CN103423672B - Large-angle LED bulb lamp - Google Patents

Abstract

The utility model provides a wide-angle LED ball bubble lamp, includes the lamp holder, the bulb shell, the lamp pole, base plate and a plurality of LED light source, this lamp pole setting is at the middle part at the top of this lamp holder, and this bulb shell cover is established around this lamp pole, and the top of this lamp pole is equipped with a light scattering portion, and the top surface of this light scattering portion sets up for the plane and towards the top of this bulb shell, and the side of this light scattering portion sets up towards the lateral wall and the bottom of this bulb shell, and this light scattering portion is made by transparent or translucent material, is equipped with light on this light scattering portion and sees through the scattering material, the LED light source sets up on this base plate back, and the area of this base plate is less than the area of this light scattering portion top surface, the light that the LED light source on the base plate back. The large-angle LED bulb lamp has the characteristics of large light distribution angle and good heat dissipation effect.

Description

Large Angle LED Bulb Light

technical field

The invention relates to the field of LED lighting, in particular to a large-angle LED bulb lamp.

Background technique

In recent years, the application of LED chips as light sources in the field of indoor lighting has developed rapidly. People are constantly exploring a way to overcome the problem of small LED light distribution angles. The light distribution angle of traditional LED bulbs is generally less than 180 degrees. Due to the solid light-emitting characteristics of LED light sources, it is difficult to emit light at large angles. In order to increase the luminous angle, people try to arrange the light source on the multi-faceted column. For example, the date of authorization announcement is October 31, 2012, and the Chinese utility model patent with the patent number 201220060615.X discloses a high-efficiency and large-angle LED bulb. The high-efficiency large-angle LED light bulb includes a base shell, a lamp cap located at the bottom of these base shells, a constant current power supply installed inside these base shells, a cover plate covering the top of these base shells, and fixed above these cover plates The cube-shaped heat dissipation columns, the light-transmitting covers that accommodate these heat dissipation columns and are connected to these base shells, wherein, the bottom surfaces of these heat dissipation columns are installed on these cover plates, and the remaining surfaces are pasted with PCB boards. Each PCB Several LED chips are distributed and welded on the board. The large-angle LED lamp needs to weld the LED chip to the heat dissipation column.

Although this method can increase the brightness of the side of the LED lamp, multiple LED chips need to be welded on each side of the bracket, which makes the manufacturing process of the LED lamp complicated and inconvenient for assembly and production.

Contents of the invention

In view of this, it is necessary to provide a large-angle LED bulb lamp with a simple structure and a large light-emitting angle.

A large-angle LED bulb lamp includes a lamp base, a bulb shell, a lamp post, a substrate and a plurality of LED light sources. The top of the column is provided with an astigmatism part, the top surface of the astigmatism part is plane and is set towards the top of the bulb housing, the side of the astigmatism part is set towards the side wall and the bottom of the bulb housing, and the astigmatism part is made of transparent or translucent material, the astigmatism part is provided with a light-transmitting scattering material, the LED light source is arranged on the back of the substrate, the area of the substrate is smaller than the area of the top surface of the astigmatism part, and the LED light source on the back of the substrate emits The light is irradiated toward the light scattering part, and the light scattering part is used for refracting the light emitted by the LED light source toward the top, the side wall and the bottom of the bulb shell.

Compared with the prior art, the large-angle LED bulb lamp is provided with a lamppost on the top of the lamp cap, a light-scattering part is arranged on the top of the lamppost, and a substrate is arranged on the top surface of the light-scattering part, and the LED light source is arranged on the back of the substrate On the other hand, the area of the substrate is smaller than the largest cross-sectional area of the light-scattering part, so that the light emitted by these LED light sources is irradiated toward the light-scattering part, and the light is scattered by the light-scattering part and illuminates the inner wall of the bulb shell, thereby increasing the overall size of the lamp. the lighting angle. Since there is no need to install a bracket, and a plurality of LED light sources are welded on the side of the bracket, the structure is simplified, which makes the large-angle LED bulb lamp have the advantages of simple structure and large lighting angle.

Description of drawings

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

Fig. 2 is a schematic cross-sectional view of the assembled large-angle LED bulb shown in Fig. 1 .

Explanation of reference signs:

100 Large-angle LED bulb lamp 23 Connecting part

10 Bulb housing 24 Through hole

11 Heat transfer section 30 Base plate

20 lamp post 31 LED light source

21 Astigmatism part 40 Lamp head

22 storage tanks

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a three-dimensional exploded view of a large-angle LED bulb lamp 100 according to the first embodiment of the present invention. The large-angle LED bulb lamp 100 includes a lamp base 40, a bulb shell 10, a lamp column 20, a substrate 30 and a plurality of LED light sources 31 , the lamp post 20 is arranged in the middle of the top of the lamp holder 40 . The bulb shell 10 is a semi-spherical bulb shell, and the bulb shell 10 is arranged around the lamp post 20 .

