CN202327707U - light emitting device - Google Patents

Abstract

A kind of light-emitting device, include at least a light-emitting component and a lamps and lanterns, this lamps and lanterns include a base frame, a metal base circuit board and a power drive unit, this base frame has a first side and a second side opposite to this first side, this metal base circuit board is set up in this first side of this base frame, this metal base circuit board includes a basal portion and multiple extension portions formed by peripheral bending of this basal portion and set up at intervals, this basal portion has multiple perforations, these multiple extension portions are buried in this base frame, this light-emitting component is set up in this basal portion; the power driving unit comprises a circuit substrate, wherein a first end part of the circuit substrate is provided with a plurality of convex columns which correspondingly penetrate through the through holes and are electrically connected with the metal-based circuit board.

Description

light emitting device

technical field

The utility model relates to a light-emitting device, in particular to a light-emitting device with simple manufacturing process, good heat dissipation effect and insulation, and using a light-emitting diode as a light-emitting source.

Background technique

Light emitting diodes (light emitting diodes, LEDs) have the advantages of small size, long service life, unbreakable, mercury-free, and power saving. decorative light source.

Referring to FIG. 1 , it is a sectional view of an existing light-emitting diode bulb. The LED light bulb includes a base 50 , a circuit board 52 , a plurality of LEDs 54 , a conductive connector 56 , a lampshade 58 and a power drive unit 59 . The base body 50 is a hollow tube, and the outer wall of the base body 50 is surrounded by a plurality of cooling fins 51. The plurality of cooling fins 51 can effectively increase the heat dissipation area of the base body 50, so that the plurality of light emitting The heat energy generated when the diode 54 is turned on is quickly transferred to the outside air. The circuit board 52 is disposed on the base body 50 and is electrically connected to the power driving unit 59 through a plurality of wires 53 . The plurality of light emitting diodes 54 are arranged on the circuit board 52 and are electrically connected to the circuit board 52; the conductive joint 56 is connected to the side of the seat body 50 opposite to the circuit board 52, and is connected to the power supply through two power lines 57 The drive unit 59 forms an electrical connection. The lampshade 58 is disposed on a side of the base body 50 where the plurality of LEDs 54 are disposed, such that the plurality of LEDs 54 are located between the lampshade 58 and the base body 50 .

However, since the power drive unit 59, the circuit board 52 and the conductive connector 56 must be electrically connected through the plurality of wires 53 and the power line 57 respectively, this not only increases the manufacturing process and the difficulty of manufacturing, but also Make overall production cost increase.

Contents of the invention

In view of the prior art, an object of the present invention is to provide a light-emitting device, which has a simple manufacturing process and can effectively reduce the manufacturing cost, and has the advantages of light weight and good insulation.

In order to achieve the above purpose, the utility model provides a light emitting device, which includes:

at least one light emitting element;

A light fixture, comprising:

A plastic seat body has a first side and a second side opposite to the first side;

A metal-based circuit board is arranged on the first side of the base body. The metal-based circuit board includes a base and a plurality of extending parts bent and formed from the periphery of the base and arranged at intervals. The base has a plurality of through holes. The extension part is embedded in the seat, and the light emitting element is arranged on the base;

A power drive unit includes a circuit substrate, a first end of the circuit substrate has a plurality of protrusions, and the plurality of protrusions correspondingly pass through the plurality of through holes and form an electrical connection with the metal base circuit board.

The light emitting device further includes a diffusion element disposed on the first side of the base and covering the light emitting element.

In the light-emitting device, the diffusing element includes a plurality of buckles, and the plurality of buckles are correspondingly locked in a plurality of slots on an inner wall of the base body.

The light emitting device further includes an optical lens disposed on the first side of the base and covering the light emitting element.

The light-emitting device, wherein the optical lens has an optical axis, and the optical lens includes:

A body, including:

A light incident part includes a bottom surface and a reflective surface, the bottom surface has a groove, the reflective surface is connected to the bottom surface and the distance between the reflective surface and the optical axis increases as the distance from the bottom surface gradually increases, the light emitting element is set in the groove;

a first light exit portion connected to the reflective surface, the first light exit portion has a top surface, and the top surface gradually approaches the bottom surface as it gradually approaches the optical axis; and

A second light emitting part is connected with the top surface and located above the groove.

