KR101139235B1 - Eco friendly led lighting - Google Patents

Abstract

PURPOSE: An eco friendly LED(light emitting diode lighting) is provided to prevent a foreign material from being attached to a diffusion cover by maintaining the brightness of a LED light source using an uninterruptible diffusion cover and preventing a diffusion cover from being bleached. CONSTITUTION: A light-generating unit is accepted and mounted on a mounting unit(11). A base(10) includes a horizontal portion(14) on which the mounting unit is formed. A supporter(20) is combined with the horizontal portion and supports a diffusion cover(50) covering the mounting unit of the base. An uninterruptible coating layer(52) is formed on the diffusion cover. The uninterruptible coating layer is made of a compound having various materials and an UV blocking agent including 2-3 weight% in comparison to 100% weight.

Description

Eco friendly LED lighting with uninterruptible diffusion cover

The present invention relates to an environmentally friendly LED lamp having an uninterruptible diffusion cover, and more particularly, to maintain a continuous brightness (illuminance) of the LED light source by using an uninterruptible diffusion cover, and the diffusion cover is discolored by ultraviolet rays due to long-term use. An object of the present invention is to provide an environmentally friendly LED having an uninterruptible diffusion cover that can prevent the phenomenon.

 The present invention includes a base having a mounting portion for receiving and mounting the light source unit, and a horizontal portion forming the mounting portion; Is coupled to the horizontal portion of the base, the support for supporting the diffusion cover covering the mounting portion of the base;

The diffusion cover further includes an uninterrupted coating layer,

The uninterruptible coating layer is ethyl alcohol, methyl alcohol, isopropyl alcohol, acetone, methyl ethyl ketone, ethyl isoketone, ethylene glycol, aniline, toluene, chloroform sodium dodecyl sulphate, polyvinyl alcohol, triton-x, hydropropyl 20-40% by weight of a dispersant in which 50 parts by weight of the selected dispersant is mixed with the selected dispersant or two dispersants selected from cellulose and hydroxypropyl methylcellulose;

10-25 parts by weight of polyester or polyester; 70-85 parts by weight of urethane or epoxy; 20-40% by weight of a binder solvent obtained by mixing 1-3 parts by weight of silane (adhesive enhancer);

Single-walled carbon nanotubes, double-walled carbon nanotubes multi-walled carbon nanotubes, carbon nanofibers, nanocarbon, graphene, characterized in that the coating of a mixture of 20-40% by weight of carbon nanowires selected from fulleran .

The LED has a junction structure of a P-type and an N-type semiconductor, and is an optoelectronic device that emits light of energy corresponding to a bandgap of a semiconductor by combining electrons and holes when a voltage is applied. Compared to general light bulbs, it is faster and consumes 20% less power, so it is widely used in various fields such as indoor and outdoor lighting, street lighting, signage, structure lighting, and decorative lighting.

Since these LEDs exhibit optimal operating efficiency only when they are maintained at a temperature of 50 to 60 ° C. or below at a normal room temperature of 25 ° C., the above conditions must be maintained to ensure the brightness and lifetime (more than 50,000 hours) required for the LED lamps. Can be.

In addition, when the LED is used as a surface light, it is common to diffuse the illuminance of the LED light source by using a diffusion cover in a portion through which the LED light source transmits due to the straightness of the light which is a characteristic of the LED light source.

However, the LED lamps currently used are impurities (fine dust) on the surface of the conversion cover made of acrylic, PC (PC) or PMMA (PMMA) when the temperature rises to 80 ° C or higher when the power is connected. There is a problem of dropping the roughness by sticking.

In addition, when the LED light source is used for a long time, the diffusion cover may be yellowed by ultraviolet rays, and in this case, there is a problem of dropping the illuminance of the LED light source.

This causes a problem that the brightness of the LED decreases over time and the life is much shorter.

