KR101293172B1 - Illuminating member and lighting device using the same - Google Patents

Abstract

The present invention relates to a luminaire that can reduce the Unified Glare Rating (UGR).
In particular, it is possible to increase the reflection efficiency by using the air gap to the light scattering large left and right among the light applied through the diffuser plate to the air gap. To this end, by implementing a binding unit that directly bonds the adhesion interface of the diffusion plate and the optical plate to remove the process of implementing the pattern as a separate structure to increase the process efficiency and to reduce the UGR.

Description

Lighting member and lighting device using the same {ILLUMINATING MEMBER AND LIGHTING DEVICE USING THE SAME}

The present invention relates to a luminaire that can reduce the Unified Glare Rating (UGR).

Lighting (lighting) is an act or function that uses various light sources and brightens a specific place for any purpose, and is often used to lighten the environment at night or in the dark.

1 is a cross-sectional view of a flat panel lighting apparatus according to an example of the prior art. Referring to FIG. 1, a lighting apparatus according to the related art includes a light source 10 and a louver or a reflector 20. The light source 10 may be an incandescent lamp, LED, CCFL, or the like. Referring to FIG. 1, the angle of light indicated by the dotted line is transmitted to the person, causing visual discomfort. Such a lighting device can mechanically reduce the UGR, but this is not aesthetic or complete flat lighting.

2 is a cross-sectional view of a flat panel lighting apparatus according to an example of the prior art.

Referring to FIG. 2, the lighting device 30 includes a light source 10 and a diffuser plate 40 that diffuses light emitted from the light source 10. Light emitted from the light source 10 is emitted to the outside via the diffusion plate 40. The diffuser plate 40 is used to reduce hot spots of the light source 10 and to uniformly emit light. Although the diffuser plate 40 is used, as shown in FIG. 2, the light at an angle indicated by the dotted line still causes discomfort to the human eye. That is, since the diffuser plate 40 scatters the light up to the direction in which the UGR is high, glare occurs and the user's eyes are tired, which does not meet the standard of the indoor flat panel lighting device.

Therefore, it is important to reduce glare in indoor flat panel lighting. The degree of malaise due to the glare is expressed using a constant called UGR (Unified Glare Rating). In other words, UGR is a quantitative measure of the level of discomfort for people who use lighting.

UGR is calculated as the value of the luminous flux from 65deg to 90deg when the direction facing the floor from the ceiling where the lighting device is installed is 0deg and the direction parallel to the ceiling is 90deg. In other words, reducing the speed of light from 65deg to 90deg reduces glare. In Europe and the United States, URG must be 19 or less to be used as an indoor lighting device.

As such, most indoor flat panel lighting devices currently in use reduce the angle of light spreading over a wide range affecting the UGR by using a reflector or louver or by filling the entire lighting device. According to this prior art, even if the diffusion plate is used, the effect of the hot spot can be reduced, but there is still a problem that is not suitable for the UGR standard of 19 or less.

The present invention has been made to solve the above-described problems, an object of the present invention is to bond the interface of the optical plate in close contact with the diffusion plate through a binding portion that directly binds by a method such as welding, welding, fusion, etc. Lighting member and lighting fixture using the same material which can reduce the cost of bonding process by using materials of different materials and improve the reliability of adhesion and further reduce the failure rate caused by different adhesion medium and thermal expansion coefficient. To provide.

As a means for solving the above problems, the present invention includes a diffuser and a binding portion that directly binds to one surface of the diffuser plate to form an air gap, the illumination including an optical plate including an optical pattern for condensing light To provide the member.

In addition, the structure including the above-described lighting member, and includes a printed circuit board mounted with a light source, a frame portion formed around the region where the light source is disposed, and an insertion portion into which the diffusion plate and the optical plate are simultaneously inserted into the frame portion. However, a light fixture having a structure that forms a binding portion that directly bonds the contact interface between the diffusion plate and the optical plate to form an air gap may be implemented.