Please refer to FIG. 1 and FIG. 2 , the top of the lamp post 20 is provided with a diffuser 21 , and the diffuser 21 has a hemispherical structure, of course, other structures can also be used. The top surface of the diffusing portion 21 is flat and disposed toward the top of the bulb housing 10 , and the hemispherical side of the diffusing portion 21 is disposed facing the sidewall and bottom of the bulb housing 10 . The light scattering part 21 is made of transparent or translucent material, and the outer surface of the light scattering part 21 is coated with a light-transmitting scattering material. Of course, the light-transmitting scattering material can also be arranged in other ways. The light scattering part 21 is used for refracting the light emitted by the LED light source 31 towards the top, the side wall and the bottom of the bulb housing 10 . The lamp post 20 further includes a connecting portion 23 integrally formed on the bottom of the lamp post 20 , and the connecting portion 23 is disposed on the top of the lamp holder 30 . The connecting portion 23 is a circular frustum structure. The lamp post 20 is integrally made of high thermal conductivity material. The bottom opening of the light bulb housing 10 corresponds to the connecting portion 23 of the lamp post 20 to be provided with a heat transfer portion 11 , and the heat transfer portion 11 is thermally connected to the connecting portion 23 . The heat transfer portion 11 of the light bulb housing 10 is configured as a truncated conical shell structure corresponding to the connection portion 23, and heat transfer glue is arranged between the heat transfer portion 11 and the connection portion 23. The outer surface of the connecting portion 23 is provided with a reflective layer (not shown).

Please refer to FIG. 1 and FIG. 2 , the substrate 30 is an annular sheet structure made of transparent or translucent material with high thermal conductivity. A part of these LED light sources 31 is arranged on the front of the substrate 30 , and another part is arranged on the back of the substrate 30 (as shown in FIG. 2 ). The substrate 30 is disposed in the middle of the top surface of the diffuser 21 , the area of the substrate 30 is smaller than the largest cross-sectional area of the diffuser 31 , and the LED light sources 31 are arranged on the front and back of the substrate 30 at regular intervals. The top of the diffuser 21 is provided with a receiving groove 22 for receiving the LED light source 31 on the back of the substrate 30 . A transparent or translucent heat-conducting material is disposed between the LED light sources 31 and the receiving groove 22 , and the heat-conducting material is liquid. The back surface of the substrate 30 is flatly attached to the top surface of the light-diffusing portion 21 and is thermally connected to the top surface of the light-diffusing portion 21 . The light emitted by the LED light source 31 on the back surface of the substrate 30 is irradiated toward the diffuser. A circuit layer (not shown) is provided on the substrate 30 , and the circuit layer is electrically connected to the LED light sources 31 . The middle part of the lamp post 20 is provided with a through hole 24, and the circuit layer is electrically connected with the driver (not shown) arranged in the lamp holder 30 through the through hole 24.

During operation, since these LED light sources 31 are arranged on the front and back of the substrate 30, and the back of the substrate 30 is thermally connected to the top surface of the diffuser 21, the light emitted by the LED light sources 31 on the front of the substrate 30 is directed toward the light bulb. The top of the shell 10 is illuminated. Since the diffuser 21 is provided with a light-transmitting scattering material, and the area of the substrate 30 is smaller than the area of the top surface of the diffuser 21, the light emitted by the LED light source 31 on the back of the substrate 30 will illuminate the diffuser 21. , the light diffusing part 21 will scatter light towards all the inner walls of the bulb housing 10, so that the large-angle LED bulb lamp 100 can realize large-angle illumination. The function of the LED light source 31 arranged on the front side is to make up for the light blocked by the substrate 30 . In terms of heat dissipation, the heat dissipated by the LED light sources 31 on the diffuser 21 is transferred to the diffuser 21 through the substrate 30 , and then transferred to the heat transfer portion on the bulb housing 10 through the connecting portion 23 at the bottom of the lamp post 20 11. Since the lamp post 20 is made of a material with high thermal conductivity, and heat transfer glue is provided between the heat transfer part 11 and the connecting part 23, heat can be smoothly transferred from the lamp post 20 to the light bulb housing 10. into the air.

