Projection lamp shell and production process thereof

Abstract

The invention relates to the technical field of project lamps, and particularly discloses a project lamp shell and a production process thereof.The project lamp shell comprises a colored drawing spraying iron plate, a lower EVA adhesive film is laid on the top of the colored drawing spraying iron plate, a copper foil insulating layer is laid on the top of the lower EVA adhesive film, and a copper foil circuit board is installed on the top of the copper foil insulating layer; the top of the copper foil circuit board is provided with a plurality of light-emitting lamp beads and electronic accessories, the top of the copper foil circuit board is covered with an upper EVA adhesive film, and the top of the upper EVA adhesive film is covered with a PET adhesive film. The light reflecting function of the colored drawing spraying iron plate is utilized, light of the projection lamp is scattered to the periphery more evenly, and the lighting effect is improved; meanwhile, by means of the light transmitting function of the lower EVA adhesive film and the copper foil insulating layer, light reflected by the colored drawing spraying iron plate is more easily projected out of the interior of the projection lamp and cannot be absorbed by a shell of the projection lamp, the lighting effect is improved, and the upper EVA adhesive film is further beneficial to illumination emitted by the light-emitting lamp beads to the outside.

Description

Technical Field

[0001] The invention relates to the technical field of floodlights, and in particular to a floodlight housing and a production process thereof. Background Art

[0002] A floodlight is a lamp with a higher illuminance on the designated illuminated surface than the surrounding environment. It is also called a spotlight. Usually, it can be aimed in any direction and has a structure that is not affected by climatic conditions. It is mainly used in large-scale work sites and mines, building outlines, stadiums, overpasses, monuments, parks and flower beds. Therefore, almost all large-area lighting fixtures used outdoors can be regarded as floodlights. The angle of the output beam of a floodlight can be wide or narrow, ranging from 0° to 180°. The one with a particularly narrow beam is called a searchlight.

[0003] Floodlights are widely used in modern society. The housing is an important part of the floodlight. The housing is mainly used as the outer protection of the lighting components of the floodlight. During the lighting of the lighting components, part of the reflected light will be absorbed by the housing, reducing the lighting range of the floodlight. Therefore, in order to solve such problems, we propose a floodlight housing and its production process. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a floodlight housing and a production process thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A floodlight housing comprises a painted spray-coated iron plate, a lower EVA film is laid on the top of the painted spray-coated iron plate, a copper foil insulating layer is laid on the top of the lower EVA film, a copper foil circuit board is installed on the top of the copper foil insulating layer, a plurality of light-emitting lamp beads and electronic accessories are respectively installed on the top of the copper foil circuit board, the top of the copper foil circuit board is covered with an upper EVA film, and the top of the upper EVA film is covered with a PET film.

[0007] Preferably, the lower EVA film and the upper EVA film are the same in size and thickness.

[0008] Preferably, the copper foil insulation layer is an insulating adhesive, and the copper foil insulation layer evenly covers the top of the lower EVA adhesive film.

[0009] Preferably, a plurality of light-emitting lamp beads and a plurality of electronic accessories are evenly distributed on the top of the copper foil circuit board.

[0010] A production process for a floodlight housing, the production process comprising the floodlight housing of claims 1 to 4 above, and the production process further comprising the following steps:

[0011] Step 1: According to the size of the painted spray iron plate, cut an EVA film of appropriate size and cover it on the top of the painted spray iron plate; then heat the painted spray iron plate to 135-140℃ and keep it warm for 15-20min, and then cool it down naturally after the end of the insulation;

[0012] Step 2: After the temperature of the painted spray iron plate drops to 50-60℃, evenly apply a layer of insulating glue on the top of the EVA film, and the thickness of the insulating glue is 2-3mm; place the circuit board with lamp beads and electronic components on the insulating glue;

[0013] Step 3: Cover the top of the circuit board with a layer of EVA film, and then cover the top of the EVA film with a layer of PET film to obtain a semi-finished product of the floodlight housing;

