KR20130012617A - Lighting module - Google Patents

Abstract

PURPOSE: A lighting module is provided to control a light path inside by reflecting light through a reflector. CONSTITUTION: A first and a second light source unit emit light. A first and a second case(150a,150b) stores the first and the second light source unit. A first optical plate(110a) and a second optical plate are arranged between the first and the second case. A reflector is arranged between the first and the second case. The first case includes a reflecting surface. The reflection surface reflects light emitted from the first light source unit. The reflector reflects light reflected from the reflecting surface of the first case to the first and the second optical plate.

Description

Lighting module {LIGHTING MODULE}

Embodiments relate to a lighting module.

In general, a lot of bulbs or fluorescent lights are used as indoor or outdoor lighting, such a bulb or fluorescent lamp has a short life and has to be replaced frequently. In addition, the conventional fluorescent lamp has a problem that excessively decreases the illuminance due to deterioration over the use time.

In order to solve this problem, a light emitting diode (LED), which has excellent controllability, fast response speed, high electro-optical conversion efficiency, long life, low power consumption, high brightness, and emotional lighting, is used. Various types of lighting modules have been developed.

Korean Patent Publication No. 2009-0100004 (Published: 2009.09.23)

Embodiments provide an illumination module that simultaneously emits light up and down.

In addition, the embodiment provides an illumination module that can adjust the amount of light emitted upward and the amount of light emitted downward.

In addition, it provides an illumination module that can control the light path therein.

The lighting module according to the embodiment, the first and second light source for emitting light; First and second cases disposed to correspond to each other and accommodating the first and second light sources, respectively; First and second optical plates disposed between the first case and the second case and disposed to correspond to each other; And a reflector disposed between the first case and the second case, wherein the first case has a reflecting surface that reflects light incident from the first light source to the reflector, and the reflector has the first reflector. The light reflected from the reflective surface of the case is reflected to the first and second optical plates.

An illumination module according to an embodiment includes a light source unit having a substrate and a light emitting element disposed on the substrate; A case having an arrangement surface on which the substrate is disposed and a reflection surface reflecting light from the light emitting element in a first direction; A reflector having a reflecting surface that reflects light from the reflecting surface of the case in a second direction; And first and second optical plates disposed between the reflectors and connected to the case.

Illumination module according to the embodiment, the light source having a light emitting element; A case having an accommodating portion accommodating the light source portion and a reflective surface for converting light from the light emitting element into parallel light; And a reflector disposed spaced apart from the case by a predetermined distance and having a plurality of reflecting surfaces reflecting the parallel light in at least two directions.

Using the lighting module according to the embodiment, it is possible to emit light up and down at the same time.

In addition, there is an advantage that can adjust the amount of light emitted up and the amount of light emitted down.

In addition, there is an advantage that can control the internal light path.

1 is a perspective view from above of a lighting module according to an embodiment;
FIG. 2 is a perspective view from below of the lighting module shown in FIG. 1; FIG.
3 is a cross-sectional view taken along line AA ′ of FIG. 1.
4 is an enlarged view of the first case illustrated in FIG. 3.
5 is a perspective view of the reflector shown in FIG.
6 to 7 are graphs showing optical characteristics of the lighting module shown in FIG. 3.

The thickness and size of each layer in the drawings are exaggerated, omitted, or schematically shown for convenience and clarity of explanation. In addition, the size of each component does not necessarily reflect the actual size.

In the description of embodiments according to the present invention, it is to be understood that where an element is described as being formed "on or under" another element, On or under includes both the two elements being directly in direct contact with each other or one or more other elements being indirectly formed between the two elements. Also, when expressed as "on or under", it may include not only an upward direction but also a downward direction with respect to one element.

Hereinafter, a lighting module according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view from above of a lighting module according to an embodiment, FIG. 2 is a perspective view from below of a lighting module shown in FIG. 1, and FIG. 3 is a cross-sectional view taken along line AA ′ of FIG. 1.

