KR102029959B1 - LED floodlight with improved pressure regulation and ease of assembly - Google Patents

Abstract

The present invention relates to an LED floodlight with pressure control and condensation prevention functions, and improved ease of assembly, which can relieve the pressure of a space with an LED placed therein to prevent a sealing material from being damaged by high temperature air generated during an LED operation, prevent whitening of a transparent cover disposed to protect the LED module to improve durability and operational stability, relive a sealed space to prevent condensation caused by temperature difference and detachably couple a lens disposed to diffuse light emitted from LEDs to a heatsink to improve maintenance and assembly convenience. The LED floodlight comprises: an LED module (10) which is turned on by applied power and signals; a housing (20) having an accommodation space in which the LED module (10) is disposed, an opening (21) formed in a front surface thereof such that the light emitted from the LED module (10) passes therethrough, and a heat sink (22) formed on a rear surface thereof and having a plurality of heat dissipation fins (23) for dissipating heat generated from the LED module (10); a transparent cover (30) coupled to the opening (21); and an angle adjusting frame (40) adjusting the angle of the housing (20). The housing (20) is formed with a ventilation module (50) including an air vent (51) formed therein to allow air to flow and having a liquid separation membrane (52) blocking moisture contained in the air to discharge only the high temperature air generated by heat generated by the LED module (10) to the outside, thereby adjusting the pressure of a space between the LED module (10) and the transparent cover (30).

Description

LED floodlight with improved pressure regulation and ease of assembly

The present invention relates to an LED floodlight which is improved in pressure control, condensation prevention, and ease of assembly. More specifically, the sealing material is damaged by high temperature air generated during LED operation by releasing pressure in a space where an LED module is disposed. To prevent the whitening of the transparent cover disposed to protect the LED module, to improve durability and operation stability, and to prevent condensation caused by temperature difference between the inside and outside of the closed space in winter to protect the electronic device due to moisture. The present invention relates to an LED floodlight that improves pressure control, condensation prevention, and ease of assembly by improving the maintenance and assembly convenience by directly attaching and detaching a lens disposed to diffuse light emitted from an LED to a heat sink.

Generally, LED floodlights are installed indoors or outdoors and are used for irradiating light of desired brightness.

These LED floodlights mainly use high-brightness LED package to improve the lighting function, and the transparent cover to which light is projected uses glass or acrylic with excellent transmittance. It is arranged so that it can be irradiated with light in a desired direction.

A high brightness LED package is used for such LED floodlights, while the LEDs have advantages of high energy efficiency and miniaturization, while very high heat is generated when they are turned on, and when used outdoors, floodlights equipped with LEDs have an internal and external temperature difference. It is necessary to prevent the LED flood light from being heated and to prevent the LED from being damaged by the condensation because it may cause condensation to occur inside the lamp.

In addition, the high power / high efficiency LED exhibits a property of deteriorating optical properties at high temperatures according to heat generation characteristics. In order to maintain a constant optical characteristic, heat generated from the LED must be sufficiently radiated to the outside.

That is, if sufficient heat dissipation is not achieved, there is a problem in that the light output efficiency is lowered due to a decrease in optical output characteristics or a long life of the LED and a decrease in luminous flux maintenance.

On the other hand, the LED floodlight is disposed inside the housing, the LED module, the front cover of the housing and protect the LED module at the same time the transparent cover through which the light irradiated from the LED is coupled.

In this case, a predetermined space is formed between the LED module and the transparent cover, and the transparent cover is disposed with a silicone or resin product which is a sealing member for waterproofing the coupling portion with the housing.

At this time, when the LED is operating, the temperature of the predetermined space between the LED module and the transparent cover rises by more than 100 ° C, which causes an internal pressure of 10 Kg / cm3 or more, and when the LED is not lit in winter, the pressure of the predetermined space is -3Kg / cm3. There is a problem that the pressure difference with the outside falls below, the silicone or resin products arranged to seal the transparent cover due to the pressure difference has a problem that the deformation or breakage.

