CN103423672A

CN103423672A - Large-angle LED (light emitting diode) bulb lamp

Info

Publication number: CN103423672A
Application number: CN2013103753018A
Authority: CN
Inventors: 李甫文
Original assignee: Leedarson Green Lighting Co Ltd
Current assignee: Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Priority date: 2013-08-26
Filing date: 2013-08-26
Publication date: 2013-12-04
Anticipated expiration: 2033-08-26
Also published as: CN103423672B

Abstract

The invention discloses a large-angle LED (light emitting diode) bulb lamp which comprises a lamp holder, a lamp bulb shell, a lamp post, a substrate and a plurality of LED light sources, wherein the lamp post is arranged in the middle of the top of the lamp holder; the lamp bulb shell covers the periphery of the lamp post; a light diffusion part is arranged on the top of the lamp post; the top surface of the light diffusion part is a plane and faces the top of the lamp bulb shell; the side surface of the light diffusion part faces the side wall and the bottom of the lamp bulb shell; the light diffusion part is made of a transparent or semi-transparent material; a light-transmittance scattering material is arranged on the light diffusion part; the LED light sources are arranged on the back of the substrate; the area of the substrate is smaller than that of the top surface of the light diffusion part; light emitted by the LED light sources on the back of the substrate irradiates toward the light diffusion part. The large-angle LED bulb lamp has the characteristics of large light distribution angle and good heat dissipation effect.

Description

The large-angle LED bulb lamp

Technical field

The present invention relates to the LED lighting field, particularly a kind of large-angle LED bulb lamp.

Background technology

In recent years, LED chip applies to the room lighting field as light source and is developed fast.People a kind ofly can overcome the difficult problem that the LED light distribution angle is little constantly exploring.Traditional LED ball bulb, its light distribution angle degree is generally less than 180 degree, due to the solid luminescence characteristic of LED light source, makes it be difficult to accomplish that wide-angle is luminous.In order to increase lighting angle, people attempt light source is arranged on the multiaspect column.For example Granted publication day is on October 31st, 2012, and the Chinese utility model patent that the patent No. is 201220060615.X has disclosed a kind of high light efficiency large-angle LED bulb.This high light efficiency large-angle LED bulb comprises the base shell, be positioned at these base shell bottom lamp holder, be installed on these base shell inside constant-current supply, be covered in these base shell top cover plate, be fixed in the diffuser that is cubical heat radiation column, accommodates these heat radiation columns and be connected with these base shell of these cover plate top, wherein, the bottom surface of these heat radiation column is installed on these cover plate, its lap all posts pcb board, on every pcb board, distributes and is welded with several LED chips.This big-angle LED lamp need to be welded on LED chip the heat radiation column.

Although this method can increase the brightness of this LED lamp side, need to weld a plurality of LED chips in each side of support, this just makes this LED lamp manufacturing process complexity, is not easy to assembling and produces.

Summary of the invention

In view of this, be necessary to provide a kind of simple in structure and large-angle LED bulb lamp that lighting angle is large.

A kind of large-angle LED bulb lamp, comprise lamp holder, bulb housing, lamppost, substrate and a plurality of LED light source, this lamppost is arranged on the middle part at the top of this lamp holder, this bulb housing is located at around this lamppost, the top of this lamppost is provided with an astigmatic section, the end face of this astigmatism section is plane and arranges towards the top of this bulb housing, the side of this astigmatism section arranges towards sidewall and the bottom of this bulb housing, this astigmatism section is made by transparent or semitransparent material, this astigmatism section is provided with the light transmission scattering material, described LED light source is arranged on this substrate back, the area of this substrate is less than the area of this astigmatism section end face, the light that LED light source on described substrate back sends irradiates towards this astigmatism section.

Compared with prior art, this large-angle LED bulb lamp arranges lamppost by the top at lamp holder, at the top of lamppost, astigmatic section is set, and at the end face of this astigmatism section, substrate is set, LED light source is arranged on this substrate back, and the area of this substrate is less than the cross-sectional area of this astigmatism section maximum, and the light that makes these LED light sources send irradiates towards this astigmatism section, to shine the inwall to this bulb housing after light scattering by this astigmatism section, thereby increase the lighting angle of whole lamp.Owing to not needing mounting bracket, and weld a plurality of LED light sources in the support side, thereby simplify the structure, this just makes this large-angle LED bulb lamp have advantages of simple in structure and lighting angle is large.

The accompanying drawing explanation

Fig. 1 is the three-dimensional exploded view of the large-angle LED bulb lamp of first embodiment of the invention.

Fig. 2 is the generalized section after the assembling of the bulb lamp of large-angle LED shown in Fig. 1.

Description of reference numerals:

100 large-angle LED bulb lamp 23 connecting portions

10 bulb housing 24 through holes

11 heat transfer part 30 substrates

20 lamppost 31 LED light sources

21 astigmatic section 40 lamp holders

22 accepting grooves

The specific embodiment

Below in conjunction with accompanying drawing and the specific embodiment, the present invention is described in further detail.