1 to 3, the lighting module according to the embodiment includes a first optical plate 110a, a second optical plate 110b, first and second light source units 130a and 130b, and first and second cases. 150a, 150b, reflector 160, and first and second end caps 170a, 170b.

For convenience of description, the first and second cases 150a and 150b will be described first.

1 to 3, the first case 150a houses the first light source unit 130a, and the second case 150b houses the second light source unit 130b. In addition, the first case 150a accommodates one side of the first optical plate 110a and the second optical plate 110b, and the second case 150b includes the first optical plate 110a and the second optical plate. It accommodates the other side of 110b. In addition, a reflector 160 is disposed between the first case 150a and the second case 150b. Therefore, between the first case 150a and the second case 150b, the first and second light source units 130a and 130b, the first optical plate 110a, the second optical plate 110b, and the reflector 160 are disposed. Is placed.

The first and second cases 150a and 150b may be made of a material capable of easily dissipating heat from the first and second light sources 130a and 130b. For example, it may be aluminum, an aluminum alloy, or the like.

Hereinafter, the first case 150a will be described in detail with reference to FIG. 4. Here, since the first case 150a and the second case 150b are the same, the description of the second case 150b is replaced with the description of the first case 150a described later.

4 is an enlarged view of the first case 150a shown in FIG. 3.

1 to 4, the first case 150a has an accommodating portion 151a. The storage unit 151a may be defined by the reflective surface 153a and the placement surface 155a. The first light source 130a is accommodated in the accommodating part 151a.

The reflecting surface 153a reflects the light from the light emitting element 133a of the first light source 130a in the direction of the second case 150b or in the direction of the reflector 160.

The light reflected from the reflecting surface 153a may be parallel light. Here, the parallel light refers to light that travels from the first case 150a to the second case 150b or in parallel with the inner surfaces of the first and second optical plates 110a and 110b.

The reflective surface 153a may be a parabolic surface. When the light emitting element 133a is positioned at the focal point of the parabolic surface 153a, the light from the light emitting element 133a is reflected on the parabolic surface 153a and becomes parallel light.

The first light source 130a is disposed on the placement surface 155a. The placement surface 155a may be a flat surface. The placement surface 155a may be a surface parallel to the inner surfaces of the first and second optical plates 110a and 110b. At least a part of the light reflected from the placement surface 155a and the reflective surface 153a is parallel.

The placement surface 155a may contact the bottom surface of the substrate 131a of the first light source 130a.

The first case 150a may have a first groove 157a-1 and a second groove 157a-2.

One side of the first optical plate 110a is inserted into the first groove 157a-1, and one side of the second optical plate 110b is inserted into the second groove 157a-2. The first and second optical plates 110a and 110b may be coupled to the first case 150a in a sliding manner by the first grooves 157a-1 and the second grooves 157a-2.

1 to 3, the first light source unit 130a is accommodated in or accommodated in the first case 150a. The first light source unit 130a is accommodated in the accommodation unit 151a shown in FIG. 4. In addition, the first light source 130a is disposed on the mounting surface 155a illustrated in FIG. 4 to emit light from the second optical plate 110b toward the first optical plate 110a. The second light source unit 130b is also accommodated in or accommodated in the second case 150b.

Specifically, the first light source unit 130a will be described. Here, since the second light source unit 130b is the same as the first light source unit 130a, the description of the second light source unit 130b is replaced with the description of the first light source unit 130a described later.

The first light source 130a may include a substrate 131a and a light emitting element 133a.

A plurality of light emitting elements 133a are arranged in a line on one surface of the substrate 131a. The other surface of the substrate 131a is disposed on the placement surface 155a of the first case 150a illustrated in FIG. 4. The substrate 131a may be long in one direction and may have a plate shape having a predetermined thickness.

The substrate 131a may include a printed circuit board (PCB), a metal core printed circuit board (MCPCB), a flexible printed circuit board (FPCB), or a ceramic substrate.

The light emitting element 133a may be a light emitting diode (LED).

