CN114076285A - Light emitting device - Google Patents

Light emitting device Download PDF

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Publication number
CN114076285A
CN114076285A CN202010812150.8A CN202010812150A CN114076285A CN 114076285 A CN114076285 A CN 114076285A CN 202010812150 A CN202010812150 A CN 202010812150A CN 114076285 A CN114076285 A CN 114076285A
Authority
CN
China
Prior art keywords
light
opening
emitting device
guide
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202010812150.8A
Other languages
Chinese (zh)
Other versions
CN114076285B (en
Inventor
曾纹利
蔡直佑
林士凯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhuzhou Torch Auto Lamp Co ltd
Original Assignee
Zhuzhou Torch Auto Lamp Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhuzhou Torch Auto Lamp Co ltd filed Critical Zhuzhou Torch Auto Lamp Co ltd
Priority to CN202010812150.8A priority Critical patent/CN114076285B/en
Priority to TW109132178A priority patent/TWI770611B/en
Publication of CN114076285A publication Critical patent/CN114076285A/en
Application granted granted Critical
Publication of CN114076285B publication Critical patent/CN114076285B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The invention discloses a light-emitting device which comprises a light source module, a connecting piece and a light guide pipe. The light source module comprises a plurality of light emitting units. The connecting piece is arranged above the light source module. The connecting piece comprises an opening, a clamping part and at least one guiding part. The light emitting units are located within the opening. The clamping portion is arranged around the opening and provided with an open side and a closed side. The guiding part is arranged on an inner surface of the clamping part and gradually protrudes from the opening side to the closing side. The guiding part is provided with a bottom surface which corresponds to the closed side, and the bottom surface and the closed side form a limiting area. The light pipe is guided from the open side along the guide part to enter the limiting area, and the bottom surface of the guide part is abutted to the light pipe.