If the sealing member made of such a silicone or resin product is damaged, moisture may flow from the outside, causing malfunction or damaging the LED. The space pressure between the LED module and the transparent cover may be high pressure or Repeated at low pressure, the sealing member is easily damaged and loses waterproof function. Condensation occurs due to temperature difference or pressure difference between inside and outside, resulting in water droplets on the transparent cover. This could be a major cause of direct damage to the LEDs.

On the other hand, the lens of the LED floodlight is made of PC (Poly carbonate resin) material and the lens is further disposed to diffuse the light emitted from the LED, the yellowing phenomenon generally known as a disadvantage of the PC material heat generated during LED operation And accelerated by the expansion and contraction of air due to pressure, and the lens is formed in a size and shape corresponding to the size of the LED module, so if a yellowing phenomenon occurs in part, the entire lens needs to be replaced. There was a problem that the cost increases.

Republic of Korea Patent Registration No. 10-1890124 (August 14, 2018 registration) Republic of Korea Patent Registration No. 10-1319991 (2013.10.14. Registration)

The present invention is proposed to solve the above problems, by placing an air vent module (LED) between the LED module and the transparent cover to discharge the high-temperature, high-pressure air generated during the LED operation to the outside and the LED module and transparent The purpose of the present invention is to provide an LED floodlight that prevents dew condensation and improves the ease of assembly by eliminating the temperature and pressure of the space formed between the cover to increase the operational stability and maintain the waterproof function.

In addition, the present invention is configured to be detachably coupled to the heat sink by modularizing the lens constituting the LED module can replace only the lens is damaged or yellowing phenomenon can reduce the maintenance cost, convenience of assembly The purpose of the present invention is to provide an LED floodlight with improved pressure control, condensation prevention function, and ease of assembly.

In addition, the present invention can be easily equipped with a plurality of unit modules by unitizing the four LED and the lens frame, as well as replacing only the unit module damaged LED, cost control, easy pressure control, condensation prevention An object of the present invention is to provide an LED floodlight with improved functionality and ease of assembly.

In addition, the present invention by installing the appropriate amount (two 500W standard) between the ventilation module and the inside of the floodlight to eliminate the air pressure difference between the inside and outside by circulating the outside and air to prevent the condensation phenomenon by the role of Bleed Holes dramatically It is an object of the present invention to provide an LED floodlight that improves pressure control, condensation prevention, and ease of assembly to prevent whitening of glass due to moisture and contamination, thereby preventing light efficiency from being lowered.

In order to achieve the above object, the present invention, the LED module 10 is turned on by the applied power and signal; An accommodation space in which the LED module 10 is disposed is formed, and an opening 21 through which light irradiated from the LED module 10 passes is formed on a front surface thereof, and heat generated from the LED module 10 is formed on a rear surface of the LED module 10. A housing 20 having a heat sink 22 having a plurality of heat dissipation fins 23 for discharging; A transparent cover 30 coupled to the opening 21; An angle adjusting frame 40 for adjusting an angle of the housing 20; It includes; air vent 51 is formed to communicate the space between the LED module 10 and the transparent cover 30 and the outside and the air moves.

The air vent 51 is provided with a liquid separation membrane 52 for blocking moisture contained in the air to discharge only the high-temperature air generated by the heat generated by the LED module 10 to the outside and the LED module 10 and It includes a ventilation module 50 for adjusting the pressure of the space between the transparent cover (30).

The ventilation module 50 includes a pair of high-density diffuser sticks 53 disposed to sandwich the liquid separation membrane 52 in order to collect fine dust contained in the air.

The liquid separator 52 is made of polytetrafluoroethylene (PTFE) and is characterized by blocking moisture contained in the air.

The LED module 10 includes an LED 11 and a PCB 12 on which the LED 11 is mounted, and the PCB 12 is disposed on one surface of the heat sink 22 and the LED ( A lens 14 for diffusing the light emitted from 11 is detachably coupled through the slot 13 of the PCB.

