KR101694530B1 - LED(Light Emitting Diode) lighting fixture capable of maintaining relative humidity and preventing flicker - Google Patents

Abstract

The present invention relates to an LED lighting apparatus capable of maintaining relative humidity and preventing flickering.
An LED lighting apparatus capable of maintaining relative humidity and preventing flickering according to the present invention comprises: a body housing constituting a main body of a lighting apparatus; A cover lens housing coupled to the front of the body housing, the cover lens housing forming an outer housing of the lighting apparatus together with the body housing; An LED lamp provided inside the outer housing made up of the body housing and the cover lens housing and serving as a light source for illumination; An LED driver installed inside the body housing for controlling the current according to the temperature change inside the lighting apparatus by the temperature sensing means and controlling the lighting and lighting of the LED lamp; And an electric insulating liquid filled in the outer housing made up of the body housing and the cover lens housing and maintaining the relative humidity inside the lighting apparatus constant.
According to the present invention, it is possible to prevent the condensation phenomenon by keeping the relative humidity in the interior of the lighting apparatus constant by filling the interior of the lighting apparatus with the insulating liquid, as a result, It is possible to prevent the flicker and improve the reliability of the quality of the lighting apparatus.

Description

(LED) lighting fixture capable of maintaining relative humidity and preventing flicker (LED)

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an LED (Light Emitting Diode) lighting apparatus, and more particularly, to a lighting apparatus capable of maintaining a constant relative humidity inside a lighting apparatus by charging insulation oil into a lighting apparatus, The present invention relates to an LED lighting apparatus capable of preventing flicker and maintaining relative humidity and preventing flickering.

Outdoor lighting fixtures are subject to ambient environmental conditions such as external temperature changes and relative humidity.

A change in the external temperature causes a significant pressure difference between the exterior and the interior of the luminaire, and over time, the seal is broken due to the pressure applied to the luminaire, and the contaminant particles and moisture penetrate into the interior of the luminaire. This damages the cable inside the lighting device and causes failure or deterioration of the electronic parts such as the power supply device and the LED device, thereby shortening the life span of the lighting device.

Relative humidity is the amount of water vapor contained in the atmosphere at a specific temperature divided by the amount of saturated water vapor at that temperature. That is, the relative humidity means the ratio of the actual water vapor amount to the saturated water vapor amount at a given temperature. Therefore, when the relative humidity is 100%, condensation occurs due to saturation of water vapor in the atmosphere. Moisture penetrated into the interior of the lighting device causes condensation in the cover lens or the reflection device, and when such condensation occurs, the electronic component inside the lighting device is broken or deteriorated and the light efficiency is lowered.

The conventional lighting apparatus is affected not only by the temperature and the relative humidity change as described above but also by the frequency characteristic of the AC power supply due to the use of the normal commercial power supply (for example, AC 220 V power supply), so-called flicker flicker. Such flicker is known to cause physiological side effects such as eye fatigue, poor visual acuity, dizziness, migraine, and nerve seizures.

[0004] Meanwhile, in Japanese Unexamined Patent Application Publication No. 10-2012-0018106 (Patent Document 1), there is shown an annular socket module, an LED module inserted into the inner periphery of the socket module and rotated between a first position and a second position, A first connector and a second connector provided on the LED module and separated from the first position and connected at the second position, and a second connector disposed at an inner circumferential side of the socket module, and penetrating between the socket module and the LED module, And a sealing means for shielding the light from the light source. In addition, Japanese Unexamined Patent Application Publication No. 10-2011-0085922 (Patent Document 2) discloses an LED lighting apparatus including an LED light source unit having a plurality of LED elements mounted on a circuit board, a light source accommodating the LED light source unit And a heat sink which receives the heat generated by the LED light source and diverges into the atmosphere, the LED lighting device comprising: a heat conductive material having a heat transfer coefficient higher than that of air; And a heat transfer filler which is filled in the empty space and absorbs heat from a portion in contact with the LED light source portion and transfers the heat to the heat sink.

