CN109506213B - A stamped lamp housing - Google Patents

Abstract

The invention discloses a stamping-formed lamp housing, which relates to the technical field of lighting devices. Riveting and fixing, the maximum diagonal length of the cross section of the riveting boss is 2.0mm-4.0mm, the shell of the lamp of the present invention is stamped and formed, the manufacturing efficiency is greatly improved, and thus the cost and energy consumption are reduced, and The heat conduction performance of the lamp shell is better; the small lamp board can be directly positioned with the riveting boss and fixed on the bottom plate, without the need for other fasteners to fix the lamp board, the installation is simple, convenient and fast; when the large lamp board is installed , the riveting boss can play the role of rapid positioning and preliminary riveting and fixing, and then through several blind holes punched and stretched on the bottom plate, the light board is installed on the fixed bottom plate, which can ensure the strength of the boss and the stability of the light board installation. It can also ensure the heat dissipation effect of the lamp board.

Description

A stamped lamp housing

technical field

The present invention relates to the technical field of lighting devices, in particular to a stamped and formed lamp housing.

Background technique

In the field of lighting equipment, the requirements for the assembly and heat dissipation of lamps are constantly improving, but the existing lamps have the phenomenon of bulging in the middle of the shell during assembly, which reduces the contact area between the lamp board and the shell, and cannot dissipate heat well; and When the lamp board is installed on the shell through the round hole type screw hole, the lamp board is prone to loosening, the assembly effect is poor, and the assembly efficiency is low; at the same time, most of the existing lamp shells are made of die-casting castings, although the castings can Casting into various structures and shapes according to the needs, but the production efficiency of castings is lower, the cost is higher than that of stamping parts, and the heat dissipation effect of castings is poor. The method of the shell is often welding or bonding, which reduces the work efficiency on the one hand, and on the other hand, there are disadvantages such as weak fixing, complicated and unsafe installation process.

For example, Chinese invention patent CN104949082A discloses an LED lamp radiator cover, which includes a circular flat cover, with screw holes on the cover, an upward flange on the edge of the cover, and a screw hole with a flip On the basis of the round hole type screw hole before improvement, the screw hole is stretched to form a raised turning structure on the radiator cover; the LED lamp radiator cover of this invention patent passes through the screw hole It is more complicated to fix the small light board, and the efficiency is low, and the nut will occupy a large position, which will affect the light efficiency.

Another example is a blind hole riveting structure of an aluminum plate fixing stud disclosed in Chinese utility model patent CN202097351U. The thickness of the aluminum plate used is greater than or equal to 1.5mm. First, a circular blind hole is processed on the back of the aluminum plate. The bottom of the blind hole is flat. The fixed stud is made of cylindrical aluminum material, and the bottom is flat. There is a circle at the bottom of the outer side of the fixed stud. groove, there is a round hole in the middle of the punch, there is a raised edge around the round hole, and there is a chamfer inside the edge. Put the fixing stud into the blind hole of the aluminum plate, and then put the round hole of the punch on the fixing stud. Then punch the punch, so that the raised edge part in the middle of the punch is completely squeezed into the aluminum plate, and the aluminum material around the blind hole of the aluminum plate is squeezed into the groove of the fixed stud, and the edge of the punch round hole is inverted. The corner makes the extruded edge of the blind hole of the aluminum plate into a conical shape, and the blind hole riveting structure of the stud of the utility model is not suitable for fixing the lamp body shell.

SUMMARY OF THE INVENTION

Aiming at the above-mentioned defects in the prior art, the present invention provides a stamping-molded lamp housing with high production efficiency and easy installation of the lamp board, which solves the problems of low production efficiency and high cost of the lamp housing, and also improves the The problem of low assembling efficiency and easy loosening of the lamp housing in the process of assembling with the lamp board is solved, and the problem of poor heat dissipation effect of the existing lamp housing can be further solved.

In order to solve the above problems, a stamped and formed lamp housing is provided. The lamp housing includes a bottom plate, and the bottom plate has a stamped and inwardly protruding riveting boss, and the riveting boss is used for positioning and/or positioning of the lamp board. Or riveted and fixed, the maximum diagonal length of the cross section of the riveted boss is 2.0mm-4.0mm, and the height of the riveted boss is not greater than the thickness of the bottom plate.

