CN202281111U

CN202281111U - LED fluorescent tube

Info

Publication number: CN202281111U
Application number: CN2011204053103U
Authority: CN
Inventors: 熊念春; 张科印; 胡旭隆; 张宇; 王文杰
Original assignee: Shenzhen Kaifa Technology Co Ltd
Current assignee: Shenzhen Kaifa Technology Co Ltd
Priority date: 2011-10-21
Filing date: 2011-10-21
Publication date: 2012-06-20
Anticipated expiration: 2021-10-21

Abstract

The utility model provides an LED fluorescent tube comprising a light source substrate and a heat radiating base, wherein two edges of the light source substrate are inlaid in two horizontal clamping slots of the heat radiating base, and a heat transfer surface at the lower part of the light source substrate is in tight contact with a heat adsorption surface at the upper part of the heat radiating base. The upper surface of the edge of the light source substrate is also in tight contact with the inner surface of the upper edge of each clamping slot of the heat radiating base. A method for connecting the light source substrate and the heat radiating base comprises the following steps of: forming the horizontal clamping slots with opposite openings above two sides of the heat adsorption surface of the heat radiating base; placing the heat transfer surface at the lower part of the light source substrate towards the heat adsorption surface at the upper part of the heat radiating base, and inserting the light source substrate in the clamping slots of the heat radiating base; and squeezing and riveting the outer surfaces of the upper edges of the clamping slots of the heat radiating base to ensure that the heat transfer surface at the lower part of the light source substrate is in tight contact with the heat adsorption surface at the upper part of the heat radiating base through the slight deformation of the upper edges of the clamping slots. The LED fluorescent tube has the advantages of high production efficiency, small potential safety hazards and high heat-conducting property.

Description

A kind of LED fluorescent tube

Technical field

The utility model relates to lighting technical field, relates in particular to the LED light-emitting device, the radiator structure in a kind of LED of being applied in light-emitting device of more specifically saying so.

Background technology

At present, to LED fluorescent tube light source characteristic, heat dissipation design and the manufacturing technique requirent radiating effect during to light source works is particularly important.Also bigger to the more heat that produces of the light source of LED fluorescent tube own, if heat dissipation design and production technology are for then significantly reducing the service life of light source and the decay of function to the parameter that is not designed into its application in this respect.

The LED fluorescent tube improves radiating effect selecting generally to use the heat radiation main body of aluminium alloy as light fixture on the heat sink material with this for this reason.Add from the production technology aspect and consider, reach all fully heat radiations of each light source point, must light source be close on the heat radiation aluminium alloy for light source and heat radiation aluminium alloy are contacted fully.

On the LED industry, the common method that aluminium base is fixed on the heat radiation aluminium alloy has the screw of employing to fix, apply modes such as heat conduction bonded adhesives, stickup bond plies at present.

1. as adopt screw to fix, not only time-consuming during production, and loosening easily, like this to there being potential safety hazard, moreover heat-conducting effect neither be ideal, because must there be the air gap in the centre, causes bigger thermal contact resistance.

2. as adopt to apply heat-conducting cream etc., the heat-conducting cream price of better heat conductivity coefficient is more expensive on the one hand, and low thermal conductivity factor does not reach good heat-conducting effect again, applies this cream on the other hand and be suitable time-consuming.

The utility model content

The technical problem that the utility model will solve is: the deficiency to above-mentioned prior art exists provides the conductive structure between a kind of light source substrate and the cooling base.

The utility model is to address the above problem the technical scheme that proposes to be: a kind of LED fluorescent tube; Comprise light source substrate and cooling base; Two edges of this light source substrate are embedded in two horizontal draw-in grooves of cooling base, and the heat-transfer area of light source substrate bottom closely contacts with the heat-absorbent surface on cooling base top.The upper surface at light source substrate edge also closely contacts with the inner surface of the draw-in groove upper edge of cooling base.

Cooling base is an aluminium alloy extrusions, and light source substrate is an aluminium material.The top of light source substrate is welded with LED paster light source.The outer surface of cooling base draw-in groove upper edge leaves the vestige of squeezed riveting.

Compared with prior art, adopt the advantage of the technical scheme of the utility model to be.

1. assemble fairly simple, but manual compression riveted joint or automation squeezed riveting, production efficiency is high, can save production cost in a large number.

2. do not have detachability, avoided potential safety hazard.

3. two thermal conductive surfaces more fully contact, and have increased the area of heat conduction, have improved heat conductivility.

Description of drawings

Fig. 1 is the stereogram of the light source substrate 1 of the utility model embodiment.

Fig. 2 is the stereogram of the cooling base 2 of the utility model embodiment.

Fig. 3 is the cross section cutaway view of Fig. 2.

Fig. 4 is the stereogram that the light source substrate 1 edge 1A of the utility model embodiment inserts cooling base 2 draw-in grooves.

Fig. 5 is the stereogram after the utility model embodiment roll forming.

Fig. 6 is the cross section cutaway view of Fig. 5.

Fig. 7 is the partial enlarged drawing of Fig. 5.

The specific embodiment

In order to make those skilled in the art person understand the technical scheme of the utility model better, do further detailed description below in conjunction with accompanying drawing and embodiment.