Description

Light emitting device
Technical Field
The present invention relates to a light emitting device, and more particularly, to an assembly structure of a light emitting device.
Background
The lighting device is an indispensable tool in daily life, and is used in vehicles such as locomotives and automobiles, in addition to general household and public environments. With the development of technology, the Light source of the car Light is replaced by a Light-emitting diode (LED) Light source from a conventional halogen Light source. After Light Emitting Diode (LED) light sources are applied to vehicle lamps, various designs different from conventional vehicle lamps begin to appear, such as vehicle lamps with various line and color effects by means of light mixing tubes.
Since the Etendue (Etendue) of the light source itself is larger than that of the light mixing tube, the overall optical system is not efficient. To improve the optical efficiency, the light-mixing tube is usually placed close to the light source to increase the ratio of light entering the light-mixing tube, thereby improving the optical efficiency. However, it is not easy to make the light mixing tube close to the light source, thereby increasing the difficulty of the production process. Therefore, how to efficiently assemble the light source and the light mixing tube becomes a challenge. In addition, when the vehicle body is running, the light-emitting device is in a high vibration environment, and how to effectively fix the relative position of the light source and the light mixing tube is also a problem to be solved at present.
Disclosure of Invention
In view of the above problems, it is a primary object of the present invention to provide a light emitting device, in which a connector has an opening, a locking portion and a guiding portion, a light emitting unit is located in the opening, and the guiding portion and the locking portion guide and assemble a light guide tube, so as to solve the problem of difficulty in assembling the conventional light emitting device.
To achieve the above objective, the present invention provides a light emitting device, which includes a light source module, a connecting member and a light pipe. The light source module comprises a plurality of light emitting units. The connecting piece is arranged above the light source module and comprises an opening, a clamping part and at least one guide part. The plurality of light emitting units are located within the opening. The clamping portion is arranged around the opening and provided with an open side and a closed side. The guiding part is arranged on an inner surface of the clamping part and gradually protrudes from the opening side to the closing side. The guiding part is provided with a bottom surface which corresponds to the closed side, and the bottom surface and the closed side form a limiting area. The light pipe is guided from the open side along the guide part to enter the limiting area, and the bottom surface of the guide part is abutted to the light pipe.
According to an embodiment of the invention, the light source module further includes a heat dissipation element and a circuit board. The circuit board is arranged above the heat dissipation element, and the connecting piece and the circuit board are fixed on the heat dissipation element.
According to an embodiment of the invention, the heat dissipation element further includes a positioning column, and the circuit board and the connecting piece together form a positioning hole. The positioning column penetrates through the positioning hole.
According to an embodiment of the present invention, the light guide further includes at least one extending portion extending outward from an outer sidewall of the light guide, and a bottom surface of the guiding portion abuts against the extending portion.
According to an embodiment of the present invention, the extending portion and the guiding portion enter the limiting region after interfering with each other.
According to an embodiment of the invention, the closed side abuts against a surface of the light pipe.
According to an embodiment of the present invention, the opening of the connecting member is located in the limiting region, and an end surface of the light pipe corresponds to the plurality of light emitting units.
According to an embodiment of the present invention, an upper surface of the light emitting units is located in the opening, so that a distance is formed between the light emitting units and the end surface of the light guide.
According to an embodiment of the present invention, the connecting member further includes at least one protrusion disposed between the opening and the engaging portion. The end surface of the light pipe is abutted against the convex part, so that the plurality of light emitting units and the end surface of the light pipe have a certain distance.
According to an embodiment of the present invention, the protrusion is a rib and gradually protrudes from the open side to the closed side.
According to an embodiment of the present invention, the clamping portion has a first reflective layer disposed on an inner surface of the clamping portion.
According to an embodiment of the present invention, the light emitting device further includes a carrying unit. The bearing unit is provided with a groove and an opening at one side. The side opening is communicated with the groove, the bearing unit is arranged on the connecting piece, and the side opening corresponds to the limiting area, so that the light guide pipe is accommodated in the groove.
According to an embodiment of the invention, the carrying unit has a second reflective layer disposed on an inner surface of the recess.
In summary, the light emitting device of the present invention includes a light source module, a connecting member and a light pipe, wherein the connecting member includes an opening, a clamping portion and a guiding portion. The light emitting unit of the light source module is positioned in the opening, and the clamping portion is arranged around the opening. The clamping portion is provided with the opening side and the closed side, and the guide portion faces the structure of the closed side from the opening side, so that the light guide pipe can be guided to enter the limiting area from the opening side along the guide portion, and the assembly is simple and convenient. After the light pipe enters the limiting area, the bottom surface of the guide part is abutted to the light pipe, so that the effect of fixing the light pipe is achieved, and the relative position of the light-emitting unit and the light pipe can be stably fixed. Moreover, because the light-emitting unit is positioned in the opening, the light guide pipe can be relatively close to the light-emitting unit but can not be directly contacted with the light-emitting unit, and a reserved space is arranged between the light guide pipe and the light-emitting unit. The structural design of the connecting piece is still easy to be produced in mass, and the difficulty of the production process is not increased.
Drawings
Fig. 1 is an external view of a light-emitting device according to an embodiment of the invention;
FIG. 2 is a schematic view of the light source module and the connector shown in FIG. 1;
FIG. 3 is an exploded view of the light source module and the connector shown in FIG. 2;
