CN202884803U - Direct-type light source guiding structure - Google Patents

Abstract

A straight-forward light source guide structure is used for guiding light rays emitted by a plurality of light emitting diodes arranged on a circuit board, and comprises: the light guide structure comprises a plurality of micro lenses, each micro lens is provided with a light emitting part, a first light guide part and an arc-shaped reflecting surface connected with the light emitting part and the first light guide part, the reflecting surfaces are respectively arranged on the first light guide parts in a surrounding mode, the reflecting surfaces of any two adjacent micro lenses are mutually overlapped and form a continuous curved surface, and each first light guide part comprises a bottom surface and a ring side surface connected with the bottom surface. Therefore, the light emitted by the light emitting diodes can provide the same illumination quality as a single light source after passing through the micro lenses respectively.

Description

Straight forward light source guide structure

technical field

The utility model relates to a light source guiding structure, in particular to a straight-in type light source guiding structure.

Background technique

When a single light-emitting diode is irradiated on an object, it will produce a shadow, and when two or more light-emitting diodes are irradiated on the object, a corresponding number of shadows will be produced. Among them, when multiple point light sources are used as illumination, the emitted light is partially blocked by a non-transparent object, and the shadows produced by the irradiated objects overlap, that is, a so-called ghost image is generated. The generation of the above-mentioned ghost images is likely to cause visual fatigue of human eyes.

Therefore, the inventor feels that the above-mentioned defects can be improved, carefully observes and studies them, and combines the application of theories to propose a utility model that is reasonably designed and effectively improves the above-mentioned defects.

Utility model content

The utility model relates to a straight-forward light source guiding structure, in particular to a straight-forward light source guiding structure with a plurality of microlenses for guiding the direction of light emitted by a light-emitting diode.

The embodiment of the utility model provides a straight-forward light source guiding structure, which is used to guide the light emitted by a plurality of light-emitting diodes arranged on a circuit board. The straight-forward light source guiding structure includes: a plurality of microlenses , each microlens has a light exit portion, a first light guide portion, and an arc-shaped reflective surface connected to the light exit portion and the first light guide portion, and these reflective surfaces are respectively arranged around the first light guide portions part, the reflective surfaces of any two adjacent microlenses overlap each other and form a continuous curved surface, each first light guide part includes a bottom surface and a ring side connected to the bottom surface, each ring side is connected to each reflection There is an opening defined at the adjoining part of the surface, and each opening corresponds to the light-emitting surface facing each LED; wherein, the light emitted by the LEDs respectively passes through the bottom surfaces and the reflective surfaces and is transmitted out of the light-emitting parts.

Further, the outer diameter of each microlens tapers from a position adjacent to each light exit portion to a position of each opening to form a truncated cone.

Further, the microlenses respectively define a central axis, and the distance between the central axes of any two adjacent microlenses is smaller than the distance between the central axes of any two separately arranged microlenses.

Further, the bottom surface of the first light guide part tapers toward the opening to form an arc shape, and the inner diameter of the side surface of the ring tapers toward the direction away from the opening.

Further, the microlens includes a plurality of second light guide parts that are respectively recessed from the light exit part, and the second light guide parts respectively include a top surface and a guide surface connected to the top surface, which are emitted from the light-emitting diodes and transmitted out respectively. Light rays from the bottom surface are respectively incident on the top surface, and light rays incident on the top surface are respectively reflected by the guide surface and are respectively emitted toward directions away from the microlens.

Further, the straight-in light source guiding structure includes a combination part and a connecting column, the combination part is formed extending from the light exit part to the inside of the light exit part, and the connection post is formed extending from the combination part and is adjacent to the microlens.

Further, the straight-in light source guiding structure includes a combination part and a plurality of connecting posts, the combination part is formed extending from the light exit part to the outside of the light exit part, and the connection posts are formed extending from the combination part and adjacent to the microlens.

Further, the connecting posts are arranged at intervals, and the connecting posts are respectively connected to the circuit board.

Further, the micro-lenses are arranged in a line, and the size of the opening of each micro-lens is larger than the area of the light-emitting surface of each light-emitting diode.

Further, the direct-type light source guiding structure includes a lamp holder, the microlens is arranged inside the lamp holder, and the light exit part communicates with the outside.