The light-emitting device described above, wherein the top surface includes a plurality of first light-emitting surfaces and second light-emitting surfaces arranged in a staggered manner, the second light-emitting surfaces are perpendicular to the bottom surface, and the first light-emitting surfaces are parallel to the bottom surface, so that the first light-emitting surfaces The light emitting part is stepped.

The light-emitting device described above, wherein the optical lens includes a plurality of light incident parts and a light exit part, the multiple light incident parts are connected to the light exit part and protrude toward a direction away from the light exit part, and each of the light entrance parts There is a cavity, and the light-emitting element is arranged in the cavity.

The above-mentioned light-emitting device further includes a locking part, the locking part has a plurality of locking tenons, and the plurality of locking tenons are engaged in the plurality of locking slots of the base body.

In the light emitting device, the base body includes a plurality of cooling fins formed on an outer wall surface.

In the above-mentioned light-emitting device, the base body contains a plurality of heat-conducting particles with high thermal conductivity.

In the light-emitting device, at least one surface of the circuit substrate is perpendicular to an upper surface of the base.

The light-emitting device, wherein the lamp further includes an optical element, and the optical lens includes a plurality of light-incident portions and a light-exit portion, and the plurality of light-incident portions are connected to the light-exit portion and protrude toward a direction away from the light-exit portion. out, and each of the light-incident parts has a recess, and the light-emitting element is arranged in the recess.

The lamp of the light-emitting device of the present invention directly assembles the circuit substrate and the metal-based circuit board of the power drive unit and forms an electrical connection. In this way, the process can be effectively simplified and the production cost can be reduced.

Description of drawings

Fig. 1 is the sectional view of existing light-emitting diode bulb;

Fig. 2 is a partial three-dimensional exploded view of the light emitting device according to the first embodiment of the present invention;

3 is a partial assembly diagram of the light emitting device according to the first embodiment of the present invention;

4 is a cross-sectional view of a light emitting device according to a first embodiment of the present invention;

Fig. 5 is a partial exploded view of the light emitting device according to the first embodiment of the present invention;

6 is a partially exploded view of a light emitting device according to a second embodiment of the present invention;

7 is a cross-sectional view of a light emitting device according to a second embodiment of the present invention;

8 is a partial exploded view of a light emitting device according to a third embodiment of the present invention;

9 is a partial assembly diagram of a light emitting device according to a third embodiment of the present invention;

10 is a partially exploded view of a light emitting device according to a third embodiment of the present invention;

11 is a cross-sectional view of a light emitting device according to a third embodiment of the present invention;

12 is a partially exploded view of a light emitting device according to a fourth embodiment of the present invention;

Fig. 13 is a partial assembly diagram of a light emitting device according to a fourth embodiment of the present invention;

14 is a cross-sectional view of a light emitting device according to a fourth embodiment of the present invention;

Fig. 15 is a partial assembly diagram of a light emitting device according to a fifth embodiment of the present invention;

16 is a partial exploded view of a light emitting device according to a fifth embodiment of the present invention;

Fig. 17 is a cross-sectional view of a light emitting device according to a fifth embodiment of the present invention.

Explanation of reference signs:

Background technology: 50-base; 52-circuit board; 53-wire; 54-light-emitting diode; 56-conductive connector; 57-power cord; 58-lampshade; 59-power drive unit;

The utility model: 10, 10a, 20, 30, 30a-light-emitting device; 11, 21, 31-lamps; 110, 210, 310-metal base circuit board; 112, 212, 312-base; 113, 213, 313- Upper surface; 114, 214, 314-extension; 115, 215, 315-grooving; 116, 216, 316-perforation; 12, 22, 32-light emitting element; 130, 230, 330-power drive unit; 132, 232, 332-circuit substrate; 1320, 2320, 3320-first end; 1321, 2321, 3321-post; 1322, 2322, 3322-second end; 1323, 2323-groove; 1325, 2325, 3325 - circuit wiring; 1326, 2326, 3326 - board surface; 134, 234, 334 - electronic components; 140, 240, 340 - seat body; 141, 241, 341 - heat conducting particles; 142, 242, 342 - first side; 1420, 2420, 3420-surrounding wall; 1421, 2421-inner wall; 1422, 2422-card slot; 1423, 2423-outer wall; 1424, 2424, 3424-radiating fin; 144, 244, 344-second side; 150 , 250, 350, 350a-conductive pin; 160-filler; 170-diffusion element; 172-clip; 180, 280, 380-optical element; 181-body; -bottom surface; 1821-groove; 1822-reflecting surface; 184-first light-emitting part; 1842-first light-emitting surface; 1844-second light-emitting surface; 185-top surface; Recess; 284, 384-light-exiting part; 286-supporting part; 290-fastening part; 292-tenon; 318-opening;