The plurality of light emitting devices 133a may be light emitting devices emitting light having the same color, or may be light emitting devices emitting light having different colors.

The intervals between the plurality of light emitting elements 133a may be the same. In addition, the spacing between the plurality of light emitting devices 133a may be different.

The light emitting device 133a may be a blue light emitting device, or may be a white light emitting device having a high color rendering index (CRI). The white light emitting device may be a light emitting device that emits white light by molding a synthetic resin including a phosphor on the blue light emitting chip. Here, the phosphor may include at least one of garnet-based (YAG, TAG), silicate (Silicate), nitride (Nitride) and oxynitride (oxyxyride). Natural light (white light) may be realized by including only a yellow phosphor in a synthetic resin, but may further include a green phosphor or a red phosphor in order to improve color rendering index and reduce color temperature. In addition, when various kinds of phosphors are mixed in the synthetic resin, the addition ratio according to the color of the phosphor may use more green phosphors than red phosphors and more yellow phosphors than green phosphors. YAG, silicate, and oxynitride systems of the garnet system may be used as the yellow phosphor, silicate system and oxynitride system may be used as the green system phosphor, and nitrides may be used as the red system phosphor. have. In addition to mixing various kinds of phosphors in a synthetic resin, a layer having a red phosphor, a layer having a green phosphor, and a layer having a yellow phosphor may be divided separately.

The light emitting elements 133a of the first light source 130a and the light emitting elements 133b of the second light source 130b may have different color temperature values. For example, the plurality of light emitting elements 133a included in the first light source unit 130a are warm white LEDs, and the plurality of light emitting elements 133b included in the second light source unit 130b are cool. It may be a cool white LED. The warm white light emitting device and the cool white light emitting device emit white light. Since the warm white light emitting device and the cool white light emitting device may emit a correlation color temperature, respectively, to emit white light of mixed light, a color rendering index (CRI) indicating closeness to natural sunlight is increased. Therefore, the color of the real object can be prevented from being distorted, and the eye fatigue of the user is reduced.

The first light source unit 130a may further include a heat dissipation sheet (not shown). The heat dissipation sheet (not shown) is disposed between the substrate 131a and the first case 150a.

1 to 3, the first optical plate 110a and the second optical plate 110b are disposed between the first case 150a and the second case 150b.

The reflector 160 may be disposed between the first optical plate 110a and the second optical plate 110b.

The first optical plate 110a and the second optical plate 110b may be long plates in one direction and have a predetermined thickness.

One side of the first optical plate 110a is connected to the first case 150a and the other side is connected to the second case 150b. One side of the second optical plate 110b is connected to the first case 150a and the other side is connected to the second case 150b. Therefore, the first optical plate 110a and the second optical plate 110b may be disposed to correspond to each other or to face each other, and both may be disposed substantially parallel to each other.

The first optical plate 110a and the second optical plate 110b are emitted from the first and second light source units 130a and 130b to transmit the light reflected by the reflector 160. The first and second optical plates 110a and 110b may be general transparent glass, plastic, or polycarbonate (PC) plates.

The first and second optical plates 110a and 110b may diffuse and pass the light incident on the inner surface. In addition, the first and second optical plates 110a and 110b may be translucent or opaque materials to protect the eyes of the user.

The first and second optical plates 110a and 110b may excite light from the light emitting diodes when the light emitting elements of the first and second light source units 130a and 130a are light emitting diodes. To this end, the first and second optical plates 110a and 110b may have the fluorescent material described above.

The first and second optical plates 110a and 110b may further include additives. The additive evenly distributes the fluorescent material within the first and second optical plates 110a and 110b. In addition, the first and second optical plates 110a and 110b may further include a diffusing agent. The diffusing agent can increase the excitation rate of the fluorescent material.

1 to 3, the reflector 160 emits reflected light emitted from the first light source unit 130a and the second light source unit 130b and reflected from the first and second cases 150a and 150b to the first optical plate. Reflected back to 110a and the second optical plate 110b.