In order to enable a further understanding of the features and technical content of the present utility model, please refer to the following detailed description and accompanying drawings of the present utility model, but these descriptions and accompanying drawings are only used to illustrate the present utility model, rather than to the present invention. The scope of the claims of the utility model shall not be limited in any way.

Description of drawings

Fig. 1 is a perspective view of the first embodiment of the straight-in light source guiding structure of the utility model;

Fig. 2A is another perspective view of the first embodiment of the straight-in light source guiding structure of the present invention;

Fig. 2B is a three-dimensional schematic diagram of the direct-type light source guiding structure of the present invention;

Fig. 3 is a three-dimensional cross-sectional view of the first embodiment of the straight-in light source guiding structure of the present invention;

Fig. 4 is a light path diagram of the light from the light emitting diode passing through the straight-in light source guiding structure of the first embodiment of the in-line light source guiding structure of the present invention;

Fig. 5 is a perspective view of the second embodiment of the straight-in light source guiding structure of the utility model;

Fig. 6 is another perspective view of the second embodiment of the direct-type light source guiding structure of the present invention;

Fig. 7 is a cross-sectional view of the second embodiment of the straight-in light source guiding structure of the present invention;

Fig. 8 is a light path diagram of light from a light-emitting diode passing through a straight-in light source guiding structure in the second embodiment of the present invention;

Fig. 9 is a three-dimensional exploded view of the straight-in light source guiding structure and lamp holder of the present invention;

Figure 10 is a cross-sectional view of the radiator of the lamp holder of the direct-type light source guiding structure of the present invention; and

Fig. 11 is a three-dimensional assembled view of the lamp holder of the direct-type light source guiding structure of the present invention.

[Description of main component symbols]

1 circuit board

10 holes

2 LEDs

3 microlenses

31 light emitting part

32 reflective surface

33 The first light guide

330 Bottom

331 ring side

332 opening

34 Second light guide

340 Top

341 guide surface

35 combination department

36 connecting column

4 lamp holders

40 aluminum body

400 holes

41 outer ring

410 Fixing hole

42 Radiator

420 fins

421 piercing

422 The first container

423 Second storage part

43 bracket

430 ring body

431 fixed feet

4310 through hole

44 electrical separator

440 disc body

441 bump

442 guide hole

45 power supply

46 electrical cover

460 storage room

461 positioning hole

C central axis

L0, L0', L1, L1', L2, L2' rays

Detailed ways

﹝The first embodiment﹞

The embodiments described below have mentioned numbers or the like, which are only used as the scope of application of the present invention, and are not intended to limit the present invention.

Please refer to Figure 9. The straight forward light source guiding structure of the utility model is used for guiding the light emitted by a plurality of light emitting diodes 2 arranged on a circuit board 1 .

Please refer to Figure 1. The straight forward light source guiding structure of the utility model includes nine microlenses 3 and a lamp holder 4 (as shown in Fig. 11 ).

Wherein, the shapes of the microlenses 3 are all truncated cones, and the microlenses 3 are arranged in a ring shape. Wherein, any two adjacent partial blocks of the microlens 3 overlap each other.

Furthermore, for the convenience of description on the overall drawing, only a plurality of central axes C are shown and marked in FIG. 3 . Referring to FIG. 3 and FIG. 4 , in more detail, the major axis directions of these cylindrical microlenses 3 define a central axis C respectively. Wherein, the distance between the central axes C of any two overlapping microlenses 3 is smaller than the distance between the central axes C of two non-overlapping microlenses 3 . However, the distance between the central axes C of any two overlapping microlenses 3 is not intended to limit the present invention.

Please refer to Figure 3. The appearance of each microlens 3 in the present invention is substantially the same, and each microlens 3 has a light emitting portion 31 , a reflecting surface 32 and a first light guiding portion 33 . Moreover, the straight-through light source guiding structure of the present invention further includes a combination part 35 and three connecting columns 36 .

Please refer to Figure 3 again. The outer diameter of the horizontal cross-sectional area of each microlens 3 of the light exit portion 31 tapers from a position adjacent to the light exit portion 31 toward a position of the first light guide portion 33 , and the light exit portions 31 of these microlenses 3 are all located on the same plane.