[0014] Step 4: Select the corresponding stamping die according to the size of the semi-finished product of the floodlight housing. After the stamping die is installed on the punch press, the semi-finished product of the floodlight housing is installed on the stamping die. Through the impact of the punch press and with the cooperation of the stamping die, the finished product of the floodlight housing is obtained;

[0015] Step 5: Get the finished floodlight housing, remove it, trim its edges and remove burrs.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention uses a painted spray iron plate, a lower EVA film, a copper foil insulating layer and an upper EVA film in combination, and utilizes the reflective function of the painted spray iron plate to allow the light of the floodlight to be more evenly scattered around, thereby improving the lighting effect; at the same time, utilizing the light-transmitting function of the lower EVA film and the copper foil insulating layer, the light reflected by the painted spray iron plate is more easily projected from the inside of the floodlight, and the light will not be absorbed by the floodlight housing, thereby improving the lighting effect, and further, the upper EVA film is conducive to the light emitted by the luminous lamp beads to the outside world. Furthermore, by using the painted spray iron plate, there is no need to spray the painting after the floodlight housing is formed, thereby avoiding affecting the luminous lamp beads. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an axonometric diagram of the structure of the present invention.

[0019] In the picture: 1. Painted spray-coated iron plate; 2. Lower EVA film; 3. Copper foil insulation layer; 4. Luminous lamp beads; 5. Electronic accessories; 6. Copper foil circuit board; 7. Upper EVA film; 8. PET film. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] See also Figure 1 A floodlight housing comprises a painted spray-coated iron plate 1, a lower EVA film 2 is laid on the top of the painted spray-coated iron plate 1, a copper foil insulating layer 3 is laid on the top of the lower EVA film 2, a copper foil circuit board 6 is installed on the top of the copper foil insulating layer 3, a plurality of light-emitting lamp beads 4 and electronic accessories 5 are respectively installed on the top of the copper foil circuit board 6, the top of the copper foil circuit board 6 is covered with an upper EVA film 7, and the top of the upper EVA film 7 is covered with a PET film 8.

[0022] As a technical optimization solution of the present invention, the lower EVA film 2 and the upper EVA film 7 are the same in size and thickness.

[0023] As a technical optimization solution of the present invention, the copper foil insulation layer 3 is an insulation glue, and the copper foil insulation layer 3 evenly covers the top of the lower EVA film 2; the copper foil insulation layer 3 is an epoxy resin glue, and the epoxy resin glue has good insulation performance after curing, and its insulation strength is very high, which can resist high-voltage electric shock and prevent breakdown. At the same time, it has a high light transmittance, and the light transmittance is between 80-90%.

[0024] As a technical optimization solution of the present invention, a plurality of light-emitting lamp beads 4 and a plurality of electronic accessories 5 are evenly distributed on the top of the copper foil circuit board 6 .

[0025] A production process for a floodlight housing, the production process comprising the floodlight housing of claims 1 to 4 above, and the production process further comprising the following steps:

[0026] Step 1: According to the size of the painted spray iron plate 1, cut an EVA film of appropriate size and cover it on the top of the painted spray iron plate 1; then heat the painted spray iron plate 1 to raise its temperature to 135-140°C and keep it warm for 15-20 minutes, and then cool it down naturally after the insulation ends;

[0027] Step 2: After the temperature of the painted spray iron plate 1 drops to 50-60°C, evenly apply a layer of insulating glue on the top of the EVA film, and the thickness of the insulating glue is 2-3mm; place the circuit board with lamp beads and electronic components on the insulating glue;

[0028] Step 3: Cover the top of the circuit board with a layer of EVA film, and then cover the top of the EVA film with a layer of PET film to obtain a semi-finished product of the floodlight housing; the EVA film has a light transmittance greater than 90%, and has good durability to resist high temperature, moisture and ultraviolet rays; the PET film is a packaging film with relatively comprehensive performance, with good transparency, gloss and good air tightness. The PET film also has excellent heat resistance, cold resistance, good chemical resistance and oil resistance.

[0029] Step 4: Select the corresponding stamping die according to the size of the semi-finished product of the floodlight housing. After the stamping die is installed on the punch press, the semi-finished product of the floodlight housing is installed on the stamping die. Through the impact of the punch press and with the cooperation of the stamping die, the finished product of the floodlight housing is obtained;

[0030] Step 5: Get the finished floodlight housing, remove it, trim its edges and remove burrs.