In general, ceiling bars are fixedly installed at regular intervals, and ceiling finishing panels are fixedly coupled to the lower ends of the ceiling bars to cover wiring or air ducts disposed therein.

The frame of the luminaire is usually screwed and fixed to the ceiling bar through the bolt, and the bolt penetrates from the outside of the frame to the ceiling bar and is coupled to the ceiling bar, thereby exposing the head of the bolt to the outside of the frame, thereby damaging the appearance of the luminaire.

Thus, some luminaires have a stopper covering the head of the bolt to the frame to prevent the head of the bolt from being exposed. However, because the stopper is also provided to protrude on the outer surface of the frame is difficult to solve the problem of damaging the appearance of the luminaire.

In the conventional luminaire, the frame is bolted directly to the ceiling bar.

Therefore, when there is a problem in the light source unit, power supply (stabilizer), wiring, etc. built in the frame of the luminaire, and maintenance work is required, the entire luminaire is removed from the ceiling bar and then maintenance work is performed.

In order to bring down the luminaire removed from the ceiling bar to the indoor floor, the length of the wiring for supplying external power is not allowed, which is difficult for maintenance work and the worker within the allowable length of the wiring. It is not easy for a person to hold the luminaire with one hand and perform maintenance work with the other hand, but it is a waste of manpower to perform maintenance work with two people.

In other words, the conventional luminaire has to be separated and dismantled from the ceiling bar for the maintenance work, there was a lot of trouble in the maintenance work.

The present invention is to overcome the above problems,

The present invention uses an uninterrupted diffusion cover in which a dispersant, a binder solvent, a carbon nanowire, and a sunscreen agent are mixed and coated on a diffusion cover to maintain a constant illuminance of the LED light source, and at the same time when the ultraviolet light is exposed to the diffusion cover. To provide an LED light that can prevent the diffusion cover from discoloring,

In order to solve the problem that the fixing bolt is exposed to the outer surface of the frame to damage the appearance, a support having a receiving groove in which the head of the fixing bolt is accommodated, and a concealing member for concealing the fixing bolt by covering the receiving groove coupled to the support. Introducing the LED light without damaging the appearance of the lighting fixtures,

When maintenance of the luminaire is required, the fixing bolt is dismantled to separate only the support and the diffusion cover, and the base can be maintained in the fixed state on the ceiling bar. Rejoining the support to the base also provides a convenient LED light,

To prevent the appearance of damage and simplify the structure of the frame components to provide a low cost LED lighting.

An environmentally friendly LED having an uninterruptible diffusion cover according to the present invention for achieving the above object is

A base having a mounting portion to which the light source unit is mounted, and a horizontal portion forming the mounting portion; Is coupled to the horizontal portion of the base, the support for supporting the diffusion cover covering the mounting portion of the base;

The diffusion cover further includes an uninterrupted coating layer,

The uninterruptible coating layer

Ethyl alcohol, methyl alcohol, isopropyl alcohol, acetone, methyl ethyl ketone, ethyl isoketone, ethylene glycol, aniline, toluene, chloroform sodium dodecyl sulfate, polyvinyl alcohol, triton-x, hydropropyl cellulose, hydroxy 20-40% by weight of a dispersant in which 50 parts by weight of the selected dispersant is mixed with each of the selected dispersant or two dispersants selected from propyl methyl cellulose;

10-25 parts by weight of polyester or polyester; 70-85 parts by weight of urethane or epoxy; 20-40% by weight of a binder solvent obtained by mixing 1-3 parts by weight of silane (adhesive enhancer);

Single-walled carbon nanotubes, double-walled carbon nanotubes multi-walled carbon nanotubes, carbon nanofibers, nanocarbon, graphene, characterized in that the coating of a mixture of 20-40% by weight of carbon nanowires selected from fulleran .