Please refer to Figure 4. The outer diameter of the horizontal cross-sectional area of each reflective surface 32 is the outer diameter of the horizontal cross-sectional area of each microlens 3 . In other words, the reflective surface 32 is in a tapered arc shape. Furthermore, the partial reflection surfaces 32 of any two adjacent microlenses 3 are connected to each other and form a continuous curved surface.

Please refer to FIG. 3 , each first light guide portion 33 includes an arc-shaped bottom surface 330 and a ring side surface 331 connected to the bottom surface 330 . An opening 332 is defined between each ring side surface 331 and each reflective surface 32 .

Wherein, the bottom surfaces 330 of the first light guide portions 33 are tapered toward the openings 332 to form a convex arc shape, and the inner diameters of the ring side surfaces 331 are tapered in a direction away from the openings 332 . The first light guide portions 33 of any two adjacent microlenses 3 do not overlap each other. In other words, the openings 332 are spaced apart from each other.

Please refer to Figure 4. The opening 332 of each microlens 3 corresponds to the light-emitting surface of each LED 2 , and the size of each opening 332 is larger than the area of the light-emitting surface of each LED 2 .

Wherein, there is a gap (not shown) between each opening 332 and the light-emitting surface of each LED 2 , the distance of these gaps is determined according to user requirements, but is not intended to limit the present invention.

Please refer to Figure 1. The combining portion 35 is formed by a transparent plate extending inwardly from the light emitting portions 31 . In other words, these light emitting parts 31 and the combining part 35 are integrally formed.

Please refer to Figure 3. Alternatively, the combining portion 35 is a translucent ring-shaped plate extending outward from the light exiting portions 31 . However, the ways in which the light emitting portions 31 are connected to the combination portion 35 are not intended to limit the present invention.

Please refer to Figure 1. The number of connecting columns 36 is one. The connecting posts 36 are respectively connected to the center of the assembly part 35 and the circuit board 1 (as shown in FIG. 9 ), and the microlenses 3 surround the connecting posts 36 . Preferably, the combination part 35 and the connecting column 36 are integrally formed.

Please refer to Figure 2A. The number of connecting posts 36 is three, and these connecting posts 36 are formed by extending from the combination part 35 . In other words, the connecting posts 36 , the microlenses 3 and the combination part 35 are integrally formed.

Please refer to Figure 9. The connecting posts 36 are respectively connected to the plurality of openings 10 of the circuit board 1 to provide a stable structure.

In more detail, the combination part 35 and the connecting post 36 are made by injection molding or other molding methods, which can save manufacturing time and cost, but the forming method of the combining part 35 and the connecting post 36 as well as the quantity and connection method of the connecting post 36 Neither is used to limit the utility model.

Please refer to Figure 2B. The arrangement of these microlenses 3 is not limited to the ring-shaped overlapping arrangement. For example, these microlenses 3 may be arranged in a linear overlapping arrangement, a triangular overlapping arrangement or a rectangular overlapping arrangement. The above-mentioned arrangement of the microlenses 3 is only within the scope of application of the present invention, and is not intended to limit the present invention.

Please refer to FIG. 4 , which is a light path diagram of these LEDs 2 . The light rays L0', L1, L1', L2, and L2' emitted by these light-emitting diodes 2 are respectively projected on each bottom surface 330 and each ring side surface 331 as follows:

Firstly, the light L0' projected on the bottom surface 330 will directly exit the light exit portion 31, or the light L0' will be refracted by the bottom surface 330 and then exit the light exit portion 31.

Furthermore, the light rays L1 and L1' projected on the side surface 331 of the ring are reflected on the bottom surface 330 and then emitted through the light emitting portion 31 . Another part of light L2, L2' will be refracted by the ring side surface 331, then reflected by the reflective surface 32, and finally emitted through the light exit portion 31.

More specifically, the light incident on the arc-shaped bottom surface 330 from various angles is refracted, and passes through the light exit portion 31 approximately parallel to each other, so that when the light from the light emitting diodes 2 irradiates the object, it is as if a single illumination source irradiates the object. Object, which can effectively reduce the phenomenon of ghosting when light is projected onto the object. In order to provide a ghost-free lighting quality, and further reduce the fatigue and discomfort caused by the user when using the eyes under the light for a long time.

Please refer to Fig. 9, the lamp holder 4 of the present utility model (as Fig. 11 ) includes an aluminum body 40, an outer ring 41, a radiator 42, a bracket 43, an electrical separator 44, a power supply 45 and An electric cover 46.