[0031] Embodiment 1:

[0032] A floodlight housing comprises a painted spray-coated iron plate 1, a lower EVA film 2 is laid on the top of the painted spray-coated iron plate 1, a copper foil insulating layer 3 is laid on the top of the lower EVA film 2, a copper foil circuit board 6 is installed on the top of the copper foil insulating layer 3, a plurality of light-emitting lamp beads 4 and electronic accessories 5 are respectively installed on the top of the copper foil circuit board 6, an upper EVA film 7 is covered on the top of the copper foil circuit board 6, and a PET film 8 is covered on the top of the upper EVA film 7.

[0033] As a technical optimization solution of the present invention, the lower EVA film 2 and the upper EVA film 7 are the same in size and thickness.

[0034] As a technical optimization solution of the present invention, the copper foil insulation layer 3 is an insulation glue, and the copper foil insulation layer 3 evenly covers the top of the lower EVA film 2; the copper foil insulation layer 3 is an epoxy resin glue, and the epoxy resin glue has good insulation performance after curing, and its insulation strength is very high, which can resist high-voltage electric shock and prevent breakdown. At the same time, it has a higher light transmittance, and the light transmittance is between 80%.

[0035] As a technical optimization solution of the present invention, a plurality of light-emitting lamp beads 4 and a plurality of electronic accessories 5 are evenly distributed on the top of the copper foil circuit board 6 .

[0036] A production process for a floodlight housing, the production process comprising the floodlight housing of claims 1 to 4 above, and the production process further comprising the following steps:

[0037] Step 1: According to the size of the painted spray iron plate 1, cut an EVA film of appropriate size and cover it on the top of the painted spray iron plate 1; then heat the painted spray iron plate 1 to raise its temperature to 135°C and keep it warm for 15 minutes, and then cool it down naturally after the end of the heat preservation;

[0038] Step 2: After the temperature of the painted spray iron plate 1 drops to 50°C, evenly apply a layer of insulating glue on the top of the EVA film, and the thickness of the insulating glue is 2mm; place the circuit board with the lamp beads and electronic components installed on the insulating glue;

[0039] Step 3: Cover the top of the circuit board with a layer of EVA film, and then cover the top of the EVA film with a layer of PET film to obtain a semi-finished product of the floodlight housing; the EVA film has a light transmittance greater than 90%, and has good durability to resist high temperature, moisture and ultraviolet rays; the PET film is a packaging film with relatively comprehensive performance, with good transparency, gloss and good air tightness. The PET film also has excellent heat resistance, cold resistance, good chemical resistance and oil resistance.

[0040] Step 4: Select the corresponding stamping die according to the size of the semi-finished product of the floodlight housing. After the stamping die is installed on the punch press, the semi-finished product of the floodlight housing is installed on the stamping die. Through the impact of the punch press and with the cooperation of the stamping die, the finished product of the floodlight housing is obtained;

[0041] Step 5: Get the finished floodlight housing, remove it, trim its edges and remove burrs.

[0042] Embodiment 2:

[0043] A floodlight housing comprises a painted spray-coated iron plate 1, a lower EVA film 2 is laid on the top of the painted spray-coated iron plate 1, a copper foil insulating layer 3 is laid on the top of the lower EVA film 2, a copper foil circuit board 6 is installed on the top of the copper foil insulating layer 3, a plurality of light-emitting lamp beads 4 and electronic accessories 5 are respectively installed on the top of the copper foil circuit board 6, an upper EVA film 7 is covered on the top of the copper foil circuit board 6, and a PET film 8 is covered on the top of the upper EVA film 7.

[0044] As a technical optimization solution of the present invention, the lower EVA film 2 and the upper EVA film 7 are the same in size and thickness.