In addition, 100% by weight of the uninterruptible coating layer mixture of the present invention is made of a sunscreen further comprises 2-3% by weight,

The sunscreen agent is an inorganic sunscreen base is 25-50% by weight titanium dioxide, 20-45% by weight neopentyl glycol diethan hexanoate, 20-45% by weight cyclomethicone, and polyglyceryl-6 polysilicate It is characterized by consisting of 1-5% by weight of oleate.

In addition, the thickness of the uninterruptible mixture according to the present invention is characterized in that the 20-70㎛.

In addition, in the longitudinal direction of the support according to the present invention is formed a receiving groove for receiving the head of the fixing bolt for fastening the horizontal portion of the base and the support,

Covering the receiving groove to conceal the fixing bolt, the cover member is detachably coupled to the receiving groove;

The concealment member includes a cover part covering the receiving groove and a contact part vertically connected at both sides of the inner surface of the cover part and in contact with an inner wall of the receiving groove,

The upper end of the receiving groove is formed with a stepped portion for accommodating the cover portion so as not to protrude to the surface, and the inner wall of the receiving groove and the outer surface of the contact portion is characterized in that the protrusions and grooves are formed in the male and female coupling,

The outer surface of the support is characterized in that the seating portion is formed is supported by the end of the ceiling finish panel is formed,

A light hole through which the head of the fastening bolt is inserted is formed at the bottom of the receiving groove of the support, and the fastening bolt is configured to fasten the ceiling bar for fixing the base and the ceiling finishing panel to the ceiling, thereby maintaining the luminaire. The base is fixed to the ceiling bar by the fastening bolts, and the maintenance work is possible by disassembling the fixing bolts to separate the cover and the support from the base.

The environmentally friendly LED having an uninterruptible diffusion cover according to the present invention having the above configuration uses an uninterruptible diffusion cover on the bottom of the LED light source so that when the LED light source emits light and the temperature rises up to 80 degrees, the illumination is applied to the diffusion cover. Since there is no sticking of foreign objects, the illumination of the LED light source can be kept constant.

In addition, by using a sunscreen to prevent the discoloration of the diffusion cover due to long-term exposure to ultraviolet rays to maintain a constant illuminance of the LED light source and to overcome the problems of replacing the diffusion cover,

The fastening bolt for fastening to the ceiling bar and the fastening bolt for fastening the base and the support are concealed by the concealing member so as not to damage the appearance, and the concealing member does not protrude to the surface of the support to keep the luminaire frame clean and It can increase the interior effect.

In addition, by removing the concealing member from the receiving groove of the support, and simply unfastening the fixing bolt, the diffusion cover and the support are easily separated from the base. Maintenance work of the failed light source unit, power supply, wiring, etc. is very convenient, and after the maintenance work is completed, the work of installing the diffuser cover and the support back to the base can be performed quickly.

1 is a perspective view of a ceiling buried light fixture frame according to the present invention.
2 is an exploded perspective view of the luminaire frame shown in FIG.
Figure 3 is a cross-sectional view of the luminaire frame of the present invention coupled to the ceiling bar.
4 is a perspective view of a downlight and the like according to another embodiment of the present invention.

Hereinafter, an eco-friendly LED having an uninterruptible diffusion cover according to the present invention will be described in more detail with reference to FIGS. 1 to 3.

As shown in the drawing, an environmentally friendly LED having an uninterruptible diffusion cover is coupled to a base 10, a horizontal portion of the base 10, and a diffusion cover 50 covering the mounting portion 11 of the base 10. It comprises a support 20, the concealing member 30 to support.

The base 10 includes a light source unit (not shown) for emitting light, a power supply (not shown) for converting commercial AC power input from the outside into a lighting power suitable for lighting the light source unit, and an external commercial AC power source. It is supplied to a power supply, and the wiring etc. which supply the lighting power of a power supply to a light source unit are accommodated and mounted.

As the light source unit mounted on the base, an LED mounted on the PCB may be used.