Fig. 1 is the three-dimensional exploded view of the large-angle LED bulb lamp 100 of first embodiment of the invention, this large-angle LED bulb lamp 100 comprises lamp holder 40, bulb housing 10, lamppost 20, substrate 30 and a plurality of LED light source 31, and this lamppost 20 is arranged on the middle part at the top of this lamp holder 30.This bulb housing 10 was the hemisphere cell-shell, and this bulb housing 10 is located at around this lamppost 20.

Please refer to Fig. 1 and Fig. 2, the top of this lamppost 20 is provided with astigmatic section 21, and this astigmatism section 21 is hemispherical dome structure, certainly, can be also other structures.The end face of this astigmatism section 21 is plane and arranges towards the top of this bulb housing 10, and this hemispheric side of astigmatism section 21 arranges towards sidewall and the bottom of this bulb housing 10.This astigmatism section 21 is made by transparent or semitransparent material, and the outer surface of this astigmatism section 21 is coated with the light transmission scattering material, certainly, also can adopt other modes that this light transmission scattering material is set.This lamppost 20 also comprises connecting portion 23, and this connecting portion 23 is one-body molded in the bottom of this lamppost 20, and this connecting portion 23 is arranged on the top of this lamp holder 30.This connecting portion 23 is the Rotary-table structure.This lamppost 20 is made into integration by high thermal conductivity materials.The bottom opening of this bulb housing 10 is provided with heat transfer part 11 to connecting portion 23 that should lamppost 20, and this heat transfer part 11 is thermally coupled with this connecting portion 23.The heat transfer part 11 of this bulb housing 10, for to being set to the truncated cone-shaped shell structure by connecting portion 23, is provided with heat transfer glue between this heat transfer part 11 and this connecting portion 23.The outer surface of this connecting portion 23 is provided with the reflector layer (not shown).

Please refer to Fig. 1 and Fig. 2, this substrate 30 is the annulus laminated structure, by transparent or semitransparent material highly heat-conductive material, is made.The part of these LED light sources 31 is arranged on the front of this substrate 30, and another part is arranged on the back side (as shown in Figure 2) of this substrate 30.This substrate 30 is arranged on the middle part of these astigmatism section 21 end faces, and the area of this substrate 30 is less than the cross-sectional area of these astigmatism section 31 maximums, and these LED light sources 31 uniformly-spaced are arranged on the front and the back side of this substrate 30 each other.The top of this astigmatism section 21 is provided with accepting groove 22 for accommodating the LED light source 31 at these substrate 30 back sides.Be provided with transparent or semitransparent Heat Conduction Material between these LED light sources 31 and this accepting groove 22, this Heat Conduction Material is liquid.The back side of this substrate 30 is flattened on the end face of this astigmatism section 21, thermally coupled with the end face of this astigmatism section 21.The light that LED light source 31 on these substrate 30 back sides sends irradiates towards this astigmatism section.This substrate 30 is provided with the line layer (not shown), and this line layer is electrically connected to these LED light sources 31.The middle part of this lamppost 20 is provided with through hole 24, and this line layer is electrically connected to the driving (not shown) in being arranged on this lamp holder 30 by this through hole 24.

During work, because these LED light sources 31 are arranged on the front and back of this substrate 30, and the end face of the back side of this substrate 30 and this astigmatism section 21 is thermally coupled, so the light that the LED light source 31 in these substrate 30 fronts sends irradiates towards the top of this bulb housing 10.Because this astigmatism section 21 is provided with the light transmission scattering material, and the area of this substrate 30 is less than the area of these astigmatism section 21 end faces, therefore, the light that the LED light source 31 at these substrate 30 back sides sends will illuminate this astigmatism section 21, this astigmatism section 21 will, towards all inwall scattered beams of this bulb housing 10, make this large-angle LED bulb lamp 100 can realize the wide-angle illumination like this.The effect that wherein is arranged on positive LED light source 31 is to make up the light sheltered from by this substrate 30.Aspect heat radiation, the heat that these LED light sources 31 in this astigmatism section 21 distribute is delivered to this astigmatism section 21 by this substrate 30, then is delivered to the heat transfer part 11 on this bulb housing 10 by the connecting portion 23 of these lamppost 20 bottoms.Because this lamppost 20 is made by high thermal conductivity materials, and be provided with heat transfer glue between this heat transfer part 11 and this connecting portion 23, so heat can be successfully be delivered to this bulb housing 10 and be dispersed in air from this lamppost 20.