Detailed ways

With reference to the accompanying drawings, the purpose, features and advantages of the present utility model will be better understood through the following illustrative and non-limiting detailed descriptions of preferred embodiments of the present utility model. In the accompanying drawings, The same reference numerals are used for the same or similar elements.

Referring to FIG. 2 , FIG. 3 and FIG. 4 , they are respectively a partial perspective exploded view, a partial three-dimensional assembly view and a cross-sectional view of the light emitting device according to the first embodiment of the present invention. In this embodiment, the light emitting device 10 is illustrated by taking a GU10 light bulb as an example. In actual implementation, the light emitting device 10 can be PAR series (PAR series) light bulbs, A19, A20, A60, G30 and other different types of light bulbs. The light emitting device 10 includes a lamp 11 and at least one light emitting element 12 , and the lamp 11 includes a metal core printed circuit board (MCPCB) 110 , a power drive unit 130 and a base 140 .

The metal-based circuit board 110 has good thermal conductivity and a plurality of circuit wirings (not shown) and a plurality of welding pads (not shown) are pre-formed on it. The metal-based circuit board 110 includes a base 112 and a plurality of The extending portions 114 are bent from the peripheral edge of the base portion 112 and arranged at intervals. The base 112 includes a plurality of through holes 116 , and in this embodiment, two through holes 116 are taken as an example. In actual implementation, the metal-based circuit board 110 is pre-formed with a plurality of spaced slots 115 through a stamping process, and the plurality of extending portions 114 are bent to make the metal-based circuit board 110 roughly cup-shaped.

The light-emitting element 12 is disposed on the metal-based circuit board 110, and preferably, the light-emitting element 12 is disposed on an upper surface 113 of the base 112 and is electrically connected to the metal-based circuit board 110; wherein, the light-emitting element 12 The number can be one or more. In this embodiment, one light-emitting element 12 is taken as an example, and the light-emitting element 12 is preferably a high-power light-emitting diode.

The power drive unit 130 includes a circuit substrate 132 and a plurality of electronic components 134 disposed on at least one board surface 1326 of the circuit substrate 132. The circuit substrate 132 may preferably be a printed circuit board (PCB) and pre-formed on it. There are multiple circuit wirings 1325 and welding pads (not shown in the figure). In this embodiment, two circuit wirings are taken as an example for illustration, and the actual implementation is not limited thereto. The circuit substrate 132 includes a first end portion 1320 and a second end portion 1322 opposite to the first end portion 1320, the first end portion 1320 has a plurality of protrusions 1321 and the plurality of protrusions 1321 are corresponding to the A plurality of through holes 116 are provided; in this embodiment, the first end portion 1320 includes two protrusions 1321 as an example, and the two protrusions 1321 are respectively disposed corresponding to the two through holes 116 .

The plurality of protrusions 1321 pass through the plurality of through holes 116, so that the board surface 1326 is substantially perpendicular to the upper surface 113 of the metal base circuit board 110, and the plurality of circuit wirings 1325 pass through the plurality of protrusions 1321 and the metal base. The circuit board 110 forms the electrical connections. Wherein, the metal-based circuit board 110 and the circuit substrate 132 can be electrically connected by soldering or coating conductive glue; moreover, the plurality of circuit wirings 1325 can only be arranged on one of the board surfaces 1326 of the circuit substrate 132; Alternatively, the plurality of circuit wirings 1325 can be arranged on the two board surfaces 1326 of the circuit substrate 132 at the same time, and the circuit wiring 1325 on one of the board surfaces 1326 can pass through an insulating member, such as: insulating tape, to be in contact with the metal base. The circuit board 110 achieves an insulation effect, thereby avoiding a short circuit effect. In this embodiment, the second end portion 1322 of the circuit substrate 132 further includes a plurality of grooves 1323, the plurality of grooves 1323 are provided for the two conductive pins 150 of the light emitting device 10, and the two conductive pins 150 are provided. The pin 150 is electrically connected to the power driving unit 130 .