The base 10 is

A bottom portion 12 to which the light source unit, power supply, wiring, etc. are fixedly mounted;

A vertical part 13 connected vertically at an end of the bottom part 12 and forming a mounting part 11 together with the bottom part 12 to accommodate the light source unit and the power supply unit;

A horizontal portion 14 connected in an outer horizontal direction at an end of the vertical portion 13,

It includes a reinforcing portion 15 to be bent vertically toward the bottom portion 12 at the end of the horizontal portion 14 to reinforce the strength of the horizontal portion (14).

The horizontal portion 14 has two insertion holes 141 and 142 into which the fixing bolt 40 and the fastening bolt 40A are inserted.

The support 20 is coupled to the horizontal portion 14 of the base 10 and supports the outer surface of the diffusion cover 50 covering the mounting portion 11 of the base 10.

The diffusion cover 50 covers the mounting portion 11 of the base 10 so that the light source unit is not directly exposed to the outside to prevent the light emitted from the light source unit is directly irradiated into the field of vision, causing glare. Diffuse the light emitted from the light source unit to illuminate a wide range.

The diffusion cover 50 may use acrylic, PC (PC), PMMA (PMMA), most preferably to use the PMA.

As described above, the diffusion cover 50 has a problem in that the impurity is stuck to the diffusion cover 50 when the temperature rises to 80 degrees when the garden is applied to the light source.

Therefore, it is preferable to coat the uninterruptible coating layer 52 on the diffusion cover as shown in Figures 2 and 3, the uninterruptible coating layer 52 is 20-40% by weight of the dispersant, 20-40% by weight of the binder solvent, It is preferable to use a mixture of 20 to 40% by weight of carbon nanowires.

In addition, it is preferable to further comprise 2-3 wt% of the sunscreen based on the uninterruptible coating layer mixture 100% by weight.

The dispersing agent is ethyl alcohol, methyl alcohol, isopropyl alcohol, acetone, methyl ethyl ketone, ethyl isoketone, ethylene glycol, aniline, toluene, chloroform sodium dodecyl sulfate, polyvinyl alcohol, triton-x, hydropropyl cellulose , Hydroxypropyl methyl cellulose can be selected and used,

In the case where two or more dispersants are mixed, it is preferable to use the same dispersant selected by mixing the same weight percent.

The binder solvent is 10-25 parts by weight of polyester or polyester; 70-85 parts by weight of urethane or epoxy; It is preferable to use 1-3 parts by weight of a silane (adhesive enhancer) in combination.

The carbon nanowires are preferably selected from single wall carbon nanotubes, double wall carbon nanotubes, multiwall carbon nanotubes, carbon nanofibers, nanocarbon, graphene, and fullerene.

The carbon nanowire material has an advantage of solving the exfoliation problem and the electric-short problem by coating and dispersing the ceramic-based or polymer resin of the nanoparticles and coating the surface thereof.

The sunscreen agent is an inorganic sunscreen base is 25-50% by weight titanium dioxide, 20-45% by weight neopentyl glycol diethan hexanoate, 20-45% by weight cyclomethicone, and polyglyceryl-6 polysilicate It is preferable to mix and use 1-5 weight% of nolates.

The manufacturing method of the sunscreen is dissolved in an oil phase component consisting of dicaprylyl carbonate, caprylyl methicones, cyclopentasiloxane, and an aqueous phase containing polyol and purified water at 70 ~ 75 ℃, respectively, the oil phase homogenizer While stirring, the sunscreen base is added and sufficiently dispersed at 3000 rpm for 20 minutes. Subsequently, the first emulsification reaction is performed to sufficiently disperse the aqueous phase component at 70 to 75 ° C. and 3000 rpm for 10 minutes. Subsequently, after cooling to 50-60 degreeC, an additive is added and secondary emulsion reaction is performed for 10 minutes at 3000-3500 rpm. After the stirring and cooling (P / M: 25 ~ 35rpm) to complete the production at room temperature (30 ℃).