According to the present invention, by combining the interface of the optical plate in close contact with the diffusion plate through a binding portion that is directly bonded by welding, welding, welding, etc., the cost of the bonding process is reduced by using materials of different materials such as adhesive media. At the same time, it improves the reliability of the adhesion, and furthermore, there is an advantage in that the defect rate caused by the adhesion medium and the thermal expansion coefficient is different can be significantly reduced.

In particular, the process of implementing the pattern as a separate structure while increasing the reflection efficiency by using the binding portion forming the air gap light scattered largely left and right among the light applied to the air gap through the diffusion plate. Elimination can increase process efficiency and reduce UGR.

In addition, the microlens pattern is formed to include an optical plate that implements a light condensing function to collect the light passing through the air gap in the downward direction to further reduce the UGR.

1 is a cross-sectional view of a flat panel lighting apparatus according to an example of the prior art.
2 is a cross-sectional view of a flat panel lighting apparatus according to an example of the prior art.
3 is a conceptual diagram showing the structure of a lighting member according to the present invention.
4 and 5 illustrate various embodiments of the lighting member binding unit according to the present invention.
6 and 7 show an exploded perspective view and a combined perspective view of the luminaire according to the present invention, respectively.
Figure 8 shows one embodiment of the structure of an optical plate applied to the lighting apparatus according to the present invention.
9 illustrates a sag of a unit lens pattern.
10 is a graph illustrating a relationship between URG and sag, and FIG. 11 is a diagram illustrating a relationship between light efficiency and sag.
FIG. 12 illustrates a result of adjusting a fill factor of a microlens pattern for reducing UGR in the structure of the optical plate according to the present invention shown in FIG. 8.
13 is a UGR simulation (simulation) result of the fill factor of the micro lens pattern of the optical plate according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description with reference to the accompanying drawings, the same reference numerals denote the same elements regardless of the reference numerals, and redundant description thereof will be omitted. The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

Referring to FIG. 3, the lighting member according to the present invention includes a diffusion plate 110 and a binding unit 130 which directly binds to one surface of the diffusion plate to form an air gap 132, and collects light. It may be configured to include an optical plate 120 including a pattern (124).

In particular, the diffusion plate 110 and the optical plate 120 is not separated by a separate partition member, the portion in close contact with one surface of the diffusion plate is formed in a structure that directly binds one surface of the optical plate. Herein, one surface of the diffusion plate and one surface of the optical plate means a close contact surface of the diffusion plate and the optical plate, and an optical pattern is provided on the other surface opposite to the one surface of the optical plate. In this case, the optical pattern may be a microlens array pattern 124 formed on the base substrate 122. In addition, "direct bonding" means that the interface between the diffusion plate and the optical plate is bonded and bonded by welding, welding, fusion, or the like, without using a separate adhesive member.

As a method of directly binding the interface between the diffusion plate and the optical plate, a method of welding, welding, or fusion may be applied using any one of laser, ultrasonic wave, heat, rotation, and vibration.

In particular, the binding unit 130 of the diffusion plate 110 and the optical plate 120 is formed in an integral structure or a separate structure at the outer edge of the interface between the diffusion plate and the optical plate, or separated from other regions at the interface. At least one unit air gap may be formed.

Such a structure having the binding unit 130 according to the present invention enables to form an air layer (air gap) between the diffusion plate 110 and the optical plate 120 without using a separate adhesive member. do. This makes it possible to directly reduce the diffusion plate and the optical plate to be bonded without using other materials for adhesion, thereby reducing the cost without using materials.

In addition, when the adhesive material is used, an additional step of implementing the adhesive material as a barrier rib structure for maintaining a constant gap between the diffusion plate and the optical plate may be eliminated, and the defect rate caused by the additional step may be reduced, and It is possible to secure the reliability of. In addition, it is possible to further facilitate the process automation by eliminating the additional process of forming the partition structure with such an adhesive material.

