TWM514008U - Light emitting device - Google Patents

Abstract

A light emitting device includes a base plate, a light emitting module and a lens structure. A recessed structure is formed on the base plate. The recessed structure has a bottom platform and an arc-shaped lateral wall surrounding on the bottom platform. The light emitting module is disposed on the bottom platform. Part of light emitted from the light emitting module is reflected into the lens structure by the arc-shaped lateral wall, and the lens structure is for guiding the light reflected therein to project out of the lens structure.

Description

Illuminating device

The present invention relates to a lens structure, and more particularly to a lens structure suitable for a Light Emitting Diode (LED).

Recently, light-emitting diodes have been widely used in people's daily lighting systems, such as home lighting, street lighting, or traffic sign lighting. A conventional LED module includes a light emitting diode chip and a lens. The light emitting diode chip emits light, and the lens converges light emitted by the LED chip. However, in order to converge the light emitted by the LED chip to a certain angle, a lens having a long and high-profile structure is required, thereby limiting the height of the LED module, and the LED module is thin. The direction of development.

Therefore, the present invention provides a lens structure having high condensing property and thinning to solve the above problems.

In order to achieve the above object, the present invention discloses a light-emitting device including a substrate, a light-emitting module, and a lens structure. The substrate is formed with a concave cup structure having a base platform and one of the base platforms surrounding the substrate. The curved sidewall is disposed on the base platform. The lens structure includes a bonding portion and a light guiding portion. The bonding portion is coupled to the substrate and covers the concave cup structure. The light guiding portion is disposed on the bonding portion. The light guiding portion includes a first truncated conical light guiding structure and a second truncated conical light guiding structure, the first truncated conical light guiding structure has a a first bottom surface and a first top surface, the first bottom surface is coupled to the joint portion, and the second truncated cone light guiding structure is disposed coaxially with the first truncated cone light guiding structure, the second truncated cone guiding light The structure has a second bottom surface that is coupled to the first top surface. A portion of the light emitted by the light emitting module is reflected into the lens structure via the curved sidewall, and the light guiding portion is configured to guide light incident into the lens structure out of the lens structure.

According to one embodiment of the present invention, the second truncated conical light guiding structure further has a second top surface, the first top surface has an area smaller than an area of the first bottom surface, and the second bottom surface The area is smaller than the area of the first top surface, and the area of the second top surface is smaller than the area of the second bottom surface.

According to one embodiment of the present invention, the present disclosure further discloses that the edge of the first bottom surface extends from the edge of the second bottom surface along a radial direction of the second bottom surface by a first bottom surface radial distance, the first top surface The edge of the second bottom surface extends a radial distance of the first top surface along a radial direction of the second bottom surface, and the first bottom surface has a radial distance greater than the first top surface radial distance.

According to one embodiment of the present invention, the present disclosure further discloses that the first bottom surface radial distance is substantially equal to 0.2 mm, and the first top surface radial distance is substantially equal to 0.11 mm.

According to one embodiment of the present invention, the second truncated conical light guiding structure further has a second top surface, the first top surface has an area smaller than an area of the first bottom surface, and the second bottom surface The area of the second top surface is smaller than the area of the second top surface, and the light guiding portion further includes a third truncated conical light guiding structure, and the second truncated cone The light guiding structure is disposed coaxially. The third truncated cone light guiding structure has a third bottom surface and a third top surface. The third bottom surface is coupled to the second top surface. The third bottom surface has an area smaller than the second top surface. The area of the surface, and the area of the third top surface is smaller than the area of the third bottom surface.

According to one embodiment of the present invention, the present invention further discloses that the edge of the second bottom surface extends from the edge of the third bottom surface along a radial direction of the third bottom surface by a second bottom surface radial distance, the second top surface The edge of the third bottom surface extends a radial distance of the second top surface along a radial direction of the third bottom surface, and the second bottom surface has a radial distance greater than the second top surface radial distance.

According to one embodiment of the present invention, the present disclosure further discloses that the second bottom surface radial distance is substantially equal to 0.2 mm, and the second top surface radial distance is substantially equal to 0.11 mm.

According to one embodiment of the present invention, the present invention further discloses that the edge of the first bottom surface, the edge of the second bottom surface, and the edge of the third bottom surface are co-located on a virtual spherical surface.

According to one embodiment of the present invention, the present invention further discloses that the radius of the virtual spherical surface is substantially equal to 1.9 mm.