The PCB 12 is formed with a slot 13 to which the lens 14 is coupled, and the lens 14 is provided with a lens frame having a plurality of legs 151 movably inserted into the slot 13. Coupled to (15).

The present invention made as described above, the pressure of the space in which the LED module is disposed to prevent damage to the sealing material by the high temperature air generated during the LED operation, the whitening phenomenon of the transparent cover disposed to protect the LED module Prevents condensation caused by differences in temperature inside and outside the confined space and prevents condensation caused by temperature difference. Spheres, two spheres, one sphere) can be detachably combined to improve the maintenance and assembly convenience.

In addition, the present invention not only can easily mount a plurality of unit modules through the slot module by modularizing the four LED and the lens frame, but also has the effect of convenient cost reduction and maintenance by replacing only the unit module in which the LED is broken. .

In addition, the present invention by installing a proper amount (two 500W standard) between the inside and the outside of the floodlight module, by eliminating the difference in air pressure between the inside and outside and circulating the outside and air to prevent the condensation phenomenon as a role of Bleed Holes It can prevent the whitening of the glass due to moisture and pollution, thereby preventing the light efficiency from being lowered, resulting in energy waste and maintenance cost reduction.

1 is an exemplary view showing an LED floodlight improved pressure control function and assembly convenience according to the present invention.
Figure 2 is an exemplary view showing an LED floodlight at different angles to improve pressure control and assembly convenience according to the present invention.
Figure 3 is a schematic diagram showing a state in which a ventilation module constituting the present invention is installed.
4 is a cross-sectional view showing a state in which a part of the ventilation module constituting the present invention cut.
5 is an exemplary view showing an LED module constituting the present invention.
6 is an exemplary view showing a state in which the LED module constituting the present invention partially disassembled.

Hereinafter, other objects and features of the present invention in addition to the above object will be apparent through a description of the embodiments with reference to the accompanying drawings.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the LED flood light improved pressure control function and assembly convenience according to the present invention.

LED floodlight (1), the pressure adjustment function and the ease of assembly according to the present invention, the LED module 10, the housing 20, the LED module 10 is disposed, and coupled to the housing 20 An angle adjusting frame for controlling the angle of the housing 20 and the transparent cover 30 through which the light irradiated from the LED module 10 passes while protecting the LED module 10 from external moisture and foreign substances. 40 and the LED module 10 through the vent module 50, including a vent module 50 for discharging only the air in the space between the LED module 10 and the transparent cover 30 to the outside Only the hot air formed in the space between the transparent cover 30 is discharged to the outside, and the moisture inflow from the outside is blocked to maintain the waterproof function while the high temperature and high pressure air to damage the combined portion of the LED module and the transparent cover It can be prevented.

Looking at this in detail with reference to the accompanying drawings, first, the LED module 10 is operated by the applied power and signal, a plurality of LEDs 11 are arranged at a predetermined interval, each LED 11 is a PCB It is mounted at (12).

The LED module 10 has a slot 13 in which a PCB 12 on which an LED 11 is mounted is disposed, and a lens frame 14 including the lens 14 is movably inserted therein, and the lens is formed. 14 is coupled to the lens frame 15 is formed with a leg 151 that is movably inserted into the slot (13).

Here, the PCB 12 is a printed circuit board that transmits power and signals required for the operation of the LED.

And the PCB 12 is coupled to the heat sink 22 provided on one surface of the housing 20, the heat sink 22 is made of aluminum or germanium material so as to quickly dissipate heat emitted from the LED 11 to the outside Is made of.

Here, a plurality of heat dissipation fins 23 are vertically formed at a predetermined interval on the heat sink 22 to allow air to flow between the heat dissipation fins 23 and maximize the contact area with external air to quickly dissipate internal heat to the outside. Let's do it.

The heat sink 22 and the PCB 12 are connected to a heat conductive film having high insulation and high thermal conductivity, and transfer heat emitted from the LED 11 to the heat sink 22 through the heat conductive film to the LED 11. It quickly releases the heat dissipated to the outside.