Furthermore, the adhesive material having a different thermal expansion coefficient is not used between the diffusion plate and the optical plate to be bonded, thereby eliminating the distortion problem due to the difference in thermal expansion coefficient. Further, more preferably, the diffusion plate and the optical plate may be formed of the same material or may be formed of the same material as the thermal expansion coefficient.

4 and 5 show an example of the formation of the binding unit according to the present invention.

Formation of the binding unit 130 according to the present invention is to align the diffusion plate and the optical plate (110, 120) facing, and the interface of the optical plate in contact with one surface of the diffusion plate laser, ultrasonic wave, heat, rotation, It can be realized by directly binding by welding, welding, fusion using any one method of vibration.

In this case, the binding unit 130 has a structure in which an air gap is formed therein by forming an integral structure at an outer edge portion of an interface of the diffusion plate and the optical plates 110 and 120 as shown in FIG. 4A. It can be implemented as.

In addition, the structure of the above-described air gap, as shown in Figures 4b and 4c, may form a binding portion 130, it may be implemented in a structure in which a plurality of unit air gap (132a, 132b, 132c) is formed.

In addition, the structure of the unit air gap in the illustrated structure, in addition to the formation of a number of independently closed structures, as shown in Figure 4d, the region where the air gap is formed by the pattern of the binding portion 130 is different region It may be implemented in the form of a structure (132d) that is separated from the (132e).

In addition, as shown in FIGS. 5A to 5F, the binding unit 130 directly binds the interface of the optical plate in contact with one surface of the diffusion plate, but is formed in a separate structure at the interface of the diffusion plate and the optical plate. The pattern P ₁ to P ₄ may be implemented.

In particular, as shown in FIG. 5D, the shape of the binding unit 130 formed in the diffusion plate 110 is disposed on the bottom surface of the diffusion plate 110 in a first direction or in a second direction perpendicular to the first direction. It may be implemented by a plurality of rib patterns (P ₃ , P ₄ ), or may be implemented by a dot pattern (P ₄ ) to ensure the reliability of the adhesive.

As described above, the conventional method of forming the air gap between the diffusion plate and the optical sheet by forming a partition on the diffusion plate has a structural problem of forming the partition wall, attaching the partition wall, or the reliability of adhesion after the attachment. In the case of attaching and implementing the binding unit according to the present invention, the air gap can be realized at the same time as the adhesion, thereby simplifying the process and improving the performance.

6 shows an embodiment of a luminaire comprising a lighting member according to the present invention.

6 and 7 show an exploded perspective view and a combined perspective view of a luminaire according to the present invention, respectively.

In the lighting device according to the present invention, a printed circuit board having a light source mounted thereon and a frame part T formed around a region where the light source is disposed and a diffusion plate 110 and an optical plate 120 are simultaneously inserted into the frame part. It can be configured to include an insert. That is, the diffusion plate and the optical plate are bonded to the insertion portion of the single groove structure formed inside the frame portion T to form the binding portion 130, and is characterized in that the structure is inserted and fixed at the same time stacked structure.

In particular, one surface of the diffusion plate 110 or the optical plate 120 included in the luminaire according to the present invention has a binding portion which is directly bonded at the interface as described above, implements an air gap, and passes through the air gap. It is preferable that the coupling structure of the optical plate 120 for concentrating a light is implemented.

For example, the structure of FIG. 6 illustrates a structure in which the frame parts H and T are separated. However, the frame parts H and T are integrally formed, but the frame parts H and T are illustrated in FIG. The diffusion plate 110 and the optical plate 120 may be formed by mounting one groove to be inserted at the same time. When the diffusion plate and the optical plate are inserted at the same time in a stacked structure, the diffusion plate and the optical plate contact surface are directly bonded to each other via a binding part as described above with reference to FIGS. An air layer (hereinafter, referred to as an 'air gap') is formed between the optical plates, thereby making it possible to improve optical characteristics.

Hereinafter, an embodiment of configuring a frame unit implemented as a separate structure in addition to the frame of the integrated structure will be described.

