KR101987627B1 - Light emitting package - Google Patents

Abstract

A light emitting package is disclosed. The light emitting package of the present invention is characterized in that a communication hole is formed in communication with the outside and the inner space where the light emitting unit is located.
The light emitting package of the present invention includes a base substrate, a light emitting portion coupled to the base substrate, a lower surface of the body portion including an opening in which the bottom surface is in contact with the base substrate, a recess is formed in the upper surface, and the light emitting portion is located therein, A reflection plate including a reflection surface positioned inside the opening and surrounding the light emitting portion and a mounting piece extending from an upper end of the reflection surface and seated in the seating groove, and covering the seating groove at an upper portion of the body part; And a lens unit for refracting light generated by the light emitting unit, and the communication hole formed by covering the seating groove communicates the inside and the outside of the opening of the body part.

Description

Light emitting package {LIGHT EMITTING PACKAGE}

The present invention relates to a light emitting package, and more particularly, to a light emitting package in which light generated by the light emitting unit is reflected, refracted and irradiated to the outside, including a light emitting unit, a reflecting plate, and a lens unit.

Recently, electronic devices such as smart phones, tablet computers, and laptop computers are being developed to perform more complex functions. For example, in addition to the conventional call, message transmission and Internet browsing functions, the smartphone is equipped with a function of capturing high quality images and images, an iris recognition function, and a heart rate measurement function. In order to implement these additional functions, recent electronic devices include various types of light emitting packages.

For example, recent smart phones may include a flash emitter for capturing clear images and images even in a dark environment, and may include an infrared emitter used for iris recognition.

The light emitting package of the type used for this purpose is disclosed in Republic of Korea Patent No. 10-1653926 (registered on August 29, 2016) and Republic of Korea Patent Publication No. 10-2016-0077840 (published on July 4, 2016) It is.

As such, the recent electronic devices are equipped with additional components, but the overall trend is to become lighter and thinner. To this end, various components mounted therein are required to be miniaturized. This is no exception to the above-mentioned light emitting package. However, miniaturization of the light emitting package can lead to a complicated structure, leading to an increase in production cost and a decrease in durability.

Republic of Korea Patent No. 10-1653926 (August 29, 2016 registration) Republic of Korea Patent Publication No. 10-2016-0077840 (published 4 July 2016)

The problem to be solved by the present invention is to provide a light emitting package that is compact and simple in structure and low in production cost and excellent in durability.

Another object of the present invention is to provide a light emitting package in which a communication hole is formed which communicates an interior space and an exterior of a light emitting unit.

In the light emitting package of the present invention for solving the above problems, a base substrate, a light emitting portion coupled to the base substrate, a lower surface is in contact with the base substrate, a recess is formed in the upper surface, the opening portion in which the light emitting portion is located Located on top of the body portion and the reflector including a body portion, including a reflecting surface surrounding the light emitting portion positioned inside the opening and a mounting piece extending from an upper end of the reflecting surface and seated in the seating groove A communication hole covering the seating groove and refracting light generated by the light emitting part, wherein the communication hole formed by the lens part covering the seating groove communicates inside and outside of the opening of the body part.

In one embodiment of the present invention, the seating piece may be seated while covering a portion of the lower surface of the seating groove.

In one embodiment of the present invention, the thickness of the seating piece may be smaller than the depth of the seating groove.

In one embodiment of the present invention, the seating piece is located inside the communication hole, the communication hole may be closed by the seating piece.

In one embodiment of the present invention, the seating groove and the seating piece may be formed a plurality of spaced apart from each other.

In one embodiment of the present invention, the opening may have a wide upper portion, the lower portion may be formed narrow.

In one embodiment of the present invention, the reflective surface may be coupled in close contact with the inner surface of the opening.

In one embodiment of the present invention, the lens unit may be formed of a single lens, and may include a Fresnel lens unit and a convex lens unit.

In one embodiment of the present invention, the Fresnel lens unit may have a form surrounding the convex lens unit.

In one embodiment of the present invention, the convex lens portion may be located eccentrically in one direction from the center of the lens portion.

In one embodiment of the present invention, an intermediate region may be formed between the Fresnel lens unit and the block lens unit.

The light emitting package according to an embodiment of the present invention has the advantage of being compact and simple in structure, low in production cost and excellent in durability.