The reflector 160 is disposed between the first case 150a and the second case 150b. In detail, the reflector 160 may be disposed at an intermediate point between the first case 150a and the second case 150b. In addition, the reflector 160 is disposed between the first optical plate 110a and the second optical plate 110b. In detail, the reflector 160 may be disposed at an intermediate point between the first optical plate 110a and the second optical plate 110b. In addition, the reflector 160 may be disposed between the first light source unit 130a and the second light source unit 130b. In detail, the reflector 160 may be disposed at an intermediate point between the first light source 130a and the second light source 130b. The structure of the reflector 160 will be described in detail with reference to FIG. 5.

FIG. 5 is a perspective view of the reflector 160 shown in FIG. 3.

3 and 5, the reflector 160 may have a polygonal shape that is long in one direction. Here, the cross section of the reflector 160 may have a rhombus shape. In the present specification, the term “diamond shape” includes not only geometrically perfect rhombus but also four sides constituting the rhombus curved to the outside or the inside of the reflector 160 ′.

The reflector 160 may have at least four reflective surfaces 160-1, 160-2, 160-3, and 160-4. The first to fourth reflective surfaces 160-1, 160-2, 160-3, and 160-4 may be curved to the inside of the reflector 160. Although not shown in the drawings, the first to fourth reflective surfaces 160-1, 160-2, 160-3, and 160-4 may be curved to the outside of the reflector 160.

The first to fourth reflective surfaces 160-1, 160-2, 160-3, and 160-4 may have different curvatures. For example, the first and second reflective surfaces 160-1, which are adjacent to the first optical plate 110a, of the first to fourth reflective surfaces 160-1, 160-2, 160-3, and 160-4. The curvatures of the third and fourth reflective surfaces 160-3 and 160-4 adjacent to the second optical plate 110b and 160-2 may be different from each other.

More specifically, the curvatures of the first reflecting surface 160-1 and the second reflecting surface 160-2 are the same, and the curvatures of the third reflecting surface 160-3 and the fourth reflecting surface 160-4 are the same. The curvature is the same.

However, the curvatures of the first and second reflective surfaces 160-1 and 160-2 are smaller than the curvatures of the third and fourth reflective surfaces 160-3 and 160-4. Therefore, the longest distance from the first and second reflective surfaces 160-1 and 160-2 to the inner surface of the first optical plate 110a is determined by the third and fourth reflective surfaces 160-3 and 160-4. 2 is smaller than the longest distance to the inner surface of the optical plate 110b.

The reflector 160 shown in FIGS. 3 and 5 is connected to the first and second end caps 170a, 170b shown in FIG. 2 or between the first optical plate 110a and the second optical plate 110b. The light source may be disposed between the first light source unit 130a and the second light source unit 130b or between the first case 150a and the second case 150b.

Referring to FIG. 2, the first and second end caps 170a and 170b are formed on the first and second cases 150a and 150b and the first optical plate 110a and the second optical plate 110b. Each of the two openings.

The first and second end caps 170a and 170b prevent light from escaping from the two openings, and stably fix the lighting module according to the embodiment.

The first and second end caps 170a and 170b may be coupled to the first and second cases 150a and 150b through fastening means such as screws. In addition, for more stable fixing, the first and second plates 110a and 110b may be coupled together through the fastening means.

The first and second end caps 170a and 170b are connected to the reflector 160. Specifically, the first end cap 170a is connected to one side of the reflector 160, and the second end cap 170b is connected to the other side of the reflector 160. By the first and second end caps 170a and 170b, the reflector 160 is disposed between the first optical plate 110a and the second optical plate 110b or between the first light source unit 130a and the second light source unit 130b. Or between the first case 150a and the second case 150b. Here, the connection of the first and second end caps 170a and 170b and the reflector 160 may be coupled through a fastening means such as a screw.

Table 1 below is a specification of the lighting module according to the above-described embodiment.

Product Item Value Strip Spce.
(13S * 5P)

Voltage (V) 39
Current (mA) 350
Power (W) 13.65
Module Spec.




