CN202902068U

CN202902068U - Light emitting diode (LED) aeronautical lamp

Info

Publication number: CN202902068U
Application number: CN2012205939949U
Authority: CN
Inventors: 林培林
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-12
Filing date: 2012-11-12
Publication date: 2013-04-24
Anticipated expiration: 2022-11-12

Abstract

The utility model discloses a light emitting diode (LED) aeronautical lamp. The aeronautical lamp comprises an LED lamp panel, a copper substrate, an aluminum base, a lamp shade and a power supply, wherein a groove is formed on the aluminum base; a nickel layer is plated at the bottom of the groove; solder paste respectively wraps two surfaces of the copper substrate; one surface of the copper substrate is welded with the bottom of the groove through one covering solder paste; the other surface of the copper substrate is welded with the LED lamp panel through the other covering solder paste; the power supply is accommodated in the aluminum substrate and connected with the LED lamp panel; and the lamp shade is fixedly connected with the aluminum base. According to the aeronautical lamp, the LED lamp panel and the aluminum base are respectively welded with the copper substrate through the low-temperature solder paste, so that the aluminum base and the LED lamp plate which cannot be subjected to high-temperature reflow soldering are effectively protected; heat is conducted through direct welding of the copper substrate and the aluminum base, so that the aeronautical lamp is simple in structure and has good effects of dissipating heat and resisting ageing, and a phenomenon that the service life of the LED is influenced because high junction temperature is generated due to a heat dissipation binder.

Description

The LED aeronautical light

Technical field

The utility model relates to lighting technical field, relates in particular to a kind of LED aeronautical light.

Background technology

In the LED industry, the heat radiation of LED aeronautical light is a technical barrier.So far, each large LED aeronautical light manufacturing firm does not all have better way to solve this heat dissipation problem.The radiator structure that existing employing aluminium base and thermal grease are bonding causes the heat radiation temperature difference between LED, aluminium base and aluminium base (being the aeronautical light shell) larger, and the LED junction temperature is higher.When the LED junction temperature more than 70 ℃ the time, LED lamp pearl will be subject to badly damaged, causes light decay, affects the life-span of whole LED light fixture.

At present, adopt aluminium base to be applied on the LED, when more being applied to the LED aeronautical light, its radiating effect is not good enough.Particularly need to arrange one deck heat radiation adhesive between aluminium base and aluminium shell and be bonded together, thermal resistance is too large.After the LED heat conducted to aluminium base, the heat of aluminium base just can be directly transferred on the aeronautical light shell body by thermal paste, caused LED and skin temperature higher.And the junction temperature of LED lamp pearl or LED module is during greater than 75 ℃, and the life-span of LED can shorten greatly.In addition, the bad processing of the welding procedure between aluminium base and aluminium base, thermal grease can be aging through long-term the use, can not reach radiating effect and easily cause contact insufficient, and the inhomogeneous local temperature that also can make light fixture of dispelling the heat is too high and affect the life-span.

The utility model content

For the weak point that exists in the above-mentioned technology, the utility model provides a kind of simple in structure, good heat dissipation effect and the good LED aeronautical light of antiageing effect, can not produce the service life that high junction temperature affects LED because of the heat radiation adhesive.

For achieving the above object, the utility model provides a kind of LED aeronautical light, comprises LED lamp plate, copper base, aluminium base, lampshade and power supply; Described aluminium base is provided with a groove, be coated with nickel dam on the bottom of described groove, all be coated with tin cream on the two sides of described copper base, the one side of described copper base is by the tin cream of covering and the bottom welding of groove, tin cream and the LED lamp plate welding of the another side of described copper base by covering, described power supply is contained in the aluminium base and with the LED lamp plate and is electrically connected, and described lampshade is fixedly connected with aluminium base.

Wherein, described tin cream is the low temperature tin cream, and the fusing point of described low temperature tin cream is between 135 ℃-140 ℃.

Wherein, described LED aeronautical light also comprises water proof ring, and described water proof ring is clamped between lampshade and the aluminium base.

Wherein, described LED aeronautical light also comprises the installing rack of being convenient to install the LED aeronautical light; Described installing rack is fixedly connected with aluminium base.

Wherein, evenly be provided with a plurality of radiating fins on the described aluminium base.

The beneficial effects of the utility model are: compared with prior art, the LED aeronautical light that the utility model provides, all be coated with tin cream on the two sides of copper base, the one side of copper base is by the tin cream of covering and the bottom welding of groove, and the another side of copper base welds by tin cream and the LED lamp plate that covers; Aluminium base and the LED lamp plate that can not bear the high temperature reflux welding have effectively been protected; And directly weld heat conduction by copper base and aluminium base, simple in structure, good heat dissipation effect and antiageing effect are good, can not produce the service life that high junction temperature affects LED because of the heat radiation adhesive.

Description of drawings

Fig. 1 is the explosive view of LED aeronautical light of the present utility model;

Fig. 2 is the assembling assumption diagram of LED aeronautical light of the present utility model.

The main element symbol description is as follows:

1, LED lamp plate 2, copper base

3, aluminium base 4, lampshade

5, power supply 6, tin cream

7, water proof ring 8, installing rack

31, groove 32, radiating fin

The specific embodiment

In order more clearly to explain the utility model, below in conjunction with accompanying drawing the utility model is done to describe further.

