occurring

In addition, in the event of loss of the optical module of a traffic light by more than 30% according to overseas standards, the Lamp Fail function operates and turns off the head of the corresponding traffic light as shown in FIG. It takes time and money before it is put into use, and it is also necessary to prepare a countermeasure against the risk that occurs when the lights are turned off.

Therefore, when more than 30% of the optical module is lost, lamp failure is detected and reported to the central traffic center, and the signal status is delivered to the driver rather than turning off the head of the traffic light. The demand for device function development is increasing.

In addition, since the traffic light does not provide a dimming function (dimming function) for lowering the luminous intensity when operating at night, driving or driving interference due to glare, as well as unnecessary power loss due to this, are disadvantageous.

Domestic Patent Publication No. 10-2010-0137218

The technical problem to be achieved by the present invention in order to solve the above problems is a high-output LED signal head power source that uses a spare light source that can be turned on so that the spare light source replaces the main light source when the Lamp Fail function is set and the main light source is turned off To provide a supply device and a method for supplying power thereto.

In addition, the technical problem to be achieved by the present invention is to determine the optical output loss by using the voltage of the power supplied to the high-output LED optical module, and a power source for a high-power LED signal head using a spare light source that can supply power to the spare light source To provide a supply device and a method for supplying power thereto.

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

As a means for solving the above technical problem, according to an embodiment of the present invention, a power supply for a high-output LED traffic light head rectifies the power supplied from a traffic light controller (hereinafter referred to as 'supply power') to a high-output LED an optical module rectifying unit outputting as a power source for an optical module; a processing control unit outputting the rectified supply power to a high-output LED optical module to control on/off of the high-output LED optical module; and a loss determining unit configured to determine whether an optical output loss of the high-output LED optical module has occurred by checking the size of the rectified supply power output to the high-output LED optical module, wherein the processing control unit includes, the determination of the loss determining unit According to the result, the on-off is controlled so that a plurality of high-power LED light sources provided in the high-power LED optical module selectively emit light.

The high-power LED optical module includes a plurality of main light sources and a plurality of preliminary light sources, and the processing control unit controls to output the rectified supply power to the plurality of main light sources when operating in a normal mode.

When the loss determining unit determines that the voltage output to the plurality of main light sources is equal to or greater than a predetermined reference value, the processing control unit switches to a switching mode and stops the supply power output to the plurality of main light sources and output to the plurality of preliminary light sources.

Further comprising; a voltage detection unit for detecting the voltage of the supply power supplied from the traffic light controller, wherein the processing control unit, the detected voltage is a dimming voltage to operate in the day mode and dimming voltage to operate in the night mode If it is one, it is processed so that the output dimming level of the high-power LED optical module is switched within a predetermined conversion time according to the corresponding dimming voltage.

On the other hand, according to another embodiment of the present invention, the power supply method of the power supply device for the high-output LED traffic light head, (A) the power supply device, the power supplied from the traffic light controller (hereinafter referred to as 'supply power') rectifying; (B) the power supply unit, outputting the supply power rectified in step (A) to the high-output LED optical module to control the on-off of the high-output LED optical module; (C) determining, by the power supply device, whether optical output loss of the high-output LED optical module occurs by checking the size of the rectified supply power output to the high-output LED optical module; and (D) controlling, by the power supply device, on/off so that a plurality of high-power LED light sources provided in the high-power LED optical module selectively emit light according to the determination result of step (C).

The high-power LED optical module includes a plurality of main light sources and a plurality of preliminary light sources, and in step (B), when the power supply device operates in a normal mode, the rectified supply power is applied to the plurality of main light sources. control to output to

(E) when it is determined that the voltage output to the plurality of main light sources in step (C) is greater than or equal to a predetermined reference value, the power supply device switches to a switching mode and outputs to the plurality of main light sources It further includes; stopping the supply power and outputting to the plurality of preliminary light sources.

(F) detecting, by the power supply device, the voltage of the power supply supplied from the traffic light controller; (G) when the power supply device is one of a dimming voltage for operating in a day mode and a dimming voltage for operating in a night mode, the voltage detected in step (F), according to the corresponding dimming voltage, the high-output LED light It processes the output dimming level of the module to be switched within a predetermined conversion time.