Total Lumen output (lm) Up Lumen Output 2,500
500 Down Lumen Output 2,000 Module Power (W)
27.3
Efficacy (lm / W)
90
CCT (K)
4,000
CRI
80
Fixture Spec.
Lumen Output (lm)
10,000 (Up: 2,000, Down: 8,000)
DC Power Consumption (W)
110

Referring to Table 1, in the lighting module according to the embodiment, the lumen value emitted upward is smaller than the lumen value emitted downward. Conversely, however, the lumens emitted upwards may be greater than the lumens emitted downwards.

In the lighting module according to the embodiment, the lumen value emitted downward may be more than 1 times and 9 times less than the lumen value emitted upward.

Width (W (mm)) * height (H (mm)) * length (L (mm)) of the lighting module according to the embodiment may be any one of 80 * 12 * 560 or 45 * 12 * 560.

6 to 7 are graphs showing optical characteristics of the lighting module shown in FIG. 3.

In the graph shown in FIG. 6, the horizontal axis represents position, and the vertical axis represents brightness. Here, '0' on the horizontal axis means an intermediate point between the first light source unit 130a and the second light source unit 130b shown in FIG. 3.

6 and 7, the lighting module shown in FIG. 3 simultaneously emits light up and down, and the amount of light emitted downward is emitted up. It can be seen that more than the amount of light.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

110a: first optical plate
110b: second optical plate
130a: first light source unit
130b: second light source unit
150a: first case
150b: second case
160: reflector
170a: first end cap
170b: second end cap

Claims (15)

First and second light source units emitting light;
First and second cases disposed to correspond to each other and accommodating the first and second light sources, respectively;
First and second optical plates disposed between the first case and the second case and disposed to correspond to each other; And
And a reflector disposed between the first case and the second case.
The first case has a reflecting surface that reflects light incident from the first light source unit to the reflector,
The reflector is an illumination module reflecting light reflected from the reflecting surface of the first case to the first and second optical plate. The method of claim 1,
The reflective module of the first case is a parabolic surface. The method of claim 1,
The first case has a lighting module having an arrangement surface on which the first light source unit is disposed. The method of claim 1,
And first and second end caps connected to the first and second plates and the first and second cases to fix the reflector. A light source unit having a substrate and a light emitting element disposed on the substrate;
A case having an arrangement surface on which the substrate is disposed and a reflection surface reflecting light from the light emitting element in a first direction;
A reflector having a reflecting surface that reflects light from the reflecting surface of the case in a second direction; And
First and second optical plates disposed between the reflectors and connected to the case;
Lighting module comprising a. The method of claim 5, wherein
And an end cap coupled to the case and for securing the reflector between the first optical plate and the second optical plate. The method of claim 5, wherein
The case has a lighting module having a groove for receiving each side of the first optical plate and the second optical plate. 6. The method according to claim 1 or 5,
The reflecting surface of the reflector includes a first reflecting surface and a second reflecting surface,
And the first reflecting surface reflects incident light to the first optical plate, and the second reflecting surface reflects incident light to the second optical plate. The method of claim 8,
The curvature of the first reflective surface and the curvature of the second reflective surface are different from each other. The method of claim 8,
The longest distance from the first plate to the first reflective surface is different from the longest distance from the second plate to the second plate. 6. The method according to claim 1 or 5,
And the first and second optical plates diffuse or excite incident light. A light source unit having a light emitting element;
A case having an accommodating portion accommodating the light source portion and a reflective surface for converting light from the light emitting element into parallel light; And
A reflector disposed spaced apart from the case by a predetermined distance and having a plurality of reflecting surfaces reflecting the parallel light in at least two directions;
Lighting module comprising a. 13. The method of claim 12,
And an end cap coupled to the case and for holding the reflector. The method of claim 5 or 12,
The reflecting surface of the case is a parabolic lighting module. The method according to any one of claims 1, 5 and 12,
The reflector is a lighting module having a polygonal cross section having a rhombus shape.

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