CN202452202U - Light-emitting device and lampshade thereof - Google Patents

Abstract

The utility model provides a light-emitting device and lamp shade thereof, the lamp shade is used for collocating with a bulb, the lamp shade sets up the light-emitting side of bulb, the lamp shade contains a translucent cover body and a reflection part. The center of the inner surface of the light-transmitting cover body is provided with a connecting mechanism, the reflecting piece is connected with the connecting mechanism and is positioned on the bulb with a preset distance, and the reflecting piece is approximately conical and is provided with a plurality of openings; the bulb is characterized in that part of light emitted by the light emitting side of the bulb is transmitted to the light-transmitting cover body through the equal opening holes, and part of light is emitted out of the light-transmitting cover body after being reflected by the reflecting piece.

Description

Lighting device and its lampshade

technical field

The utility model relates to a light emitting device, in particular to a light emitting device which can effectively expand the light emitting angle.

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.

With reference to Fig. 1, it is a side view of an existing light-emitting diode bulb. The LED bulb 80 includes a base 82 , a light source module 84 , a lampshade 86 and a conductive connector 88 . A plurality of cooling fins 820 are arranged around the outer wall of the base body 82 to increase the cooling area.

The light source module 84 is disposed on one side of the base body 82 and includes a circuit board 840 and a plurality of light emitting diodes 842, and the light emitting diodes 842 are disposed on the circuit board 840 and electrically connected to the circuit board 840 . The lampshade 86 covers the light source module 84 such that the light source module 84 is located between the base body 82 and the lampshade 86 . The conductive joint 88 is connected to the side of the base body 82 opposite to the light source module 84, the conductive joint 88 is electrically connected to the light source module 84 and is plugged into one for providing lighting for the light source module 84. An external socket (not shown) for the power of the LED 842 .

However, the light emitting diodes 842 are directional light sources, so the light emitted by the light emitting diodes 842 can only emit light toward the front, and the corresponding light intensity distribution diagram is shown in FIG. Light distribution curve. It can be seen from FIG. 2 that the light-emitting diode bulb 80 cannot meet the light output requirements of non-directional light sources such as general incandescent bulbs, which makes users less willing to use the light-emitting diode bulb 80 .

Contents of the invention

In view of the prior art, an object of the present invention is to provide a lampshade, which is arranged on the light emitting side of a light bulb to expand the light emitting angle of the light emitted by the light bulb.

Another object of the present invention is to provide a light emitting device, which can provide a light emitting device with a large light emitting angle.

In order to achieve the above purpose, the utility model provides a lampshade, the lampshade is used in conjunction with a light bulb, the light emitting side of the light bulb is arranged on the lampshade, and the lampshade includes a light-transmitting cover body and a reflector. There is a connection mechanism at the center of an inner surface of the light-transmitting cover, the reflector is connected to the connection mechanism and is located on the bulb with a predetermined distance, the reflector is generally conical and its There are a plurality of openings; wherein, part of the light emitted by the light bulb from the light-emitting side is transmitted to the transparent cover through the plurality of openings, and part of the light is reflected by the reflector The light-transmitting cover is emitted.

In a preferred embodiment, an outer surface of the light-transmitting cover includes a light diffusion portion aligned with the connecting mechanism.

In a preferred embodiment, the reflector is conical.

In a preferred embodiment, the plurality of openings are arranged concentrically.

In a preferred embodiment, the transparent cover further includes a plurality of through holes arranged radially.

In a preferred embodiment, it further includes a plurality of convex ribs, and the plurality of convex ribs surround the light diffusion part and are arranged radially.

In a preferred embodiment, the open end of the light-transmitting cover further includes at least one flange portion, and the flange portion engages with at least one slot on the light-emitting side of the bulb.

In a preferred embodiment, the connection mechanism is a locking part, and the reflector is locked in the locking part.

In order to achieve another purpose of the present utility model, the utility model provides a light emitting device, the light emitting device includes a light source module and a lampshade, the light source module includes a base, a light emitting unit and a conductive joint, the base The body includes a first accommodating portion and a second accommodating portion opposite to the first accommodating portion, the light-emitting unit is arranged in the first accommodating portion, and the conductive joint is locked in the second accommodating portion Two storage parts. The lampshade covers the light source module so that the light source module is located between the base and the lampshade, the lampshade includes a transparent cover body and a reflector, an inner surface of the transparent cover body There is a connection mechanism at the center; the reflector is approximately cone-shaped and has a plurality of openings thereon, and the reflector is connected to the connection mechanism and is located on the light source module with a predetermined distance.