FIG. 4 is a schematic partial cross-sectional view of the light emitting device shown in FIG. 1;
fig. 5 is an external view of a light-emitting device according to another embodiment of the invention.
[ notation ] to show
Light emitting device 1, 1a
Light source module 10
Light emitting unit 11
Upper surface 111
Heat dissipation element 12
Positioning post 121
Heat sink fins 122
Circuit board 13
First through hole 131
Connecting piece 20
Second through hole 21
Opening 22
Clamping part 23
Open side 231
Closed side 232
Inner surface 233
First reflective layer 234
Guide part 24
Bottom surface 241
Upper surface 25
Convex part 26
Light pipe 30
Extension 31
Outer side wall 32
End face 33
Light exit surface 34
Carrying unit 40
Groove 41
Opening 411
Side opening 42
Side wall 43
Second reflective layer 44
Positioning hole P
Limiting region R
Spacing S
Detailed Description
In order to make the technical content of the present invention more understandable for the precious examiners, preferred embodiments are specifically described below.
Fig. 1 is an external view of a light emitting device according to an embodiment of the invention, fig. 2 is a schematic view of a light source module and a connecting member shown in fig. 1, and fig. 3 is an exploded schematic view of the light source module and the connecting member shown in fig. 2, please refer to fig. 1, fig. 2, and fig. 3 at the same time. The light-emitting device 1 of the present embodiment is applied to a vehicle lamp, and preferably, can be applied to a vehicle lamp. In the present embodiment, the light emitting device 1 includes a light source module 10, a connecting member 20 and a light pipe 30. The light source module 10 includes a plurality of light emitting units 11, a heat dissipation element 12 and a circuit board 13. The light emitting units 11 are disposed on the circuit board 13, and all or part of the light emitting units 11 are controlled to emit light through a circuit (control unit) on the circuit board 13.
The circuit board 13 is disposed above the heat dissipation element 12, and the connector 20 is disposed above the circuit board 13. Specifically, the heat dissipation element 12 includes a positioning post 121 and a heat dissipation fin 122, which are respectively located on two opposite surfaces of the heat dissipation element 12. The circuit board 13 is disposed on the surface having the positioning posts 121. Correspondingly, the circuit board 13 has a first through hole 131, and the connecting member 20 has a second through hole 21 (as shown in fig. 3), and the first through hole 131 and the second through hole 21 can communicate to form a positioning hole P (as shown in fig. 1 and fig. 2). In other words, the circuit board 13 and the connector 20 together form a positioning hole P, so that the positioning post 121 of the heat dissipation element 12 can pass through the positioning hole P (the first through hole 131 and the second through hole 21), and thereby the circuit board 13 and the connector 20 are jointly fixed to the heat dissipation element 12. The heat sink fins 122 are located on a surface opposite to the circuit board 13 and the connector 20, and heat generated by the light emitting unit 11 and the circuit board 13 can be dissipated from the other surface through the heat sink fins 122.
The connecting member 20 includes an opening 22, a locking portion 23 and at least one guiding portion 24. When the connecting member 20 is disposed above the circuit board 13 of the light source module 10, the opening 22 corresponds to the light emitting unit 11, so that the light emitting unit 11 is located in the opening 22 of the connecting member 20. The catching portion 23 is disposed around the opening 22 and is perpendicular to an upper surface 25 of the connector 20 (i.e., the side surface opposite to the circuit board 13). The engaging portion 23 has an open side 231 and a closed side 232. In this embodiment, the clamping portion 23 is U-shaped, and three side walls form a closed side 232, and an opening of the U-shape is an open side 231.
The guiding portion 24 is disposed on an inner surface 233 of the engaging portion 23, and the guiding portion 24 faces the closed side 232 from the open side 231. Specifically, the connecting member 20 of the present embodiment has two guiding portions 24 and is located on two opposite sidewalls of the clamping portion 23. The guide portion 24 is a slope structure gradually protruding from the open side 231 toward the closed side 232, so that the opening width of the open side 231 is gradually reduced toward the closed side 232. The guiding portion 24 has a bottom surface 241 corresponding to the sealing side 232. The bottom surface 241 and the closed side 232 form a limiting region R (as shown in fig. 2 and 3) for limiting and fixing the light pipe 30 (as shown in fig. 1).
During assembly, the light guide tube 30 can be guided from the opening side 231 along the guiding portion 24 into the limiting region R. Generally, the light pipe 30 is a plastic member, and the connecting member 20 of the present embodiment may also be a plastic member. The assembly personnel or the apparatus can firstly make the light guide 30 and the guide part 24 enter the limiting region R in an interference manner along with the structure that the guide part 24 gradually protrudes from the open side 231 to the closed side 232 corresponding to the open side 231. Next, the bottom surface 241 of the guide portion 24 abuts against the light guide 30, thereby fixing the light guide 30 in the stopper region R.
Preferably, as shown in fig. 1, the light guide 30 further includes at least one extension portion 31, and the bottom surface 241 of the guide portion 24 abuts against the extension portion 31 of the light guide 30. In the present embodiment, the light guide 30 has two extending portions 31, and the extending portions 31 extend outward from an outer sidewall 32 of the light guide 30 to correspond to the positions of the guiding portions 24, respectively. During assembly, the light guide tube 30 is disposed on the open side 231, and the extension portion 31 is corresponding to the guide portion 24, so that the extension portion 31 can move toward the closed side 232 along the inclined structure of the guide portion 24. After the extension 31 and the guiding portion 24 interfere with each other, the light guide 30 and the extension 31 enter the limiting region R. Then, the bottom surface 241 of the guide portion 24 abuts against the extension portion 31, thereby fixing the light guide 30 in the stopper region R. Preferably, the area of the limiting region R is matched with the thickness of the light pipe 30, so that the closed side 232 can abut against the surface of the light pipe 30 after the light pipe 30 is placed in the limiting region R.
Preferably, the bottom surface 241 of the guiding portion 24 is perpendicular to the inner surface 233 of the clamping portion 23. Specifically, the whole of the guiding portion 24 of the present embodiment is a right triangle, the hypotenuse of which is the inclined plane structure, one of which is connected to the inner surface 233 of the clamping portion 23, and the other is the bottom surface 241. Correspondingly, the extension portion 31 has a flat surface, so that the bottom surface 241 can firmly abut against the extension portion 31 without shaking.