That is, the structure illustrated in FIGS. 6 and 7 forms the frame parts H and T as the first frame H and the second frame F in a separable manner, and implements the separation part in the structure combining the same. Implement the structure to form an insert, but allows the diffusion plate 110 and the optical plate 120 to be inserted at the same time at the same time, the binder 130 on the interface between the diffusion plate 110 and the optical plate. It can be implemented so that the bonding and air gap can be formed without a separate structure.

Specifically, the luminaire according to the present invention includes a first frame H and a border partition wall including a base portion H1 on which a printed circuit board on which the light source is mounted is disposed, and a border partition wall H2 formed on an outer surface of the base portion. Separation structure including an outer frame T1 having a structure corresponding to H2 and having a central portion T2 opened, and a second frame T having a guide frame T3 bent toward the central portion from the outer frame. You can also implement Particularly, in this case, a spaced portion (220 in FIG. 7) is formed in a coupling structure of the first frame and the second frame, and the diffusion plate 110 and the optical plate 120 can be inserted and fixed at the same time. do. That is, the light diffusing plate 110 and the light collecting optical plate 120 formed with a microlens pattern, one end of which is fixed to the guide frame T3 of the configuration of the second frame (T), but includes the diffusion It is possible to form an air gap by binding the optical plate with the plate.

In particular, the first frame (H) is formed in a front structure (opening the front portion) corresponding to the base portion (H1) in which the edge partition wall (H2) is formed, inside the base portion (H1) in which the edge partition (H2) is formed The printed circuit board P on which the light source is mounted is disposed on the surface. In addition, it is more preferable that a reflective layer (not shown) is further formed on the surface of the printed circuit board and the inner surface of the lighting main body to increase the light reflection efficiency.

In addition, the second frame T formed to cover the edge partition H2 of the first frame H from the top has a shape corresponding to the edge partition wall of the first frame H and is fitted therein. Will be combined. The diffusion plate 110 and the optical plate 120 are coupled in a structure that is fixed to the insertion portion formed by the upper portion of the edge partition wall and the second frame (T), in this case the center of the upper frame (T) The surface of the optical plate 120 is exposed.

Referring to FIG. 7, the boundary partition wall H2 of the first frame H of the present invention is a partition structure that is erected in a direction perpendicular to a base portion, and a partition wall is formed in a horizontal direction on a partition wall on an upper portion of the border partition wall H2. The support portion H3 may protrude. A portion of the barrier rib support portion H3 on the upper surface of the edge barrier rib H2 may be coupled to the second frame T in a structure supported by the support.

Particularly, in the present invention, the configuration of the second frame T may be implemented by an outer frame T1 formed in a direction perpendicular to the ground and a guide frame T3 formed by being connected to the outer frame. .

In particular, the guide frame T3 has a step D formed between the first guide portion 210 and the first guide 210 portion in which the upper edge of the edge partition and one end of the guide frame are in close contact with each other. It may be formed of a structure having a second guide portion 230 for implementing a spaced portion 220 spaced apart from the surface. The spacer 220 has the above-described insertion portion such that the diffusion plate 110 and the optical plate 120 are inserted into and stacked in a single groove at the same time. That is, one end of the diffusion plate 110 and the optical plate 120 is inserted into and adjusted to the spacer 220 formed by the upper surface of the edge partition H2 and the guide frame T3. In particular, the bonding surface of the diffusion plate and the optical plate may be implemented by the binding unit described above with reference to FIGS.

In the air gap, the light emitted from the light source passes through the diffusion plate 110, and the light passing through the diffusion plate is refracted by the air gap and enters the optical plate 120 at the bottom, thereby passing through the diffusion plate. Therefore, the light scattered greatly to the left and right among the light applied to the air gap is refracted to be incident on the optical plate, thereby reducing the UGR.

In particular, a microlens pattern array is formed on one surface of the optical plate 120 according to the present invention to condense the light passing through the air gap to the part to diffuse the light, and at the same time refracts the light passing through the air gap again. It can be used to adjust the value of UGR.