According to the present invention, when the Lamp Fail function is set and the main light source is turned off, by turning on the preliminary light source provided around the main light source, signal information can be continuously transmitted to the driver and pedestrian, thereby improving safety.

In addition, according to the present invention, it is possible to accurately and quickly determine whether the loss is caused by determining the optical output loss from the voltage change amount of the power supplied to the high-output LED optical module.

In addition, according to the present invention, by providing a dimming function for lowering the luminosity of a traffic light at night, it is possible to prevent interference with driving and unnecessary power loss due to glare.

Effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a view showing an example of turning off an existing optical module by the Lamp Fail function;
2 is a block diagram showing a power supply for a high-power LED (Light Emitting Diode) traffic light head according to an embodiment of the present invention;
3 is an exploded perspective view showing the structure of a traffic light head using a high-output LED in which a power supply device according to an embodiment of the present invention is installed;
4 is a plan view showing high-power LED light sources arranged on a PCB for a 210mm vehicle traffic light model;
5 is a view showing an example in which the main light sources are turned off and preliminary light sources are turned on by the Lamp Fail function;
6 is a flowchart illustrating a power supply method of a power supply device for a high-output LED traffic light head according to an embodiment of the present invention.

본 발명의 추가적인 목적들, 특징들 및 장점들은 다음의 상세한 설명 및 첨부 도면으로부터 보다 명료하게 이해될 수 있다.

Additional objects, features and advantages of the present invention may be more clearly understood from the following detailed description and accompanying drawings.

Prior to the detailed description of the present invention, the present invention can make various changes and can have various embodiments, and the examples described below and shown in the drawings are not intended to limit the present invention to specific embodiments. No, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

When an element is referred to as being “connected” or “connected” to another element, it is understood that it may be directly connected or connected to the other element, but other elements may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Also, terms such as “…unit” and “…module” described in the specification may mean a unit that processes at least one function or operation.

In addition, in the description with reference to the accompanying drawings, the same components are given the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted. In describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

Hereinafter, specific technical contents to be practiced in the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram illustrating a power supply device 100 for a high-power LED (High Power Light Emitting Diode) traffic light head according to an embodiment of the present invention, and FIG. 3 is a power supply device 100 according to an embodiment of the present invention. It is an exploded perspective view showing the structure of a traffic light head 200 using a high-power LED in which is installed, and FIG. 4 is a plan view showing high-power LED light sources arranged on a PCB for a 210mm vehicle traffic light model.

The power supply device 100 for the high-power LED traffic light head shown in FIG. 2 is provided in the traffic light head 200 of the traffic light shown in FIG. 3 and supplies power supplied through the traffic light controller to the high-output LED optical module 220. do.

Traffic lights can be divided into 9 traffic light models according to their roles.

9 traffic light models include 210mm vehicle red traffic light, 210mm vehicle yellow traffic light, 210mm vehicle green traffic light, 300mm vehicle red traffic light, 300mm vehicle yellow traffic light, 300mm vehicle green traffic light, 300mm vehicle arrow traffic light, 300mm walking green traffic light, 300mm walking red traffic light include 200mm and 300mm are the sizes of the two traffic lights, the pedestrian red traffic light is a red traffic light among the traffic lights installed at the crosswalk to guide pedestrians, and the vehicle red traffic light means a red traffic light among the traffic lights to guide the vehicle.

According to an embodiment of the present invention, the power supply device 100 for the high-power LED traffic light head complies with the power supply standard of the traffic light, and transmits the status information determination through voltage detection and the traffic light failure status information to the traffic light controller, The dimming function is implemented according to the voltage input from the traffic light controller, and the switching function occurs when the output loss of the high-power LED optical module 220 is greater than the preset reference light output loss (as a change in light output, for example, 30%). Visibility and safety for drivers and pedestrians can be increased by allowing the auxiliary light source to emit light. In the present invention, 'light output' refers to the intensity of light emitted by a plurality of high-power LED light sources 223 . The light output may vary depending on the dimming level or failure of one or more of the light sources 223 .

In addition, the risk, maintenance time, and cost can be solved due to the switching function that turns on a spare light source when the traffic light is turned off in a country where the Lamp Fail function is standard.