According to one embodiment of the present invention, the present invention further discloses that the geometric center of the illumination module passes through the center of the virtual spherical surface.

According to one embodiment of the present invention, the present invention further discloses that the center of the virtual spherical surface is co-located at the geometric center of the curved side wall.

According to one embodiment of the present invention, the present invention further discloses that the edge of the first bottom surface, the edge of the second bottom surface, and the edge of the third bottom surface are disposed coaxially with each other.

In summary, the light guiding portion of the lens structure of the present illuminating device is composed of a plurality of truncated conical light guiding structures, and the light guiding surface of the light guiding portion of the present lens structure is the bottom surface of each truncated conical light guiding structure. The top surface and the side surface are formed. Therefore, the light-emitting surface of the light guiding portion of the lens structure of the present invention is not A smooth continuous curved surface, which can effectively reduce the overall height of the lens structure, not only facilitates the development of the lens structure toward the thinning direction, and can converge the light emitted by the light emitting module to a certain angle. In addition, the concave cup structure on the substrate of the light-emitting device can also partially reflect the light emitted by the light-emitting module into the lens structure, so that the light guiding portion of the lens structure guides the light entering the lens structure. Out of the lens structure to achieve better light output. The foregoing and other technical contents, features, and advantages of the present invention will be apparent from the following detailed description of the embodiments of the invention.

1000‧‧‧Lighting device

3000‧‧‧ lens structure

1‧‧‧Lighting module

10‧‧‧Light axis

11‧‧‧Glossy

2‧‧‧Substrate

3‧‧‧ concave cup structure

30‧‧‧Base platform

31‧‧‧ curved side walls

310‧‧‧Geometry Center

4‧‧‧Combination Department

5‧‧‧Light Guide

50‧‧‧First truncated conical light guiding structure

501‧‧‧ first bottom surface

502‧‧‧ first top surface

503‧‧‧ first side

51‧‧‧Second truncated conical light guiding structure

511‧‧‧second bottom surface

512‧‧‧second top surface

513‧‧‧ second side

52‧‧‧The third truncated conical light guiding structure

521‧‧‧ third bottom

522‧‧‧ third top surface

53‧‧‧Four truncated conical light guiding structure

54‧‧‧Fixed truncated conical light guiding structure

55‧‧‧6th truncated conical light guiding structure

56‧‧‧The seventh truncated conical light guiding structure

57‧‧‧The eighth truncated conical light guiding structure

6‧‧‧Virtual spherical surface

60‧‧‧radius

61‧‧‧ ball heart

B1, B2, B3, T1, T2‧‧

D‧‧‧Distance

X1‧‧‧ radial direction

C1‧‧‧first bottom radial distance

D1‧‧‧first top radial distance

C2‧‧‧Second bottom radial distance

D2‧‧‧Second top radial distance

L1, L2‧‧‧ rays

FIG. 1 is a schematic view showing the appearance of a light-emitting device according to an embodiment of the present invention.

Fig. 2 is a schematic exploded view of the light-emitting device of the present embodiment.

Fig. 3 is a schematic cross-sectional view showing a light-emitting device of the present embodiment.

The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only directions referring to the additional drawings. Therefore, the directional terminology used is used to illustrate that it is not intended to limit the creation. Please refer to FIG. 1 to FIG. 3 . FIG. 1 is a schematic diagram showing the appearance of a light-emitting device 1000 according to a first embodiment of the present invention. FIG. 2 is a schematic view showing the explosion of the light-emitting device 1000 according to the creative embodiment. FIG. A schematic cross-sectional view of device 1000. As shown in FIG. 1 to FIG. 3 , the light-emitting device 1000 includes a light-emitting module 1 , a substrate 2 , and a lens structure 3000 . A concave cup structure 3 is formed on the substrate 2. The concave cup structure 3 has a base platform 30 and an arc-shaped side wall 31 surrounding the base platform 30. The light-emitting module 1 is disposed in the concave cup structure 3 and is located on the base platform 30. In this embodiment, the light emitting module 1 can be a light emitting diode (LED) chip, and the substrate 2 can be a light emitting diode substrate.

Further, the lens structure 3000 includes a joint portion 4 and a light guide portion 5, and the junction The merging portion 4 is coupled to the substrate 2 and covers the opening of the concave cup structure 3 and the light-emitting module 1 so that the light-emitting module 1 is sealed in the concave cup structure 3, whereby the light L1 emitted by the light-emitting module 1 is combined The portion 4 and the light guiding portion 5 are transmitted out of the light emitting device 1000. In practice, the joint portion 4 extends a distance D along the outer edge of the opening of the concave cup structure 3 to encapsulate a cable (not shown) of the light-emitting module 1. The light guiding portion 5 is disposed on the joint portion 4. In this embodiment, the light guiding portion 5 can be integrally formed with the joint portion 4.