In a preferred embodiment, an outer surface of the light-transmitting cover includes a light diffusion portion aligned with the connecting mechanism.

In a preferred embodiment, the reflector is conical.

In a preferred embodiment, the plurality of openings are arranged concentrically.

In a preferred embodiment, the transparent cover further includes a plurality of through holes arranged radially.

In a preferred embodiment, it further includes a plurality of ribs arranged radially around the light diffusion portion.

In a preferred embodiment, it further includes a heat exchange mechanism that cooperates with the plurality of through holes to achieve forced convection, and the heat exchange mechanism is disposed in the second accommodating portion.

In a preferred embodiment, the light-emitting unit includes a circuit board and a plurality of light-emitting diodes, the circuit board includes a base and a plurality of bent parts formed by bending the base, and the plurality of light-emitting diodes are set on the base and electrically connected to the circuit board.

In a preferred embodiment, it further includes a reflective ring abutting against the circuit board and surrounding the plurality of LEDs.

In a preferred embodiment, it further includes:

A plurality of first fixing elements are fixed to a plurality of first fixing holes of the base through the reflective ring and the light emitting unit, and the first fixing holes are arranged in the first accommodating portion; and

A plurality of second fixing elements pass through the heat exchange mechanism and are fixedly connected to a plurality of second fixing holes of the base body, and the second fixing holes are arranged in the second accommodating portion.

In a preferred embodiment, the open end of the transparent cover further includes at least one flange, and the flange engages with at least one slot of the base.

In a preferred embodiment, the connection mechanism is a locking part, and the reflector is locked in the locking part.

In a preferred embodiment, the conductive joint further includes a plurality of holes cooperating with the heat exchange mechanism and the plurality of through holes to achieve forced convection.

The utility model can effectively enlarge the light emitting angle.

Description of drawings

Fig. 1 is the side view of existing LED light bulb;

Fig. 2 is the light intensity distribution diagram corresponding to the first figure;

Fig. 3 is a three-dimensional exploded view of the light emitting device of the first embodiment of the present invention;

Fig. 4 is a combination diagram of the light emitting device of the first embodiment of the present invention;

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

Fig. 6 is a light intensity distribution diagram of light passing through the light emitting device;

Fig. 7 is a partial exploded view of the light emitting device of the second embodiment of the present invention;

Fig. 8 is a partial enlarged view of the light emitting device of the second embodiment of the present invention;

Fig. 9 is a partial exploded view of the light emitting device of the third embodiment of the present invention;

Fig. 10 is a schematic diagram of the heat dissipation state of the light emitting device of the present invention;

Fig. 11 is a schematic diagram of another heat dissipation state of the light emitting device of the present invention;

Fig. 12 is a partial exploded view of the light emitting device of the fourth embodiment of the present invention;

Figure 13 is a schematic diagram of converting a PAR bulb into an A19 bulb.

Explanation of reference signs:

<Prior technology> 80-light-emitting diode bulb; 82-seat body; 820-heat sink; 84-light-emitting module; 840-circuit board; 842-light-emitting diode;

<This utility model> 1, 1a, 1b, 1c-light-emitting device; 10-light source module; 110-seat body; 112-

1120-first fixing hole; 1122-positioning column; 114-second receiving part; 1140-second fixing hole; 116-perforation; 118-radiating fin; 119, 324-card slot; 120 -light-emitting unit; 122-circuit board; 1220-base; 1222-bending part; 1224-slot; 124-light-emitting unit; 130-conductive joint; 138-hole; 140-reflection ring; 142-through hole; 150-heat exchange mechanism; 160-drive circuit board; 162-first fixed element; 164-second fixed element; 166-wire; 20c-lampshade; 210, 210a, 210b, 210c-light-transmitting cover; 2102-flange; 212, 212a-inner surface; 2120-engaging part; 214a-outer surface; -Protruding part; 216b, 216c-through hole; 218c-convex rib; 220-reflector; 222-opening hole; 32-bulb; Light distribution curve.