First, the signal light head 200 provided with the power supply device 100 for the high-output LED signal light head will be briefly described with reference to FIGS. 3 and 4 .

3 and 4, the traffic light head 200 using a high-power LED is a cover 210, a high-power LED optical module 220, a Fresnel lens 230, a cover lens 240, and a rubber ring (250). may include

The cover 210 serves as an overall casing, and a smart power supply device 100 for a traffic light head, a high-power LED optical module 220 and a Fresnel lens 230 are provided, and a cover lens 240 serving as a protective film from the outside. ) may be provided on the outermost side by the rubber ring 250 .

The high-power LED optical module 220 includes a plurality of high-power LED light sources 223 electrically connected to the power supply 100 and a plurality of caps that primarily condense light emitted from the plurality of high-power LED light sources 223 . The lenses 225 may be used to emit light in a different shape or in a different color for each traffic light model.

The high-power LED optical module 220 includes a PCB 221 , a plurality of high-power LED light sources 223 , and a plurality of cap lenses 225 .

The PCB 221 may use a metal substrate to solve the problem of heat generation from a plurality of high-power LED light sources 223 .

The plurality of high-power LED light sources 223 may include main light sources 223a and preliminary light sources 223b. In the normal mode, the main light sources 223a emit light when power is supplied from the power supply device 100 .

When some of the main light sources 223a fail, all of the main light sources 223a are turned off, and the preliminary light sources 223b replace the main light sources and emit light. For example, when an output loss of 30% or more of the light output of the main light sources 223a occurs, all of the main light sources 223a are turned off, and the preliminary light sources 223b may be turned on instead. This is because, when only some of the main light sources 223a are turned on, visibility is lowered, and thus the traffic light does not function.

Also, a Zener diode (not shown) may be connected in parallel to each of the plurality of main light sources 223a and the plurality of preliminary light sources 223b. In this case, when one of the plurality of main light sources 223a fails, the power supplied to the main light source in which the failure occurs is supplied to a zener diode connected in parallel, and the power supply 100 detects the LED forward voltage change due to this. And, when the total change in voltage is greater than or equal to a preset reference change amount (eg, 30%), all of the plurality of main light sources 223a may be turned off, and power may be supplied to the preliminary light sources 223b.

Also, a Zener diode (not shown) may be connected in parallel to the plurality of preliminary light sources 223b. In this case, if one of the plurality of spare light sources 223b fails, the power supplied to the failed spare light source is supplied to the Zener diode connected in parallel instead of being supplied to the other auxiliary light sources connected in series to prevent failure of other spare light sources. can

The plurality of cap lenses 225 may be installed to cover the plurality of high-power LED light sources 223 , respectively, so that light emitted from the plurality of high-power LED light sources 223 may be primarily condensed.

Each of the plurality of cap lenses 225 has a dome-shaped lens unit (not shown) surrounding the high-power LED light sources 223 therein, and a plurality of dome-shaped bottom surfaces formed along the rim and fixedly coupled to the PCB 221 . legs (not shown) of

The Fresnel lens 230 is provided on an upper portion of the PCB 221 to be spaced apart from the plurality of cap lenses 225 , and may secondary condense light output from the plurality of cap lenses 225 .

Among both surfaces of the Fresnel lens 230, the surface in the direction toward the high-power LED optical module 220 is formed with a flat lens surface, and the surface in the direction toward the cover lens 240, which is the direction in which light is emitted, protrudes in multiple stages. A lens surface may be formed to collect light.

The cover lens 240 is a convex lens in which a pattern is formed on an inner surface to prevent a sun phantom phenomenon, which is a glare phenomenon caused by sunlight, and to disperse light output to the outside.

The cover lens 240 is provided on the upper part of the Fresnel lens 230 and the final part of the traffic light head 200 , and is installed on the cover 210 using bolts and then fastened using the rubber ring 250 . can Accordingly, the cover lens 240 can prevent internal contamination and damage caused by the external environment and prevent the aforementioned sun phantom phenomenon by adopting a transparent lens.