In addition, the light guiding portion 5 includes a first truncated conical light guiding structure 50, a second truncated conical light guiding structure 51, and a third truncated conical light guiding structure 52. The first truncated cone light guiding structure 50 has a first bottom surface 501 and a first top surface 502. The first bottom surface 501 is coupled to the joint portion 4, and the area of the first top surface 502 is smaller than the area of the first bottom surface 501 (eg, Figure 3). The second truncated conical light guiding structure 51 is disposed coaxially with the first truncated conical light guiding structure 50, that is, the second truncated conical light guiding structure 51 and the first truncated conical light guiding structure 50 are respectively coaxial with the light emitting module 1 An optical axis 10, wherein the optical axis 10 is perpendicular to one of the light-emitting surfaces 11 of the light-emitting module 1 and passes through the geometric center of the light-emitting surface 11.

As shown in FIG. 3, the second truncated cone light guiding structure 51 has a second bottom surface 511 and a second top surface 512. The second bottom surface 511 is coupled to the first top surface 502, that is, the second bottom surface 511 and the first surface. The top surface 502 is coplanar, the area of the second bottom surface 511 is smaller than the area of the first top surface 502, and the area of the second top surface 512 is smaller than the area of the second bottom surface 511. Further, the third truncated conical light guiding structure 52 is disposed coaxially with the second truncated conical light guiding structure 51, that is, the third truncated conical light guiding structure 52, the second truncated conical light guiding structure 51 and the first truncated top The conical light guiding structure 50 is respectively coaxial with the optical axis 10 of the light emitting module 1. The third truncated conical light guiding structure 52 has a third bottom surface 521 and a third top surface 522, and the third bottom surface 521 is coupled to the second top surface. 512, that is, the third bottom surface 521 and the second top surface 512 are coplanar, the area of the third bottom surface 521 is smaller than the area of the second top surface 512, and the area of the third top surface 522 is smaller than the area of the third bottom surface 521.

Further, the edge of the first bottom surface 501 of the first truncated conical light guiding structure 50 (ie, the point B1) is along the edge of the second bottom surface 511 of the second truncated conical light guiding structure 51 (ie, the point B2) along the second bottom surface. The radial direction X1 of the 511 extends a first bottom surface radial distance C1, and the edge of the first top surface 502 of the first truncated conical light guiding structure 50 (ie, the point T1) is defined by the second truncated conical light guiding structure 51. The edge of the second bottom surface 511 (ie, the point B2) extends along the radial direction X1 of the second bottom surface 511 by a first top surface radial distance D1, wherein the first bottom surface radial distance C1 is greater than the first top surface radial distance D1. . The edge of the second bottom surface 511 of the second truncated conical light guiding structure 51 (ie, the point B2) is the diameter of the third bottom surface 521 of the third truncated conical light guiding structure 52 (ie, the point B3) along the third bottom surface 521. A second bottom surface radial distance C2 extends from the direction X1, and the second top surface 512 of the second truncated conical light guiding structure 51 (ie, the point T2) is defined by the third bottom surface 521 of the third truncated conical light guiding structure 52. The edge (ie, point B3) extends along a radial direction X1 of the third bottom surface 521 by a second top surface radial distance D2, wherein the second bottom surface radial distance C2 is greater than the second top surface radial distance D2.

In this embodiment, the first bottom surface radial distance C1 may be substantially equal to the second bottom surface radial distance C2, and the first top surface radial distance D1 may be substantially equal to the second top surface radial distance D2. In practice, the first bottom surface radial distance C1 and the second bottom surface radial distance C2 may each be substantially equal to 0.2 mm, and the first top surface radial distance D1 and the second top surface radial distance D2 may be substantially equal to 0.11 mm, but this creation is not subject to this limitation.