To sum up, the large-angle LED bulb lamp 100 is provided with a lamp post 20 on the top of the lamp cap 40, a diffuser 21 is provided on the top of the lamp post 20, and a substrate 30 is provided on the top surface of the diffuser 21, A plurality of LED light sources 31 are arranged on the back side of the substrate 30. Since the area of the substrate 30 is smaller than the largest cross-sectional area of the light-scattering portion 21, the light-scattering portion 21 is provided with a light-transmitting scattering material, so that the light emitted by these LED light sources 31 The light will be irradiated towards the diffuser portion 21 , and the light will be scattered by the diffuser portion 21 to illuminate the inner wall of the bulb housing 10 , thereby increasing the light emitting angle of the whole lamp. It should be noted that if the area of the base plate 30 is larger than the maximum cross-sectional area of the light-diffusing portion 21, then the light emitted by the light-diffusing portion 21 to the top of the bulb housing 10 will be blocked by the base plate 30, while the front surface of the base plate 30 The light intensity distribution of the light emitted by the LED light source 31 cannot exceed 180 degrees, which will produce a dark area in the middle of the bulb housing 10 . Therefore, for uniform light distribution, it is necessary that the area of the substrate 30 is smaller than the largest cross-sectional area of the diffusing portion 21 . In addition, in terms of heat dissipation, the large-angle LED bulb lamp 100 passes through the lamp post 20 made of high thermal conductivity material, and the connecting part 23 is provided at the bottom of the lamp post 20, and the opening at the bottom of the bulb shell 10 corresponds to the The connection part 23 of the lamp post 20 is provided with a heat transfer part 11, and the heat transfer part 11 of the bulb housing 10 is connected to the connection part 23 of the lamp post 20 through heat transfer glue, so that the LED light sources 31 on the lamp post 20 The heat generated can be transferred to the bulb shell 10 through the lamp post 20, and then dissipated from the bulb shell 10 to the external space. Since the large-angle LED bulb lamp 100 has the same shape as an incandescent lamp, the structure is simple, and no separate heat dissipation is required. The use of parts, plus the large-angle LED bulb lamp 100 can realize large-angle light emission, and this embodiment of large-angle light emission does not need to weld multiple LED light sources on the side of the bracket, so it has the advantages of simple process and easy manufacture.

It can be understood that if the substrate 30 is made of a transparent or translucent material, the light emitted by the LED light source 31 on the back of the substrate 30 can pass through the substrate 30 and directly irradiate the top of the bulb housing 10 upwards. In this case , the LED light source on the front of the substrate 30 may not be provided.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Anyone skilled in the art may use the technical content disclosed above to make some changes as equivalent changes without departing from the technical scope of the solution. Example. However, in order to deviate from the content of the technical solution of the present invention, any modifications, equivalent replacements, improvements, etc. made to the above embodiments according to the technical essence of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A large-angle LED bulb lamp, comprising a lamp base, a bulb shell, a lamp post, a substrate and a plurality of LED light sources, the lamp post is arranged in the middle of the top of the lamp base, and the bulb cover is arranged around the lamp post, It is characterized in that: the top of the lamp post is provided with an astigmatism part, the top surface of the astigmatism part is plane and is set towards the top of the bulb housing, the side of the astigmatism part is set towards the side wall and bottom of the bulb housing, the astigmatism The part is made of transparent or translucent material, the light-scattering part is provided with a light-transmitting scattering material, the LED light source is arranged on the back of the substrate, the area of the substrate is smaller than the largest cross-sectional area of the light-scattering part, and the substrate The light emitted by the LED light source on the back is irradiated toward the diffuser, and the diffuser is used to refract the light emitted by the LED light source toward the top, side wall and bottom of the bulb shell. 2. The large-angle LED bulb lamp according to claim 1, characterized in that: the substrate is a circular sheet structure, the substrate is arranged in the middle of the top surface of the astigmatism part, and the LED light sources are arranged at equal intervals. on the substrate. 3 . The large-angle LED bulb lamp according to claim 1 , wherein a receiving groove is provided on the top of the light-diffusing part for receiving the LED light source. 4 . 4. The large-angle LED bulb lamp according to claim 3, wherein a transparent or translucent heat-conducting material is provided between the LED light source and the receiving tank. 5. The large-angle LED bulb lamp according to claim 4, wherein the heat conducting material is liquid. 6. The large-angle LED bulb lamp according to claim 1, characterized in that: the lamp post further includes a connecting part integrally formed at the bottom of the lamp post, the connecting part is arranged on the top of the lamp holder, The lamp post is made of high thermal conductivity material, and the bottom opening of the bulb shell is provided with a heat transfer part corresponding to the connection part of the lamp post, and the heat transfer part is thermally connected with the connection part. 7. The large-angle LED bulb lamp according to claim 6, characterized in that: the connection part of the lamp post is a circular frustum structure, the top of the connection part is connected with the light scattering part, and the heat transfer part of the bulb shell is Corresponding to the frustum-shaped housing structure of the connection part, heat transfer glue is provided between the heat transfer part and the connection part. 8. The large-angle LED bulb lamp according to claim 1, wherein the substrate is made of transparent or translucent material. 9. The large-angle LED bulb lamp according to claim 1, wherein an LED light source is also arranged on the front side of the substrate. 10. The large-angle LED bulb lamp according to claim 1, characterized in that: the back surface of the substrate is thermally connected to the top surface of the diffuser.