Referring back to FIG. 2 , the power supply device 100 for a high-power LED traffic light head according to an embodiment of the present invention includes an optical module rectifying unit 110 , a processing rectifying unit 120 , a voltage detecting unit 130 , and a loss determining unit 140 . and a processing control unit 150 .

Power supplied from the traffic light controller (hereinafter referred to as 'supply power') may be applied to the optical module rectifying unit 110 , the processing rectifying unit 120 , or the voltage detecting unit 130 .

The optical module rectifying unit 110 may rectify the supply power supplied from the traffic light controller and output it as power for the high-output LED optical module 220 . The optical module rectifying unit 110 may be a switching mode power supply (SMPS), and may include a first converter 111 and a current stabilizing unit 113 .

The supply power supplied from the traffic light controller is AC power. The first converter 111 converts input AC power into DC power.

The current stabilizing unit 113 rectifies the DC power so that the current is output at a constant value and outputs the rectified DC power.

The process rectifying unit 120 rectifies the supply power supplied from the traffic light controller and outputs it as power for the process control unit 150 . The process rectifying unit 120 may include a voltage reducing unit 121 , a second converter 123 , and a voltage stabilizing unit 125 .

The voltage reducing unit 121 may be a transformer that reduces the voltage of the input power supply to a voltage of a predetermined level. For example, if the voltage of the input power supply is 220V when operating in the day mode, the voltage reducing unit 121 reduces the voltage from 220V to 12V, and when operating in the night mode, if the voltage of the input power supply is 160V, 160V can be reduced to 7.7V. 220V, 160V, 12V, 7.7V, etc. may be changed according to, for example, a traffic light standard of a country in which a traffic light is installed.

As an example, the traffic light power consumption standards of foreign target countries are 300mm 23W or less and 210mm 14.5W or less in day mode, and 300mm 5-14.5W and 210mm 5-10W in night mode.

The second converter 123 converts the AC voltage (eg, 12V or 7.7V) reduced in the voltage reducing unit 121 into DC power.

The voltage stabilizing unit 125 stably rectifies the DC power input from the second converter 123 to a voltage (eg, 5V) usable by the processing control unit 150 and outputs it to the processing control unit 150 . do. The voltage stabilizer 125 may be a regulator.

The voltage detection unit 130 detects the voltage of the power supply supplied from the traffic light controller, and transmits the detection result to the processing control unit 150 . The detection result of the voltage detection unit 130 is used to determine whether to change the dimming mode.

More specifically, the dimming mode is divided into a day mode and a night mode to reduce power consumption and visibility at night, and is switched according to the supply voltage.

In the day mode, the voltage of the AC power input from the traffic light controller is, for example, 220V, and in the night mode, 160V. Therefore, when the dimming mode is switched from the day mode to the night mode, the input voltage changes from 220V to 160V, and when the dimming mode is switched from the night mode to the day mode, the input voltage changes from 160V to 220V. A dimming function for switching the level of the light output may be implemented.

When the dimming mode is switched, the level of the light output is adjusted according to the change in the magnitude of the voltage input from the traffic light controller, and the time limit (conversion time) until the light output is converted is the memory of the power supply 100 (not shown) may be set. The conversion time may be set within 500 msec, for example.

The loss determining unit 140 may determine whether optical output loss occurs by checking the size of the rectified supply power output from the processing control unit 150 to the high-output LED optical module 220 . The determination result of the loss determination unit 140 is used to switch to the switching mode using the preliminary light source.

In order to determine whether to switch to the switching mode, first, the memory (not shown) contains the normal mode and the magnitude of the voltage supplied to the high-output LED optical module 220 when the day mode or the night mode (hereinafter referred to as 'initial voltage value') ) and a reference value for determining that the lamp fail function should be performed due to loss of light output may be initially set by the administrator.

In addition, the initial voltage value and the reference value are set differently for each day mode and night mode, and may also be set differently according to the nine traffic light models described above.

In addition, the difference between the initial voltage value and the reference value stored in the memory (not shown), that is, the total amount of change in voltage may be set to satisfy the standard change amount for determining whether to perform the Lamp Fail function, and the reference change amount is, for example, , 30%, but this is an example and can be changed according to country-specific standards. Accordingly, the difference between the initial voltage value and the reference value set for each model, normal mode (day mode, night mode), and dimming mode may be set to satisfy the aforementioned reference variation (eg, 30%). In this case, in an embodiment of the present invention, it may be set to perform the Lamp Fail function when the light output loss occurs by 30% or more, and this number is an example and is not limited thereto.