Detailed ways

Referring to FIG. 3 , FIG. 4 and FIG. 5 , they are respectively an exploded perspective view, an assembled 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 1 is described by taking an A19 light bulb as an example, but it is not limited to this in actual implementation. The lighting device 1 includes a light source module 10 and a lampshade 20 .

The light source module 10 includes a base 110 , a light emitting unit 120 , a conductive joint 130 , a reflective ring 140 and a heat exchange mechanism 150 . The seat body 110 has a first accommodating portion 112, a second accommodating portion 114 opposite to the first accommodating portion 112, and a through hole 116. The first accommodating portion 112 has a plurality of equidistant A first fixing hole 1120 and a positioning column 1122 are provided, the second accommodating portion 114 has a plurality of second fixing holes 1140 arranged at equal intervals, and the through hole 116 runs through the first accommodating portion 112 and the second accommodating portion 112 accommodating portion 114 . An outer surface of the base body 110 has a plurality of cooling fins 118 , and preferably, the cooling fins 118 are integrally formed with the base body 110 . The heat sinks 118 are mainly used to increase the heat dissipation area, so as to quickly conduct away the heat energy generated when the light emitting unit 120 is turned on. The base body 110 further includes a plurality of slots 119 located on the top edge of the base body 110 and surrounding the heat sinks 118 .

The light emitting unit 120 is disposed in the first accommodating portion 112 , and the light emitting unit 120 includes a circuit board 122 and a plurality of light emitting diodes (LEDs) 124 . The circuit board 122 can be a printed circuit board (printed circuit board, PCB), a metal base circuit board (metal core PCB) or a ceramic circuit board (ceramic PCB) or a composite material circuit board (composite material PCB), and it is preset There are multiple circuit traces (not shown) and pads (not shown), of course, those skilled in the art can use other suitable circuit boards. The circuit board 122 includes a base 1220, a plurality of bent portions 1222 formed by bending the base 1220, and a plurality of slots 1224; in this embodiment, the bent portions 1222 are substantially perpendicular to the base 1220, it is not limited to this in actual implementation. The circuit board 122 is disposed in the first accommodating portion 112 and the slots 1224 are aligned with the positioning posts 1122 , so that the circuit board 122 can be prevented from being displaced due to force.

The LEDs 124 are disposed on the base 1220 of the circuit board 122 and electrically connected to the circuit board 122 . In this embodiment, the light-emitting unit 120 is illustrated as including seven light-emitting diodes 124, and one of the light-emitting diodes 124 is arranged at the center of the circuit board 122, and the other six light-emitting diodes 124 surround the above-mentioned light-emitting diodes. The diodes 124 are arranged equidistantly, so that the light uniformity of the light-emitting unit 120 can be improved to avoid the occurrence of light spots; however, it should be noted that this number is only an example and is not a limitation of the patent scope of the present invention.

The conductive connector 130 is disposed on the side opposite to the light emitting unit 120 on the base body 110, and the conductive connector 130 is plugged into an external socket (not shown) to obtain the lighting of the light emitting unit. The power required by the unit 120. In this embodiment, the conductive connector 130 is the conductive connector 130 corresponding to the A19 light bulb. In actual implementation, the corresponding conductive connector 130 can be selected according to the type of the light emitting device 1 . The conductive joint 130 includes an accommodating slot 132 , a plurality of buckles 134 and a protection slot 136 , and the accommodating slot 132 is used for accommodating a driving circuit board 160 . The drive circuit board 160 can be, for example, a conversion circuit with AC-DC conversion or step-up/down-voltage function, which is used to convert the AC power obtained from the external socket into DC power or high and low voltage power conversion, and provide an appropriate voltage to the light emitting unit 120.

The buckles 134 are locked in a plurality of slots (not shown) of the second receiving portion 114 of the base body 110 to combine the conductive connector 130 and the base body 110 .

The reflective ring 140 abuts against the base 1220 of the circuit board 122 and surrounds the LEDs 124 for reflecting the light emitted by the LEDs 124 so as to improve light usage efficiency. The reflection ring 140 further includes a plurality of through holes 142, and a plurality of first fixing elements 162 pass through the equal through holes 142 and the base 1220 of the circuit board 122 and are fixed to the first fixing holes 1120. .