It is worth mentioning that the edge of the first bottom surface 501 of the first truncated conical light guiding structure 50 (ie, the point B1), the edge of the second bottom surface 511 of the second truncated conical light guiding structure 51 (ie, the point B2) The edge of the third bottom surface 521 of the third truncated conical light guiding structure 52 (ie, the point B3) is co-located on a virtual spherical surface 6, that is, the edge of the first bottom surface 501 of the first truncated conical light guiding structure 50 (ie, point B1) The edge of the second bottom surface 511 of the second truncated conical light guiding structure 51 (ie, the point B2) and the edge of the third bottom surface 521 of the third truncated conical light guiding structure 52 (ie, the point B3) are coaxially arranged with each other. Wherein the radius 60 of the virtual spherical surface 6 can be substantially equal to 1.9 mm. In addition, the geometric center of the light-emitting module 1 (ie, the light-emitting axis 10) passes through The center of the sphere 61 of the virtual spherical surface 6.

In addition, the first truncated conical light guiding structure 50 further includes a first side surface 503, and the second truncated conical light guiding structure 51 further includes a second side surface 513. The first side surface 503 is connected to the first bottom surface 501 and the first surface. a top surface 502, the second side surface 513 is connected to the second bottom surface 511 and the second top surface 512, and according to the first radial distance C1 of the first bottom surface and the first top surface radial distance D1, the first side surface 503 is a conical slope and a slope thereof is determined by a first bottom radial distance C1 and a first top radial distance D1, and according to a structural design of the second bottom radial distance C2 and the second top radial distance D2, The two side faces 513 are a conical bevel and the slope is determined by the second bottom radial distance C2 and the second top radial distance D2.

In this way, the first side 503 and the second side 513 can reflect the light L1 emitted by the light-emitting module 1 to converge the light L1 emitted by the light-emitting module 1 to a specific angle (for example, 60 degrees). As shown in FIG. 3, the lens structure 3000 of the present illuminating device 1000 further includes a fourth truncated conical light guiding structure 53, a fifth truncated conical light guiding structure 54, and a sixth truncated conical light guiding structure 55. a seventh truncated conical light guiding structure 56 and an eighth truncated conical light guiding structure 57, and a third truncated conical light guiding structure 52, a fourth truncated conical light guiding structure 53, and a fifth truncated conical guide The structural design and working principle of the optical structure 54, the sixth truncated conical light guiding structure 55, the seventh truncated conical light guiding structure 56 and the eighth truncated conical light guiding structure 57 are the same as the first truncated conical light guiding structure. The 50 and the second truncated conical light guiding structure 51 are not described herein for the sake of brevity.

In addition, the spherical core 61 of the virtual spherical surface 6 is additionally located at the geometric center 310 of the curved side wall 31 of the concave cup structure 3, and the light L2 emitted by the light-emitting module 1 is partially reflected by the curved side wall 31 to In the lens structure 3000, the original lens structure 3000 can converge the light L1 emitted by the light-emitting module 1 to a certain angle, and the light can be light-covered by the curved side wall 31 of the concave cup structure 3 of the substrate 2. L2 is reflected into the lens structure 3000 to guide the lens structure 3000 The light portion 5 guides the light L2 incident on the lens structure 3000 out of the lens structure 3000 to achieve a better light-emitting effect.

Compared with the prior art, the light guiding portion of the lens structure of the present illuminating device is composed of a plurality of truncated conical light guiding structures, and the light guiding surface of the light guiding portion of the photographic lens structure is composed of the respective truncated conical light guiding structures. The bottom surface, the top surface and the side surface are formed. Therefore, the light-emitting surface of the light guiding portion of the lens structure is not a smooth continuous curved surface, which can effectively reduce the overall height of the lens structure, and is not only beneficial to the development of the lens structure in the thinning direction. The light emitted by the light-emitting module can be converged to a certain angle. In addition, the concave cup structure on the substrate of the light-emitting device can also partially reflect the light emitted by the light-emitting module into the lens structure, so that the light guiding portion of the lens structure guides the light entering the lens structure. Out of the lens structure to achieve better light output. The above descriptions are only preferred embodiments of the present invention, and all changes and modifications made by the scope of the patent application of the present invention should be covered by the present invention.