In detail, when the control unit 153 supplies DC power to the main light sources 223a of the high-power LED optical module 220 to emit light, in the normal mode, the main light sources 223a turn to the dimming level corresponding to the DC power. glow The loss determination unit 140 may detect the magnitude of the voltage of the DC power supplied to the high-output LED optical module 220 when there is no main light source having a failure.

The magnitude of the voltage of the DC power supplied to the high-power LED optical module 220, that is, the optical output of the main light sources 2230a, is fed back from the control unit 153 to the loss determination unit 140 and in the loss determination unit 140 can be detected. The loss determining unit 140 generates a flag 0 that means that the high-power LED optical module 220 is normally driven when the detected voltage level is smaller than the reference value set in the memory (not shown) and delivers it to the processing control unit 150 . can

Thereafter, when a failure occurs in one of the plurality of main light sources 223a, DC power supplied to the main light source in which the failure occurs is input to a Zener diode connected in parallel with the main light source in which the failure occurs. The voltage to drive the Zener diode is greater than the voltage required to drive the main light source. Accordingly, the magnitude of the voltage of the DC power supplied from the control unit 153 to the high-power LED optical module 220 increases, and as the number of failed main light sources increases, the magnitude of the voltage increases.

By this operation, the magnitude of the voltage detected by the loss determining unit 140 also increases. The loss determination unit 140 compares the detected voltage with the reference value, and when the detected voltage is equal to or greater than the reference value, generates flag 1 indicating that an abnormality has occurred in the main light sources 223a and transmits it to the processing control unit 150 . have.

The processing control unit 150 outputs the supply power rectified by the optical module rectifying unit 110, that is, the rectified DC power to the high output LED optical module 220 to control the on/off of the high output LED optical module 220. . To this end, the processing control unit 150 includes a processing unit 151 and a control unit 153 .

The processing unit 151 may perform a dimming function of adjusting the dimming level of the light output by switching to a day mode or a night mode according to a change in the voltage detected by the voltage detection unit 130, and may be a CPU (Central Processing Unit). .

More specifically, when the voltage detected by the voltage detection unit 130 is changed to one of a dimming voltage to operate in a day mode and a dimming voltage to operate in a night mode, the high-output LED light according to the corresponding dimming voltage It may instruct the controller 153 to switch the output dimming level to the module 220 within a predetermined conversion time.

The control unit 153 outputs the DC power input from the optical module rectifier 110 to the high-output LED optical module 220 within the conversion time by the command of the processing part 151 to the dimming level of the high-output LED optical module 220 . It is possible to control the high-power LED optical module 220 to switch to the level of the corresponding dimming mode.

Accordingly, the processing unit 151 and the control unit 153, for example, when the voltage corresponding to the night mode is detected by the voltage detection unit 130 while operating in the day mode, it is converted to the night mode within the conversion time to correspond to the night mode. The dimming voltage may be supplied to the high-power LED optical module 220 so that the high-power LED optical module 220 emits light at a dimming level corresponding to the night mode.

In addition, the processing unit 151 may instruct the control unit 153 to selectively emit light from a plurality of high-power LED light sources 223 provided in the high-power LED optical module 220 according to the determination result of the loss determination unit 140 . have. That is, the processing unit 151 may instruct the control unit 153 to perform a function of switching to the preliminary light source according to a change in the magnitude of the voltage detected by the loss determining unit 140 .

In detail, upon receiving flag 0 from the loss determining unit 140 , the processing unit 151 determines that the high-power LED optical module 220 is normally driven and operates in the normal mode, and the optical module rectifying unit 110 rectifies The controller 153 may be instructed to output the DC power to the main light sources 223a among the plurality of main light sources 223a.

The control unit 153 outputs DC power to the PCB 221 together with a control signal for supplying DC power to the main light sources 223a according to a command from the processing unit 151 . The PCB 221 supplies input DC power to the main light sources 223a, but supplies DC power having different voltages to the main light sources 223a in the day mode and the night mode. Accordingly, the main light sources 223a emit light in the normal mode, but emit light at different dimming levels in the day mode and the night mode.