The seat body 140 is made of polymer material with high thermal conductivity, such as thermoplastic plastic, thermosetting plastic, etc., and is integrally formed by injection molding, which has the advantages of light weight, simple manufacture and good insulation effect. Moreover, a plurality of heat-conducting particles 141 are added in the polymer material, such as: metal oxide powder, graphite powder or ceramic powder, etc., so that the base body 140 after injection molding can be quickly guided away from the heat generated by the light-emitting element 12 when it is turned on. heat energy.

4 and 5 together, the base body 140 has a first side 142 and a second side 144 opposite to the first side, the first side 142 is generally cup-shaped and has a surrounding wall 1420, the An inner wall surface 1421 of the surrounding wall 1420 has a plurality of slots 1422; an outer wall surface 1423 of the surrounding wall 1420 has a plurality of cooling fins 1424, and the plurality of cooling fins 1424 are integrally formed with the base body 140, and there are The plurality of heat-conducting particles 141 and the plurality of cooling fins 1424 are mainly used to increase the heat dissipation area of the base body 140 , thereby improving the heat dissipation effect of the base body 140 . The metal-based circuit board 110 is disposed on the first side 142 , and the extension portion 114 is embedded in the base body 140 . The second side 144 is connected to the first side 142 and is substantially tubular, and the plurality of conductive pins 150 pass through the bottom edge of the second side 144 for being inserted into an external lamp socket (not shown).

The process of actually manufacturing the light-emitting device 10 is described in detail as follows: First, a plurality of spaced slots 115 are formed on the metal-based circuit board 110 through a stamping process, and the metal-based circuit board 110 is bent along the slots 115 so that A base portion 112 and a plurality of extension portions 114 are formed, and a plurality of through holes 116 are formed in the base portion 112 . Next, a plurality of protrusions 1321 of a circuit substrate 132 of a power driving unit 130 pass through the plurality of through holes 116 and form an electrical connection with the metal-based circuit board 110 .

Afterwards, the combined metal-based circuit board 110 and the power drive unit 130 are embedded in the injection molding mold of the base body 140, so that the base body 140 directly covers the extension portion 114 and the extension portion 114 of the metal-based circuit board 110. The power drive unit 130; in this way, the joint force between the metal-based circuit board 110 and the base body 140 can be improved to avoid falling off due to external force extrusion, and the light-emitting element 12 can be lighted. The heat energy is quickly transferred to the base body 140 through the extension portion 114 , and dissipated into the outside air by the plurality of cooling fins 1424 formed on the base body 140 . Next, the light-emitting element 12 is disposed on the metal-based circuit board 110 through a soldering process. Alternatively, the light-emitting element 12 can be installed on the metal-based circuit board 110 through a soldering process first, and then the metal-based circuit board 110 provided with the light-emitting element 12 is combined with the power drive unit 130 and embedded in the base. 140 of the injection mold, so that the seat body 140 covers the plurality of extensions 114 of the metal-based circuit board 110 and the power drive unit 130 .

Furthermore, since the thickness of the circuit substrate 132 is much smaller than its width, the thickness of the base body 140 covering the power drive unit 130 is avoided from being too thick. Before the injection molding of the base body 140, the circuit substrate 132 A filling piece 160 is provided on both sides of the body respectively. As shown in FIG. 5, the filling piece 160 can preferably be a plastic piece, silicone or epoxy resin, but it is not limited to this in actual implementation. In this way, it can be used The thickness of the base body 140 is consistent, which can effectively reduce the manufacturing cost and prevent the deformation of the base body 110 .

In addition, the light emitting device 10 further includes a diffusion element 170, which is disposed on the first side 142 of the base body 140 and covers the light emitting element 130. The diffusion element 170 includes a plurality of buckles 172, the plurality of A plurality of buckles 172 are correspondingly locked in the plurality of slots 1422, so that the diffusion element 170 is located above the light emitting element 130, and the diffusion element 170 can emit the light provided by the light emitting element 12 to improve the overall appearance of the light emitting device 10. Color uniformity, and then get a more ideal spot quality.

