CN210398444U

CN210398444U - LED bulb

Info

Publication number: CN210398444U
Application number: CN201921813126.5U
Authority: CN
Inventors: 王鹏
Original assignee: Shenzhen Ruidiesen Photoelectric Co Ltd; Shenzhen Andysom Lighting Co Ltd
Current assignee: Shenzhen Ruidiesen Photoelectric Co Ltd; Shenzhen Andysom Lighting Co Ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-04-24
Anticipated expiration: 2029-10-25

Abstract

The utility model discloses a LED bulb, which comprises a lamp holder (1), a light-transmitting bulb shell (2), an insulating connecting piece (3), a driving circuit board (4), a heat radiation light source board (5) with LED and a light guide column (6), wherein two ends of the insulating connecting piece (3) are respectively connected with the lamp holder (1) and the light-transmitting bulb shell (2) to form a cavity for holding other elements, the input end and the output end of the driving circuit board (4) are respectively electrically connected with the lamp holder (1) and the LED to form a power supply circuit, the bottom of the light guide column (6) covers the heat radiation light source board (5) to conduct and emit the light of the LED through the light guide column (6) and outwards emit the light through the light-transmitting bulb shell (2), an annular reflecting area (62) is arranged at the bottom of the inner wall of the light guide column (6) to reflect the direct light of the LED on the inner wall of the light guide column (6) for a plurality of times, and then enter the light guide column (6) above the annular, avoid directly emitting from the light guide column (6) at the annular reflecting area (62). The utility model discloses but wide application in illumination field.

Description

LED bulb

Technical Field

The utility model relates to a LED bulb.

Background

The LED lamp is used as a substitute light source in modern life, office and other places, and has been widely used compared with the traditional incandescent lamp because of its advantages of energy saving, power saving, long service life and the like. However, because of the directivity of the light emitted by the LED itself, glare is likely to occur, which adversely affects the health and comfort of the human eyes. LED lamps that distribute light through a light guide element have appeared at present. However, in the existing LED light bulb with a light guide element, the light guide element is close to the LED and is prone to light leakage, which results in uneven light output and poor light output effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome prior art not enough, provide a simple structure, cost are lower, avoid the LED bulb of light leak.

The utility model adopts the technical proposal that: the utility model comprises a lamp holder, a transparent bulb shell, an insulating connecting piece, a driving circuit board, a heat radiation light source board with LED, and a light guide column, wherein both ends of the insulating connecting piece are respectively connected with the lamp holder and the transparent bulb shell, so as to form a cavity for accommodating other elements, the input end and the output end of the driving circuit board are respectively electrically connected with the lamp cap and the LED, so as to form a power supply circuit, the bottom of the light guide column covers the heat dissipation light source plate to conduct and radiate the light emitted by the LED through the light guide column, and is emitted out through the light-transmitting bulb shell, the bottom of the inner wall of the light guide column is provided with an annular reflecting area, the direct light of the LED is reflected on the inner wall of the light guide column for multiple times and then enters the light guide column above the annular reflection area to be conducted and diffused, so that direct emission from the light guide column at the annular reflection area is avoided.

The annular reflecting area is a reflecting coating.

The reflective coating is a silvered reflective coating.

Or the annular reflecting area is a frosted layer.

The side wall of the light guide column above the annular reflection area is provided with a plurality of grooves, the top of the light guide column is annular step-shaped, the lengths of the grooves are the same, and the grooves extend downwards from the top of the annular step-shaped.

The groove is a blind groove, and the opening of the groove is positioned on the outer wall of the light guide column.

Or, the groove is a blind groove, and the opening of the groove is positioned on the inner wall of the light guide column.

The groove is a through groove, and an opening of the groove penetrates through the outer wall and the inner wall of the light guide column.

The LED bulb further comprises a heat dissipation cover, and the top surface of the heat dissipation cover is in contact connection with the bottom surface of the heat dissipation light source plate to dissipate heat by conducting heat.

The driving circuit board can receive wireless control signals, and the side wall of the heat dissipation cover is provided with a wireless signal opening so as to receive the wireless control signals.