In addition, upon receiving flag 1 from the loss determining unit 140 , the processing unit 151 determines that a predetermined number of main light sources among the main light sources 223a have failed, and performs a Lamp Fail function. Accordingly, the processing unit 151 may instruct the control unit 153 to turn off the main light sources 223a, and at the same time switch to the switching mode to instruct the control unit 153 to turn on the preliminary light sources 223b.

The control unit 153 outputs a control signal to the PCB 221 for supplying the DC power supplied to the main light sources 223a to the preliminary light sources 223b according to the command of the processing unit 1510. Thereby, the main light sources 223b 223a is turned off and the preliminary light sources 223b are turned on as shown in Fig. 5. At the same time, the processing unit 151 sends a signal to report that a problem has occurred in the high-power LED optical module 220 to the traffic light controller. can transmit

According to the above-described embodiment of the present invention, the power supply device 100 is a smart power module function that receives the power supplied from the traffic light controller in accordance with the standard of the country where the traffic light is installed and generates an output to the optical module 220 . It can provide a dimming function for power consumption and visibility at night.

In addition, since the power supply device 100 additionally includes a preliminary light source in the optical module 220, even in a country to which the Lamp Fail function is applied, even if all the light sources having a failure are turned off, the preliminary light source is turned on as shown in FIG. A traffic signal function can be provided.

6 is a flowchart illustrating a power supply method of the power supply device 100 for a high-output LED traffic light head according to an embodiment of the present invention.

Referring to FIG. 6 , the power supply device 100 operates in a general mode in which the main light sources 223a of the high-power LED optical module 220 are turned on, and receives the supply power supplied from the traffic light controller (S600). .

In the normal mode, the optical module rectifying unit 110 converts and rectifies the supply power supplied from the traffic light controller into DC power to output the rectified supply power, that is, the rectified DC power (S610).

The processing control unit 153 may output the DC power output in step S610 to the main light sources 223a of the high-output LED optical module 220 (S620).

In step S620, when the processing control unit 153 outputs DC power to the PCB 221 together with a control signal for supplying DC power to the main light sources 223a, a control device provided in the PCB 221 (not shown) may supply DC power to the main light sources 223a according to the received control signal.

While steps S610 and S620 are performed, the loss determination unit 140 detects the voltage of the DC power output to the high-output LED optical module 220 (S630). In step S630 , when a failure occurs in the main light source, power is supplied to a Zener diode connected in parallel with the main light source in which the failure occurs, thereby increasing the voltage output from the high-power LED optical module 220 . Accordingly, the voltage (or the magnitude of the voltage) detected by the loss determining unit 140 rises.

If the voltage detected in step S630 is greater than or equal to a preset reference value (S640-Yes), the loss determination unit 140 generates and transmits flag 1 indicating that optical output loss has occurred to the processing control unit 153, and the processing control unit Step 153 outputs DC power to the preliminary light sources 223b while switching from the normal mode to the switching mode (S650).

On the other hand, if the voltage (or the magnitude of the voltage) detected in step S640 is less than the reference value (S640-No), the processing controller 153 maintains the operation in the normal mode.

In addition, while the supply power is rectified and output in step S610, the voltage detection unit 130 detects the voltage of the supply power input from the traffic light controller and transmits it to the processing control unit 153 (S660).

If the voltage detected in step S660 is the dimming voltage (S670-Yes), that is, the dimming mode is a voltage meaning that the dimming mode is switched from the day mode to the night mode or from the night mode to the day mode, the set conversion It is processed so that the output dimming level of the high-power LED optical module 220 is switched within the time (S680). Accordingly, the high-power LED optical module 220 performs dimming mode conversion within the conversion time set in the standard of the country where the traffic light is installed.

In the above, even though all the components constituting the embodiment of the present invention are described as being combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the components may operate by selectively combining one or more. In addition, although all the components may be implemented as one independent hardware, some or all of the components are selectively combined to perform some or all of the functions of the combined hardware in one or a plurality of hardware program modules It may be implemented as a computer program having Codes and code segments constituting the computer program can be easily inferred by those skilled in the art of the present invention. Such a computer program is stored in a computer readable storage medium (Computer Readable Media), read and executed by the computer, thereby implementing the embodiment of the present invention.

