CN212057010U

CN212057010U - LED street lamp

Info

Publication number: CN212057010U
Application number: CN202020104220.XU
Authority: CN
Inventors: 朱旭阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-12-01
Anticipated expiration: 2030-01-17

Abstract

The utility model relates to a LED street lamp, including the lamp plate of preceding installation LED lamp pearl, cover the lamp face on give off light to LED lamp pearl and carry out the lens of focusing, carry out radiating fin to the lamp plate, the fin set up at the back of lamp plate; the LED lamp is characterized in that an insulating layer is further arranged between the lamp plate and the radiating fins, hole penetrating spaces for mounting semiconductor refrigerating chips are formed in the insulating layer and the lamp plate, the hot ends of the semiconductor refrigerating chips are attached to the radiating fins, and the cold ends of the semiconductor refrigerating chips are exposed in the spaces between the lamp plate and the lenses. The utility model discloses in, be provided with the insulating layer between lamp plate and fin, prevent that the lamp plate from guaranteeing safety by the fin electric leakage.

Description

LED street lamp

Technical Field

The utility model relates to a LED illumination field, especially a LED street lamp, lamp pearl in this street lamp adopt alternating current drive.

Background

Street lamps refer to lamps providing a road with an illumination function, and generally refer to lamps in a road illumination range in traffic illumination. The street lamp has various forms, wherein the LED street lamp has the advantages of environmental protection, energy conservation, long service life and the like, and is more and more widely applied in the field of illumination.

However, the key component of the current LED street lamp is the lamp panel, which generally adopts a good heat conduction material at present, such as an aluminum plate commonly used, and in order to ensure good heat dissipation effect, the lamp panel is required to be provided with a heat dissipation device to help heat dissipation. In addition, at present, the power supply of the LED street lamp adopts commercial power, the commercial power is converted into direct current through alternating current, the adopted direct current power supply is also a heat source, the heat dissipation pressure of the LED street lamp is more important, and at present, in the production process of the LED street lamp in the industry, continuous efforts are made on how to dissipate heat of the LED street lamp, and a lot of achievements are produced. Chinese patent publication No. CN 209341011U discloses a heat dissipation street lamp, which has a good heat dissipation effect and prolongs the service life of the street lamp. The heat dissipation street lamp comprises a lamp body and a lamp post connected with the lamp body, wherein an LED lamp bead is arranged at the lower end of the lamp body, a lampshade is arranged at the lower end of the lamp body, a radiator is arranged inside the lamp body, the LED lamp bead is installed on the radiator, and a connecting plate connected with the lamp post is arranged on the outer side of the lamp body. A plurality of radiating fins distributed at intervals are vertically arranged on the outer surface of the lamp body, and graphene coatings are arranged on the outer surfaces of the radiating fins and the lamp body; the lamp body is internally provided with a heat conducting plate connected with the inner wall of the lamp body, and the radiator is fixedly arranged on the heat conducting plate. This street lamp dispels heat has very good heat-conducting property through graphite alkene, and the heat back on leading-in to lamp body and the fin of heat on the heat-conducting plate can quick heat dissipation, and then improves the heat dispersion of street lamp. However, since these heat sinks and the like are good conductors, the street lamp is prone to leakage, has a potential safety hazard, and cannot meet the requirements of the street lamp.

SUMMERY OF THE UTILITY MODEL

The utility model discloses in to present LED street lamp, LED lamp pearl direct mount probably causes the potential safety hazard on the good radiator of heat conduction, can not satisfy the not enough of street lamp requirement, the utility model provides a LED street lamp.

The utility model discloses a realize its technical purpose and the technical scheme who adopts is: an LED street lamp comprises a lamp panel, a lens and a radiating fin, wherein the front surface of the lamp panel is provided with an LED lamp bead, the lens covers the surface of the lamp panel and focuses the light emitted by the LED lamp bead, and the radiating fin is arranged on the back surface of the lamp panel; the LED lamp is characterized in that an insulating layer is further arranged between the lamp plate and the radiating fins, hole penetrating spaces for mounting semiconductor refrigerating chips are formed in the insulating layer and the lamp plate, the hot ends of the semiconductor refrigerating chips are attached to the radiating fins, and the cold ends of the semiconductor refrigerating chips are exposed in the spaces between the lamp plate and the lenses.

The utility model discloses in, be provided with the insulating layer between lamp plate and fin, prevent that the lamp plate from guaranteeing safety by the fin electric leakage.

Further, in the above LED street lamp: the thickness of the insulating layer is within 1 cm.

Further, in the above LED street lamp: the thickness of the insulating layer is 4.3 mm.

Further, in the above LED street lamp: when lens install on the lamp plate, still be provided with the sealing washer.

Further, in the above LED street lamp: the lamp beads are LED lamp beads driven by alternating current.