Coating the uninterruptible mixture has a thickness of 10㎛ to 20㎛, characterized in that the coating is carried out using at least one of a roll coating (Knife Coating) method or a spray coating (Sparay Coating) method It is done.

Roll coating refers to coating a mixed dispersion solution on one side of the expanded graphite sheet through a roller. Knife coating refers to coating a predetermined amount of mixed dispersion solution on one side of the expanded graphite sheet using a knife. By spreading thin to the appropriate amount of thickness refers to coating.

The support 20 is

A horizontal portion 22 covering the horizontal portion 14 of the base 10,

A longitudinal part 23 covering the reinforcement part 15 of the base 10 and vertically connected at one end of the transverse part 22;

An inclined portion 25 connected inclined at the other end of the horizontal portion 22 to support and pressurize and support an outer surface of the cover 50;

It comprises a receiving groove 21 is formed concave in the longitudinal direction in the transverse portion (22).

And the outer end (ie, the upper end) of the receiving groove 21 is formed with a stepped portion 26 for receiving the concealed member 30 covering the receiving groove 21 does not protrude to the horizontal portion 22 surface, On both sides of the inner wall of the accommodating groove 21, protrusions 27 are formed to be male and female coupled to the groove 37 of the concealing member 30.

And the end portion (ie, the bottom) of the longitudinal portion 23 is formed with a seating portion 24, the end of the ceiling finish panel 60 is seated and supported.

And the fixing bolt 40 is inserted into the bottom of the receiving groove 21 of the support 20, the head 41 is caught by the narrow hole 211 and the fastening bolt 40A is inserted through the head 41A The light hole 212 to be received is formed.

The base 10 and the support 20 are fixedly coupled to the fixing bolt 40, and the base 10 is fixedly fastened to the ceiling bar 70 provided on the ceiling by the fastening bolt 40A.

The head 41 of the fixing bolt 40 is accommodated in the receiving portion 21 of the support 20, the head 41A of the fastening bolt 40A is the horizontal portion 14 of the base 10 And is interposed between the support 20.

The concealing member 30 is coupled to the holder 21 of the support 20 to cover the head 41 of the fixing bolt 40 accommodated in the receiving groove 21, detachably coupled to any Even when the fixing bolt 40 can be easily fastened or detached.

The concealment member 30 and the cover portion 31 to cover the receiving groove 21,

Two contact portions 32 vertically connected to both sides of the inner surface of the cover portion 31 and in contact with the inner wall of the receiving groove 21;

A groove 37 is formed on an outer surface of the contact portion 32 and is male and female coupled to the protrusion 27 protruding from the inner wall of the accommodation groove 21.

The protrusions 27 and the grooves 37 may reverse their positions. That is, the protrusion 27 is formed in the concealment member 30 and the groove 37 may be formed in the inner wall of the receiving groove 21 may be male and female mutually.

The concealment member 30 coupled to the longitudinal receiving groove 21 of the support 20 is fixed to the support with a central portion as an adhesive, as shown in the lower figure of Figure 1, both sides are removable from the receiving groove (21). Can be combined.

Thus, after the center portion of the concealment member 30 is fixed to the support 20, both sides are lifted and separated from the receiving groove 21, and then fastened and fixed to the ceiling bar 70 of the ceiling, and the sides of the concealment member are received again. It can be coupled to the groove (21).

Figure 3 is a cross-sectional view showing a state in which the luminaire frame is installed on the ceiling bar 70 fixed to the ceiling according to the present invention, [A] is a state diagram installed on the 'M' type ceiling bar, [B] is' T 'It is a state diagram installed on the ceiling bar.

In the case of the 'M' type (including 'C' type modified 'M' type) ceiling bar 70, one side is fixed to the ceiling finishing panel 60, the other side is fixed to the luminaire body frame according to the present invention do.