1000‧‧‧Lighting device

3000‧‧‧ lens structure

1‧‧‧Lighting module

10‧‧‧Light axis

11‧‧‧Glossy

2‧‧‧Substrate

3‧‧‧ concave cup structure

30‧‧‧Base platform

31‧‧‧ curved side walls

310‧‧‧Geometry Center

4‧‧‧Combination Department

5‧‧‧Light Guide

50‧‧‧First truncated conical light guiding structure

501‧‧‧ first bottom surface

502‧‧‧ first top surface

503‧‧‧ first side

51‧‧‧Second truncated conical light guiding structure

511‧‧‧second bottom surface

512‧‧‧second top surface

513‧‧‧ second side

52‧‧‧The third truncated conical light guiding structure

521‧‧‧ third bottom

522‧‧‧ third top surface

53‧‧‧Four truncated conical light guiding structure

54‧‧‧Fixed truncated conical light guiding structure

55‧‧‧6th truncated conical light guiding structure

56‧‧‧The seventh truncated conical light guiding structure

57‧‧‧The eighth truncated conical light guiding structure

6‧‧‧Virtual spherical surface

60‧‧‧radius

61‧‧‧ ball heart

B1, B2, B3, T1, T2‧‧

D‧‧‧Distance

X1‧‧‧ radial direction

C1‧‧‧first bottom radial distance

D1‧‧‧first top radial distance

C2‧‧‧Second bottom radial distance

D2‧‧‧Second top radial distance

L1, L2‧‧‧ rays

Claims (12)

A light-emitting device includes: a substrate having a concave cup structure formed thereon, the concave cup structure having a base platform and an arc-shaped side wall surrounding the base platform; and a light-emitting module disposed on the base platform And a lens structure, comprising: a joint portion coupled to the substrate and covering the concave cup structure; and a light guiding portion disposed on the joint portion, the light guiding portion comprising: a first a truncated conical light guiding structure having a first bottom surface and a first top surface, the first bottom surface being coupled to the joint portion; and a second truncated conical light guiding structure and the first truncated cone guide The light structure is coaxially disposed, the second truncated cone light guiding structure has a second bottom surface, and the second bottom surface is coupled to the first top surface; wherein a portion of the light emitted by the light emitting module is reflected to the curved sidewall In the lens structure, the light guiding portion is configured to guide light incident into the lens structure out of the lens structure. The illuminating device of claim 1, wherein the second truncated cone light guiding structure further has a second top surface, the area of the first top surface is smaller than the area of the first bottom surface, and the area of the second bottom surface is smaller than The area of the first top surface, and the area of the second top surface is smaller than the area of the second bottom surface. The illuminating device of claim 1, wherein an edge of the first bottom surface extends from a rim of the second bottom surface along a radial direction of the second bottom surface by a first bottom surface, the edge of the first top surface A first top surface radial distance extends from an edge of the second bottom surface along a radial direction of the second bottom surface, and the first bottom surface has a radial distance greater than the first top surface radial distance. The illuminating device of claim 3, wherein the first bottom surface has a radial distance substantially equal to 0.2 millimeters Meters, and the first top surface radial distance is substantially equal to 0.11 mm. The illuminating device of claim 1, wherein the second truncated cone light guiding structure further has a second top surface, the area of the first top surface is smaller than the area of the first bottom surface, and the area of the second bottom surface is smaller than The area of the first top surface, the area of the second top surface is smaller than the area of the second bottom surface, and the light guiding portion further comprises: a third truncated cone light guiding structure, and the second truncated cone The light guiding structure is disposed coaxially. The third truncated cone light guiding structure has a third bottom surface and a third top surface. The third bottom surface is coupled to the second top surface. The third bottom surface has an area smaller than the second top surface. The area of the surface, and the area of the third top surface is smaller than the area of the third bottom surface. The illuminating device of claim 5, wherein an edge of the second bottom surface extends from a rim of the third bottom surface along a radial direction of the third bottom surface by a second bottom surface, the edge of the second top surface A second top surface radial distance extends from an edge of the third bottom surface along a radial direction of the third bottom surface, and the second bottom surface has a radial distance greater than the second top surface radial distance. The illuminating device of claim 6, wherein the second bottom surface has a radial distance substantially equal to 0.2 mm and the second top surface radial distance is substantially equal to 0.11 mm. The illuminating device of claim 7, wherein the edge of the first bottom surface, the edge of the second bottom surface, and the edge of the third bottom surface are co-located on a virtual spherical surface. The illuminating device of claim 8, wherein the radius of the virtual spherical surface is substantially equal to 1.9 mm. The illuminating device of claim 8, wherein the geometric center of the illuminating module passes through a center of the virtual spherical surface. The illuminating device of claim 8, wherein the spherical center of the virtual spherical surface is co-located at a geometric center of the curved side wall. The illuminating device of claim 5, wherein an edge of the first bottom surface, an edge of the second bottom surface, and an edge of the third bottom surface are coaxially disposed with each other.