However, in the above-mentioned Patent Document 1, the socket module and the LED module are combined so as to face each other with the inner circumferential surface and the outer circumferential surface facing each other, so that the structure is simple and has a merit of being useful as an outdoor light by a waterproof structure in a safe manner. Patent Document 2 discloses a heat conductive filler and a transparent thermoconductive material The heat is transferred to the heat sink uniformly as the heat conduction path is shortened to the shortest distance to dissipate heat rapidly and effectively to prevent the overheating of the LED device and to provide excellent optical characteristics and long life of the device. And 2 have a problem in that it is not possible to appropriately cope with temperature change, relative humidity change, flicker, etc. in the lighting apparatus.

Published Japanese Patent Application No. 10-2012-0018106 (Feb. 29, 2012) Japanese Patent Application Laid-Open No. 10-2011-0085922 (July 27, 2011)

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a lighting apparatus capable of maintaining a constant relative humidity inside a lighting apparatus by charging an electric insulating liquid into a lighting apparatus, The present invention provides an LED lighting apparatus capable of preventing relative flicker and maintaining relative humidity.

According to an aspect of the present invention, there is provided an LED lighting apparatus capable of maintaining relative humidity and preventing flickering,

A body housing constituting a main body of the lighting apparatus;

A cover lens housing coupled to the front of the body housing, the cover lens housing forming an outer housing of the lighting device together with the body housing;

An LED lamp as a light source for illumination, installed in an outer housing made up of the body housing and the cover lens housing;

An LED driver installed inside the body housing for controlling a current according to a temperature change inside the lighting device by a temperature sensing unit and controlling the LED lamp to be turned on and off; And

And an electric insulating liquid filled in the outer housing made up of the body housing and the cover lens housing for maintaining the relative humidity inside the lighting apparatus constant.

Here, the body housing includes a cylindrical body portion in which the LED driver is installed, and a socket base portion formed integrally with the cylindrical body portion at one end of the cylindrical body portion.

At this time, the cylindrical body portion is formed to have a trapezoidal shape in a two-dimensional plane, the radius of which is opposite to the radius of the side on which the socket base portion is formed, being relatively larger.

At this time, a "U" -shaped curved portion is formed for circulating the electric insulation liquid within the cylindrical body portion on the side where the socket base portion is connected, so that heat generated in the lighting device can be circulated.

The LED driver may further include: a transformer receiving an AC voltage supplied from the outside and performing a constant voltage conversion; A rectifier circuit unit receiving an output voltage (AC voltage) from the transformer and converting the DC voltage into a DC voltage; A temperature sensing unit electrically connected to the rectifying circuit unit and detecting a temperature change inside the lighting apparatus due to an overcurrent flowing in a lighting device internal circuit or an abnormal current caused by a defect of the LED lamp, and; Current control means for controlling a current flowing in the circuit in accordance with a change in resistance value according to a temperature change sensed by the temperature sensing means; Power factor preventing means for limiting a consumed current to a predetermined value and minimizing a power factor change in order to minimize standby power at no load according to current control by the current control means; And a semiconductor switching element for interrupting the current flowing to the LED lamp in conjunction with the current control by the current control means to prevent flicker caused by the LED lamp.

At this time, a bridge diode may be used as the rectifying circuit portion.

Also, a thermistor may be used as the temperature sensing means.

A transistor may be used as the current control means.

An IC chip may be used as the power factor preventing means.

Further, the consumption current is limited to 0.1 mA in order to minimize the standby power at the time of no-load in the power factor preventing means.

Also, an N-channel MOSFET may be used as the semiconductor switching device.

As the electrically insulating liquid, a dimethyl silicone oil or a methylphenyl silicone oil or a mixed oil of the dimethyl silicone oil and the methylphenyl silicone oil may be used.

According to the present invention, it is possible to prevent the condensation phenomenon by keeping the relative humidity in the interior of the lighting apparatus constant by filling the interior of the lighting apparatus with the insulating liquid, as a result, It is possible to prevent flicker and improve the reliability of the quality of the lighting apparatus.