8 illustrates an embodiment of a structure of an optical plate applied to the lighting apparatus according to the present invention described above.

Preferably, the optical plate 120 according to the present invention basically includes a plurality of micro lens patterns 124 formed on the base substrate 122.

In particular, in order to reduce the UGR using the optical plate on which the micro lens pattern 124 is formed, the UGR may be reduced by adjusting the sag of the lens pattern in this embodiment. Referring to FIG. 11, FIG. 8 is a diagram illustrating a sag of a unit lens pattern. As shown in FIG. 11, a sag represents a height b of the lens with respect to the diameter a of the lens, which can be expressed as follows.

{1}

The higher the sag of each lens of the micro lens pattern array MLA, the more the light is refracted in the direction from the ceiling to the floor, thus reducing the URG.

However, when the sag of the lenses of the microlens array has a certain period, side light leakage phenomenon called side-lobe occurs, which does not satisfy the UGR condition. In addition, as the sag of the lenses increases, a recycling phenomenon in which the light is returned toward the incoming light becomes more severe, resulting in a lot of reflection, which results in a decrease in light efficiency.

That is, if the sag of the lens is too high (sag is 0.35 or more), the UGR condition is satisfied but the light efficiency is lowered. Also, if the sag of the lens is too low (sag is less than 0.1), the light efficiency decrease is minimized but does not satisfy the UGR condition.

As such, when the light divergence angle range is excessively narrowed to reduce the UGR, that is, when the sag of the lens is too high, the light efficiency is reduced and the area to which light is irradiated is also reduced. In this case, more illuminators are required to illuminate the same area as compared to illuminators with low sag of the lens. In other words, the higher the sag of the lens, the lower the UGR, but the light efficiency is also reduced in size (less than 90% of the diffuser).

Therefore, sag of the lenses of the micro lens array which minimizes the light efficiency while maintaining the light irradiation area while maintaining the UGR standard should be determined.

FIG. 10 is a graph showing a relationship between URG and sag, and FIG. 11 is a diagram showing a relationship between light efficiency and sag.

10 and 11 show the case where the area of the lighting device is 600 × 600 mm and the brightness of the lighting device is 400 lux.

Referring to FIG. 10, the range of sag of lenses having a UGR of 19 or less, which is an indoor lighting condition, is 0.1 to 0.22 or 0.35 to 0.5. In the sag range of 0.25 to 0.35, the UGR increases rather than the side lobe due to light leakage between 65 and 90 deg. Therefore, sag of 0.25 ~ 0.35 of lens does not satisfy indoor lighting condition with UGR of 19 or less.

In addition, referring to FIG. 11, it can be seen that the higher the sag of the lenses, the lower the luminous flux and thus the lower the light efficiency. Therefore, considering the light efficiency, sag of the lenses is most preferably determined in the range of 0.1 ~ 0.25 or 0.35 ~ 0.5. As such, when the sag of the lenses is determined to be low, that is, within the range of 0.1 to 0.25 or 0.35 to 0.5, the UGR can be reduced and the light efficiency can be minimized.

FIG. 12 illustrates a result of adjusting a fill factor of the microlens pattern 124 to reduce UGR in the structure of the optical plate according to the present invention shown in FIG. 8.

That is, as another method for tuning UGR reduction using the optical plate according to the present invention, it may be implemented by adjusting the fill factor of the micro lens pattern 124 according to the present invention. In this case, the fill factor of the micro lens pattern 124 according to the present invention is characterized by satisfying 0.5 to 1.0. (In this case, fill factor is defined as the ratio of microlens pattern area to unit base substrate area.)

In this case, as described above with reference to FIG. 10, by adjusting the fill factor occupied by the microlens pattern area per unit base area in the range of 0.5 to 1.0, the luminous flux decreases in a specific sag range, thereby preventing luminous flux degradation and reducing UGR. The effect of making it possible is implemented.