As shown in FIG. 5 and FIG. 6, the LED module 10 having the above structure is first arranged with a PCB 12 mounted with an LED 11 in a slot 13 and then coupled to a lens frame 15. The inserted lens 14 into the slot 13 and then moves the lens 14 to a designated position.

In this case, a leg 151 is formed at a position corresponding to the slot 13 in the lens frame 15, and the leg 151 is inserted into the slot 13 so as to be movable so that the lens frame 15 is designated. It is fixed by moving to.

       The lens insertion slot 13 is manufactured and installed on the PCB 12, and the lens is mounted in a slot of the PCB by inserting the locking device to prevent the flow of the lens 14 in a manner of being inserted into the slot of the PCB.

       Therefore, there is no need for a separate fixing device on the PCB only by mounting the lens, and it can be fixed on the PCB just by mounting the lens.

Here, since the legs 151 of the lens frame 15 are pressed into the slot 13 and the LED 11 chip is supported by the PCB substrate, the chip is bonded to the PCB 13, thereby minimizing contact resistance to prevent heat generation.

The LED module 10 made as described above can not only easily attach or detach a plurality of unit modules by uniting four LEDs and a lens frame, but also need to replace the lens 14 due to yellowing or LEDs due to breakage. (11) can be replaced only to reduce the cost of maintenance, it is easy to combine and detach, there is an advantage that can reduce the time required for replacement.

Meanwhile, in the drawing, the number of LEDs mounted on the PCB is four, and the lens also shows that four units are configured as one unit so as to correspond to the number and position of the LEDs. Of course, the number can be changed in various ways.

The housing 20 has a receiving space in which the LED module 10 is disposed, and an opening 21 through which light emitted from the LED module 10 passes is formed on a front surface thereof, and the LED module on a rear surface thereof. The heat sink 22 is provided with a plurality of heat dissipation fins 23 for dissipating the heat generated by the (10).

The housing 20 is formed in an enclosure having an accommodating space therein, and the LED module 10 is disposed in the accommodating space. In addition, the opening 21 is irradiated toward the opening with the light emitted from the LED module 10 formed and disposed in communication with the accommodation space.

The opening 21 is formed on one surface of the housing 20, the transparent cover 30 to be described later as a passage for the light irradiated from the LED module 10 to the outside is coupled, the transparent cover 30 is coupled The coupling portion with the sealing member (not shown in the figure) made of silicone or synthetic resin material is provided to block the inflow of moisture from the outside.

The heat sink 22 is disposed on the LED module 10 on one side and a plurality of heat dissipation fins 23 for dissipating heat generated from the LED module 10 are arranged at a mutual interval.

The number, spacing, length, etc. of the heat dissipation fins 23 are not limited to the shape shown as being changeable according to the size of the housing 20 and the number of LEDs 11 arranged in the LED module 10. to be.

The transparent cover 30 is coupled to the opening 21 of the housing 20 to pass the light emitted from the LED module 10 and to block foreign substances, moisture, etc. from the outside from entering the housing. It is made of transparent glass or synthetic resin material.

A light diffusion pattern for diffusing light emitted from the LED module 10 may be formed on one surface disposed on the housing 20 side or the other surface exposed to the outside.

The angle adjusting frame 40 is for adjusting the angle of the housing 20, a pair of coupling pieces 41 and the coupling piece 41 disposed symmetrically on the outer surface of the housing 20, And a pair of adjustment pieces 42 symmetrically disposed at positions spaced apart from each other to be abutted, and a fixing piece 43 connecting the adjustment pieces 42.

The coupling piece 41 is integrally coupled to the outer surface of the housing 20 through a coupling bolt, as shown in Figures 1 and 2 is bent in a direction away from the housing is the process of rotating the housing 20 To prevent the outer surface of the housing 20 abuts on the adjusting piece (42).

The adjusting piece 42 is one end is coupled to the coupling piece 41 and the other end is coupled to the fixing piece 43 to be described later, the angle adjusting hole 421 made of a semi-circular shape in contact with the coupling piece 41 ) Is formed.