Referring to FIG. 6 and FIG. 7 , they are respectively a partial perspective exploded view and a cross-sectional view of the light emitting device according to the second embodiment of the present invention. The light emitting device 10a of this embodiment is substantially the same as the above-mentioned first embodiment, the difference is that the light emitting device of this embodiment further includes an optical lens 180, and the optical lens 180 is disposed on the first side 142 of the base 140, And it is located between the light emitting element 12 and the diffusing element 170 and covers the light emitting element 12, so as to change the light intensity distribution of the passing light. The optical lens 180 can be a lens with a light-gathering effect or an astigmatism effect according to the light-emitting effect of the light source module 10a.

In this embodiment, the optical lens 180 has an optical axis I, and the optical axis I roughly coincides with the light emitting axis of the light emitting element 12 . The optical lens 180 includes a light-transmitting body 181 , which can be made of light-transmitting materials such as glass and plastic. The body 181 has a light incident portion 182, a first light exit portion 184 and a second light exit portion 186, the light entrance portion 182 has a bottom surface 1820 and a reflective surface 1822, the bottom surface 1820 has a groove 1821, the light emitting The element 12 is disposed in the groove 1821 . The reflective surface 1822 is connected to the bottom surface 1820 and the first light-emitting portion 184 , and the distance between the reflective surface 1822 and the optical axis I increases as the distance from the bottom surface 1820 gradually increases. The first light emitting portion 184 is connected to the reflective surface 1822 and has a top surface 185 , and the top surface 185 gradually approaches the bottom surface 1820 as it gradually approaches the optical axis I. The top surface 185 includes a plurality of first light-emitting surfaces 1842 and second light-emitting surfaces 1844 arranged staggeredly; in this embodiment, the first light-emitting surfaces 1842 are approximately parallel to the bottom surface 1820, and the second light-emitting surfaces 1844 are approximately perpendicular to The bottom surface 1820 makes the first light-emitting portion 184 in a stepped shape; moreover, the length of the second light-emitting surface 1844 in a direction perpendicular to the bottom surface 1820 decreases gradually as it approaches the optical axis I. Thereby, the distance of the light transmitted to the first light-emitting portion 184 can be shortened, the loss generated when the light is transmitted in the optical lens 180 can be reduced, and the overall thickness and weight of the optical lens 180 can be further reduced. In actual implementation, the traveling direction of the passing light can be controlled by adjusting the inclination angle of the plurality of first light-emitting surfaces 1842 of the first light-emitting portion 184 of the optical lens 180 relative to a plane perpendicular to the optical axis I.

The second light exit portion 186 is connected to the top surface 185 and is generally located above the groove 1821. The second light exit portion 186 is a Fresnel lens (Fresnel Lens), and the second light exit portion 186 can be a light-condensing lens. Fresnel lenses for functional or diverging light functions.

Referring to FIG. 8 , FIG. 9 , FIG. 10 and FIG. 11 , they are partial exploded view, partial assembled view, partial exploded view and cross-sectional view of the light emitting device according to the third embodiment of the present invention. The light emitting device 20 includes a lamp 21 , a plurality of light emitting elements 22 , an optical element 280 and an engaging part 290 . The lamp 21 includes a metal base circuit board 210 , a power driving unit 230 and a base 240 .

The metal-based circuit board 210 is pre-formed with a plurality of circuit wiring (not shown) and welding pads (not shown). The extension part 214 is provided, and the base part 212 has a plurality of perforations 216, and in this embodiment, two perforations 216 are taken as an example. In practical implementation, the metal-based circuit board 210 is pre-formed with a plurality of spaced slots 215 through a stamping process, and the extension portion 214 is bent so that the extension portion 214 is substantially perpendicular to the base portion 212 .

The plurality of light-emitting elements 22 are disposed on an upper surface 213 of the base 212, and are electrically connected to the metal-based circuit board 210. In this embodiment, four light-emitting elements 22 are used as an example, and they are not used in actual implementation. Furthermore, the plurality of light emitting elements 22 are preferably high power light emitting diodes.