In addition, the light emitting package according to an embodiment of the present invention has an advantage in that the communication hole is formed to communicate with the inner space and the outside of the light emitting unit is easy to discharge the gas or moisture management.

1 is a perspective view of a light emitting package according to an embodiment of the present invention.
2 is an exploded perspective view of a light emitting package according to an embodiment of the present invention.
3 is a cross-sectional view of a light emitting package according to an embodiment of the present invention.
4 is an enlarged view of a mounting groove, a seating piece, and a communication hole in FIG. 3.
5 is a perspective view of a lens unit of a light emitting package according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described embodiments of the present invention; In describing the present invention, if it is determined that adding specific descriptions of techniques or configurations already known in the art may make the gist of the present invention unclear, some of them will be omitted from the detailed description. In addition, terms used in the present specification are terms used to properly express the embodiments of the present invention, which may vary according to related persons or customs in the art. Therefore, the definitions of the terms should be made based on the contents throughout the specification.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a,” “an,” and “the” include plural forms as well, unless the phrases clearly indicate the opposite. As used herein, the meaning of “comprising” specifies a particular characteristic, region, integer, step, operation, element, and / or component, and other specific characteristics, region, integer, step, operation, element, component, and / or group. It does not exclude the presence or addition of.

Hereinafter, a light emitting package according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4.

1 is a perspective view of a light emitting package according to an embodiment of the present invention. 2 is an exploded perspective view of a light emitting package according to an embodiment of the present invention. 3 is a cross-sectional view of a light emitting package according to an embodiment of the present invention.

1 to 3, the light emitting package includes a base substrate 100, a light emitting unit 200, a body unit 300, a reflector plate 400, and a lens unit 500.

The base substrate 100 is formed in a flat plate shape to form a lower portion of the light emitting package. The base substrate 100 may be disposed parallel to the xy plane in the three-axis coordinate system shown in the accompanying drawings. The base substrate 100 may be formed of a printed circuit board (PCB). A connection terminal electrically connected to the light emitting unit 200 may be formed on the upper surface of the base substrate 100. A power terminal (not shown) or a signal input terminal (not shown) may be formed on the bottom surface of the base substrate 100 to receive electric power applied to the light emitting unit 200.

The light emitting unit 200 is positioned on the top surface of the base substrate 100. The light emitter 200 may be positioned at a central portion of the upper surface of the base substrate 100. In addition, the body 300 may be positioned on the top surface of the base substrate 100. The body part 300 may be supported by being coupled to a lower surface of the upper edge of the base substrate 100.

The light emitting unit 200 is an electric device that emits light when power is applied. The light emitting unit 200 may be, for example, a light emitting diode (LED). The light emitting unit 200 is applied from the outside, and operates by receiving power transmitted through the base substrate 100. The light emitter 200 emits light of a predetermined wavelength band. For example, the light emitting unit 200 may emit light in the visible light band or may emit light in the infrared band.

The light emitter 200 emits light in a direction approximately orthogonal to the base substrate 100. That is, the light emitter 200 emits light around the z-axis in the three-axis coordinate system shown in the accompanying drawings.

The body part 300 is positioned above the base substrate 100 and is formed in a shape surrounding the light emitting part 200. In detail, the lower surface of the body 300 is in contact with the base substrate 100.

The body part 300 includes an opening 310 penetrating in an up and down direction (z-axis direction), and is coupled to an upper surface of the base substrate 100 so that the light emitting part 200 is positioned inside the opening 310. The opening 310 may have a narrow lower opening surface and a wider upper opening surface. The body part 300 is formed with a light shielding property, and the bottom surface of the body part 300 and the top surface of the base substrate 100 are tightly coupled to each other so that the light of the light emitting part 200 is exposed to the base substrate 100 and the body part 300. ) Is formed so as not to flow through the part.

The mounting groove 320 is formed on the upper surface of the body 300. The mounting groove 320 is a groove-type structure in which the mounting piece 420 of the reflecting plate 400 to be described later is mounted. In addition, the mounting groove 320 is covered with the lens unit 500 to form a communication hole 350 to be described later. The seating groove 320 may be formed in plural on the upper surface of the body part 300. For example, four may be formed as shown in the accompanying drawings. The mounting groove 320 and the communication hole 350 will be described in more detail below.