The tightening bolt 422 is disposed in the angle adjusting hole 421, and the tightening bolt 422 is inserted into the coupling hole 411 formed in the coupling piece 41 to be tightened and released to prevent the angle of the housing 20. After adjusting, fix the position of the housing by tightening the tightening bolt 422.

In this case, an angle indicator 423 for intuitively displaying that the angle of the housing is adjusted along the edge of the angle adjusting hole 421 may be formed to increase convenience of angle adjustment.

The fixing piece 43 is coupled to the other end of the pair of the adjusting piece 42, respectively, is formed extending in the longitudinal direction and made of a flat plate shape in close contact with the outer surface of the floor or the external device.

And the fixing piece 43 is further formed with a fixing hole 431 is coupled to the fixing bolt 432 for coupling to the bottom or the outer surface of the external device, the horizontal angle for rotating the fixing piece 43 in the horizontal direction The adjusting hole 433 is formed.

That is, the fixing piece 43 rotates the fixing piece 43 in the horizontal direction in the coupled state of the floor or an external device to adjust the direction of the light emitted from the LED module 10 together with the angle adjusting hole 421. It can be adjusted in various ways.

In this case, in order to rotate the fixing piece 43 in the horizontal direction, the angle of the fixing piece may be adjusted in the order of tightening the fixing bolt after adjusting the angle of the fixing piece after releasing the fixing bolt 432.

On the other hand, in the housing 20 of the present invention, an air vent 51 through which air moves is formed, and the air vent 51 is provided with a liquid separation membrane 52 for blocking moisture contained in the air. Ventilation module 50 is further provided to control the pressure of the space between the LED module 10 and the transparent cover 30 by discharging only the high temperature air generated by the heat generated by the module 10 to the outside.

The vent module 50 is for discharging the high-temperature, high-pressure air generated during the operation of the LED 11 provided in the LED module 10 to the outside of the housing, as shown in Figure 3 and 4, The air vent 51 is formed to communicate the space between the LED module 10 and the transparent cover 30 and the outside, and the liquid separator 52 is provided therein.

3 is a schematic view showing a state in which the ventilation module 50 is disposed, and shows only a part of the housing, the transparent cover, and the LED module, and FIG. 4 is a cutaway view of any one of the plurality of air vents shown in FIG. It is shown.

The liquid separator 52 is made of polytetrafluoroethylene (PTFE), and ethylene (C₂H₄) is a combination of two carbon atoms and four hydrogen atoms, and two carbon atoms are double-bonded.

Two hydrogen atoms are bonded to each carbon atom, and when all four hydrogen atoms are replaced with fluorine atoms, it becomes tetrafluoroethylene (TFE) and C2F₄. A high molecular material of polytetrafluoroethylene (PTFE) is formed.

Here, polytetrafluoroethylene is a polymeric material, with about 1.4 billion holes per square centimeter, which is about 2,000 times smaller than a drop of water.

That is, the volume of a drop of water is usually 0.03 to 0.05 ml, and the pore of polytetrafluoroethylene is 2x10 ^-6 (0.0000025 ml). Therefore, since water does not pass through polytetrafluoroethylene, moisture from the outside cannot be introduced through the air vent 51.

In addition, since the air is about 2,000 times smaller than the hole of polytetrafluoroethylene, the air between the LED module 10 and the transparent cover 30 is discharged to the outside and the air from the outside can also move inside.

Therefore, the high temperature and high pressure air between the LED module 10 and the transparent cover 30 is discharged to the outside and the outside air moves to the inside of the housing to control the temperature and pressure.

In addition, a pair of high-density diffuser sticks 53 are respectively provided on both sides of the liquid separation membrane 52, and outside air is introduced by collecting fine dust contained in the air through the high-density diffuser sticks 53. When the fine dust contained in the air is prevented from flowing between the LED module 10 and the transparent cover 30.

The high-density diffuser stick 53 is composed of a grit having a diameter of 76 μm or more, and capable of blocking dust having a diameter of 1 to 76 μm.