The light source substrate 1 of the utility model embodiment shown in Figure 1 is an aluminium material, and heat-transfer area 1B is in its underpart, and 3 welding of LED paster light source at an upper portion thereof.The cooling base 2 of Fig. 2, the utility model embodiment shown in Figure 3 is an aluminium alloy extrusions, and the top of its heat-absorbent surface 2B both sides, top forms opening opposing horizontal draw-in groove 1A.

As shown in Figure 4, with two edge 1A of aluminium matter light source substrate 1, in the horizontal draw-in groove 2A of the cooling base 2 that the insertion aluminium alloy extrusions is processed, the heat-transfer area 1B of light source substrate 1 bottom is towards the heat-absorbent surface 2B on cooling base 2 tops.

In the making of light source substrate 1 and cooling base 2; Spatial altitude size in the cooling base 2 draw-in groove 2A is slightly larger than the gauge of light source substrate 1 edge 1A; Edge 1A leaves the clearance space of a little in the draw-in groove 1A that packs into the time, and being convenient to light source substrate 1 like this can be inserted in the cooling base 2 like a cork.

Through the special single lead screw ex truding briquetting machine of technological design for this reason, the outer surface of extruding cooling base 2 draw-in groove 1A upper edges is embedded in two horizontal draw-in groove 1A of cooling base 21 two edge 1A of light source substrate then.Through local extruding, be riveted together, between the two with reference to figure 5, Fig. 6.Pass through the slight deformation of draw-in groove 1A upper edge like this; The heat-transfer area 1B that reaches light source substrate 1 bottom and the heat-absorbent surface 2B on cooling base 2 tops can be cmpletely tight the contact, increased effective heat-conducting area, so just can reach extraordinary radiating effect; And can not become flexible, non-deformable.

In addition, single lead screw ex truding briquetting machine can be regulated needed extruding dynamics according to the size of cooling base aluminium alloy extrusions and the degree of tightness of needs riveted joint.When dynamics was big, the upper surface of light source substrate 1 edge 1A also can closely contact with the inner surface of the draw-in groove 1A upper edge of cooling base 2.This type of utility model is that disposable riveting molding is difficult for demolition, and need could demolition after destroying aluminium alloy extrusions.

Squeezed riveting can be adopted the roll extrusion riveted joint or the riveted joint of roll extrusion manually of single lead screw ex truding briquetting machine.The outer surface of cooling base 1 draw-in groove 1A upper edge leaves the vestige 1C of squeezed riveting after the roll extrusion, undaform striped as shown in Figure 7, but do not influence the appearance requirement of product.

The light source substrate 1 of this kind LED fluorescent tube and the method for attachment of cooling base 2 have replaced aluminium alloy extrusions and aluminium base and when being connected, have adopted the normally used glue of beating perhaps to screw and wait the connected mode of other patterns.

Benefit when it uses the method has: simple, easy to operate during this utility model assembling, but manual compression riveted joint or automation squeezed riveting can realize the mechanization production in enormous quantities, enhance productivity greatly.Than playing glue or locking other patterns such as screw and save time, appearance surfaces is prone to cleaning, and is indeformable and rivet fastening not fragile.

This squeezed riveting has can not demolition property, dismantle must destroy the heat radiation aluminium section bar can demolition, I guarantee the safe in utilization of user like this, avoid the user to have and get an electric shock or loosening other potential safety hazards brought of aluminium base.

Can improve the heat-conducting effect of system after this technology utility model, aluminium base with the heat radiation aluminium section bar through squeezed riveting after, these two thermal conductive surfaces of heat-transfer area 1B and heat-absorbent surface 2B are more fully contacted, increased the area of heat conduction, improved heat conductivility.

Foregoing is merely the preferred embodiment of the utility model, is not the utility model is carried out the scope restriction.Those skilled in the art can carry out corresponding flexible or modification very easily according to the main design and the spirit of the utility model.So the protection domain of the utility model should be as the criterion with the covering scope of claim.

Claims

1. LED fluorescent tube; Comprise: light source substrate (1) and cooling base (2); It is characterized in that; Two edges (1A) of this light source substrate (1) are embedded in two horizontal draw-in grooves (1A) of cooling base (2), and the heat-transfer area (1B) of light source substrate (1) bottom closely contacts with the heat-absorbent surface (2B) on cooling base (2) top.

2. according to the described LED fluorescent tube of claim 1, it is characterized in that the upper surface at said light source substrate (1) edge (1A) closely contacts with the inner surface of draw-in groove (1A) upper edge of cooling base (2).

3. according to the described LED fluorescent tube of claim 2, it is characterized in that said cooling base (2) is an aluminium alloy extrusions.

4. according to the described LED fluorescent tube of claim 2, it is characterized in that said light source substrate (1) is an aluminium material.

5. according to the described LED fluorescent tube of claim 2, it is characterized in that the top of said light source substrate (1) is welded with LED paster light source (3).

6. according to the described LED fluorescent tube of claim 2, it is characterized in that the outer surface of said cooling base (2) draw-in groove (1A) upper edge leaves the vestige (1C) of squeezed riveting.