The above-mentioned lamp board refers to a circuit board provided with electronic components such as LED lamp tubes, circuits, resistors and capacitors, and is installed in the lamp housing as the light-emitting unit of the lamp. The function of the riveting boss can be to simply position the lamp panel, or simply riveted to fix the lamp panel, or both functions at the same time.

The cross-section of the riveting boss is preferably circular, or it can be square or other irregular shapes. The connecting line between the two points with the largest distance on the cross-section is the largest diagonal line. After a lot of tests, it is found that, such as If the maximum diagonal length L of the cross section of the riveting boss is too small, the strength of the riveting boss cannot meet the needs of installation, and it is easy to be bent and cannot fix or locate the lamp panel. The punching needles matched with the table will also be relatively thin, so the punching needles are easy to be broken and replaced frequently during the punching process, which directly affects the manufacturing efficiency and cost of the lamp housing; if the above-mentioned maximum diagonal length is too large, it will be In the process of forming the riveting boss, when the bottom plate is punched and stretched by the punching needle, a significant transition arc α will be formed at the junction of the side peripheral surface of the riveting boss and the inner wall of the bottom plate. When the through hole is riveted on the boss, the excessive arc that exists obviously will block the through hole on the lamp board gradually when the lamp board gradually approaches the inner wall of the bottom plate of the lamp housing, thus causing the lamp board It cannot be closely fitted with the bottom plate of the lamp housing and an obvious gap is formed between the two. The gap between the two is h3, so the lamp board riveted on the boss is easy to loosen. More seriously, the lamp board is working. The generated heat cannot be quickly conducted to the bottom plate of the housing for effective heat dissipation, thereby seriously affecting the life and safety of the lamp. Therefore, no matter what shape the riveting boss cross section is, the maximum diagonal length of the riveting boss should be controlled within a very suitable and precise range. The present invention locks the maximum diagonal length of the riveting boss cross section at 2.0mm to 4.0mm. Within the range, that is, greater than or equal to 2mm and less than or equal to 4.0mm, within this value range, good technical effects can be produced: it can not only meet the strength requirements of the riveting boss on the bottom plate of the lamp housing, and make it fully functional. To fix and/or position the lamp board, it also avoids the phenomenon that the punch matched with the riveting boss is easily broken and replaced frequently; more importantly, the maximum diagonal length of the cross section of the riveting boss is set at Within the range of this value, when the bottom plate of the casing is punched and stretched by the punching needle, it is easy to form a right angle at the junction of the side peripheral surface of the riveting boss and the inner wall of the bottom plate, or even a transition arc will be formed. α is very inconspicuous and will not form a significant transition arc α, which effectively overcomes the technical defects that the lamp board and the inner wall of the bottom plate of the housing cannot be closely attached, which leads to poor heat dissipation and easy loosening of the lamp board. longer life and safety, and more convenient assembly.

In the present invention, because the shell of the lamp and the riveting boss are stamped and formed, in order to ensure the strength of the riveting boss itself and its connection with the bottom plate, the height of the riveting boss should not be greater than the thickness of the bottom plate. If it is designed to be larger than the thickness of the bottom plate, the joint part between the riveting boss and the bottom plate is likely to be cracked during the stamping and forming process, so that the riveting boss will lose its function, and it will not be able to play a waterproof role, so that the interior of the lamp is easy to enter water.

As a better choice, the joint between the side peripheral surface of the riveting boss and the inner wall of the bottom plate is at right angles. This structure means that there is no transition arc α in the joint between the two, so when the lamp board passes through the When the through hole is riveted on the riveting boss, the lamp board can be closely attached to the bottom plate of the shell without any obstacles, so that the heat generated by the lamp board during operation will be directly conducted to the bottom plate of the shell for effective heat dissipation, and at the same time , the light board is attached to the bottom plate of the casing, making the installation more compact and convenient, and the light board will not loosen.