The output of drive circuit board is equipped with the contact pin, be equipped with female terminal on the heat dissipation light source board, the contact pin is insulating pass the heat exchanger that looses heat behind the heat dissipation light source board with female terminal is connected to carry out electric connection and structural connection simultaneously.

The utility model has the advantages that: because the utility model comprises a lamp holder, a transparent bulb shell, an insulating connecting piece, a driving circuit board, a heat radiation light source board with LED and a light guide column, the two ends of the insulating connecting piece are respectively connected with the lamp holder and the transparent bulb shell, so as to form a cavity for accommodating other elements, the input end and the output end of the driving circuit board are respectively electrically connected with the lamp cap and the LED, so as to form a power supply circuit, the bottom of the light guide column covers the heat dissipation light source plate to conduct and radiate the light emitted by the LED through the light guide column, and is emitted out through the light-transmitting bulb shell, the bottom of the inner wall of the light guide column is provided with an annular reflecting area, the direct light of the LED is reflected on the inner wall of the light guide column for multiple times and then enters the light guide column above the annular reflecting area to be conducted and diffused, so that the direct light is prevented from being directly emitted from the light guide column at the annular reflecting area; the utility model overcomes the defects of the prior art, the direct irradiation of the LED is enabled to emit light to be reflected for a plurality of times on the inner wall of the light guide column by arranging the annular reflection area at the bottom of the inner wall of the light guide column, and then the LED enters the upper part of the annular reflection area to be conducted and distributed in the light guide column, so as to avoid directly emitting from the annular reflection area in the light guide column, thereby avoiding the phenomenon of light leakage, leading the light to be uniform and having good light emitting effect; the event the utility model discloses simple structure, the cost is lower, avoids the light leak.

Drawings

Fig. 1 is a schematic view of the overall structure of an LED bulb according to an embodiment of the present invention;

fig. 2 is an explosion structure diagram of the LED bulb according to the embodiment of the present invention.

Detailed Description

As shown in fig. 1 and 2, the LED bulb of this embodiment includes a lamp holder 1, a transparent bulb casing 2, an insulating connector 3, a driving circuit board 4, a heat-dissipating light source board 5 with an LED, a light guiding pillar 6, and a heat-dissipating cover 7, wherein two ends of the insulating connector 3 are respectively connected to the lamp holder 1 and the transparent bulb casing 2 to form a cavity for accommodating other components, an input end and an output end of the driving circuit board 4 are respectively electrically connected to the lamp holder 1 and the LED to form a power supply circuit, the bottom of the light guiding pillar 6 covers the heat-dissipating light source board 5 to transmit and dissipate light emitted from the LED through the light guiding pillar 6 and emit the light outward through the transparent bulb casing 2, the bottom of the inner wall of the light guiding pillar 6 is provided with an annular reflection region 62 to reflect the direct light emitted from the LED on the inner wall of the light guiding pillar 6 for multiple times, and then enter the light guiding pillar 6 above the annular reflection region 62 to transmit and dissipate the light, in this embodiment, the annular reflection region 62 is a reflection coating, specifically, the reflection coating is a silver-plated reflection layer, and certainly, the reflection coating may also be a reflection layer coated with other reflection materials, and the annular reflection region 62 may also be a frosted layer, a plurality of grooves 60 are disposed on the sidewall of the light guide column 6 above the annular reflection region 62, the top of the light guide column 6 is in an annular step shape, the lengths of the grooves 60 are the same, and the grooves extend downward from the top of the annular step shape, so that the heights of the bottoms of the grooves 60 are also inconsistent, and the light range from the grooves 60 forms a staggered arrangement in the height direction, which is similar to a dynamic effect of fire, and has a better light emitting effect, in this embodiment, the grooves 60 are blind grooves, and the openings of the blind grooves are located on the outer wall of the light guide column 6, of course, the opening of the groove 60 can be located on the inner wall of the light guiding pillar 6, or the groove 60 is a through groove, the opening of the groove penetrates through the outer wall and the inner wall of the light guiding pillar 6, different light effects can be realized in different ways, the light effect is good, the top surface of the heat dissipation cover 7 is in contact connection with the bottom surface of the heat dissipation light source plate 5 to dissipate heat by conducting heat, so that the utility model has good heat dissipation effect, the similar LED bulb without the heat dissipation cover can only seat at a power of 1-3W due to poor heat dissipation effect, and the utility model can achieve 20-30W, the driving circuit board 4 can receive wireless control signals, the side wall of the heat dissipation cover 7 is provided with wireless signal openings 70 to receive wireless control signals, the output end of the driving circuit board 4 is provided with pins 40, the heat dissipation light source plate 5 is provided with female terminals 41, the contact pin 40 penetrates through the heat dissipation cover 7 and the heat dissipation light source board 5 in an insulating manner and then is connected with the female terminal 41, so that electrical connection and structural connection are performed simultaneously.

