CN204962473U - A light emitting diode (LED) spotlight - Google Patents

Abstract

The utility model relates to an LED spotlight, comprising a lamp cap, a driving power supply, self-tapping locking screws, a COB light source, a heat dissipation shell, and a lens; the lamp cap is provided with a power socket and an assembly screw hole, and the heat dissipation shell is distributed with heat dissipation The fins are provided with convection holes and wiring holes; the lamp holder and the heat dissipation shell are assembled with self-tapping locking screws through the assembly screw holes; the COB light source is bonded to the heat dissipation shell through heat-conducting double-sided adhesive; the lens is assembled on the bottom of the heat dissipation shell, It is fixed on the heat dissipation shell; the driving power is fixed inside the lamp head, and the driving power is connected to the COB light source for power supply through the wiring hole. The LED spotlight of the utility model has the advantages of high heat dissipation efficiency, long service life and compact structure through the double heat dissipation of radiation materials and fins, and realizes the integrated design of heat dissipation structure and shell, and is a highly reliable lamp.

Description

A kind of LED spotlight

technical field

The utility model relates to an LED spotlight, which belongs to the technical field of semiconductor lighting.

Background technique

Because LED has the characteristics of small size, high luminous efficiency, impact resistance, strong earthquake resistance, energy saving and environmental protection, etc., LED lighting fixtures have become a new generation of green light sources. LED spotlight is a high-power LED lamp for indoor lighting. The heat dissipation and reliability of LED spotlights currently on the market are not very satisfactory. Some LED spotlights have complex structures, high processing and manufacturing costs, and unattractive appearance. It is the key to research and development to study the integrated design of heat dissipation structure and shell of LED spotlights to reduce the impact of high temperature on the luminous flux output, color temperature and reliability of LED spotlights.

Heat radiation is a new direction to improve the heat dissipation capacity of LED lamps. Due to the low heat radiation capacity of the metal shell of the lamp, it can be almost ignored, and it can only dissipate heat through heat conduction and heat convection. Enhancing the thermal radiation capability of lamps by spraying radiation materials not only makes the LED spotlights simple in structure and beautiful in appearance, but also reduces the processing and manufacturing costs of lamps.

Utility model content

Aiming at the defects in the prior art, the purpose of this utility model is to provide an LED spotlight, which has the characteristics of simple structure, beautiful appearance, superior comprehensive performance and low manufacturing cost. This LED spotlight adopts spraying radiation material to enhance the heat radiation ability of the lamp, and at the same time makes full use of the convective heat exchange between the cooling fins and the air to improve the heat dissipation capacity, effectively reduce the temperature of the LED light source, and realize the heat dissipation structure and shell of the LED spotlight Integrated design improves the reliability of LED spotlights.

In order to achieve the purpose of above-mentioned invention creation, the utility model adopts following technical scheme:

An LED spotlight, comprising a lamp holder, a driving power supply, self-tapping locking screws, a COB light source, a heat dissipation housing, and a lens; the lamp holder is provided with a power socket and assembly screw holes, and heat dissipation fins and openings are distributed inside the heat dissipation housing. There are convection holes and wiring holes; the lamp holder and the heat dissipation shell are assembled with self-tapping locking screws through the assembly screw holes; the COB light source is bonded to the heat dissipation shell through heat-conducting double-sided adhesive; the lens is assembled at the bottom of the heat dissipation shell and fixed on the heat dissipation shell Above; the driving power is fixed inside the lamp head, and the driving power is connected to the COB light source through the wiring hole for power supply.

The lamp head is a standard MR16 interface form.

The surface of the heat dissipation shell is sprayed with radiation material.

The driving power supply includes an AC/DC module and a DC/DC module inside, and the AC/DC module is electrically connected to the DC/DC module. The AC/DC module is used to convert 220V alternating current into direct current, and the DC/DC module is used for Convert high-voltage direct current into low-voltage direct current; there is an over-temperature protection circuit in the drive power supply, and when the temperature of the drive power supply exceeds 80°C, the drive power supply will automatically power off.

Compared with the prior art, the utility model has the following substantive features and advantages:

1. High cooling efficiency

By increasing the surface area of the heat dissipation shell and spraying radiation materials, the problem of low heat radiation capacity of traditional LED spotlights is solved, and rapid heat dissipation is achieved; at the same time, heat conduction paths are shortened by adding heat dissipation fins and convection holes inside the heat dissipation shell, allowing In the process of heat transfer, the heat is dissipated while being transferred, and the cooperation of the two effectively speeds up the heat dissipation speed and increases the heat dissipation efficiency.

2. High service life and reliability

The utility model LED spotlight adopts the combination of natural convection fin heat dissipation and radiation heat dissipation, with fast heat dissipation speed, high efficiency, low junction temperature of LED chips, which can ensure the performance of LED spotlight light flux output, color temperature, etc., and also avoids heat damage. Influence of driving power. At the same time, there is an over-temperature protection circuit inside the power supply to control the chip temperature within a certain range and better protect the power supply. These have improved the service life and reliability of the spotlight.