The reflecting plate 400 includes a reflecting surface 410 and a mounting piece 420. The reflective surface 410 is formed to surround the light emitting unit 200. The reflective surface 410 is tightly coupled to the inner surface of the opening of the body 300. The reflective surface 410 is formed as a surface having a high reflectance with respect to the light emitted from the light emitter 200, so that the light emitted from the light emitter 200 is reflected and irradiated upwardly (+ z-axis direction).

The mounting piece 420 extends from the top of the reflective surface 410. The mounting piece 420 may be bent and extended at the upper end of the reflective surface 410. Specifically, the mounting piece 420 may be formed in a form orthogonal to the z-axis. The mounting piece 420 is seated in the seating recess 320 of the body 300 described above, so that the entire reflector plate 400 is seated in the body 300. The seating piece 420 may be formed at a position corresponding to the seating groove 320, and a plurality of seating pieces 420 may be formed to correspond to the number of the seating recesses 320. The form in which the seating piece 420 is seated in the seating groove 320 will be described in more detail below.

In the reflective plate 400, the reflective surface 410 and the mounting piece 420 may be integrally formed of the same material. In detail, the reflective plate 400 may be formed of a plastic resin having a high reflection coating treatment or a metal having a high reflection surface treatment.

The lens unit 500 is positioned above the light emitting unit 200. The lens unit 500 is coupled to cover the opening 310 of the body 300 from above. Therefore, the light emitted from the light emitting unit 200 passes through the lens unit 500 to be irradiated to the outside of the lens package. The lens unit 500 is formed to have a refractive power, such that the light of the light emitting unit 200 is refracted. The lens unit 500 will be described in more detail below.

The lens unit 500 is coupled to cover the seating groove 320 of the body 300. In detail, the lens unit 500 is coupled to cover at least a portion of the mounting groove 320. The lens unit 500 covers the seating groove 320 to form a communication hole 350 for communicating the inside and the outside of the opening 310 of the body 300. The communication hole 350 will be described in more detail below.

4 is an enlarged view of a mounting groove, a seating piece, and a communication hole in FIG. 3. FIG. 4 is an enlarged view of region A in FIG. 3.

3 and 4, the mounting groove 320, the seating piece 420 and the communication hole 350 will be described in more detail.

As described above, the seating groove 320 is formed on the upper surface of the body portion 300. The seating groove 320 is formed to be recessed downward (-z-axis direction) than the upper surface of the peripheral body portion 300. Specifically, the seating groove 320 may include a side surface extending in a vertical direction (-z-axis direction) and a bottom surface extending in a horizontal direction (direction perpendicular to the z-axis) from an upper surface of the surrounding body part 300. Include. Here, the lower surface of the mounting groove 320 may be referred to as a mounting surface 321.

The seating piece 420 is seated on the seating surface 321 of the seating groove 320. Specifically, the mounting piece 420 covers a part of the mounting surface 321. The seating piece 420 is formed to have a smaller width than the seating surface 321 to cover only a part of the seating surface 321 and to expose the rest of the seating surface 321 without being covered. In addition, the mounting piece 420 is formed with a thickness h2 smaller than the depth h1 of the mounting groove 320. Therefore, the seating groove 320 is formed empty space even if the seating piece 420 is seated.

The seating groove 320 is formed to have an open top, and the top of the seating groove 320 is covered by the lens unit 500. When the mounting groove 320 is covered by the lens unit 500, a communication hole 350 is formed. The communication hole 350 is an opening surrounded by a side surface and a bottom surface of the mounting groove 320 and a bottom surface of the lens unit 500. The communication hole 350 communicates the inside and the outside of the opening 310 of the body 300.

The mounting piece 420 is positioned inside the communication hole 350. However, the seating piece 420 does not completely seal the inside of the communication hole 350, and an empty space is formed. The inside and the outside of the opening 310 of the body 300 are communicated through the empty space.

The communication hole 350 may be used for discharging the gas (gas generated during the curing process such as an epoxy or the like) remaining in the opening 310 of the body part 300 to the outside. In addition, the communication hole 350 may be used for discharging moisture inside the opening 310 of the body part 300 to the outside, thereby preventing the inner surface of the lens part 500 from being opaque due to moisture.