[0045] As a technical optimization solution of the present invention, the copper foil insulation layer 3 is an insulating glue, and the copper foil insulation layer 3 evenly covers the top of the lower EVA film 2; the copper foil insulation layer 3 is an epoxy resin glue, and the epoxy resin glue has good insulation properties after curing, and its insulation strength is very high, which can resist high-voltage electric shock and prevent breakdown. At the same time, it has a higher light transmittance, and the light transmittance is between 85%.

[0046] As a technical optimization solution of the present invention, a plurality of light-emitting lamp beads 4 and a plurality of electronic accessories 5 are evenly distributed on the top of the copper foil circuit board 6 .

[0047] A production process for a floodlight housing, the production process comprising the floodlight housing of claims 1 to 4 above, and the production process further comprising the following steps:

[0048] Step 1: According to the size of the painted spray iron plate 1, cut an EVA film of appropriate size and cover it on the top of the painted spray iron plate 1; then heat the painted spray iron plate 1 to raise its temperature to 137°C and keep it warm for 17 minutes, and then cool it down naturally after the end of the heat preservation;

[0049] Step 2: After the temperature of the painted spray iron plate 1 drops to 55°C, evenly apply a layer of insulating glue on the top of the EVA film, and the thickness of the insulating glue is 2.5mm; place the circuit board with the lamp beads and electronic components installed on the insulating glue;

[0050] Step 3: Cover the top of the circuit board with a layer of EVA film, and then cover the top of the EVA film with a layer of PET film to obtain a semi-finished product of the floodlight housing; the EVA film has a light transmittance greater than 90%, and has good durability to resist high temperature, moisture and ultraviolet rays; the PET film is a packaging film with relatively comprehensive performance, with good transparency, gloss and good air tightness. The PET film also has excellent heat resistance, cold resistance, good chemical resistance and oil resistance.

[0051] Step 4: Select the corresponding stamping die according to the size of the semi-finished product of the floodlight housing. After the stamping die is installed on the punch press, the semi-finished product of the floodlight housing is installed on the stamping die. Through the impact of the punch press and with the cooperation of the stamping die, the finished product of the floodlight housing is obtained;

[0052] Step 5: Get the finished floodlight housing, remove it, trim its edges and remove burrs.

[0053] Embodiment three:

[0054] A floodlight housing comprises a painted spray-coated iron plate 1, a lower EVA film 2 is laid on the top of the painted spray-coated iron plate 1, a copper foil insulating layer 3 is laid on the top of the lower EVA film 2, a copper foil circuit board 6 is installed on the top of the copper foil insulating layer 3, a plurality of light-emitting lamp beads 4 and electronic accessories 5 are respectively installed on the top of the copper foil circuit board 6, an upper EVA film 7 is covered on the top of the copper foil circuit board 6, and a PET film 8 is covered on the top of the upper EVA film 7.

[0055] As a technical optimization solution of the present invention, the lower EVA film 2 and the upper EVA film 7 are the same in size and thickness.

[0056] As a technical optimization solution of the present invention, the copper foil insulation layer 3 is an insulation glue, and the copper foil insulation layer 3 evenly covers the top of the lower EVA film 2; the copper foil insulation layer 3 is an epoxy resin glue, and the epoxy resin glue has good insulation performance after curing, and its insulation strength is very high, which can resist high-voltage electric shock and prevent breakdown. At the same time, it has a higher light transmittance, and the light transmittance is between 90%.

[0057] As a technical optimization solution of the present invention, a plurality of light-emitting lamp beads 4 and a plurality of electronic accessories 5 are evenly distributed on the top of the copper foil circuit board 6 .

[0058] A production process for a floodlight housing, the production process comprising the floodlight housing of claims 1 to 4 above, and the production process further comprising the following steps:

[0059] Step 1: According to the size of the painted spray iron plate 1, cut an EVA film of appropriate size and cover it on the top of the painted spray iron plate 1; then heat the painted spray iron plate 1 to raise its temperature to 140°C and keep it warm for 20 minutes, and then cool it down naturally after the end of the insulation;

[0060] Step 2: After the temperature of the painted spray iron plate 1 drops to 60°C, evenly apply a layer of insulating glue on the top of the EVA film, and the thickness of the insulating glue is 3mm; place the circuit board with the lamp beads and electronic components installed on the insulating glue;

[0061] Step 3: Cover the top of the circuit board with a layer of EVA film, and then cover the top of the EVA film with a layer of PET film to obtain a semi-finished product of the floodlight housing; the EVA film has a light transmittance greater than 90%, and has good durability to resist high temperature, moisture and ultraviolet rays; the PET film is a packaging film with relatively comprehensive performance, with good transparency, gloss and good air tightness. The PET film also has excellent heat resistance, cold resistance, good chemical resistance and oil resistance.