Please refer to Figure 9. The appearance of the aluminum body 40 is disc-shaped and includes four openings 400 .

Furthermore, the sidewall of the outer ring 41 has four fixing holes 410 arranged at intervals. The inner diameter of the outer ring 41 is slightly larger than the outer diameter of the aluminum body 40 .

Please refer to Figure 10. The radiator 42 is cylindrical and includes a plurality of fins 420 arranged at intervals, and the radiator 42 respectively has a plurality of through holes 421 , a first accommodating portion 422 and a second accommodating portion 423 . Wherein, the volume of the first accommodating portion 422 is smaller than that of the second accommodating portion 423 . The positions of the through holes 421 of the heat sink 42 correspond to the positions of the openings 400 of the aluminum body 40 .

Please refer to Figure 9. The bracket 43 includes a ring-shaped body 430 and four fixing legs 431 . The fixing feet 431 are disposed on the annular body 430 at intervals.

Furthermore, ends of the fixing feet 431 away from the ring-shaped body 430 respectively have a through hole 4310 . Wherein, the positions of some of the through holes 4310 correspond to the positions of the fixing holes 410 of the outer ring 41 .

Please refer to Figure 9 again. The electrical separator 44 includes a plate body 440 and four protrusions 441 . The plate body 440 has two guide holes 442 , and the positions of these guide holes 442 correspond to the positions of the through holes 421 of the heat sink 42 . The protrusions 441 have the same shape and protrude outward from the disc body 440 .

Moreover, the electrical appliance cover 46 has a storage chamber 460 and two positioning holes 461 . The positions of the positioning holes 461 correspond to the positions of the through holes 421 of the heat sink 42 .

Please refer to Figure 10. The following is a brief description of the connection relationship between the lamp holder 4 and the direct-type light source guiding structure of the present invention.

Please refer to Figure 9 and Figure 10. When the circuit board 1 and the direct light source guiding structure are disposed in the first accommodating portion 422 , the light emitting portion 31 of the microlens 3 (as shown in FIG. 1 ) faces outside of the heat sink 42 . The aluminum body 40 abuts against the edges of the combination parts 35 . Through the opening 400 of the aluminum body 40 and the through hole 421 of the heat sink 42 , the aluminum body 40 is locked to one side of the heat sink 42 .

Please refer to Figure 9. The power supply element 45 is accommodated in the receiving chamber 460 and is electrically connected to the circuit board 1 and the light emitting diodes 2 . The power element 45 abuts against the protrusions 441 . The electrical separator 44 is made of heat insulating material, which is used to prevent the power supply unit 45 from directly contacting the heat sink 42 to cause overheating and damage. Through the positioning holes 461 , the guide holes 442 and the through holes 421 , the electrical cover 46 and the electrical separator 44 are locked to the other side of the radiator 42 .

Please refer to Figure 9 again. The bracket 43 is locked to the outer ring 41 through the through hole 4310 of the fixing leg 431 and the fixing hole 410 of the outer ring 41 . The through holes 4310 of the other two fixing feet 431 are used to provide a housing (not shown) to cover the lamp holder 4 (as shown in FIG. 11 ) and then lock it.

Above, the types of components included in the lamp holder 4 and their connection methods are only within the scope of this embodiment, and are not intended to limit the present invention.

﹝Second Embodiment﹞

Please refer to Fig. 6, which is the second embodiment of the present utility model. This embodiment is similar to the first embodiment, and the same place will not be repeated. The difference between the two is that each microlens 3 also includes a plurality of second light guiding parts 34 .

Please refer to Figure 5 and Figure 7. Wherein, the thickness corresponding to the central axis C of the linear light source guiding structure of the present invention is greater than the thickness corresponding to the central axis C of the linear light source guiding structure in the first embodiment.

Furthermore, when the direct-entry light source guiding structure of the present invention is disposed in the second accommodating portion 423 (as shown in FIG. 10 ), the second light guiding portions 34 are recessed from the light exiting portions 31 respectively. The position of each second light guide part 34 is corresponding to one side of each first light guide part 33 .

Please refer to Figure 7. In detail, each second light guide portion 34 respectively includes a top surface 340 and a guide surface 341 connected to the top surface 340 . Each top surface 340 is planar and opposite to each bottom surface 330 , and the outer diameter of each top surface 340 is substantially the same as the outer diameter of each bottom surface 330 .

