CN111503572A

CN111503572A - Lamp fitting

Info

Publication number: CN111503572A
Application number: CN201911141624.4A
Authority: CN
Inventors: 周明杰; 陈萍
Original assignee: Oceans King Lighting Science and Technology Co Ltd; Oceans King Dongguan Lighting Technology Co Ltd; Shenzhen Oceans King Lighting Engineering Co Ltd
Current assignee: Oceans King Lighting Science and Technology Co Ltd; Oceans King Dongguan Lighting Technology Co Ltd; Shenzhen Oceans King Lighting Engineering Co Ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-08-07

Abstract

The invention relates to a lamp, which comprises a heat dissipation substrate, a light source assembly and a driving assembly, wherein the light source assembly is arranged on the front surface of the heat dissipation substrate, the driving assembly is arranged on the back surface of the heat dissipation substrate, so that the light source assembly, the heat dissipation substrate and the driving assembly are sequentially arranged in a stacked manner, a first through hole is formed in the heat dissipation substrate, and a lead electrically connected with the light source assembly and the driving assembly penetrates through the first through hole.

Description

Lamp fitting

Technical Field

The invention relates to the field of lighting devices, in particular to a lamp.

Background

L ED lamps and lanterns have energy-conserving, advantages such as environmental protection L ED lamps and lanterns during operation give off the heat and very concentrate, specifically, L ED lamp pearl and drive circuit are main heating sources, in order to guarantee the normal work and the normal life of lamp pearl and drive circuit, need in time derive the heat in the L ED lamps and lanterns when L ED lamps and lanterns work.

Traditional L ED lamps and lanterns generally can set up the shell that has the heat dissipation function, and L ED lamp pearl and drive circuit set up in the holding cavity of shell, derive L ED lamp pearl and drive circuit's heat through the shell.

However, L ED lamp pearl and drive circuit set up same holding intracavity, and L ED lamp pearl and the heat that drive circuit sent disturb each other, only rely on the shell to dispel the heat, hardly satisfy the heat dissipation demand.

Disclosure of Invention

Therefore, a lamp with better heat dissipation performance is needed.

A lamp comprises a heat dissipation substrate, a light source assembly and a driving assembly, wherein the light source assembly is arranged on the front surface of the heat dissipation substrate, and the driving assembly is arranged on the back surface of the heat dissipation substrate, so that the light source assembly, the heat dissipation substrate and the driving assembly are sequentially arranged in a stacked manner;

the heat dissipation substrate is provided with a first through hole, and a wire electrically connected with the light source assembly and the driving assembly penetrates through the first through hole.

The light source assembly and the driving assembly of the lamp are separated by the heat dissipation substrate, the heat dissipation space of the light source assembly and the heat dissipation assembly is enlarged, the light source assembly and the driving assembly are not arranged in the same accommodating cavity, heat emitted by the light source assembly and the driving assembly cannot interfere with each other, and compared with a traditional lamp in the same accommodating cavity formed by L ED lamp beads and a driving circuit, the lamp is better in heat dissipation performance, and the structure can be suitable for high-power lamps.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Wherein:

fig. 1 is a schematic perspective view of a lamp according to an embodiment.

Fig. 2 is a schematic side view of the lamp shown in fig. 1.

Fig. 3 is a schematic cross-sectional view of the lamp shown in fig. 1.

Fig. 4 is an exploded view of the lamp shown in fig. 1.

Fig. 5 is a simulated temperature diagram of 200W lamp at 40 ℃ in the environment using test software.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The lamp according to one embodiment shown in fig. 1 to 4 includes a heat dissipating substrate 10, a light source assembly 20, and a driving assembly 30.

The light source assembly 20 is disposed on the front surface of the heat dissipation substrate 10, and the driving assembly 30 is disposed on the back surface of the heat dissipation substrate 10, so that the light source assembly 20, the heat dissipation substrate 10, and the driving assembly 30 are sequentially stacked.

The heat dissipation substrate 10 is in contact with the light source assembly 20 and the driving assembly 30, respectively, so as to conduct away heat generated by the light source assembly 20 and the driving assembly 30 during the operation of the lamp by means of heat conduction.