Of course, in actual production, it is sometimes difficult to require that the junction between the side peripheral surface of the riveting boss and the inner wall of the bottom plate is at a right angle, or because of insufficient process accuracy or unavoidable errors in production, the riveting boss side peripheral surface There is a transition arc α at the joint with the inner wall of the bottom plate. At this time, the radius of the arc should be as small as possible. A large number of experiments show that when the radius r of the arc is not greater than 0.3mm, the transition arc α is not Obviously, the light board can still be close to the bottom plate of the housing to the greatest extent, and the heat dissipation of the light board is not affected much. If the radius r of the arc is greater than 0.3mm, the transition arc α exists significantly, and the lamp board cannot be close enough to the inner wall of the bottom plate of the shell to form a clear gap between the two, which will seriously affect the heat dissipation of the lamp board. Moreover, the lamp board is also easy to loosen after being installed on the housing. Therefore, as a preferred solution, when the junction between the side peripheral surface of the riveting boss and the inner wall of the bottom plate has a transition arc α, the radius r of the arc is not greater than 0.3 mm.

Further, the bottom plate also has a stamped, outwardly protruding blind hole for fixing the lamp board, and the hole diameter of the blind hole is φ2.2mm～φ3.2mm, that is, greater than or equal to 2.2mm and less than or equal to 3.2mm, the hole depth of the blind hole is not less than 2.9mm; the selection of the diameter and depth of the blind hole can effectively match the existing screws as standard parts, so that the lamp board can be further fixed on the lamp housing by screws. on the bottom plate. In addition, if the aperture of the blind hole is too large, the screws fastened to the lamp board will be too large, thereby affecting the effective area of the lamp board and the layout of the lamp board. If the aperture is too small, the screw will be smaller, and the difficulty in assembling the lamp will increase accordingly, so the preferred aperture is not less than 2.2mm.

Furthermore, the lamp housing further includes an eversion connecting portion located at the periphery of the bottom plate and integrally stamped and formed with the bottom plate, and a through hole is formed on the eversion connecting portion. There are two everted connecting parts, and the two everted connecting parts are oppositely arranged on both sides of the bottom plate of the casing. The function of the eversion connecting part is to facilitate the connection between the lamp housing and the external bracket. In the prior art, two connecting parts are welded on the side of the stamped lamp housing to connect with the external bracket, which increases the process, cost and operation risk. Therefore, compared with the prior art, the above external The arrangement of the flip connecting portion simplifies the manufacturing process of the connecting structure and improves the production efficiency and safety.

In addition, the shell material of the present invention is pure aluminum, preferably AL-1060 pure aluminum plate, which has the advantages of strong plasticity, excellent processing performance, and good thermal conductivity, and is suitable for punching out riveting bosses and blinds that meet the requirements. holes, and good heat dissipation.

Compared with the prior art, because the shell of the lamp is stamped and formed, the manufacturing efficiency of the lamp shell is greatly improved, and the cost and energy consumption are thus reduced, and the heat conduction of the lamp shell is greatly improved. Better performance; a number of riveting bosses are formed on the bottom plate by stamping and drawing, so that the small lamp board can be directly positioned with the riveting bosses and fixed on the bottom plate, and the installation is simple, convenient and fast; when large lamps need to be installed in the lamp housing When installing the board, the riveting boss can play the role of rapid positioning and preliminary riveting and fixing, and then install the light board on the fixed bottom board through a number of blind holes punched and stretched on the bottom board. Therefore, the setting of the riveting boss can play the role of quickly positioning the lamp panel and riveting or preliminary fixing. It is important that the maximum diagonal length of the cross section of the stamped riveting boss is limited within a precise numerical range , so as to not only ensure the strength of the boss and the stability of the installation of the light board, but also ensure that the light board and the bottom plate are closely fitted or very close, so that the heat dissipation effect of the light board is good, and the light board will not be loose. Therefore, the present invention can greatly improve the production efficiency of the lamp and the lamp housing, the installation of the lamp board on the housing becomes more convenient and stable, the heat dissipation effect and safety of the lamp board and the lamp are better, the service life is longer, and at the same time It also greatly reduces the production cost.