In sum, this large-angle LED bulb lamp 100 arranges lamppost 20 by the top at this lamp holder 40, astigmatic section 21 is set at the top of this lamppost 20, and at the end face of this astigmatism section 21, substrate 30 is set, a plurality of LED light sources 31 are set at the back side of this substrate 30, because the area of this substrate 30 is less than the cross-sectional area of these astigmatism section 21 maximums, this astigmatism section 21 is provided with the light transmission scattering material, therefore the light that makes these LED light sources 31 send will irradiate towards this astigmatism section 21, inwall to this bulb housing 10 will be shone by this astigmatism section 21 after light scattering, thereby increase the lighting angle of whole lamp.Should be noted that, if the area of this substrate 30 is greater than the cross-sectional area of these astigmatism section 21 maximums, so, the light that this astigmatism section 21 sends to these bulb housing 10 tops will be blocked by this substrate 30, and the light distribution of the light that the LED light source 31 in these substrate 30 fronts sends can not surpass 180 degree, this will be in generation dark space, the middle part of this bulb housing 10.So even for luminous intensity distribution, the cross-sectional area that the area of this substrate 30 is less than these astigmatism section 21 maximums is necessary.In addition, aspect heat radiation, this large-angle LED bulb lamp 100 is by the lamppost 20 of being made by high thermal conductivity materials, in the bottom of this lamppost 20, connecting portion 23 is set, and at the bottom opening of this bulb housing 10, connecting portion 23 that should lamppost 20 is arranged to heat transfer part 11, by heat transfer glue, make the heat transfer part 11 of this bulb housing 10 be connected with the connecting portion 23 of this lamppost 20, the heat that makes these LED light sources 31 on this lamppost 20 produce can be delivered to this bulb housing 10 by this lamppost 20, diffuse to space outerpace from this bulb housing 10 again, because this large-angle LED bulb lamp 100 has the profile the same with incandescent lamp, simple in structure, exempt the use of independent radiating piece, add that this large-angle LED bulb lamp 100 can realize that wide-angle is luminous, and the luminous embodiment of this wide-angle is without by welding a plurality of LED light sources in the support side, thereby it is simple to have technique, be convenient to the advantage of manufacturing.

Understandable, if this substrate 30 adopts transparent or semitransparent material to make, the light that the LED light source 31 at these substrate 30 back sides sends upwards can shine directly into the top of this bulb housing 10 by this substrate 30, in this case, the LED light source in these substrate 30 fronts can arrange.

Above these are only preferred embodiment of the present invention, and not in order to limit the present invention, any those skilled in the art, within not breaking away from this programme technical scope, can work as the technology contents that utilizes above-mentioned exposure and do a little change for the equal equivalent embodiment changed.In every case for breaking away from the technical solution of the present invention content, according to the technology of the present invention essence to any modification made for any of the above embodiments, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.

Claims

1. a large-angle LED bulb lamp, comprise lamp holder, bulb housing, lamppost, substrate and a plurality of LED light source, this lamppost is arranged on the middle part at the top of this lamp holder, this bulb housing is located at around this lamppost, it is characterized in that: the top of this lamppost is provided with an astigmatic section, the end face of this astigmatism section is plane and arranges towards the top of this bulb housing, the side of this astigmatism section arranges towards sidewall and the bottom of this bulb housing, this astigmatism section is made by transparent or semitransparent material, this astigmatism section is provided with the light transmission scattering material, described LED light source is arranged on this substrate back, the area of this substrate is less than the cross-sectional area of this astigmatism section maximum, the light that LED light source on described substrate back sends irradiates towards this astigmatism section.

2. large-angle LED bulb lamp according to claim 1, it is characterized in that: this substrate is the middle part that this substrate of annulus laminated structure is arranged on this astigmatism section end face, and described LED light source uniformly-spaced is arranged on this substrate.

3. large-angle LED bulb lamp according to claim 1, it is characterized in that: the top of this astigmatism section is provided with accepting groove for accommodating described LED light source.

4. large-angle LED bulb lamp according to claim 3, is characterized in that: between described LED light source and this accepting groove, be provided with transparent or semitransparent Heat Conduction Material.

5. large-angle LED bulb lamp according to claim 4, it is characterized in that: this Heat Conduction Material is liquid.

6. large-angle LED bulb lamp according to claim 1, it is characterized in that: this lamppost also comprises connecting portion, the one-body molded bottom at this lamppost of this connecting portion, this connecting portion is arranged on the top of this lamp holder, this lamppost is made this bulb housing bottom opening by high thermal conductivity materials is provided with heat transfer part to connecting portion that should lamppost, and this heat transfer part and this connecting portion are thermally coupled.

7. large-angle LED bulb lamp according to claim 6, it is characterized in that: the connecting portion of this lamppost is the Rotary-table structure, the top of this connecting portion is connected with this astigmatism section, the heat transfer part of this bulb housing is to truncated cone-shaped shell structure that should connecting portion, between this heat transfer part and this connecting portion, is provided with heat transfer glue.

8. large-angle LED bulb lamp according to claim 1, it is characterized in that: this substrate is that transparent or semitransparent material is made.

9. large-angle LED bulb lamp according to claim 1, is characterized in that: also be provided with LED light source on the front of this substrate.

10. large-angle LED bulb lamp according to claim 1, it is characterized in that: the end face of the back side of this substrate and this astigmatism section is thermally coupled.