1 is an external perspective view showing a structure of a body housing and a cover lens housing of an LED lighting apparatus capable of maintaining relative humidity and preventing flickering according to the present invention.
2 is a view showing an internal structure of an LED lighting apparatus capable of maintaining relative humidity and preventing flickering according to the present invention.
FIG. 3 is a view showing a state before and after charging of an electric insulation liquid inside a housing of an LED lighting apparatus, which can prevent relative humidity and flicker according to the present invention.
4 is a diagram schematically showing a configuration of an LED driver of an LED lighting apparatus capable of maintaining relative humidity and preventing flickering according to the present invention.
5 is a view showing a circulation structure of an internally generated heat of an LED lighting apparatus capable of maintaining relative humidity and preventing flickering according to the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor can properly define the concept of the term to describe its invention in the best way Should be construed in accordance with the principles and meanings and concepts consistent with the technical idea of the present invention.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise. Also, the terms " part, "" module, "and" device " Lt; / RTI >

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the structure of a body housing and a cover lens housing, and FIG. 2 is a perspective view showing the structure of a body housing and a cover lens housing of the LED lighting apparatus according to an embodiment of the present invention. FIG. 3 is a view showing a state before and after charging of the electrically insulating liquid into the housing. FIG.

1 to 3, an LED lighting apparatus (hereinafter simply referred to as LED lighting apparatus) capable of maintaining relative humidity and flicker according to the present invention includes a body housing 110, a cover lens housing 120 ), An LED lamp 130, an LED driver 140, and an electric insulating liquid 150.

The body housing 110 is a main body of the LED lighting apparatus according to the present invention. The body housing 110 includes a cylindrical body portion 110a in which the LED driver 140 is installed and a socket body 110a formed integrally with the cylindrical body portion 110a at one end of the cylindrical body portion 110a. And a bay portion 110b. 2 and 3), the cylindrical body 110a has a two-dimensional (two-dimensional) shape in which the radius on the opposite side to the radius on which the socket base 110b is formed is relatively larger And is formed to have a trapezoidal shape in a plane. At this time, the electric insulating liquid 150 is circulated within the cylindrical body portion 110a on the side where the socket base portion 110b is connected, so that heat generated in the lighting apparatus can be circulated A "U" curved portion 110h is formed. As the material of the body housing 110 as described above, polycarbonate may be used.

The cover lens housing 120 is coupled to the front of the body housing 110 and forms an outer housing of the lighting apparatus together with the body housing 110. The cover lens housing 120 may be formed to have a spherical surface that allows the light emitted from the LED lamp 130 to be diffused as much as possible. For example, lens spheres are designed so that a single field of view (FOV) is about 150 degrees. In addition, the cover lens housing 120 is made of a transparent synthetic resin material.

The ultrasonic plastic welding technique may be used for coupling the body housing 110 and the cover lens housing 120 as described above. In other words, this welding technique converts a power source of 220V 60Hz to an electric energy of 15kH, 20kH, 30kH through a generator, converts the electric energy into mechanical vibration energy through an ultrasonic vibrator and presses the workpiece through a horn This is a technique in which a strong friction heat is momentarily generated on the joint surface of a workpiece to dissolve and adhere to the joint surface to form a strong molecular bond. According to the present invention, the body housing 110 and the cover lens housing 120 are bonded to each other by using such a deposition technique, thereby preventing external moisture from penetrating into the interior of the lighting apparatus.

The LED lamp 130 is installed inside the outer housing composed of the body housing 110 and the cover lens housing 120 and serves as a light source for illumination. 2, a plurality of LED lamps 130 are radially installed on a disk-shaped member 112 installed inside a housing of a body housing 110 and a cover lens housing 120, do. Here, the disk-shaped member 112 serves to fix the LED driver 140 and the cylindrical heat dissipating member 111, which will be described later, as well as to heat the heat generated by the LED lamp 130. The cylindrical heat dissipating member 111 performs a heat dissipating function of heat generated from the source element (for example, temperature sensing means) of the electronic component installed in the LED driver 140.

The LED driver 140 is installed inside the cylindrical body portion 110a of the body housing 110. [ That is, the LED driver 140 is formed as one package in which a transformer, a capacitor, a resistor, and the like are mounted on the PCB, and the package structure thus configured is fixed to the circular plate member 112 by the PCB, ). The LED driver 140 performs the control of the current according to the temperature change inside the lighting apparatus by the temperature sensing means 143 (which will be described later) and the lighting and lighting control of the LED lamp 130 do.