The power drive unit 230 includes a circuit substrate 232 and at least one electronic component 234 disposed on at least one board surface 2326 of the circuit substrate 232. The circuit substrate 232 may preferably be a printed circuit board on which a plurality of The circuit wiring 2325 and the welding pad (not shown in the figure); in this embodiment, two circuit wiring 2325 are taken as an example for illustration, and the actual implementation is not limited thereto. The circuit substrate 232 includes a first end portion 2320 and a second end portion 2322 opposite to the first end portion 2320, the first end portion 2320 has a plurality of protrusions 2321 corresponding to the plurality of through holes 216, in In this embodiment, the first end portion 2320 includes two protrusions 2321 as an example. The plurality of protrusions 2321 pass through the plurality of through holes 216, so that the board surface 2326 is approximately perpendicular to the upper surface 231 of the metal base circuit board 210, and the plurality of circuit wirings 2325 pass through the plurality of protrusions 2321 and the metal base. The circuit board 210 forms electrical connections. The second end portion 2322 of the circuit substrate 232 further includes a plurality of grooves 2323, the plurality of grooves 2323 are provided for the two conductive pins 250 of the light emitting device 20, and the two conductive pins 250 are connected to the power supply. The driving unit 230 forms an electrical connection.

The seat body 240 is integrally molded by injection molding with a polymer material with high thermal conductivity, which has the advantages of light weight, simple manufacture and good insulation effect, and a plurality of heat-conducting particles 241 are added in the polymer material. The seat body 240 has a first side 242 and a second side 244 opposite to the first side. The first side 242 is roughly cup-shaped and has a surrounding wall 2420, and an inner wall surface of the surrounding wall 2421 2421 has a plurality of card slots 2422 . An outer wall surface 2423 of the surrounding wall 2420 has a plurality of heat dissipation fins 2424 , and the plurality of heat dissipation fins 2424 are mainly used to increase the heat dissipation area of the base body 240 , thereby improving the heat dissipation effect of the base body 240 . The metal-based circuit board 210 is disposed on the first side 242 , and the extension portion 214 is embedded in the base body 240 . The second side 244 is connected to the first side 242 and is substantially tubular, and the plurality of conductive pins 250 pass through the bottom edge of the second side 244 for being inserted into an external lamp socket (not shown).

The base body 240 covers the extension portion 214 of the metal base circuit board 210 and the power drive unit 230, so as to enhance the bonding force between the metal base circuit board 210 and the base body 240, and avoid falling off due to external force extrusion. .

In addition, the optical element 280 is disposed on the first side 242 of the base body 240 and covers the plurality of light emitting elements 22. The optical element includes a plurality of light incident portions 282 and a light exit portion 284. In this embodiment, The number of the light incident portions 282 is equal to the number of the light emitting elements 230 . The plurality of light incident portions 282 are connected to the light exit portion 284 and protrude in an arc shape toward a direction away from the light exit portion 284. Each of the light incident portions 282 has a concave cavity 2820, and the plurality of light emitting elements 22 are disposed in the light emitting portion 284. Recess 2820.

The optical element 280 further includes a plurality of support members 286 , and the plurality of support members 286 abut against the metal-based circuit board 210 to support the optical element 280 above the plurality of light emitting elements 280 .

The engaging member 290 has a plurality of locking tenons 292 , and the plurality of locking tenons 292 are engaged in the plurality of locking grooves 2422 of the base body 240 to fasten the optical lens 280 .

Referring to FIG. 12 , FIG. 13 and FIG. 14 , they are respectively a partial exploded view, a partial assembly view and a cross-sectional view of the light emitting device according to the fourth embodiment of the present invention. In this embodiment, the light emitting device 30 is described by taking an MR16 light bulb as an example, but it is not limited to this in actual implementation. The light emitting device 30 includes a lamp 31 and at least one light emitting element 32 , and the lamp 31 includes a metal base circuit board 310 , a power driving unit 330 , a base 340 and an optical element 380 .

The metal-based circuit board 310 includes a base portion 312 and a plurality of extending portions 314 bent from the periphery of the base portion 312 and spaced apart. In this embodiment, the extending portions 314 are substantially perpendicular to the base portion 312 . The base 312 includes a plurality of through holes 316 and a plurality of openings 318 . In this embodiment, two through holes 316 are taken as an example, and four openings 318 are taken as an example, which are not limited in actual implementation.

The plurality of light-emitting elements 32 are disposed on an upper surface 313 of the base 312 and are electrically connected to the metal-based circuit board 310, and in this embodiment, seven light-emitting elements 32 are taken as an example, and preferably can be High-power light-emitting diodes are not limited to this in actual implementation.