Ventilation module 50 of the present invention made as described above is a high temperature generated during the operation of the LED 11 arranged in the LED module 10 by communicating the space between the LED module 10 and the transparent cover 30 and the outside And high pressure air is discharged to the outside, and relatively low temperature and low pressure outside air is moved between the LED module 10 and the transparent cover 30 to control the temperature and pressure at the corresponding position.

In addition, through the liquid separation membrane 52 and the high-density diffuser stick 53, moisture can be blocked and only the air can move, thereby maintaining waterproof performance, and removing foreign substances contained in the incoming air, thereby maintaining the light efficiency characteristics and waterproof performance. By controlling the high temperature and high pressure generated when the module 10 operates, it is possible to prevent whitening of the transparent cover and to reduce energy waste and maintenance costs.

In addition, it is possible to prevent insulation breakdown, which is a weak point of semiconductor devices such as LEDs and PCBs, to prevent device failure or fire, thereby improving operation reliability and safety.

In the present invention as described above has been described by the specific embodiments, such as specific components and limited embodiments and drawings, but this is provided to help a more general understanding of the present invention, the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations are possible from these descriptions.

Therefore, the spirit of the present invention should not be limited to the embodiments described, and all the things that are equivalent to or equivalent to the claims as well as the claims to be described later belong to the scope of the present invention.

1: LED floodlight with improved pressure regulation and ease of assembly
10: LED module
11: LED 12: PCB
13: slot 14: lens
15: lens frame
20: housing
21: opening 22: heat sink
23: heat dissipation fin
30: transparent cover
40: angle adjustment frame
41: engaging piece 42: adjusting piece
43: fixed piece
50: ventilation module
51 air vent 52 liquid separation membrane
53: high density diffuser stick

Claims (6)

An LED module 10 which is turned on by an applied power and signal;
An accommodation space in which the LED module 10 is disposed is formed, and an opening 21 through which light irradiated from the LED module 10 passes is formed on a front surface thereof, and heat generated by the LED module 10 is formed on a rear surface of the LED module 10. A housing 20 having a heat sink 22 having a plurality of heat dissipation fins 23 for discharging;
A transparent cover 30 coupled to the opening 21;
An angle adjusting frame 40 for adjusting an angle of the housing 20;
And an air vent (51) configured to communicate the space between the LED module (10) and the transparent cover (30) and the outside, and to move air.
The LED module 10 includes an LED 11 and a PCB 12 on which the LED 11 is mounted, and the PCB 12 is disposed on one surface of the heat sink 22 and the LED ( 11) LED flood light improved pressure control, dew condensation prevention function and ease of assembly, characterized in that the lens 14 for diffusing the light irradiated from 11) is detachably coupled through the slot 13 of the PCB. The method according to claim 1,
The air vent 51 is provided with a liquid separation membrane 52 for blocking moisture contained in the air to discharge only the high-temperature air generated by the heat generated by the LED module 10 to the outside and the LED module 10 and Pressure flooding, characterized in that it comprises a ventilation module 50 for adjusting the pressure of the space between the transparent cover 30, condensation prevention function and LED floodlight improved assembly convenience. The method according to claim 1,
Pressure control, dew condensation characterized in that it further comprises a ventilation module 50 having a pair of high-density diffuser sticks 53 disposed between the liquid separation membrane 52 in order to collect the fine dust contained in the air LED floodlight with improved phenomenon prevention and assembly convenience. The method according to claim 3,
The liquid separator 52 is made of polytetrafluoroethylene (PTFE), the LED flood light improved pressure control, dew condensation prevention function and ease of assembly, characterized in that to block moisture contained in the air. delete The method according to claim 1,
The PCB 12 is formed with a slot 13 to which the lens 14 is coupled,
The lens 14 is coupled to the lens frame 15 provided with a plurality of legs 151 movably inserted into the slot 13, thereby improving pressure control, condensation prevention function, and assembly convenience. LED floodlight.

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