On the other hand, although described and illustrated in relation to a preferred embodiment for illustrating the technical idea of the present invention as described above, the present invention is not limited to the configuration and operation as shown and described as such, and deviates from the scope of the technical idea. It will be apparent to those skilled in the art that many changes and modifications to the present invention are possible without the above. Accordingly, all such suitable alterations and modifications and equivalents are to be considered as falling within the scope of the present invention. Accordingly, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

100: power supply for high-power LED traffic lights
110: optical module rectifying unit
120: processing rectifying unit
130: voltage detection unit
140: loss judgment unit
150: processing control unit

Claims (8)

an optical module rectifying unit that rectifies the power supplied from the traffic light controller (hereinafter referred to as 'supply power') and outputs it as power for a high-output LED optical module;
a processing control unit outputting the rectified supply power to a high-output LED optical module to control on/off of the high-output LED optical module; and
A loss determination unit for determining whether optical output loss of the high-output LED optical module occurs by checking the size of the rectified supply power output to the high-output LED optical module;
The processing control unit,
Controlling on-off so that a plurality of high-power LED light sources provided in the high-power LED optical module selectively emit light according to the determination result of the loss determining unit
A power supply for high-power LED traffic lights, characterized in that The method of claim 1,
The high-power LED optical module includes a plurality of main light sources and a plurality of preliminary light sources,
The processing control unit,
Controlling the rectified supply power to be output to the plurality of main light sources when operating in the normal mode
A power supply for a traffic light head using a high-output LED, characterized in that. 3. The method of claim 2,
The processing control unit,
When the loss determination unit determines that the voltage output to the plurality of main light sources is equal to or greater than a predetermined reference value, the unit switches to a switching mode to stop the supply power output to the plurality of main light sources, and the plurality of spares output to light sources
A power supply for a traffic light head using a high-output LED, characterized in that. According to claim 1,
Further comprising; a voltage detection unit for detecting the voltage of the power supply supplied from the traffic light controller;
The processing control unit,
If the detected voltage is one of the dimming voltage for operating in the day mode and the dimming voltage for operating in the night mode, the output dimming level of the high-power LED optical module is switched within a predetermined conversion time according to the corresponding dimming voltage. to deal with
A power supply for a traffic light head using a high-output LED, characterized in that. (A) rectifying, by the power supply device, the power supplied from the traffic light controller (hereinafter referred to as 'supply power');
(B) the power supply unit, outputting the supply power rectified in step (A) to the high-output LED optical module to control the on-off of the high-output LED optical module;
(C) determining, by the power supply device, whether optical output loss of the high-output LED optical module occurs by checking the size of the rectified supply power output to the high-output LED optical module; and
(D) controlling, by the power supply device, on/off to selectively emit light from a plurality of high-power LED light sources provided in the high-power LED optical module according to the determination result of step (C);
A power supply method for high-power LED traffic lights comprising a. 6. The method of claim 5,
The high-power LED optical module includes a plurality of main light sources and a plurality of preliminary light sources,
The step (B) is,
Controlling the rectified supply power to be output to the plurality of main light sources when the power supply device operates in a normal mode
Power supply method for high-power LED traffic lights, characterized in that. 7. The method of claim 6,
(E) when it is determined that the voltage output to the plurality of main light sources in step (C) is greater than or equal to a predetermined reference value, the power supply device switches to a switching mode and outputs to the plurality of main light sources stopping the supply power and outputting it to the plurality of preliminary light sources;
Power supply method for high-output LED traffic light head, characterized in that it further comprises. 6. The method of claim 5,
(F) detecting, by the power supply device, the voltage of the power supply supplied from the traffic light controller;
(G) if the power supply device is one of a dimming voltage for operating in a day mode and a dimming voltage for operating in a night mode, the voltage detected in step (F), the high-output LED light according to the corresponding dimming voltage A power supply method for high-power LED traffic lights, characterized in that the module's output dimming level is converted within a predetermined conversion time.

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