The power drive unit 330 includes a circuit substrate 332 and at least one electronic component 334 disposed on at least one surface 3326 of the circuit substrate 332. The electronic component 334 can be, for example, a power converter or other active or passive electronic components. The circuit substrate 332 can preferably be a printed circuit board and a plurality of circuit wiring 3325 and welding pads (not shown) are pre-formed on it; Time is not limited.

A first end portion 3320 of the circuit substrate 332 includes a plurality of protrusions 3321 , and in this embodiment, two protrusions 3321 are taken as an example. The plurality of protrusions 3321 pass through the plurality of through holes 316, so that the board surface 3326 is approximately perpendicular to the upper surface 313 of the metal base circuit board 310, and the plurality of circuit wirings 3325 pass through the plurality of protrusions 3321 and the metal base. The circuit board 310 forms the electrical connections.

The optical element 380 includes a plurality of light incident portions 382 , a light exit portion 384 and a plurality of engaging portions 386 , the plurality of light incident portions 382 are connected to the light exit portion 384 and are arc-shaped toward a direction away from the light exit portion 384 Each of the light incident portions 382 has a recess 3820, and each of the light emitting elements 32 is disposed in the recess 3820; in this embodiment, the number of the plurality of light incident portions 382 is equal to the number of the plurality of light emitting elements 330 quantity. The plurality of engaging portions 386 are set corresponding to the plurality of openings 318, and the number of the plurality of engaging portions 386 is equal to the number of the plurality of openings 318, and the plurality of engaging portions 386 are engaged in the plurality of openings. The holes 318 allow the optical element 380 to be combined with the metal-based circuit board 310 . In this embodiment, four engaging portions 386 are used as an example.

The seat body 340 is integrally molded by injection molding with a polymer material with high thermal conductivity, which has the advantages of light weight, simple manufacture and good insulation effect, and a plurality of heat-conducting particles 341 are added in the polymer material. The base body 340 covers the plurality of extensions 314, the power drive unit 330 and the optical element 380, so as to enhance the bonding force between the metal base circuit board 310, the optical element 380 and the base body 340, and avoid the external force Squeeze and fall off. A first side 342 of the base body 340 is roughly cup-shaped and has a surrounding wall 3420 . An outer wall of the surrounding wall 3420 has a plurality of cooling fins 3424 , and the plurality of cooling fins 3424 can effectively lift the base body 340 . cooling effect. The metal-based circuit board 310 is disposed on the first side 342 , and the extension portion 314 is embedded in the base body 340 . The optical element 380 is disposed on the first side 342 and covers the light emitting elements 32 . A second side 344 of the seat body 340 is opposite to the first side 342 and connected to the first side 342 and is generally tubular in shape. A plurality of conductive pins 350 pass through the bottom edge of the second side 344 and are connected to the circuit board. 332 to form an electrical connection with the circuit substrate 332; in this embodiment, the plurality of conductive pins 350 are pins corresponding to MR16 light bulbs.

The process of actually manufacturing the light-emitting device 30 is described in detail as follows: First, a plurality of spaced slots 315 are formed on the metal-based circuit board 310 through a stamping process, and the metal-based circuit board 310 is bent along the slots 315 so that A base portion 312 and a plurality of extension portions 314 are formed, and a plurality of through holes 316 and a plurality of openings 318 are formed in the base portion 312 . Next, a plurality of protrusions 3321 of a circuit substrate 332 of a power driving unit 330 pass through the plurality of through holes 316 to form an electrical connection with the metal-based circuit board 310 .

A plurality of light-emitting elements 32 are disposed on the base 312 and electrically connected to the metal-based circuit board 310; and the engaging portion 386 of an optical element 380 is correspondingly engaged with the plurality of openings 318, thereby fixing the Optical element 380 .

Afterwards, the combined metal-based circuit board 310 and the power drive unit 330 are embedded in the injection mold of the base body 340, so that the base body 340 directly covers the extension portion 314, The power drive unit 330 and part of the optical element 380 .

Refer to FIG. 15 , FIG. 16 and FIG. 17 , which are partial exploded views, partial assembled views and cross-sectional views of the light emitting device according to the fifth embodiment of the present invention. The light-emitting device 30a of this embodiment is roughly similar to the above-mentioned first embodiment, the difference lies in its conductive pin 350a, and the conductive pin 350a is the pin of the GU10 light bulb for plugging into GU5.3 or GX5.3 This part is just an example, but not limited to.