In the present invention, the fill factor (fill factor) of the micro lens pattern formed on the surface of the optical plate 120 that transmits light is implemented to 50% ~ 100% to reduce the UGR when transmitting the light source. In the illustrated structure, although the shape of the microlens pattern is uniformly arranged in the same shape and size, the microlens pattern having different shapes may be differently arranged. In addition, the lens shape may have a shape of any one of a circle, an ellipse, a prism, a lenticular, and an R-prism. In particular, in the case of the fill factor 100%, the cross-sectional shape of the lens pattern, not the circular structure, may be implemented as a polygonal structure (hexagonal, octagonal, etc.).

12 and 13, this is a UGR simulation result according to the fill factor of the micro lens pattern of the optical plate according to the present invention. (Lens size: 80 μm, based on lens sag: 0.45).

Looking at the results shown, as the fill factor of the lens pattern in the same sag can be seen that the UGR is lowered. In particular, as described above in the prior art, UGR 19 or less can be applied to the lighting device, but the structure of tuning the fill factor of the lens pattern of the optical plate according to the present invention can implement a UGR value in the range of 16.0 ~ 17.0 Can be.

In particular, as described above in the prior art, it can be applied to the lighting device only when UGR 19 or less is satisfied. In this regard, the structure in which the fill factor of the lens pattern of the optical plate of the present invention is adjusted from 50% to 82% can realize a UGR value in the range of 16.3 to 17.3. Of course, when implementing the fill factor up to 100% by implementing 82% or more, the UGR value is further lowered.

Of course, when the fill factor is less than 50%, the UGR value may be less than 19, but in this case, the haze of the lens constituting the optical plate is lowered, thereby increasing the light transmittance. This causes a problem that the hot spot (light spot) by the light source such as the LED is visible to the outside of the luminaire, and the light condensing effect of the lens is also greatly reduced, which can not be implemented as a luminaire.

In addition, the base substrate 122 of the optical plate 120 may basically use a synthetic resin of a transparent material, for example, may be any one of PC, PMMA and PET film. The microlens pattern 124 formed on the surface of the base substrate 122 may be integrally formed on the surface of the base substrate 122 or may be embodied by a process of coating and patterning a separate resin. For example, the transparent plate may be heat and The lens pattern may be integrally formed by molding using pressure, or may be formed by applying resin on the transparent plate and curing using heat or light. The microlens pattern 124 preferably has a unit lens pattern having a size of 20 μm to 80 μm, and the Sag (height (H): lens diameter (R)) of the micro lens pattern is 0.1 to 0.5. It is desirable to meet.

In particular, the fill factor of the microlens pattern is tuned in the range of 0.5 to 1.0, and the sag of the microlens pattern is formed in the range of 0.1 to 0.25 or 0.5 to 0.5 to satisfy the UGR 19 or less. In particular, the present invention shows a result that the UGR is lowered by increasing the fill factor of the microlens pattern array in the same sag. In the region where the sag of the lens pattern is high (0.35 ~ 0.5), the UGR is lowered and the light efficiency is lowered. Bar can be prevented, sag is more preferably formed in the range of 0.1 ~ 0.25. This enables the implementation of a luminaire that can further adjust the UGR value by adjusting the fill factor in a sag of a specific value.

In the foregoing detailed description of the present invention, specific examples have been described. However, various modifications are possible within the scope of the present invention. The technical idea of the present invention should not be limited to the embodiments of the present invention but should be determined by the equivalents of the claims and the claims.