Moreover, the area of each guiding surface 341 is larger than the ring side surface 331 of each first light guiding portion 33 . Wherein, the outer diameters of the guiding surfaces 331 are tapered toward the direction of the top surfaces 340 respectively. The reflective surface 32 in this embodiment has a larger area than the reflective surface 32 in the first embodiment.

Please refer to FIG. 8 , which is a light path diagram of the LEDs 2 of the second embodiment. The light L0, L1, L1' emitted from the light emitting diodes 2 and transmitted through the bottom surface 330 of the first light guide portion 33 enters the top surface 340 respectively. The light rays L0, L1, L1' incident on the top surfaces 340 are respectively refracted by the guide surfaces 341 and are emitted toward directions away from the microlenses 3 respectively.

More specifically, the light emitted by the LEDs 2 passes through the first light guides 33 , and then passes through the second light guides 34 to adjust the concentration and uniformity of the light to increase the efficiency of eliminating ghosting.

To sum up, the straight forward light source guide structure of the present invention passes through the reflective surface in the microlens and the structure of the light guide part, and overlaps a plurality of microlenses, so as to eliminate the The resulting ghost image reduces the fatigue and discomfort caused by using the eyes under the light.

However, the above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the scope of patent protection of the present utility model. Therefore, all equivalent changes made by using the description and drawings of the utility model are all included in this utility model in the same way. Within the scope of protection of the claims of the utility model, it is agreed to declare.

Claims (10)

1. A straight-forward light source guiding structure, characterized in that it is used to guide the light emitted by a plurality of light-emitting diodes arranged on a circuit board, and the straight-forward light source guiding structure comprises: A plurality of microlenses, each of which has a light exit portion, a first light guide portion, and an arc-shaped reflective surface connected to the light exit portion and the first light guide portion, and the reflective surfaces are respectively Surrounding the first light guide part, the reflective surfaces of any two adjacent microlenses overlap each other and form a continuous curved surface, each of the first light guide parts includes a bottom surface and a The side surfaces of the ring connected to the bottom surface, each of the side surfaces of the ring and each of the reflective surfaces is adjacent to define an opening, and each of the openings is correspondingly facing the light-emitting surface of each of the light-emitting diodes. 2. The linear light source guiding structure according to claim 1, wherein the outer diameter of each of the micro-lenses gradually increases from a position adjacent to each of the light exit parts to a position of each of the openings. Condensed into a truncated cone. 3. The linear light source guiding structure according to claim 1, wherein the microlenses respectively define a central axis, and the distance between the central axes of any two adjacent microlenses is less than any The distance between the central axes of two separately arranged microlenses. 4. The linear light source guiding structure according to claim 2, wherein the bottom surface of the first light guiding part is tapered toward the direction of the opening to form an arc shape, and the side surface of the ring The inner diameter tapers away from the opening. 5. The linear light source guiding structure according to claim 1, wherein the microlens comprises a plurality of second light guide parts that are respectively recessed from the light exit part, and the second light guide parts Each includes a top surface and a guide surface connected with the top surface. 6. The straight-in light source guiding structure according to claim 1, characterized in that, the straight-in light source guiding structure comprises a combination part and a connecting column, and the combination part extends from the light exit part to the The inner side of the light emitting part is extended and formed, and the connecting column is formed extending from the combination part and adjacent to the microlens. 7. The linear light source guiding structure according to claim 1, characterized in that, the linear light source guiding structure comprises a combination part and a plurality of connecting columns, and the combination part extends from the light exit part to the The outer side of the light emitting part is extended and formed, and the connecting column is formed by extending from the combination part and is adjacent to the microlens. 8 . The direct-type light source guiding structure according to claim 7 , wherein the connecting columns are arranged at intervals, and the connecting columns are respectively connected to the circuit boards. 9. The linear light source guiding structure according to claim 4, wherein the micro-lenses are arranged in a line, and the size of the opening of each micro-lens is larger than the light-emitting surface of each of the light-emitting diodes area. 10. The linear light source guiding structure according to claim 1, characterized in that, the linear light source guiding structure comprises a lamp holder, the microlens is arranged inside the lamp holder, and the The light-emitting part communicates with the outside world.

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