At this time, the fixing of the luminaire frame and the 'M' type ceiling bar 70 of the present invention is the fastening bolt 40 through which the light hole 212 of the support 20 is inserted into the 'M' type ceiling bar 70. Screwed to the connection portion 71 of the fixed. An end of the finishing panel 60 is seated and supported by a seating part 24 formed on an outer surface of the support 20.

And in the case of the 'T' type ceiling bar 70, the ceiling finishing panel 60 is mounted and fixed to the wing portion 73 on one side, the body frame of the luminaire according to the present invention is mounted on the other wing portion 73 Raised and fixed.

In the case of the 'T' type ceiling bar 70, since the body frame of the present invention is mounted on the wing portion 73, it is not necessary to use the fastening bolt 40A, but in the case of the 'T' type ceiling bar 70 When the body frame is not mounted on the wing portion 73 and is fixed to the bolt under the wing portion 73, the fastening bolt 40A will be used to fix the frame to the ceiling bar 70.

In this way, when the fastening bolt 40A is used to fix the base 10 to the ceiling bar 70 without the involvement of the support 20, various components (LED, ballast, wiring, etc.) built into the base 10 are fixed. Maintenance work for repair, repair, etc.

The concealment member 30 is separated from the receiving groove 21, and the fixing bolt 40 is disassembled to separate only the diffusion cover 50 and the support 20, that is, the base 10 is the ceiling bar 70. It is fixed to and the opening of the base (10) is open, so that the maintenance work is possible in a state where various parts are exposed, convenient and quick maintenance work is possible, and after the maintenance work is completed, the diffusion cover 50 and Reassembling the support 20 and the concealment member 30 to the base 10 can also be convenient and quick.

The result of measuring the surface electrical resistance of the uninterruptible diffusion cover 50 according to the present invention is as follows.

Sample Name: Anti-static PMMA

Test result

Table 1

Table 2 (Chemical Resistance)

Experiment Result Analysis

Ω/㎠이하로 떨어 지는 것으로 확인 되어 정전기가 방지됨을 알 수 있고, 내약품성 실험결과를 보아도

Ω/㎠ 이상으로 올라가지 않음을 확인 할 수 있었다. In case of coating the uninterruptible coating layer on the diffusion cover of the non-conductive PMA material, the electrical resistance of the surface of the transparent film 50 is reduced due to the tunneling effect.

It is confirmed that it falls below Ω / ㎠ and it can be seen that the static electricity is prevented.

It could be confirmed that it did not rise above Ω / ㎠.

Ω/㎠이하이면, 충분한 정전기 방지 효과를 나타내는 것으로 알려져 있다. 참고로, 미국 밀스펙(military spec)상 정전기 그레이드(Anti-static grade)는

Ω/㎠이상

Ω/㎠ 미만이다.
Practically no surface electrical resistance

If it is ohm / cm <2> or less, it is known to show sufficient antistatic effect. For reference, the anti-static grade in the US mill spec is

Ω / ㎠ or more

Less than Ω / cm 2.

Therefore, it can be said that the diffusion cover 50 according to the present invention can be used as an uninterruptible diffusion cover.

The results of measuring the UV blocking result of the UPS according to the present invention is as follows.

The Water Resistant effect of the sunscreen of the Examples of the present invention was measured. 100 mg of the sample was applied to 50 cm 2 inside both forearms of the tester, and after 20 minutes, the right arm was soaked in 25 ° C. water for 20 minutes and dried for another 20 minutes. Four such cycles were performed to allow for a total of 80 minutes of soaking in water. The test area of both arms was wiped off with alcohol and chromatographed (Waters 2695 / Waters 2487, United States of America) was used to measure the amount of sunscreen remaining. Three testers were used for each sample and the mean value was calculated.

In this case, it can be seen that the amount of the sunscreen remaining 97% is effective for the sunscreen effect.