5 is a perspective view of a lens unit of a light emitting package according to an embodiment of the present invention. The lens unit 500 of the light emitting package of the present invention will be described in detail with reference to FIGS. 3 and 5.

The lens unit 500 is formed of one lens. One lens is formed to cover the opening of the body portion 300 from the top. The lens unit 500 corresponds to an edge portion, substantially corresponds to a peripheral portion and a center portion having no refractive power, and is divided into a portion center portion having generally refractive power. A lower surface of the peripheral portion of the lens unit 500 may be combined with an upper surface of the body 300 and / or the reflective plate 400 to seal the opening of the body 300.

The refractive power central portion of the lens unit 500 includes a Fresnel lens unit 510 and a convex lens unit 550. When viewed as a whole, the Fresnel lens unit 510 is formed to surround the convex lens unit 550. Specifically, the convex lens part 550 is eccentrically positioned in one direction from the center of the center Fresnel lens part 510.

The Fresnel lens unit 510 is a lens formed by dividing a spherical or aspherical lens into a plurality of divided lens units in order to reduce the thickness of the lens. The advantage of using Fresnel lenses is that the lens can be made larger without increasing the thickness of the lens.

The Fresnel lens unit 510 includes a plurality of division lens units separated by division lines 521 to 525. In the three-axis coordinate system shown in the accompanying drawings, the Fresnel lens unit 510 is divided into a plurality of divided lens units by dividing lines 521 to 525 parallel to the y-axis. The division lens unit is formed in a form arranged along the x-axis in the three-axis coordinate system shown in the accompanying drawings. Referring to the accompanying drawings, the Fresnel lens unit 510 includes six division lens units divided into five division lines 521 to 525.

The plurality of divided lens portions are formed so that all or most of them face the same direction. Specifically, 70% or more of the plurality of divided lens parts may be formed to face the same direction. It may be formed to face the same direction. Referring to the accompanying drawings, all six division lens portions of the Fresnel lens portion 510 are formed to face the same direction.

All or most of the division lens units may be formed such that the emission surfaces 511 to 516 face the same direction. In detail, the emission surfaces 511 to 516 of the plurality of divided lens parts may be inclined in one direction of the x-axis in the 3-axis coordinate system shown in the accompanying drawings. Referring to the accompanying drawings, in the Fresnel lens unit 510, the exit surfaces 511 to 516 of the six division lens units are all inclined in the positive direction of the x-axis.

The emission surfaces 511 to 516 of the Fresnel lens unit 510 are inclined in one direction as described above, but the incident surface of the Fresnel lens unit 510 may be formed in a substantially planar shape. As shown in FIG. 4, the incident surface of the lower surface corresponding to the exit surfaces 511 to 516 of the Fresnel lens unit 510 is not the incident surface of the Fresnel lens unit 510, but the convex lens unit 550. The incident surface 552 may be formed. Accordingly, the convex lens part 550 may have a smaller area than the exit surface 551 of the upper surface than the incident surface 552 of the lower surface.

The convex lens unit 550 includes an emission surface 551 on the upper surface and an incident surface 552 on the lower surface. The exit surface 551 and the incident surface 552 of the convex lens unit 550 may be formed in a convex shape. The convex lens portion 550 has a positive refractive power.

The convex lens portion 550 is positioned to be surrounded by the Fresnel lens portion 510. When the position corresponding to the positive direction of the z-axis of the light emitting unit 200 is the center of the lens unit 500, the convex lens unit 550 is eccentrically formed in one direction from the center of the lens unit 500. Specifically, the convex lens unit 550 may be eccentrically positioned in the negative direction of the x-axis in the three-axis coordinate system shown in the accompanying drawings.

In the convex lens unit 550, the emission surface 551 and the incident surface 552 may be formed in different shapes. As described above, the exit surface 551 of the convex lens unit 550 may be formed with a smaller area than the entrance surface 552. In addition, the emission surface 551 of the convex lens unit 550 may be eccentrically positioned in one direction than the incident surface 552. In detail, the emission surface 551 of the convex lens unit 550 may be eccentrically positioned in the negative direction of the x-axis in the three-axis coordinate system shown in the accompanying drawings rather than the incident surface 552.