110: diffuser plate
120: optical plate
122: base
124: microlens pattern
130: binding part
132: air gap
210: first guide part
220: spacing
230: second guide part
H: 1st frame
H1: base
H2: Border bulkhead
T: 2nd frame
T1: outer frame
T2: center
T3: guide frame
P: printed circuit board

Claims (22)

Diffuser plate; And
An optical plate including an optical pattern for directly condensing one surface of the diffusion plate to form an air gap, and formed on the other surface of the surface on which the binding portion is formed to condense light;
Lighting member comprising a.
The method according to claim 1,
The binding portion,
Illuminating member formed by directly binding the interface of the optical plate in contact with one surface of the diffusion plate using any one method of laser, ultrasonic wave, heat, rotation, vibration.
The method according to claim 1,
The binding portion,
While directly binding the interface of the optical plate in contact with one surface of the diffusion plate,
Lighting member implemented in a pattern formed in an integral structure or a separate structure of the outer edge portion of the interface between the diffusion plate and the optical plate.
The method according to claim 1,
The binding portion,
While directly binding the interface of the optical plate in contact with one surface of the diffusion plate,
And at least one unit air gap formed at the interface to be separated from other regions.
The method according to claim 1,
The binding portion,
Illumination member having a structure in which at least one separation pattern is uniformly or non-uniformly arranged on a lower surface of the diffusion plate or the optical plate.
The method according to claim 5,
The binding portion,
The diffusion plate and the optical plate is a lighting member of a material having the same coefficient of thermal expansion.
A printed circuit board on which a light source is mounted;
A frame part formed around a region where the light source is disposed; And
Includes; the insertion portion is inserted into the diffusion plate and the optical plate at the same time inside the frame portion,
An illumination member including a binding part directly bonding the diffusion interface between the diffusion plate and the optical plate to form an air gap and an illumination member for forming an optical pattern for condensing light on the other surface of the optical plate on which the binding part is formed. Instrument.
The method of claim 7,
Wherein:
And at least one structure patterned to form an independent unit air gap separating the binding portion from other portions at the interface.
The method of claim 7,
Wherein:
The binding unit is a lighting fixture formed in a pattern of a separate structure on the interface.
The method of claim 7,
The binding portion,
The luminaire is formed by directly binding the interface between the diffusion plate and the optical plate using any one of laser, ultrasonic wave, heat, rotation, vibration.
The method of claim 7,
The binding portion,
At least one separation pattern is uniformly or non-uniformly disposed on the bottom surface of the diffusion plate or the optical plate.
The method of claim 11,
The binding portion,
And a plurality of rib patterns arranged in a first direction or a second direction perpendicular to the first direction at an interface between the diffusion plate and the optical plate.
The method of claim 7,
The frame unit includes:
A first frame accommodating the printed circuit board; and
A second frame coupled to the first frame in a separation structure, the second frame implementing the insertion part by forming a separation part at a coupling part;
Lighting fixtures, including.
The method of claim 7,
The optical pattern formed on the optical plate inserted into the inserting portion is a microlens pattern.
The method according to claim 13,
Wherein the first frame comprises:
A base part on which the printed circuit board is disposed;
Lighting fixture including an edge partition wall formed on the outer shell of the base portion.
The method according to claim 15,
Wherein the second frame comprises:
An outer frame corresponding to the edge partition wall and having an open center;
And a guide frame that is bent toward the center portion of the outer frame to form the first frame and the spacer.
18. The method of claim 16,
The guide frame,
A first guide part in which an upper portion of the edge partition wall is in close contact with one end of the guide frame; and
And a second guide part configured to form a step at the first guide part to be spaced apart from the upper surface of the edge partition wall.
One end of the diffusion plate and the optical plate is fixed to the separation unit.
The method according to claim 14,
The optical plate,
It has a plurality of micro lens pattern formed on the base substrate,
A luminaire having a Sag (height (H): lens diameter (R)) of the micro lens pattern in a range of 0.1 to 0.25 or 0.35 to 0.5.
The method according to claim 14,
The optical plate,
It has a plurality of micro lens pattern formed on the base substrate,
A luminaire having a fill factor of the micro lens pattern in a range of 0.5 to 1.0.
19. The method of claim 18,
A luminaire having a sag (height (H): lens diameter (R)) of the micro lens pattern in a range of 0.1 to 0.5.
The method according to claim 14,
The size of the unit lens pattern of the micro lens pattern is 20㎛ ~ 80㎛.
The method according to claim 14,
The optical plate and the diffuser plate is made of the same material.

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