See also Fig. 1-2, the LED aeronautical light that the utility model provides comprises LED lamp plate 1, copper base 2, aluminium base 3, lampshade 4 and power supply 5; Aluminium base 3 is provided with a groove 31, be coated with nickel dam on the bottom of groove 31, all be coated with tin cream 6 on the two sides of copper base 2, the one side of copper base 2 is by the tin cream 6 of covering and the bottom welding of groove 31, the tin cream 6 and LED lamp plate 1 welding of the another side of copper base 2 by covering, power supply 5 is contained in the aluminium base 3 and with LED lamp plate 1 and is electrically connected, and lampshade 4 is fixedly connected with aluminium base 3.

Situation compared to prior art, the LED aeronautical light that the present embodiment provides, all be coated with tin cream 6 on the two sides of copper base 2, the one side of copper base 2 is by the tin cream 6 of covering and the bottom welding of groove 31, and the another side of copper base 2 welds with LED lamp plate 1 by the tin cream 6 that covers; Aluminium base 3 and the LED lamp plate 1 that can not bear the high temperature reflux welding have effectively been protected; And directly weld heat conduction by copper base 2 and aluminium base 3, simple in structure, good heat dissipation effect and antiageing effect are good, can not produce the service life that high junction temperature affects LED because of the adhesive that dispels the heat.

In the present embodiment, tin cream 6 is the low temperature tin cream, the fusing point of this low temperature tin cream between 135 ℃-140 ℃ and the thickness of low temperature tin cream be 0.2-0.6mm.Certainly; the utility model is not limited to thickness, fusing point and the material of tin cream; so long as weld with the aluminium base of nickel coating and the embodiment of copper base by tin cream; can guarantee that the fusing point of low temperature tin cream is between 135 ℃-140 ℃; all belong to simple deformation of the present utility model or conversion, fall into protection domain of the present utility model.

In the present embodiment, the LED aeronautical light also comprises water proof ring 7, water proof ring 7 is clamped between lampshade 4 and the aluminium base 3, because the LED aeronautical light be open-air in use, increased water proof ring 7, can prevent effectively that rainwater or mist of oil etc. from entering in lampshade 4 and the aluminium base 3, and affect the service life of LED lamp plate 1.

In the present embodiment, the LED aeronautical light also comprises the installing rack 8 of being convenient to install the LED aeronautical light; Installing rack 8 is fixedly connected with aluminium base 3; installing rack 8 is mainly used in installing the LED aeronautical light; certainly; the utility model is not limited to the embodiment that adopts installing rack 8 that the LED aeronautical light is installed; can also be to adopt other modes such as jump ring or fixed mount that the LED aeronautical light is installed; if to the change of LED aeronautical light mounting means, all belong to simple deformation of the present utility model or conversion, fall into protection domain of the present utility model.

In the present embodiment, evenly be provided with a plurality of radiating fins 32 on the aluminium base 3, radiating fin 32 mainly dispels the heat to power supply 5 and LED lamp plate 1, has further improved the radiating effect of LED aeronautical light.

The brief introduction of low temperature tin cream: fusing point is that the tin cream between 135 ℃-140 ℃ is called as the low temperature tin cream; when the components and parts of paster can't bear 140 ℃ and above temperature and need the paster reflux technique; use the low temperature tin cream to carry out welding procedure; play protection and can not bear high temperature reflux welding LED lamp plate 1, aluminium base 3 and PCB etc.; welcome by the LED industry, its alloying component is sn-bi alloy.The low temperature tin cream has following characteristics: meet the RoHS standard fully; Have good printing, eliminate the omission depression in the printing process and tie fast phenomenon; Wetability is good, and the solder joint light is evenly full; Produce without tin sweat(ing) and Xi Qiao during reflow; In the long-term stickup life-span, the steel mesh printing life-span is long; Be fit to wider manufacturing process and quick print; The low temperature tin cream is mainly used in the welding of radiator module, LED welding, high-frequency welding etc.In a word, the utility model welds LED lamp plate 1 and aluminium base 3 respectively by the low temperature tin cream with copper base 2, effectively protected aluminium base 3 and the LED lamp plate 1 that can not bear the high temperature reflux welding.

Above disclosed only be several specific embodiment of the present utility model, but the utility model is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection domain of the present utility model.

Claims

1. a LED aeronautical light is characterized in that, comprises LED lamp plate, copper base, aluminium base, lampshade and power supply; Described aluminium base is provided with a groove, be coated with nickel dam on the bottom of described groove, all be coated with tin cream on the two sides of described copper base, the one side of described copper base is by the tin cream of covering and the bottom welding of groove, tin cream and the LED lamp plate welding of the another side of described copper base by covering, described power supply is contained in the aluminium base and with the LED lamp plate and is electrically connected, and described lampshade is fixedly connected with aluminium base.

2. LED aeronautical light according to claim 1 is characterized in that, described tin cream is the low temperature tin cream, and the fusing point of described low temperature tin cream is between 135 ℃-140 ℃.

3. LED aeronautical light according to claim 1 and 2 is characterized in that, described LED aeronautical light also comprises water proof ring, and described water proof ring is clamped between lampshade and the aluminium base.

4. LED aeronautical light according to claim 3 is characterized in that, described LED aeronautical light also comprises the installing rack of being convenient to install the LED aeronautical light; Described installing rack is fixedly connected with aluminium base.

5. LED aeronautical light according to claim 1 is characterized in that, evenly is provided with a plurality of radiating fins on the described aluminium base.