In the above description of the present invention has been described with respect to the ceiling-embedded (LED lighting) luminaire body frame having a specific shape and structure with reference to the accompanying drawings, the present invention can be variously modified and changed by those skilled in the art, such variations and Changes should be construed as falling within the protection scope of the present invention.

10: Body 11: Mounting part
12: bottom portion 13: vertical portion
14: horizontal portion 15: reinforcement portion
20: support 21: receiving groove
22: horizontal part 23: vertical part
24: seating portion 25: inclined portion
26: step 27: projection
30: hiding member 31: cover
32: contact 37: groove
40: fixing bolt 41: head
40A: Tightening bolt 41A: Head
50: diffusion cover 52: uninterrupted coating layer
60: finishing panel 70: ceiling bar 71: connection portion

Claims (4)

A base having a mounting portion to which the light source unit is mounted, and a horizontal portion forming the mounting portion;
Is coupled to the horizontal portion of the base, the support for supporting the diffusion cover covering the mounting portion of the base;
The diffusion cover further includes an uninterrupted coating layer,
The uninterruptible coating layer
Ethyl alcohol, methyl alcohol, isopropyl alcohol, acetone, methyl ethyl ketone, ethyl isoketone, ethylene glycol, aniline, toluene, chloroform sodium dodecyl sulfate, polyvinyl alcohol, triton-x, hydropropyl cellulose, hydroxy 20-40% by weight of a dispersant in which 50 parts by weight of the selected dispersant is mixed with each of the selected dispersant or two dispersants selected from propyl methyl cellulose;
10-25 parts by weight of polyester or polyester; 70-85 parts by weight of urethane or epoxy; 20-40% by weight of a binder solvent obtained by mixing 1-3 parts by weight of silane (adhesive enhancer);
Single-walled carbon nanotubes, double-walled carbon nanotubes multi-walled carbon nanotubes, carbon nanofibers, nanocarbon, graphene, characterized in that the coating is a mixture of 20-40% by weight of carbon nanowires selected from Eco-friendly LED lamp with uninterruptible diffusion cover.
The method of claim 1,
100% by weight of the uninterruptible coating layer mixture is made of a sunscreen further comprises 2-3% by weight,
The sunscreen is 25-50% by weight of titanium dioxide, 20-45% by weight of neopentylglycol diethylhexanoate, 20-45% by weight of cyclomethicone, and polyglyceryl-6 polyricinoleate 1-5 Eco-friendly LED light having an uninterruptible diffusion cover, characterized in that the mixture by weight%.
The method of claim 1,
An environmentally friendly LED lamp having an uninterruptible diffusion cover, characterized in that the thickness of the uninterruptible mixture coated on the diffusion cover is 20-70㎛.
The method according to any one of claims 1 to 3,
In the longitudinal direction of the support is formed a receiving groove for receiving the head of the fixing bolt for fastening the horizontal portion of the base and the support,
Covering the receiving groove to conceal the fixing bolt, the cover member is detachably coupled to the receiving groove;
The concealment member includes a cover part covering the receiving groove and a contact part vertically connected at both sides of the inner surface of the cover part and in contact with an inner wall of the receiving groove,
The upper end of the receiving groove is formed with a stepped portion for accommodating the cover portion so as not to protrude to the surface, and the inner wall of the receiving groove and the outer surface of the contact portion is characterized in that the protrusions and grooves are formed in the male and female coupling,
The outer surface of the support is characterized in that the seating portion is formed is supported by the end of the ceiling finish panel is formed,
A light hole through which the head of the fastening bolt is inserted is formed at the bottom of the receiving groove of the support, and the fastening bolt is configured to fasten the ceiling bar for fixing the base and the ceiling finishing panel to the ceiling, thereby maintaining the luminaire. In the state in which the base is fixed to the ceiling bar by the fastening bolt, disassembling the fixing bolt to separate the diffusion cover and the support from the base, and the maintenance work is possible. Eco-friendly LEDs.

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