The heat exchange mechanism 150 is disposed on the second accommodating portion 114 of the seat body 110 , and a plurality of second fixing elements 164 are fixed to the second fixing holes 1140 through the heat exchange mechanism 150 , To lock the heat exchange mechanism 150 to the base body 110 . The heat exchange mechanism 150 is mainly used for accelerating the conduction of heat energy generated when the light emitting unit 120 is turned on. The heat exchange mechanism 150 can be a fan, a heat pipe, a vapor chamber, a heat sink or other elements with a heat exchange function, of course, the heat exchange mechanism 150 can also be a combination of the above elements; in the following, for convenience Note that the fan 150 is used as an example, but it should be noted that this is not a limitation of the present invention.

The light source module 10 further includes a plurality of wires 166 (as shown in FIG. 5 ), and the wires 166 are electrically connected to the light emitting unit 120 and the driving circuit board 160 through the protection slot 136 and the through hole 116, In this way, it is possible to prevent the heat exchange mechanism 150 from damaging the conductive wires 166 , thereby causing the light emitting device 1 to fail to operate.

The lampshade 20 covers the light-emitting unit 120 so that the light-emitting unit 120 is located between the base 110 and the lampshade 20 , and the lampshade 20 includes a transparent cover 210 and a reflector 220 . The light-transmitting cover body 210 can be transparent, translucent or foggy depending on the light transmittance. The open end of the transparent cover 210 has a plurality of flanges 2102, and the flanges 2102 are used to engage the clamping grooves 119 of the seat 110 to prevent the transparent cover 210 from It falls off due to external force extrusion. The light-transmitting cover 210 further includes an inner surface 212, and a connecting mechanism 2120 is provided at the center of the inner surface 212, and the connecting mechanism 2120 can be, for example, a snap-fitting piece, a buckle or other elements with a connecting function. , in the following, for convenience of description, the engaging portion 2120 is used as an illustration example, but it should be noted that this is not a limitation of the present invention.

The reflector 220 is locked in the engaging portion 2120 so that the reflector 220 is located above the light emitting unit 120 with a predetermined distance. The reflector 220 is approximately tapered and has a plurality of openings on it Hole 222. The reflector 220 may be in the shape of a cone or a polygonal cone. In this embodiment, the reflector 220 is illustrated as a cone, and the equal openings 222 are arranged concentrically; however, it should be noted that The arrangement is only an embodiment, and is not a limitation of the patent scope of the utility model. The reflector 220 can be made of metal material or plastic material, and is preferably white or silver with a better reflection effect. In actual implementation, the reflector can be adjusted according to actual needs or restrictions. 220 colors.

Part of the light emitted by the light-emitting unit 120 is transmitted to the transparent cover 210 through the equal opening 222, and exits to the outside through the transparent cover 210 (as shown by the dotted line in FIG. 5 ). , part of the light is emitted through the transparent cover 210 after being reflected by the reflector 220 (as shown by the chain line in Figure 5), and other part of the light is directly emitted through the transparent cover 210 (not shown in the figure) ). A schematic diagram of the light intensity distribution of the light emitted by the light emitting unit 120 after passing through the lampshade 20 is shown in FIG. 6 , wherein the light emitting unit 120 of the light emitting device 1 shown in FIG. The light is emitted in the direction of 0 degree, and L' shown in FIG. 6 represents the light distribution curve of the light emitting device 1 . The distribution angle of the light emitted by the light emitting device 1 generally covers 0 to plus 165 degrees and 0 to minus 165 degrees, which is similar to the lighting effect of a general incandescent lamp.

Referring to FIG. 7 and FIG. 8 together, it is a partial exploded view and a partial enlarged view of the light emitting device according to the second embodiment of the present invention. The light emitting device 1 a of this embodiment is similar to the light emitting device 1 of the first embodiment, and the same components are marked with the same symbols. It should be noted that the difference between the two lies in: the light-transmitting cover body 210a of the lamp cover 20a shown in FIG. 7 . The light-transmitting cover body 210a has an inner surface 212a and an outer surface 214a, the center of the inner surface 212a has an engaging portion 2120a, and the center of the outer surface 214a has a light diffusion portion 2140a. In the embodiment, the light diffusion part 2140a is composed of a plurality of protruding parts 2142a, but it is not limited to this in actual implementation. The light diffusing part 2140a can diffuse the light passing through the equal openings 222, so as to improve the light uniformity of the light emitting device 1a and obtain a more ideal light spot effect.