Description of drawings

Fig. 1 is the schematic diagram of the lamp housing of the present invention;

Fig. 2 is the schematic diagram of embodiment 3 with shell bracket of the present invention;

Fig. 3 is the sectional view of Fig. 1 of the present invention;

Fig. 4 is the enlarged view of part B in Fig. 3 of the present invention;

Fig. 5 is the enlarged view of the A part of the junction of the side peripheral surface of the riveting boss and the inner wall of the bottom plate at a right angle in Fig. 3 of the present invention;

FIG. 6 is a schematic diagram of the present invention for a street lamp lamp housing;

FIG. 7 is an enlarged view of part A with a transition arc α at the junction of the side peripheral surface of the riveting boss and the inner wall of the bottom plate in FIG. 3 of the present invention;

Figure 8 is an enlarged view of an obvious gap with a spacing h3 between the lamp board 1 and the housing bottom plate 2 when the radius r of the transition arc α at the junction of the side peripheral surface of the riveting boss and the inner wall of the bottom plate is greater than 0.3 mm;

FIG. 9 is a schematic view of the lamp panel being installed on the housing of the present invention;

10 is a schematic plan view of the riveting bosses 4 whose cross sections are respectively circular, quadrilateral and hexagonal, wherein L is the maximum diagonal length;

In the figure: 1 is the lamp board; 2 is the bottom plate; 3 is the side wall; 4 is the riveting boss; 5 is the blind hole; 6 is the eversion connecting part;

Detailed ways

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.

Example 1:

As shown in Figure 1, Figure 3, Figure 5, Figure 7, Figure 8 and Figure 10, a stamping-formed lamp housing according to Embodiment 1 of the present invention is formed, the housing is formed by stamping and stretching and integrally formed with a bottom plate 2 and a The side wall 3 and the bottom plate 2 are provided with a plurality of riveting bosses 4 which are integrally stamped and formed with the bottom plate 2. The riveting bosses 4 protrude into the casing, so that blind holes corresponding to the riveting bosses 4 are formed from the outside of the casing. . Several riveting bosses 4 are provided with different numbers according to the size of the housing. The riveting bosses 4 are used for positioning or riveting fixing of the lamp panel 1 , or for both positioning and riveting fixing. In specific implementation, the riveting bosses 4 can have different shapes. In this embodiment, a common cylinder is used. At this time, the cross-section of the riveting bosses 4 is circular, and the maximum diagonal length L of the cross-section of the riveting bosses 4 is The diameter of the circle should be controlled between 2.0mm and 4.0mm, and 2.8mm is selected in this embodiment. The height of the riveting boss 4 is 0.9 mm, which is less than the thickness of the bottom plate 2 by 1.0 mm. Under this size, the smooth processing of the riveting boss 4 and the good riveting effect can be ensured, and the side peripheral surface of the riveting boss 4 is perpendicular to the inner wall of the bottom plate 2, and the junction of the two is at a right angle, so when the lamp panel 1 passes over it When riveted on the riveting boss, the light plate 1 can be closely fitted with the bottom plate of the housing with almost no obstacles. In this way, the heat generated by the lamp panel 1 during operation will be directly conducted to the bottom plate of the casing for effective heat dissipation. At the same time, the lamp panel 1 is attached to the bottom plate of the casing to make the installation more compact and convenient, and the lamp panel 1 will not loose. When the cross section of the riveting boss 4 adopts a square or other geometric shape, for example, when a square is adopted, the maximum diagonal length of the cross section of the riveting boss 4 is between 2.0mm and 4.0mm. In Embodiment 1, a bottomed container is formed by a stamping and drawing process, and the container includes a bottom plate 2 and a side wall 3. During the specific production process, a stepped bottom plate 2 and a stepped side wall 3 can be formed, That is, the step drawing process is performed, and then the riveting boss 4 is formed by the stamping and drawing process.

When installing the small lamp panel 1 in the lamp body shell of this embodiment, the lamp panel 1 and the riveting boss 4 can be directly riveted together to complete the positioning and fixing, that is, the riveting boss 4 can play two functions of positioning and riveting and fixing. In this way, the installation of the lamp board 1 on the lamp housing is very simple and convenient, and at the same time, it has good heat dissipation effect, high production efficiency, and high installation and processing efficiency;

The shell material is AL-1060 pure aluminum plate, which has the advantage of excellent processing performance.