The utility model overcomes the defects of the prior art, the annular reflection area 62 is arranged at the bottom of the inner wall of the light guide column 6, so that the direct light of the LED can be reflected for multiple times on the inner wall of the light guide column 6 and then enters the annular reflection area 62 to be conducted and distributed in the light guide column 6, and the direct emission from the annular reflection area 62 in the light guide column 6 is avoided, thereby avoiding the light leakage phenomenon, ensuring uniform light emission and good light emission effect; therefore, the utility model discloses simple structure, the cost is lower, avoids the light leak.

The utility model discloses but wide application in illumination field.

Claims

1. An LED bulb, its characterized in that: the LED lamp comprises a lamp holder (1), a light-transmitting bulb shell (2), an insulating connecting piece (3), a driving circuit board (4), a heat-dissipation light source board (5) with an LED and a light-guiding column (6), wherein two ends of the insulating connecting piece (3) are respectively connected with the lamp holder (1) and the light-transmitting bulb shell (2) to form a cavity for accommodating elements, the input end and the output end of the driving circuit board (4) are respectively electrically connected with the lamp holder (1) and the LED to form a power supply circuit, the bottom of the light-guiding column (6) covers the heat-dissipation light source board (5) to conduct and radiate the light emitted by the LED through the light-guiding column (6) and outwards emit the light through the light-transmitting bulb shell (2), an annular reflecting area (62) is arranged at the bottom of the inner wall of the light-guiding column (6) to enable the direct light emitted by the LED to emit light on the inner wall of the light, then enters the light guide column (6) above the annular reflecting area (62) for conduction and diffusion, and the direct ejection from the light guide column (6) at the annular reflecting area (62) is avoided.

2. The LED bulb of claim 1, wherein: the annular reflective region (62) is a reflective coating.

3. The LED bulb of claim 2, wherein: the reflective coating is a silvered reflective coating.

4. The LED bulb of claim 1, wherein: the annular reflecting area (62) is a frosted layer.

5. The LED bulb according to any one of claims 1 to 3, wherein: the side wall of the light guide column (6) above the annular reflecting area (62) is provided with a plurality of grooves (60), the top of the light guide column (6) is in an annular step shape, the lengths of the grooves (60) are the same, and the grooves extend downwards from the top of the annular step shape.

6. The LED bulb of claim 5, wherein: the groove (60) is a blind groove, and the opening of the groove is positioned on the outer wall or the inner wall of the light guide column (6).

7. The LED bulb of claim 5, wherein: the groove (60) is a through groove, and the opening of the groove penetrates through the outer wall and the inner wall of the light guide column (6).

8. The LED bulb according to any one of claims 1 to 3, wherein: the LED bulb further comprises a heat dissipation cover (7), wherein the top surface of the heat dissipation cover (7) is in contact connection with the bottom surface of the heat dissipation light source plate (5) to dissipate heat by conducting heat.

9. The LED bulb of claim 8, wherein: the driving circuit board (4) can receive wireless control signals, and a wireless signal opening (70) is formed in the side wall of the heat dissipation cover (7) so as to receive the wireless control signals.

10. The LED bulb of claim 8, wherein: the output of dirver circuit board (4) is equipped with contact pin (40), be equipped with female terminal (41) on heat dissipation light source board (5), what contact pin (40) were insulating passes heat dissipation cover (7) behind heat dissipation light source board (5) with female terminal (41) are connected to carry out electric connection and structural connection simultaneously.