Referring to FIG. 9 , it is a partial exploded view of the light emitting device according to the third embodiment of the present invention. The light emitting device 1b of this embodiment is similar to the light emitting device 1 of the first embodiment, and the same components are marked with the same symbols. It should be noted that the difference between the two lies in that the light-transmitting cover body 210b of the lamp cover 20b shown in FIG. 9 further includes a plurality of through holes 216b arranged radially. The through holes 216b cooperate with the fan 150 to force air to generate convection, thereby increasing the heat dissipation effect, as shown in FIG. 10 and FIG. 11 . The actual operation method is as follows according to the different installation places of the light emitting device 1b: 1. When the light emitting device 1b is installed in an open space, the fan 150 is sucked by the plurality of holes 138 of the conductive connector 130 , and the hot air is discharged from the through holes 216b (as shown in FIG. 10 ), so as to guide away the heat energy generated when the light emitting unit 120 is turned on at an accelerated rate. 2. When the light-emitting device 1b is installed in a relatively confined space and the fan 150 cannot suck the wind through the holes 138 of the conductive connector 130, it will suck the wind through part of the holes 216b And the hot air is exhausted through other through holes 216b (as shown in FIG. 11 ), so as to accelerate away the heat energy generated when the light emitting unit 120 is lit. Of course, the fan 150 can also be replaced by other elements with heat exchange function, and cooperate with the through holes 216b to achieve forced convection.

Referring to FIG. 12 , it is a partial exploded view of the light emitting device according to the fourth embodiment of the present invention. The light emitting device 1c of this embodiment is similar to the light emitting device 1 of the first embodiment, and the same components are marked with the same symbols. It should be noted that the difference between the two lies in: the light-transmitting cover body 210c of the lamp cover 20c shown in FIG. 10 . The transparent cover 210c includes a light diffusion portion 2140c, a plurality of ribs 218c and a plurality of through holes 216c surrounding the light diffusion portion 2140c and arranged radially. The light diffusing part 2140c diffuses the light passing through the equal openings 222 to improve the light uniformity of the light emitting device 1c and obtain a more ideal light spot effect. The through hole 216c cooperates with the fan 150 to achieve forced convection, so as to accelerate the heat energy generated when the light emitting unit 120 is turned on. The detailed description is the same as that of the light emitting device 1b in the third embodiment above, and will not be described here. I will repeat.

In practice, the lampshade 20 can be connected to a light bulb 32 , as shown in FIG. 13 . Herein, the light bulb is described with a PAR light bulb as an example. The light bulb 32 further includes a light-transmitting mirror 34 and a fixing member 36, and the fixing member 36 is used to fix the light-transmitting mirror 36 to the light-emitting side 322 of the light bulb 32. A fastener 362 is locked in a plurality of slots 324 of the light source module 32 .

When assembling the lampshade 20, the fixing member 36 and the light-transmitting mirror 34 need to be removed, and the plurality of flanges 2102 of the lampshade 20 are aligned and locked in the locking grooves 324, That is, the bulb 32 can be converted into an A19 bulb. Certainly, the lampshade 20 may also be the above-mentioned lampshades 20a, 20b, 20c. Furthermore, the inside of the light bulb 32 may include a fan (not shown in the figure), which cooperates with the lampshades 20b, 20c to achieve forced convection, so as to expedite the conduction of the heat energy generated when the light bulb 32 is turned on.

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 scope of the utility model patent application should still belong to the utility model. A new type of patent covers the category it is intended to protect.