The electric insulating liquid 150 is filled in the outer housing made up of the body housing 110 and the cover lens housing 120 (see FIG. 3). 3 (A) shows a state before the electric insulating liquid is charged, and FIG. 3 (B) shows a state after the electric insulating liquid is charged. At this time, the electric insulating liquid 150 is filled in the housing, preferably 95% of the entire space inside the housing. This is because instantaneous pressure is generated when the lighting apparatus is turned on / off, so that the remaining 5% of the remaining space can be buffered.

The electric insulating liquid 150 as described above serves to maintain the relative humidity inside the lighting apparatus constant. In addition, the electric insulating liquid 150 also serves to circulate the heat generated inside the lighting apparatus. Examples of the electrically insulating liquid 150 include dimethyl silicone oil (for example, TSF451-50E Dielectric Fluid) or methylphenyl silicone oil (for example, TSF431, TSF433, TSF437) or dimethylsilicone oil and methylphenyl silicone Mixed oils of oil may be used.

4 is a diagram schematically showing a configuration of an LED driver of an LED lighting apparatus according to the present invention.

Referring to FIG. 4, the LED driver 140 includes a transformer 141 for receiving an external AC voltage (for example, commercial AC 220V) and converting the voltage into a constant voltage; A rectifying circuit 142 for receiving an output voltage (AC 220V voltage) from the transformer 141 and converting it to a DC voltage (DC 220V) and outputting it; And detects a change in temperature inside the lighting apparatus due to an overcurrent flowing in the lighting device internal circuit and an abnormal current due to the failure of the LED lamp 130, A temperature sensing means 143 for varying the temperature of the fluid; A current control means 144 for controlling a current flowing in the circuit in accordance with a change in resistance value according to a temperature change sensed by the temperature sensing means 143; A power factor preventing means 145 for limiting a consumption current to a predetermined value and preventing a power factor change in order to minimize standby power at the time of no load according to the current control by the current control means 144; And a semiconductor switching element 146 for interrupting a current flowing to the LED lamp 130 in conjunction with current control by the current control means 144 to prevent flicker caused by the LED lamp 130.

Here, the transformer 141 may be a choke transformer, and the rectifier circuit 142 may be a bridge diode.

In addition, as the temperature sensing means 143, a thermistor as a temperature sensing resistor may be used. The transistor TR may be used as the current control means 144. [

The power factor preventing means 145 may be an IC chip. At this time, the consumption current is limited to 0.1 mA in order to minimize the standby power at the time of no-load in the power factor preventing means 145. [

The semiconductor switching element 146 may be an N-channel type MOSFET (MOSFET) as the heat resistance detection control means.

5 is a view showing the circulation structure of the internally generated heat of the LED lighting apparatus according to the present invention.

5 is a view showing a heat circulation structure in a part of the cover lens housing 120 and FIG. 5 (B) is a view showing a heat circulation in the entire space including the body housing 110 and the cover lens housing 120 Fig.

The heat generated from the LED lamp 130 comes down to the lower portion of the disk-shaped member 112 (toward the left side of the disk-shaped member 112 in the drawing) and then rides again on the curved surface of the cover lens housing 120 It shows the circulating movement route ascending to the upper part.

The heat generated on the LED driver 140 side is lowered to the lower portion of the disk-shaped member 112 and rises to the upper end on the inner wall surface of the body housing 110, Shaped curved portion 110h, and then descends again by the U-shaped curved portion 110h.

As described above, the heat generated inside the lighting apparatus has a heat circulation structure that moves upward and downward within the housing by circulating the electric insulation liquid filled in the housing, thereby effectively dissipating the heat generated inside the housing . In this way, the electric insulating liquid is filled in the housing and circulated, so that the relative humidity inside the housing can be kept constant.

As described above, the LED lighting apparatus according to the present invention prevents the condensation phenomenon by keeping the relative humidity inside the lighting apparatus constant by charging the insulator into the lighting apparatus, thereby preventing deterioration of parts inside the lighting apparatus So that the lifetime of the lighting apparatus can be prolonged.

