CN213872263U

CN213872263U - LED lamp body and LED lamp

Info

Publication number: CN213872263U
Application number: CN202022935173.6U
Authority: CN
Inventors: 廖后彩; 阳凯全; 鲁意; 万亮; 姚伟亚
Original assignee: Shenzhen Wenova Lighting & Electrical Co ltd
Current assignee: Shenzhen Wenova Lighting & Electrical Co ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-08-03
Anticipated expiration: 2030-12-09

Abstract

The utility model discloses a LED lamp body and LED lamp, including PCB board, drive circuit and LED lamp pearl, be provided with drive circuit installing zone and LED lamp pearl installing zone on the PCB board, drive circuit installs the drive circuit installing zone, LED lamp pearl is installed LED lamp pearl installing zone, the drive circuit installing zone with be provided with the safe groove between the LED lamp pearl installing zone, the safe groove runs through thereby the PCB board forms hollow out construction, drive circuit with LED lamp pearl electricity is connected, drive circuit is used for the drive LED lamp pearl work. The utility model discloses can keep apart drive circuit and LED lamp pearl through the safety groove, realize LED lamp pearl and drive circuit's thermoelectric separation.

Description

LED lamp body and LED lamp

Technical Field

The utility model relates to a printed circuit board technical field especially relates to a LED lamp body and LED lamp.

Background

Printed circuit boards (PCB boards), also known as printed circuit boards, are providers of electrical connections for electronic components. The main advantages of using a printed circuit board are that wiring and assembly errors can be greatly reduced, the level of automation and the production labor rate are improved.

At present, there is a design of integrating lamp beads and a driving circuit on a PCB board in the market, which is called "DOB (driver on board") design for short, as shown in fig. 1, the driving circuit core components and the LED lamp beads on the PCB board designed by the traditional DOB are distributed in a scattered manner, and in the actual use process, 2 major potential safety quality hazards are inevitably generated: 1. the problem of high-voltage discharge ignition exists between the LED lamp beads and the driving circuit, and the early failure of an LED product is caused by the fact that the high-voltage lamp beads generated by the driving circuit are broken down; 2. because the distance between the driving circuit and the LED lamp bead is short, heat generated by high-heating components such as a driving IC and an energy storage inductor in the driving circuit is quickly transferred to the LED lamp bead (the PCT of the LED support is resistant to about 105 ℃, and the heat after the transfer often exceeds 105 ℃), the early thermal failure problem is brought to the LED lamp bead, the product quality of the LED lamp is further influenced, and great economic loss is brought to LED lighting enterprises.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a LED lamp body can effectively realize the thermoelectric separation between LED lamp pearl and the drive circuit.

The invention also aims to provide an LED lamp adopting the LED lamp body.

The utility model discloses an one of the purpose adopts following technical scheme to realize: an LED lamp body comprises a PCB, a driving circuit and LED lamp beads, wherein the PCB is provided with a driving circuit mounting area and an LED lamp bead mounting area; a safety groove is arranged between the driving circuit mounting area and the LED lamp bead mounting area and penetrates through the PCB so as to form a hollow structure; the driving circuit is electrically connected with the LED lamp beads and is used for driving the LED lamp beads to work.

Further, the drive circuit installing area is arranged in the center of the PCB, and the LED lamp bead installing area surrounds the drive circuit installing area.

Further, the safety slot comprises two arc-shaped slots, the two arc-shaped slots are enclosed to form a circular driving circuit installation area, the two arc-shaped slots are isolated by two connecting pieces, and the connecting pieces are connected with the driving circuit installation area and the LED lamp bead installation area.

Further, drive circuit is including the connecting terminal, rectifier bridge heap, input electrolysis, output electrolysis, master control IC, inductance and the diode that connect gradually, the external zero line of input and live wire of connecting terminal.

Furthermore, a plurality of LED lamp pearl sets up safety groove outside and apart from in the region of PCB plate edge 1.5mm to 2 mm.

Furthermore, a plurality of LED lamp pearl evenly distributed is in LED lamp pearl installing zone.

Furthermore, a plurality of LED lamp pearl evenly distributed just follows the central line symmetric distribution of PCB board.

Further, the PCB is a copper substrate or an aluminum substrate.