3. Integrated design of heat dissipation structure and shell

The LED spotlight of the utility model changes the situation that the heat dissipation structure of the traditional LED lamp is separated from the lamp shell, realizes the integrated design of the heat dissipation structure and the shell, and has a simple structure and a beautiful appearance. The assembly threaded hole of the lamp head and the heat dissipation shell adopts an embedded design, which cleverly hides the connecting device without affecting the assembly; the lens is fixedly connected with the heat dissipation shell through buckles; the mechanical strength of the LED spotlight is enhanced. The heat dissipation shell is gradually gathered from the bottom to the top, and the air convection channels are evenly distributed on the shell. The entire shape has no abrupt edges and corners, and the curve is beautiful, which avoids aesthetic fatigue.

Description of drawings

Fig. 1 is a sectional view of the overall structure of the embodiment of the utility model.

Fig. 2 is a top view of part of the structure of the embodiment of the utility model.

Fig. 3 is a front view of the overall structure of the embodiment of the utility model.

Fig. 4 is an isometric view of the overall structure of the embodiment of the present invention.

detailed description

The preferred embodiment of the utility model is described as follows in conjunction with the accompanying drawings:

As shown in Figures 1 to 4, an LED spotlight includes a lamp cap 1, a driving power supply 2, a self-tapping locking screw 3, a COB light source 4, a heat dissipation shell 5, and a lens 6; the lamp cap 1 is provided with a power plug Holes 8, assembly screw holes 7, cooling fins 9, convection holes 10 and wiring holes 12 are distributed inside the heat dissipation shell 5; the lamp holder 1 and heat dissipation shell 5 are assembled with self-tapping locking screws 3 through the assembly screw holes 7 ; The COB light source 4 is bonded on the heat dissipation shell 5 through heat-conducting double-sided adhesive; the lens 6 is assembled on the bottom of the heat dissipation shell 5 and fixed on the heat dissipation shell 5; the driving power supply 2 is fixed inside the lamp holder 1, and the driving power supply 2 passes through the wiring hole 12 and the COB light source 4 are wired for power supply.

The lamp cap 1 is a standard MR16 interface form.

The surface of the heat dissipation housing 5 is sprayed with radiation material 11 .

The driving power supply 2 includes an AC/DC module and a DC/DC module, the AC/DC module is electrically connected to the DC/DC module, the AC/DC module is used to convert 220V alternating current into direct current, and the DC/DC module is used for To convert high-voltage direct current into low-voltage direct current; there is an over-temperature protection circuit in the driving power supply 2, and when the temperature of the driving power supply 2 exceeds 80°C, the driving power supply 2 will automatically cut off the power. In this way, the temperature of the COB light source 4 can be controlled within a certain range so as not to burn out due to an infinite rise.

Principle of the present utility model is as follows:

Referring to Fig. 1 and Fig. 2, after the driving power supply 2 is powered on, the COB light source 4 emits light and generates heat. The heat is first absorbed by the ceramic substrate of the COB light source 4 and transferred to the heat dissipation shell 5, and then transferred to the heat dissipation fins 9 through the thin plate of the heat dissipation shell 5 And the surface of the heat dissipation shell 5 , and then transferred to the radiation material 11 on the surface of the heat dissipation shell 5 . The heat on the surface of the heat dissipation housing 5 is released to the air through the heat radiation of the radiation material 11 . At the same time, the surface of the heat dissipation fin 9 and the heat dissipation shell 5 releases heat by contacting with air to generate air convection.

Claims (4)

1. a LED spotlight, is characterized in that: comprise lamp holder (1), driving power (2), self-tapping lock screw (3), COB light source (4), heat-dissipating casing (5), lens (6); Described lamp holder (1) has supply hub (8), assembling screw (7), heat-dissipating casing (5) inside is distributed with radiating fin (9), has convection holes (10) and wiring hole (12); Described lamp holder (1) and heat-dissipating casing (5) adopt self-tapping lock screw (3) assembling by assembling screw (7); COB light source (4) is bonded on heat-dissipating casing (5) by bond plies; Lens (6) are assemblied in heat-dissipating casing (5) bottom, are fixed on heat-dissipating casing (5); It is inner that driving power (2) is fixed on lamp holder (1), and described driving power (2) is powered by wiring hole (12) and COB light source (4) wiring.

2. LED spotlight according to claim 1, is characterized in that: described lamp holder (1) is the MR16 interface shape of standard.

3. LED spotlight according to claim 1, is characterized in that: described heat-dissipating casing (5) surface spraying radiative material (11).

4. LED spotlight according to claim 1, it is characterized in that: described driving power (2) inside comprises AC/DC module and DC/DC module, be electrically connected between AC/DC module with DC/DC module, it is direct current that AC/DC module is used for the AC conversion of 220V, and DC/DC module is used for high voltage direct current to be converted into low-voltage DC; Driving power has thermal-shutdown circuit in (2), when driving power (2) temperature is more than 80 DEG C, and driving power (2) auto-breaking.