In summary, the circuit substrate of the power drive unit of the light emitting device of the present invention is directly electrically connected to the metal-based circuit board. In this way, the process can be effectively simplified and the production cost can be reduced; moreover, The seat body is made of plastic material mixed with heat-conducting particles, which can effectively conduct away the heat energy generated when lighting the light-emitting element, and has the advantages of easy processing, light weight, better flex resistance and good insulation and, by bending the metal-based circuit board and embedding the plurality of extensions of the metal-based circuit board into the seat body, the heat energy generated by the light-emitting element can be quickly conducted away, preventing the light-emitting element from being damaged due to Working in a high temperature environment will result in reduced brightness, shortened lifespan, wavelength drift, and even damage.

However, the above is only a preferred embodiment of the utility model, and should not limit the scope of the utility model implementation, that is, all equal changes and modifications made according to the patent scope of the utility model should still belong to the utility model The scope of patent coverage is intended to protect the category.

Claims (12)

1. A lighting device, characterized in that it comprises: at least one light emitting element; A light fixture, comprising: A plastic seat body has a first side and a second side opposite to the first side; A metal-based circuit board is arranged on the first side of the base body. The metal-based circuit board includes a base and a plurality of extending parts bent and formed from the periphery of the base and arranged at intervals. The base has a plurality of through holes. The extension part is embedded in the seat, and the light emitting element is arranged on the base; A power drive unit includes a circuit substrate, a first end of the circuit substrate has a plurality of protrusions, and the plurality of protrusions correspondingly pass through the plurality of through holes and form an electrical connection with the metal base circuit board. 2 . The light emitting device according to claim 1 , further comprising a diffusion element disposed on the first side of the base body and covering the light emitting element. 3 . 3 . The light emitting device according to claim 2 , wherein the diffusion element comprises a plurality of buckles, and the plurality of buckles are correspondingly engaged with a plurality of grooves on an inner wall of the base body. 4 . 4. The light emitting device according to claim 1, further comprising an optical lens disposed on the first side of the base and covering the light emitting element. 5. The light emitting device according to claim 4, wherein the optical lens has an optical axis, and the optical lens comprises: A body, including: A light incident part includes a bottom surface and a reflective surface, the bottom surface has a groove, the reflective surface is connected to the bottom surface and the distance between the reflective surface and the optical axis increases as the distance from the bottom surface gradually increases, the light emitting element is set in the groove; a first light exit portion connected to the reflective surface, the first light exit portion has a top surface, and the top surface gradually approaches the bottom surface as it gradually approaches the optical axis; and A second light emitting part is connected with the top surface and located above the groove. 6. The light-emitting device according to claim 5, wherein the top surface comprises a plurality of first light-emitting surfaces and second light-emitting surfaces arranged in a staggered manner, the second light-emitting surfaces are perpendicular to the bottom surface, and the first light-emitting surfaces Parallel to the bottom surface, the first light emitting portion is stepped. 7. The light emitting device according to claim 4, wherein the optical lens comprises a plurality of light incident portions and a light exit portion, the plurality of light incident portions are connected to the light exit portion and protrude toward a direction away from the light exit portion out, and each of the light incident parts has a concave cavity, and the light emitting element is arranged in the concave cavity. 8 . The light emitting device according to claim 7 , further comprising an engaging member, the engaging member has a plurality of tenons, and the plurality of tenons are engaged with a plurality of engaging grooves of the base body. 9. The light emitting device as claimed in claim 1, wherein the base body comprises a plurality of cooling fins formed on an outer wall surface. 10. The light-emitting device as claimed in claim 1, wherein the base comprises a plurality of heat-conducting particles with high thermal conductivity. 11. The light emitting device according to claim 1, wherein at least one surface of the circuit substrate is perpendicular to an upper surface of the base. 12. The light emitting device according to claim 1, wherein the lamp further comprises an optical element, the optical lens comprises a plurality of light incident parts and a light exit part, and the plurality of light incident parts are connected to the light exit part and face toward The light-emitting part protrudes in a direction away from the light-emitting part, and each light-incoming part has a recess, and the light-emitting element is arranged in the recess.

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