The light source assembly 20, the heat dissipation substrate 10 and the driving assembly 30 are sequentially stacked, so that the light source assembly 20 and the driving assembly 30 are in direct contact with the outside, the heat dissipation space of the light source assembly 20 and the driving assembly 30 is enlarged, and the overall structure of the lamp is more compact. In addition, the light source assembly 20, the heat dissipation substrate 10, and the driving assembly 30 are sequentially stacked, and the lamp using such an arrangement has high mechanical strength.

In general, the heat dissipating substrate 10 may be a metal plate.

Referring to fig. 4, in the present embodiment, the heat dissipation substrate 10 is a square plate. In other embodiments, the heat dissipating substrate 10 may have other shapes without affecting the specific functions thereof.

A first through hole (not shown) is formed in the heat dissipation substrate 10, and a wire electrically connecting the light source assembly 20 and the driving assembly 30 passes through the first through hole, so that the light source assembly 20 and the driving assembly 30 are electrically connected.

The light source assembly 20 and the driving assembly 30 of the lamp are separated by the heat dissipation substrate 10, on one hand, the heat dissipation space of the light source assembly 20 and the driving assembly 30 is enlarged, and the light source assembly 20 and the driving assembly 30 are not arranged in the same accommodating cavity, so that the heat emitted by the light source assembly 20 and the driving assembly 30 cannot interfere with each other.

Compared with L ED lamp beads and a driving circuit, the lamp is provided with the same traditional lamp in the accommodating cavity, the heat dissipation performance of the lamp is better, and the structure can be suitable for the lamp with high power.

Referring to the drawings, the light source assembly 20 includes a light source plate 22 stacked on the front surface of the heat dissipating substrate 10, and a surface of the light source plate 22 away from the heat dissipating substrate 10 is used for emitting light.

In this embodiment, the light source board 22 includes a substrate and a plurality of lamp beads disposed on the substrate, the substrate may be an aluminum substrate or an aluminum alloy substrate to enhance heat dissipation, and preferably, the lamp beads are L ED lamp beads.

Referring to fig. 3, the front surface of the heat dissipating substrate 10 is formed with a groove 14 matching the shape of the light source board 22, and the light source board 22 is disposed in the groove 14.

Referring to fig. 4, in the present embodiment, the grooves 14 are formed by recessing the front surface of the heat dissipating substrate 10, so that the protrusions 15 matching the shape of the grooves 14 are formed on the back surface of the heat dissipating substrate 10.

The front surface of the heat-dissipating substrate 10 is provided with first heat-dissipating fins 16 at the periphery of the groove 14. The first radiator fins 16 may function to enhance heat dissipation.

Referring to the drawings, in the present embodiment, an explosion-proof connector 23 is disposed on a surface of the light source board 22 close to the heat dissipation substrate 10, the explosion-proof connector 23 is disposed in the first through hole, and a conductive wire for electrically connecting the light source board 22 and the driving assembly 30 passes through the explosion-proof connector 23.

In the present embodiment, the light source assembly 20 and the driving assembly 30 are electrically connected to each other, and actually, the light source plate 22 and the driving assembly 30 are electrically connected to each other.

With reference to the drawings, in this embodiment, the light source assembly 20 further includes a lens 24, a transparent member 26 and a pressing ring 28, the transparent member 26, the lens 24 and the light source plate 22 are sequentially stacked, the transparent member 26 is fixed on the pressing ring 28, the front surface of the heat dissipation substrate 10, the pressing ring 28 and the transparent member 26 enclose a light source cavity, and the lens 24 and the light source plate 22 are disposed in the light source cavity.

Specifically, in the present embodiment, the pressing ring 28 is screwed to the side wall of the groove 14 in the heat dissipating substrate 10.

In order to ensure the tightness of the light source cavity, an O-shaped sealing ring 25 is arranged between the pressing ring 28 and the side wall of the groove 14.

Referring to the drawings, in the present embodiment, the second heat dissipation fins 18 are disposed on the back surface of the heat dissipation substrate 10, and the driving assembly 30 directly contacts the second heat dissipation fins 18, so that the light source plate 22, the bottom surface of the groove 14, the second heat dissipation fins 18, and the driving assembly 30 are sequentially stacked.

Specifically, in the present embodiment, the second heat dissipating fins 18 are radially distributed in a circular shape, and the driving assembly 30 is disposed at the center of the second heat dissipating fins 18, so as to increase the heat dissipating speed of the heat dissipating assembly 30.

Referring to fig. 4, in the present embodiment, the driving assembly 30 includes a driving housing 32 and a driving circuit 34, wherein an accommodating cavity is disposed in the driving housing 32, and the driving circuit 34 is disposed in the accommodating cavity.