The present invention will be described in more detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a front view of the LED street lamp of the present invention.

Fig. 2 is a cross-sectional view of fig. 1A-a.

Fig. 3 is the utility model discloses ac drive's LED lamp pearl schematic diagram among the LED street lamp.

Detailed Description

Embodiment 1 is an LED street lamp, in which an insulating layer 300 is disposed between a lamp panel 100 and a heat sink 400 to ensure safety, so that no electric leakage occurs due to the heat sink 400. As shown in fig. 1 and fig. 2, the LED street lamp in this embodiment includes a lamp panel 100 with a front surface on which an LED lamp bead 101 is mounted, a lens 200 covering the lamp panel 100 to focus light emitted from the LED lamp bead 101, and a heat sink 400 for dissipating heat from the lamp panel 100, wherein the heat sink 400 is disposed on the back surface of the lamp panel 100. In this embodiment, the lamp panel 100 itself is a printed circuit board, and the lamp bead 101 is welded on the printed circuit board to form the lamp panel, and when installing the lens 200, the sealing ring 201 is further arranged around the lens 200, so that the outdoor street lamp can prevent wind and rain.

In this embodiment, the lamp panel 100 is a printed circuit board, and in order to ensure the insulation property, an insulating layer 300 with a thickness within 1 cm is further disposed on the back surface of the lamp panel, and in this embodiment, the thickness of the insulating layer 300 is 4.3 mm. Like this, the radiating effect of fin 400 outside insulating layer 300 will be very not ideal to lamp plate 100, because the printed circuit board who is lamp plate 100 itself is not just hot good conductor, and insulating layer 300 is not hot good conductor yet, consequently, the lamp pearl 101 of welding on lamp plate (printed circuit board) generates heat and is difficult to be dispersed by the fin, consequently, in this embodiment, be provided with the hole space of installing semiconductor refrigeration chip 500 on lamp plate 100 and insulating layer 300, semiconductor refrigeration chip 500's hot junction hugs closely the fin, the cold junction exposes in the space between lamp plate 100 and lens 200. Like this, can openly absorb lamp plate 100 because LED lamp pearl 101 generate heat produced heat by the cold junction when semiconductor refrigeration chip 500, the heat that the hot junction produced is just distributed by the fin very fast, can guarantee well that lamp pearl 101 works under normal temperature, prolongs its life.

In addition, in this embodiment, the lamp bead 101 is an ac-driven LED lamp bead, as shown in fig. 3, and can be directly soldered on a lamp panel of a printed circuit board, and the lamp bead used in this embodiment is a patent product of the applicant, and its patent publication number is CN 203608403U. The alternating current driven LED lamp bead comprises a light emitting diode D1, a light emitting diode D2, a resistor R1, a resistor R2, a voltage stabilizing tube W1 and a voltage stabilizing tube W2. The anode of the light-emitting diode D1 is connected with the cathode of a voltage regulator tube W1, the anode of the voltage regulator tube W1 is connected with one end (A end) of alternating current, and the cathode of the light-emitting diode D1 is connected with the other end (B end) of the alternating current through a current-limiting resistor R1; the anode of the light-emitting diode D2 is connected with the cathode of a voltage regulator tube W2, the anode of a voltage regulator tube W2 is connected with the other end (B end) of alternating current, and the cathode of the light-emitting diode D2 is connected with one end (A) of the alternating current through a current-limiting resistor R2; when the A terminal is positive, the LED D1 emits light, and when the B terminal is positive, the LED D2 emits light.

Claims

1. An LED street lamp comprises a lamp panel (100) with LED lamp beads (101) arranged in front, a lens (200) covering the surface of the lamp panel (100) and focusing the light emitted by the LED lamp beads (101), and a radiating fin (400) radiating the lamp panel (100), wherein the radiating fin (400) is arranged on the back surface of the lamp panel (100); the method is characterized in that: an insulating layer (300) is further arranged between the lamp panel (100) and the radiating fins (400), a hole penetrating space for mounting the semiconductor refrigeration chip (500) is formed in the insulating layer (300) and the lamp panel (100), the hot end of the semiconductor refrigeration chip (500) is tightly attached to the radiating fins, and the cold end of the semiconductor refrigeration chip is exposed in the space between the lamp panel (100) and the lens (200).

2. The LED street lamp according to claim 1, characterized in that: the thickness of the insulating layer (300) is within 1 cm.

3. The LED street lamp according to claim 2, characterized in that: the thickness of the insulating layer (300) is 4.3 mm.

4. The LED street lamp according to claim 1, characterized in that: when the lens (200) is installed on the lamp panel (100), a sealing ring (201) is further arranged.

5. The LED street lamp according to claim 1, characterized in that: the lamp beads (101) are LED lamp beads driven by alternating current.