Preferably, the connecting member 20 further includes at least one protrusion 26, and the embodiment is illustrated by two protrusions 26 disposed on two opposite sides of the opening 22. In detail, the protrusion 26 is located on the upper surface 25 of the connector 20 and is disposed between the opening 22 and the clamping portion 23. The protrusion 26 is a rib and gradually protrudes from the open side 231 toward the closed side 232. Specifically, the front end of the projection 26 (i.e., the end closer to the open side 231) has a lower height and gradually projects toward the closed side 232. When the light guide 30 is placed on the open side 231, the bottom edge of the light guide 30 contacts the front end (lower height) of the convex portion 26. When the light pipe 30 is pushed to the closed side 232, the convex portion 26 gradually protrudes to further guide the light pipe 30 into the limiting region R. In other words, the structure of the protrusion 26 gradually protrudes can achieve the effect of a slide rail.
Fig. 4 is a partial cross-sectional view of the light emitting device shown in fig. 1, please refer to fig. 1 and fig. 4. Since the opening 22 of the connecting member 20 and the light guide 30 are located in the limiting region R, an end surface 33 of the light guide 30 can correspond to the light emitting unit 11 to receive the light generated by the light emitting unit 11. The light emitted by the light emitting unit 11 can have different colors, and the light enters the light guide 30 through the opening 22, and generates a light mixing effect during the transmission process in the light guide 30. In other words, the light guide 30 of the present embodiment can be used as a light mixing tube.
The light emitting unit 11 of the present embodiment is disposed in the opening 22, and an upper surface 111 of the light emitting unit 11 is located in the opening 22. In other words, the upper surface 111 of the light emitting unit 11 does not protrude out of the opening 22, but is inside the opening 22. In addition, the end face 33 of the light guide 30 abuts against the convex portion 26, so that the light emitting unit 11 and the end face 33 of the light guide 30 have a certain distance (as shown in fig. 4) to prevent the end face 33 of the light guide 30 from directly contacting the light emitting unit 11. In other embodiments, even if the protrusion 26 is not provided, the light emitting unit 11 and the end surface 33 of the light guide 30 may have a distance S by the structure in which the light emitting unit 11 is disposed in the opening 22. The projections 26 are preferred means of increasing the spacing S.
The light pipe 30 is usually made of a material that expands with heat and contracts with cold. If the end surface 33 of the light guide 30 directly contacts the light emitting unit 11, the light guide 30 increases in volume due to thermal expansion property at the time of temperature rise, and presses and damages the light emitting unit 11. In the present embodiment, the light emitting unit 11 is disposed in the opening 22 or the protrusion 26 is disposed, so that a space (space S) is reserved between the light emitting unit 11 and the end surface 33 of the light guide 30, thereby preventing the light guide 30 from damaging the light emitting unit 11 due to thermal expansion.
Preferably, the clamping portion 23 of the present embodiment has a first reflective layer 234 disposed on the inner surface 233 of the clamping portion 23. Preferably, the first reflective layer 234 is located in the confinement region R. The light emitted (leaked) from the region where the light guide tube 30 is connected to the connector 20 can be reflected back to the light guide tube 30 through the first reflective layer 234 for reuse, thereby improving the optical efficiency.
Fig. 5 is an external view of a light-emitting device according to another embodiment of the invention, please refer to fig. 5. It should be noted that the difference between the light emitting device 1a of the present embodiment and the light emitting device 1 of the previous embodiment is that the light emitting device 1a of the present embodiment further includes a carrying unit 40. Since other elements and their connections are the same, the reference numerals of the foregoing embodiments are used. In this embodiment, the carrying unit 40 has a recess 41 and a side opening 42, and the side opening 42 is communicated with the recess 41. The carrying unit 40 is disposed on the connecting member 20, and the side opening 42 corresponds to the limiting region R, so that the light guide 30 can pass through the side opening 42 to be accommodated in the groove 41. Specifically, the bearing unit 40 has a side wall 43 abutting against the top surface of the clamping portion 23 so that the side opening 42 corresponds to the stopper region R. Since the side opening 42 communicates with the groove 41, the light guide 30 positioned at the stopper region R can pass through the side opening 42 and be accommodated in the groove 41.
The light emitting surface 34 of the light guide 30 faces the opening 411 of the groove 41. The light inside the light guide 30 can leave the light guide 30 from the light emitting surface 34, and after being mixed again in the groove 41, the light is emitted out of the light emitting device 1a from the opening 411. Preferably, the supporting unit 40 has a second reflective layer 44 disposed on the inner surface of the recess 41. After the light leaves the light guide 30 from the light exit surface 34, the less collimated light may be reflected again when it touches the second reflective layer 44 in the groove 41, so as to increase the optical efficiency and improve the uniformity of the light mixing.
In summary, the light emitting device of the present invention includes a light source module, a connecting member and a light pipe, wherein the connecting member includes an opening, a clamping portion and a guiding portion. The light emitting unit of the light source module is positioned in the opening, and the clamping portion is arranged around the opening. The clamping portion is provided with the opening side and the closed side, and the guide portion faces the structure of the closed side from the opening side, so that the light guide pipe can be guided to enter the limiting area from the opening side along the guide portion, and the assembly is simple and convenient. After the light pipe enters the limiting area, the bottom surface of the guide part is abutted to the light pipe, so that the effect of fixing the light pipe is achieved, and the relative position of the light-emitting unit and the light pipe can be stably fixed. Moreover, because the light-emitting unit is positioned in the opening, the light guide pipe can be relatively close to the light-emitting unit but can not be directly contacted with the light-emitting unit, and a reserved space is arranged between the light guide pipe and the light-emitting unit. The structural design of the connecting piece is still easy to be produced in mass, and the difficulty of the production process is not increased.
It should be noted that the above-mentioned embodiments are merely examples for convenience of description, and the scope of the claims of the present invention should be determined by the appended claims rather than by the limitation of the above-mentioned embodiments.