Claims (21)

1. a lampshade is characterized in that, in order to use with bulb collocation, said lampshade is provided with a bright dipping side of said bulb, and said lampshade comprises:

One printing opacity cover body, the said bright dipping side that cover closes said bulb, the centre of the inner surface of said printing opacity cover body has a bindiny mechanism, and

One reflecting element is connected in said bindiny mechanism and has a preset distance ground and is positioned on the said bulb, and said reflecting element is on taper and its and has a plurality of perforates;

Wherein, the part light that is sent by the said bright dipping side of said bulb is to wait perforate to be passed to said printing opacity cover body through said, and part light is by the outgoing of said printing opacity cover body via said reflecting element reflection back.

2. lampshade according to claim 1 is characterized in that, an outer surface of said printing opacity cover body comprises a smooth diffusion part, is aligned in said bindiny mechanism.

3. lampshade according to claim 1 is characterized in that said reflecting element is coniform.

4. lampshade according to claim 3 is characterized in that, said a plurality of perforates are concentric circles and arrange.

5. lampshade according to claim 1 is characterized in that, said printing opacity cover body more comprises a plurality of open-works that are radial arrangement.

6. lampshade according to claim 2 is characterized in that, more comprises a plurality of fins, and said a plurality of fins are surrounded on said smooth diffusion part and are radial arrangement.

7. lampshade according to claim 1 is characterized in that the openend of said printing opacity cover body more comprises at least one flange part, and said flange part is sticked at least one draw-in groove of the said bright dipping side of said bulb.

8. lampshade according to claim 1 is characterized in that, said bindiny mechanism is the holding section, and said reflecting element clip is in said holding section.

9. a light-emitting device is characterized in that, comprises:

One light source module comprises:

One pedestal comprises one first holding part and second holding part in contrast to said first holding part;

One luminescence unit is arranged at said first holding part;

One conductive contact, clip is in said second holding part;

One lampshade, cover closes said light source module makes said light source module between said pedestal and said lampshade, and said lampshade comprises:

One printing opacity cover body, the centre of an inner surface of said printing opacity cover body has a connect mechanism; And

One reflecting element is on taper and its and has a plurality of perforates, and said reflecting element is connected in said bindiny mechanism and has a preset distance ground and is positioned on the said light source module.

10. light-emitting device according to claim 9 is characterized in that, an outer surface of said printing opacity cover body comprises a smooth diffusion part, is aligned in said bindiny mechanism.

11. light-emitting device according to claim 9 is characterized in that, said reflecting element is coniform.

12. light-emitting device according to claim 11 is characterized in that, said a plurality of perforates are concentric circles and arrange.

13. light-emitting device according to claim 9 is characterized in that, the printing opacity cover body more comprises a plurality of open-works that are radial arrangement.

14. light-emitting device according to claim 10 is characterized in that, more comprises a plurality of fins, said a plurality of fins are around said smooth diffusion part and be radial arrangement.

15. light-emitting device according to claim 13 is characterized in that, more comprises one and cooperates the heat exchange mechanism of reaching forced convertion with said a plurality of open-works, said heat exchange mechanism is arranged at said second holding part.

16. light-emitting device according to claim 15; It is characterized in that; Said luminescence unit comprises a circuit board and a plurality of light emitting diode; Said circuit board comprises a base portion and a plurality of kink by said base portion bending and forming, and said a plurality of light emitting diodes are arranged at said base portion and are electrically connected on said circuit board.

17. light-emitting device according to claim 16 is characterized in that, more comprises a tore of reflection, is connected to said circuit board and around said a plurality of light emitting diodes.

18. light-emitting device according to claim 17 is characterized in that, more comprises:

A plurality of first retaining elements are fixed in a plurality of first fixing holes of said pedestal through said tore of reflection, said luminescence unit, and said first fixing hole such as grade is arranged at said first holding part; And

A plurality of second retaining elements, through said heat exchange mechanism and be fixed in a plurality of second fixing holes of said pedestal, said second fixing hole is arranged at said second holding part.

19. light-emitting device according to claim 9 is characterized in that, the openend of said printing opacity cover body more comprises at least one flange part, and said flange part is sticked at least one draw-in groove of said pedestal.

20. light-emitting device according to claim 9 is characterized in that, said bindiny mechanism is the holding section, and said reflecting element clip is in said holding section.

21. light-emitting device according to claim 15 is characterized in that, said conductive contact more comprises a plurality of and said heat exchange mechanism, said a plurality of open-works cooperate the hole of reaching forced convertion.

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