In addition, by sensing the temperature change (that is, the change in the resistance value) by the temperature sensing means and controlling the current accordingly, it is possible to prevent the flicker, There is an advantage that the reliability of the quality can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but many variations and modifications may be made without departing from the spirit and scope of the invention. Be clear to the technician. Accordingly, the true scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of the same should be construed as being included in the scope of the present invention.

110: Body housing 110a: Cylindrical body part
110b: socket base portion 110h: U-shaped bent portion
111: cylindrical heating member 112: disk-shaped member
120: Cover lens housing 130: LED lamp
140: LED driver 141: transformer
142: rectifying circuit part 143: temperature sensing means
144: current control means 145: power factor preventing means
146: semiconductor switching element 150: electric insulating liquid

Claims (12)

A body housing constituting a main body of the lighting apparatus;
A cover lens housing coupled to the front of the body housing, the cover lens housing forming an outer housing of the lighting device together with the body housing;
An LED lamp as a light source for illumination, installed in an outer housing made up of the body housing and the cover lens housing;
An LED driver installed inside the body housing for controlling a current according to a temperature change inside the lighting device by a temperature sensing unit and controlling the LED lamp to be turned on and off; And
And an electric insulating liquid partially filled in an outer housing made up of the body housing and the cover lens housing and maintaining the relative humidity inside the lighting apparatus constant,
Wherein the body housing comprises a cylindrical body portion in which the LED driver is installed and a socket base portion formed integrally with the cylindrical body portion at one end of the cylindrical body portion,
And a U-shaped curved portion is formed in the cylindrical body portion on the side where the socket base portion is connected to circulate the electric insulating liquid so that heat generated in the lighting device can be circulated. LED lighting fixture that can maintain relative humidity and prevent flicker.
delete The method according to claim 1,
Wherein the cylindrical body portion is formed to have a trapezoidal shape in a two-dimensional plane, the radius of which is opposite to the radius of the side on which the socket base portion is formed, being relatively larger. LED lighting fixtures.
delete The LED driver according to claim 1,
A transformer for receiving an AC voltage supplied from the outside and performing a constant voltage conversion;
A rectifier circuit unit receiving an output voltage (AC voltage) from the transformer and converting the DC voltage into a DC voltage;
A temperature sensing unit electrically connected to the rectifying circuit unit and detecting a temperature change inside the lighting apparatus due to an overcurrent flowing in a lighting device internal circuit or an abnormal current caused by a defect of the LED lamp, and;
Current control means for controlling a current flowing in the circuit in accordance with a change in resistance value according to a temperature change sensed by the temperature sensing means;
A power factor preventing means for limiting a consumed current to a predetermined value and preventing a power factor change in order to minimize standby power at the time of no-load according to the current control by the current control means; And
And a semiconductor switching element for interrupting a current flowing to the LED lamp in cooperation with the current control by the current control means to prevent flicker caused by the LED lamp. LED lighting fixtures.
6. The method of claim 5,
And the rectifier circuit portion is constituted by a bridge diode.
6. The method of claim 5,
Wherein the temperature sensing means comprises a thermistor. The LED lighting apparatus according to claim 1, wherein the temperature sensing means is a thermistor.
6. The method of claim 5,
Wherein the current control means comprises a transistor, wherein the relative humidity is maintained and flicker is prevented.
6. The method of claim 5,
Wherein the power factor preventing means comprises an IC chip, wherein the relative humidity is maintained and flicker can be prevented.
10. The method of claim 9,
And the consumption current is limited to 0.1 mA in order to minimize the standby power at the time of no-load in the power factor preventing means.
6. The method of claim 5,
Wherein the semiconductor switching device is formed of an N-channel type MOSFET (MOSFET).
The method according to claim 1,
Wherein the electric insulating liquid is any one of dimethyl silicone oil, methylphenyl silicone oil, or a mixed oil of the dimethyl silicone oil and the methylphenyl silicone oil, and is capable of maintaining relative humidity and preventing flickering.

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