The second purpose of the utility model is realized by adopting the following technical scheme:

an LED lamp comprises a bulb shell, a lamp holder and any one of the LED lamp bodies, wherein the LED lamp body is arranged in the shell, the shell is made of a metal material with good heat conduction performance, the LED lamp body is fixed on the shell, the shell is in heat conduction connection with a drive circuit mounting area in a PCB, and the bulb shell is detachably connected with the shell and used for covering the LED lamp body between the bulb shell and the shell; the lamp cap is connected with the shell and electrically connected with the driving circuit.

Compared with the prior art, the beneficial effects of the utility model reside in that:

(1) the driving circuit and the LED lamp beads are isolated through the safety groove, and thermoelectric separation of the LED lamp beads and the driving circuit is achieved.

(2) The LED lamp has the advantages that the scattered distribution of the driving circuit and the LED lamp beads on the PCB is avoided, the driving circuit and the LED lamp beads are intensively arranged in a limited area, the heat is concentrated, and the heat can be rapidly LED out.

Drawings

FIG. 1 is a schematic diagram of a conventional DOB design;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a control schematic diagram of the present invention;

fig. 4 is a schematic view of the LED lamp of the present invention.

In the figure: 1. inputting electrolysis; 2. a rectifier bridge stack; 3. a connection terminal; 4. output electrolysis; 5. an inductance; 6. a master control IC; 7. a diode; 8. LED lamp beads; 9. a PCB board; 10. a connecting member; 11. a safety groove; 12. a bulb shell; 13. a heat conducting component; 14. a housing; 15. a lamp cap; 16. LED1 lamp beads; 17. LED2 lamp pearl.

Detailed Description

Embodiments of the present invention will be further described with reference to the accompanying drawings and the detailed description.

As shown in fig. 1-2, the LED lamp body of the present invention comprises a PCB board 9, a driving circuit and LED lamp beads 8, wherein the PCB board is provided with a driving circuit installation region and LED lamp bead installation region, the driving circuit is installed in the driving circuit installation region, and the LED lamp beads are installed in the LED lamp bead installation region; a safety groove 11 is arranged between the driving circuit mounting area and the LED lamp bead mounting area, and the safety groove 11 penetrates through the PCB 9 to form a hollow structure; the driving circuit is electrically connected with the LED lamp beads 8 and is used for driving the LED lamp beads 8 to work.

The utility model discloses in, the drive circuit installing zone with be provided with safety groove 11 between the LED lamp pearl installing zone, safety groove 11 runs through thereby PCB board 9 forms hollow out construction, because the air heat conductivity is relatively poor, the heat that the drive circuit of drive circuit installing zone installation gived off can mainly concentrate in the drive circuit installing zone.

As shown in fig. 2, in this embodiment, the driving circuit installation area is disposed in the center of the PCB, the LED lamp bead installation area surrounds the driving circuit installation area, the safety slot includes two arc-shaped slots, the two arc-shaped slots surround and form a circular driving circuit installation area, the two arc-shaped slots are isolated by two connecting members 11, and the connecting members 11 connect the driving circuit installation area and the LED lamp bead installation area.

As shown in fig. 3, further, drive circuit includes connecting terminal 3 and the rectifier bridge heap 2, input electrolysis 1, output electrolysis 4, master control IC6, inductance 5 and the diode 7 that connect gradually with connecting terminal 3 output, the external zero line of connecting terminal 3 input and live wire through concentrating the drive circuit core part and setting up in safety groove 11 inboard, can make the drive circuit core part when generating heat, the heat can be concentrated safety groove 11 is regional, and heat radiating area reduces, and the heat can not spread fast on LED lamp pearl 8.

Preferably, a plurality of LED lamp pearl 8 sets up safe groove 11 outside and in the region of 1.5mm to 2mm apart from PCB board 9 edge, this region is the ann rule creepage distance of PCB board, a plurality of LED lamp pearl 8 evenly distributed in this region, LED lamp pearl 8 evenly distributed is arranged around PCB board 9 edge, and LED lamp pearl 8 self produces the heat and can not pile up together, can go out through the quick derivation of PCB board 9, promotes LED lamp pearl 8's life-span. Meanwhile, light generated by the LED lamp beads 8 is emitted to the bulb shell of the LED lamp and diffused through the bulb shell, so that uniform light spots can be emitted around the LED lamp, and the eyesight of people can be protected.

In order to make the PCB board 9 have an aesthetic feeling, preferably, the plurality of LED beads 8 further need to be symmetrically distributed along a center line of the PCB board 9.