Claims (13)

1. A light-emitting device, comprising:
a light source module, including multiple light emitting units;
a connecting piece, set up in the top of this light source module, this connecting piece includes:
an opening, wherein the plurality of light-emitting units are positioned in the opening;
the clamping part is arranged around the opening and is provided with an open side and a closed side; and
the guide part is arranged on an inner surface of the clamping part, gradually protrudes from the open side to the closed side, is provided with a bottom surface corresponding to the closed side, and forms a limit area with the closed side; and
a light pipe, which is guided from the open side along the guiding part to enter the limiting area, and the bottom surface of the guiding part is connected with the light pipe.
2. The light-emitting device according to claim 1, wherein the light source module further comprises a heat sink and a circuit board, the circuit board is disposed above the heat sink, and the connecting member and the circuit board are fixed to the heat sink.
3. The light-emitting device according to claim 2, wherein the heat-dissipating element further comprises a positioning post, the circuit board and the connecting member together form a positioning hole, and the positioning post passes through the positioning hole.
4. The light-emitting device according to claim 1, wherein the light guide further comprises at least one extension portion extending outward from an outer sidewall of the light guide, the bottom surface of the guide abutting the extension portion.
5. The light-emitting device according to claim 4, wherein the extension portion and the guiding portion enter the limiting region after interfering with each other.
6. The light-emitting device of claim 1, wherein the closed side abuts a surface of the light pipe.
7. The lighting apparatus according to claim 1, wherein the opening of the connecting member is located in the limiting region, and an end of the light pipe corresponds to the light emitting units.
8. The light-emitting device according to claim 7, wherein an upper surface of the light-emitting units is located in the opening, such that the light-emitting units are spaced apart from the end surface of the light guide.
9. The lighting device as claimed in claim 7, wherein the connecting member further comprises at least one protrusion disposed between the opening and the engaging portion, and the end surface of the light guide tube abuts against the protrusion, so that the light emitting units are spaced apart from the end surface of the light guide tube.
10. The light-emitting device according to claim 9, wherein the protrusion is a rib and gradually protrudes from the open side toward the closed side.
11. The light-emitting device of claim 1, wherein the clip portion has a first reflective layer disposed on the inner surface of the clip portion.
12. The light-emitting device according to claim 1, further comprising:
the bearing unit is provided with a groove and a side opening, the side opening is communicated with the groove, the bearing unit is arranged on the connecting piece, and the side opening corresponds to the limiting area, so that the light guide pipe is accommodated in the groove.
13. The light-emitting device according to claim 12, wherein the carrier unit has a second reflective layer disposed on an inner surface of the recess.
CN202010812150.8A 2020-08-13 2020-08-13 Light emitting device Active CN114076285B (en)

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Application Number Priority Date Filing Date Title
CN202010812150.8A CN114076285B (en) 2020-08-13 2020-08-13 Light emitting device
TW109132178A TWI770611B (en) 2020-08-13 2020-09-17 Light emitting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010812150.8A CN114076285B (en) 2020-08-13 2020-08-13 Light emitting device

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CN114076285A true CN114076285A (en) 2022-02-22
CN114076285B CN114076285B (en) 2024-02-02

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