An intermediate region 530 is formed between the Fresnel lens unit 510 and the convex lens unit 550. The intermediate region 530 is formed substantially planar, with little or no refractive power. At least the intermediate region 530 has a refractive power smaller than the absolute value of the refractive power of the convex lens portion 550. In the exit surface of the lens unit 500, an intermediate region 530 is formed in a substantially planar manner between the exit surfaces 511 to 516 of the Fresnel lens unit 510 and the exit surface 551 of the convex lens unit 550. The exit surface 531 is relatively clearly distinguished. On the other hand, in the incident surface of the lens unit 500, the incidence surface portion of the Fresnel lens unit 510 may be substantially planar, so that the incidence surface of the intermediate region 530 may be absent or not clearly distinguished.

The lens unit 500 refracts the light generated by the light emitting unit 200 to be biased in one direction based on the optical axis. In detail, the beam of light generated by the light emitter 200 has a central axis parallel to the z axis before being incident on the lens unit 500. After the beam of light generated by the light emitter 200 exits through the lens unit 500, the light emitter 200 has a central axis in a direction inclined from the z-axis. Specifically, when passing through the lens unit 500 shown in the accompanying drawings, the beam of light generated by the light emitting unit 200 passes through the lens unit 500 and is emitted in a direction inclined in the positive direction of the x-axis. It has a central axis of.

By the shape of the lens unit 500 described above, the central axis of the beam can be inclined at an appropriate angle while maintaining the light generated by the light emitting unit 200 to be collected at a considerable level. In addition, the thickness can be kept relatively thin when compared to other optically shaped lenses that achieve the same tilt. Keeping the thickness of the lens unit 500 thin means that the overall height of the light emitting package can be reduced, which can contribute to miniaturization and thinning of an electronic device on which the light emitting package is mounted.

The present invention is not limited by the specific shape of the lens unit 500 shown in the accompanying drawings. Those skilled in the art to which the present invention pertains include the positional relationship between the Fresnel lens unit 510 and the convex lens unit 550, the angles of the exit surfaces 511 to 516 and the incident surface of the Fresnel lens unit 510, and By adjusting the refractive power of the convex lens unit 550, the degree of refraction of the light of the light emitting unit 200 may be easily adjusted.

In the above, embodiments of the light emitting package of the present invention have been described. The present invention is not limited to the above-described embodiment and the accompanying drawings, and various modifications and variations will be possible in view of those skilled in the art to which the present invention pertains. Therefore, the scope of the present invention should be defined not only by the claims of the present specification but also by the equivalents of the claims.

100: base substrate 200: light emitting portion
300: body portion 310: opening portion
320: seating groove 321: seating surface
350: communication hole
400: reflector 410: reflecting surface
420: seating
500: lens unit 510: Fresnel lens unit
530: intermediate region 550: convex lens portion

Claims (11)

A base substrate;
A light emitting unit coupled to the base substrate;
A body part having a lower surface in contact with the base substrate, a mounting groove formed at an upper surface thereof, and an opening having an interior of the light emitting part;
A reflection surface positioned inside the opening while surrounding the light emitting part;
A reflecting plate bent at an upper end of the reflecting surface and including a seating piece extending radially from the center of the reflecting surface and seated in the seating groove; And
Located at the top of the body portion to cover the seating groove, and includes a lens unit for refracting the light generated by the light emitting unit,
The communication hole formed by the lens portion covering the seating groove communicates the inside and the outside of the opening of the body portion,
The seating piece is seated while covering a part of the lower surface of the seating groove,
The thickness of the seating piece is smaller than the depth of the seating groove,
The seating piece is located inside the communication hole,
The communication hole is not closed by the seating piece,
The seating groove and the seating piece is a light emitting package formed with a plurality of spaced apart from each other.
delete delete delete delete According to claim 1,
The opening is wider, the lower portion of the light emitting package is formed narrow.
According to claim 1,
The reflective surface is in close contact with the inner surface of the opening coupled to the light emitting package.
According to claim 1,
The lens unit is formed of a single lens, and comprises a Fresnel lens (Fresnel lens) and a convex lens unit.
The method of claim 8,
The fresnel lens unit surrounds the convex lens unit.
The method of claim 8,
The convex lens portion is a light emitting package eccentrically positioned in one direction from the center of the lens portion.
The method of claim 8,
The intermediate package is formed between the Fresnel lens portion and the convex lens portion.

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