Preferably, the PCB 9 is a copper substrate or an aluminum substrate.

The utility model also provides another embodiment, a LED lamp, it includes bubble shell 12, shell 14, lamp holder 15 and above-mentioned LED lamp body, the LED lamp body sets up in shell 14, shell 14 is made by the metal material that heat conductivility is good, the LED lamp body is fixed on shell 14, and shell 14 is connected with the drive circuit installation district heat conduction in PCB board 9, bubble shell 12 with shell 14 can dismantle the connection, be used for with the LED lamp body closing cap between bubble shell 12 and shell 14; the lamp head 15 is connected to the housing 14 and electrically connected to the driving circuit.

Because the installation area of the driving circuit on the PCB 9 is the heat main concentrated place, most of the heat can be directly transferred to the shell through the heat conducting component 13 installed between the driving circuit and the shell 14, and then a small amount of heat is dissipated from the connecting piece 10 through the heat dissipation capacity of the PCB 9, so that the thermoelectric separation of the LED lamp beads is realized.

TABLE 1 LED Lamp of traditional DOB design and the utility model discloses LED Lamp actual temperature test contrast data

As shown in the table, wherein the LED lamp pearl of traditional DOB design is because the distance that generates heat the device apart from drive circuit is different, and the temperature that is close to the LED lamp pearl that generates heat the device is generally about 110 ℃ to 112 ℃, has far exceeded LED lamp support material PCT temperature resistant degree, and the utility model discloses in, because on most heat can be through the direct transmission of the heat-conducting component of installation between drive circuit and the shell to the shell, the heat-sinking capability through PCB board 9 itself of few part heats later is followed connecting piece 10 and is dispeled. Referring to fig. 2, in the present embodiment, an LED1 bead 16 disposed in a direction opposite to the direction of the connector and an LED2 bead 17 disposed in a direction opposite to the safety groove are selected, although the LED1 bead 16 still may be affected by a portion of heat, the temperature thereof is generally maintained in a range of about 103 ℃, and the temperature of the LED2 bead 17 does not generally exceed 101 ℃ due to slow heat conduction of air in the safety groove. The lamp beads in the two parts can meet the PCT temperature resistance degree of the LED lamp support.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. An LED lamp body is characterized by comprising a PCB, a driving circuit and LED lamp beads, wherein the PCB is provided with a driving circuit mounting area and an LED lamp bead mounting area; a safety groove is arranged between the driving circuit mounting area and the LED lamp bead mounting area and penetrates through the PCB so as to form a hollow structure; the driving circuit is electrically connected with the LED lamp beads and is used for driving the LED lamp beads to work.

2. The LED lamp body of claim 1, wherein the driver circuit mounting area is disposed in the center of the PCB, and the LED lamp bead mounting area surrounds the driver circuit mounting area.

3. The LED lamp of claim 2, wherein said safety groove comprises two arc-shaped grooves, said two arc-shaped grooves enclosing a circular driving circuit mounting area, said two arc-shaped grooves being isolated from each other by two connecting members, said connecting members connecting said driving circuit mounting area and said LED lamp bead mounting area.

4. The LED lamp body according to claim 3, wherein the driving circuit comprises a connecting terminal, a rectifier bridge stack, an input electrolysis, an output electrolysis, a main control IC, an inductor and a diode which are connected in sequence, and an input end of the connecting terminal is externally connected with a zero line and a live line.

5. The LED lamp body of claim 3, wherein a plurality of the LED beads are arranged outside the safety groove and within an area 1.5mm to 2mm from the edge of the PCB.

6. The LED lamp body of claim 5, wherein a plurality of the LED beads are uniformly distributed in the LED bead mounting area.

7. The LED lamp body of claim 6, wherein a plurality of the LED beads are uniformly distributed and symmetrically distributed along a center line of the PCB.

8. The LED lamp body of claim 1, wherein the PCB board is a copper or aluminum board.

9. An LED lamp, characterized in that: the LED lamp comprises a bulb shell, a lamp holder and the LED lamp body as claimed in any one of claims 1 to 8, wherein the LED lamp body is arranged in the shell, the shell is made of a metal material with good heat conduction performance, the LED lamp body is fixed on the shell, the shell is in heat conduction connection with a driving circuit mounting area in a PCB, and the bulb shell is detachably connected with the shell and used for covering the LED lamp body between the bulb shell and the shell; the lamp cap is connected with the shell and electrically connected with the driving circuit.