Example 2:

As shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 9, the difference between this embodiment and Embodiment 1 is that a number of blind holes 5 are also provided on the bottom plate 2, and the hole diameter of the blind holes 5 is φ2.2mm～ φ3.2mm, this embodiment is preferably 2.6mm; the hole depth of the blind hole 5 is not less than 2.9mm, this embodiment is preferably 3.5mm. The blind hole 5 is used for fixing the light board 1; the blind hole 5 is formed by stamping and drawing. When applied to the installation of the large light board 1, it is possible to fix the light board 1 only by riveting the boss 4, so the bottom plate 2 may fall off. A number of blind holes 5 are formed by punching and drawing on the upper part. The number of blind holes 5 is determined according to the size of the shell. After the lamp board 1 and the riveting boss 4 are riveted to complete the positioning and preliminary fixing, they are further installed by screws and blind holes. Fix the light board 1.

As shown in FIG. 6 , the housing of this embodiment can be used for common lamps such as various LED lamps and street lamps.

Example 3:

As shown in FIGS. 1 , 2 and 9 , in Embodiment 3, the periphery of the bottom plate 2 is provided with an eversion connecting portion 6 that is integrally stamped and formed with the bottom plate 2 , and the eversion connecting portion 6 is provided on the integrally formed side wall 3 , the eversion connecting part 6 is provided with a through hole, and the eversion connecting part 6 is used to install the shell bracket 7, that is, when the shell bracket needs to be installed, the eversion connecting part 6 formed by flanging is used for installation.

Two eversion connecting parts 6 are provided, and the two eversion connecting parts 6 are arranged oppositely on both sides of the casing; the eversion connecting parts 6 are formed by stamping and bending.

Example 4:

As shown in FIG. 7 , the difference between this embodiment and Embodiment 1 is that the maximum diagonal length of the cross section of the riveting boss 4 , that is, the diameter of its circular cross section is 3.2 mm. There is a transition arc α at the junction between the surface and the inner wall of the bottom plate 2. At this time, the radius of the arc α should be as small as possible. In this embodiment, the radius of the transition arc is 0.2 mm, so the transition arc α is not significant. Existing, the lamp panel 1 can still be close to the bottom plate of the housing to the greatest extent, and the heat dissipation of the lamp panel 1 is not greatly affected. As shown in Figure 8, if the radius of the arc is greater than 0.3mm, the transition arc α exists significantly, and the lamp board 1 cannot be close enough to the inner wall of the bottom plate 2 of the housing to form a clear gap between the two. The distance between them is h3, which will seriously affect the heat dissipation of the lamp panel 1, and the lamp panel 1 is easy to loosen after it is installed on the housing.

The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Those of ordinary skill in the relevant technical field can also make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all Equivalent technical solutions also belong to the scope of the present invention, and the patent protection scope of the present invention should be defined by the claims.

Claims (5)

1. The utility model provides a stamping forming's lamps and lanterns casing, includes bottom plate (2), its characterized in that, have stamping forming, inside bellied riveting boss (4) on bottom plate (2), riveting boss (4) are used for the location and/or the riveting of lamp plate to fix, the biggest diagonal length L of riveting boss (4) cross section is 2.0mm ~ 4.0mm, the height h1 of riveting boss (4) is not more than the thickness h2 of bottom plate (2); the joint of the side peripheral surface of the riveting boss (4) and the inner wall of the bottom plate (2) is provided with a transition circular arc alpha, and the radius r of the circular arc is not more than 0.3 mm;

the bottom plate (2) is also provided with a blind hole (5) which is formed by stamping and is convex outwards and used for fixing the lamp panel, and the diameter of the blind hole (5) is phi 2.2 mm-phi 3.2 mm.

2. The stamping and forming lamp housing according to claim 1, further comprising an outward-turning connecting part (6) which is located at the periphery of the bottom plate (2) and is integrally stamped and formed with the bottom plate (2), wherein a through hole is formed in the outward-turning connecting part (6).

3. Stamped and formed lamp housing according to claim 2, characterized in that the everting connections (6) are present in 2, 2 of the everting connections (6) being arranged opposite each other on both sides of the base plate (2).

4. The stamped and formed lamp housing according to claim 1, wherein the housing is made of pure aluminum.

5. The stamped light fixture housing of claim 1, wherein: the hole depth of the blind hole (5) is not less than 2.9 mm.

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