In this embodiment, the driving housing 32 includes a driving chamber 322 and a driving chamber cover 324, and a sealing ring 326 is disposed between the driving chamber 322 and the driving chamber cover 324 to ensure sealing.

The driving housing 32 is provided with a second through hole 36 communicated with the accommodating cavity, and a compression nut 38 is provided in the second through hole 36, and a lead for electrically connecting the light source assembly 20 and other devices passes through the compression nut 38.

In the present embodiment, the light source assembly 20 and the driving assembly 30 are electrically connected to each other, and actually, the light source plate 22 and the driving circuit 34 are electrically connected to each other.

Preferably, in the present embodiment, the lamp further includes a U-shaped bracket 40 rotatably connected to a side surface of the heat dissipation substrate 10.

The U-shaped bracket 40 can realize a vertical structure of the lamp together with the heat dissipation substrate 20.

Test example 1

The lamp shown in fig. 1 to 4 is provided with a power of 200W.

The 200W lamp was subjected to a working simulation with an ambient temperature of 40 ℃ using test software, and the simulation results are shown in FIG. 5.

As can be seen from FIG. 5, when the ambient temperature is 40 ℃, the maximum temperature is 76.982 ℃, and the requirement that the temperature at the point L EDTs is less than 85 ℃ is met, so that the comprehensive judgment shows that the current structure meets the heat dissipation requirement.

The 200W lamp is subjected to working test, the highest temperature in the driving cavity is 69.1 ℃ when the ambient temperature is 30.9 ℃, the highest temperature of the lamp bead is 88 ℃ when the ambient temperature is 29.3 ℃, and the highest temperature of the radiating substrate is 84 ℃, so that the requirements that the ambient temperature is 30 ℃ and the temperature of a light source pin is less than 85 ℃ are met. Comprehensive judgment: the current structure meets the heat dissipation requirements.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A lamp is characterized by comprising a heat dissipation substrate, a light source assembly and a driving assembly, wherein the light source assembly is arranged on the front surface of the heat dissipation substrate, and the driving assembly is arranged on the back surface of the heat dissipation substrate, so that the light source assembly, the heat dissipation substrate and the driving assembly are sequentially arranged in a stacked manner;

2. The luminaire of claim 1 wherein the light source assembly comprises a light source board laminated to the front surface of the heat sink substrate, the light source board facing away from the heat sink substrate for emitting light.

3. The lamp of claim 2, wherein the front surface of the heat dissipation substrate forms a groove matching the shape of the light source board, and the light source board is disposed in the groove.

4. A lamp as recited in claim 3, wherein the recess is formed by recessing the front surface of the first heat sink substrate, such that a protrusion matching the shape of the recess is formed on the back surface of the heat sink substrate;

the front surface of the heat dissipation substrate is provided with first heat dissipation fins at the periphery of the groove.

5. The lamp according to claim 2, wherein an explosion-proof joint is disposed on a surface of the light source board close to the heat dissipation substrate, the explosion-proof joint is disposed in the first through hole, and a wire electrically connecting the light source board and the driving assembly passes through the explosion-proof joint.

6. The lamp according to claim 2, wherein the light source assembly further comprises a lens, a transparent member, and a pressing ring, the transparent member, the lens, and the light source plate are sequentially stacked, the transparent member is fixed on the pressing ring, the front surface of the heat dissipation substrate, the pressing ring, and the transparent member define a light source cavity, and the lens and the light source plate are disposed in the light source cavity.

7. The lamp of claim 1, wherein the back surface of the heat-dissipating substrate is provided with second heat-dissipating fins, and the driving assembly directly contacts the second heat-dissipating fins.

8. The lamp of claim 7, wherein the second heat dissipating fins are circularly radially distributed, and the driving assembly is disposed at the center of the second heat dissipating fins.

9. The lamp of claim 1, wherein the driving assembly comprises a driving housing and a driving circuit, the driving housing has a receiving cavity therein, and the driving circuit is disposed in the receiving cavity;

the driving shell is provided with a second through hole communicated with the containing cavity, a compression nut is arranged in the second through hole, and a lead for electrically connecting the light source assembly and other devices penetrates through the compression nut.

10. A lamp as recited in any one of claims 1-9, further comprising a U-shaped bracket pivotally coupled to a side of the heat sink substrate.