[0062] Step 4: Select the corresponding stamping die according to the size of the semi-finished product of the floodlight housing. After the stamping die is installed on the punch press, the semi-finished product of the floodlight housing is installed on the stamping die. Through the impact of the punch press and with the cooperation of the stamping die, the finished product of the floodlight housing is obtained;

[0063] Step 5: Get the finished floodlight housing, remove it, trim its edges and remove burrs.

[0064] When the present invention is in use, the reflective function of the painted spray iron plate 1 is utilized to make the light of the floodlight more evenly scattered to the surroundings, thereby improving the lighting effect. Furthermore, if the painted spray iron plate 1 as a lampshade is not sprayed with paint, the light will directly shine on the human retina, causing discomfort to the eyes and even a glare. However, this situation can be alleviated after spraying with paint, making the light softer and not causing damage to the eyes. Furthermore, if there is no spray painting, the light will produce a lot of reflections and scattering, thereby affecting the lighting effect. However, spray painting can reduce the occurrence of this situation and improve the availability of light. At the same time, the light-transmitting function of the lower EVA film 2 and the copper foil insulating layer 3 is utilized to make the light reflected by the painted spray iron plate 1 easier to be projected from the inside of the floodlight, and the light will not be absorbed by the floodlight housing, which is conducive to the rapid dissipation of subsequent heat and also improves the lighting effect. Further, the upper EVA film 7 is conducive to the light emitted by the luminous lamp beads 4 to the outside world. Furthermore, by using the painted spray iron plate 1, there is no need to spray the paint after the projection lamp housing is formed, thereby avoiding affecting the light-emitting lamp beads 4. At the same time, after the painted spray iron plate 1 is stamped and formed, the light emitted by the light-emitting lamp beads 4 can be effectively restrained, without the need to use a lens or an aluminum substrate, thereby improving production efficiency.

[0065] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A floodlight housing, comprising a painted spray-coated iron plate (1), characterized in that: A lower EVA film (2) is laid on the top of the painted spray iron plate (1), a copper foil insulation layer (3) is laid on the top of the lower EVA film (2), a copper foil circuit board (6) is installed on the top of the copper foil insulation layer (3), a plurality of light-emitting lamp beads (4) and electronic accessories (5) are respectively installed on the top of the copper foil circuit board (6), the top of the copper foil circuit board (6) is covered with an upper EVA film (7), and the top of the upper EVA film (7) is covered with a PET film (8).

2. The floodlight housing according to claim 1, characterized in that: The lower EVA film (2) and the upper EVA film (7) are of the same size and thickness.

3. The floodlight housing according to claim 1, characterized in that: The copper foil insulation layer (3) is an insulation adhesive, and the copper foil insulation layer (3) evenly covers the top of the lower EVA adhesive film (2).

4. The floodlight housing according to claim 1, characterized in that: A plurality of light-emitting lamp beads (4) and a plurality of electronic accessories (5) are evenly distributed on the top of the copper foil circuit board (6).

5. A production process for a floodlight housing, characterized in that: The production process includes the floodlight housing of claims 1-4 above, and the production process also includes the following steps: Step 1: according to the size of the painted spray iron plate (1), cut an EVA film of appropriate size and cover the top of the painted spray iron plate (1); then heat the painted spray iron plate (1) to raise its temperature to 135-140° C., and keep it warm for 15-20 minutes, and then cool it down naturally after the end of the heat preservation; Step 2: After the temperature of the painted spray iron plate (1) drops to 50-60°C, evenly apply a layer of insulating glue on the top of the EVA film, and the thickness of the insulating glue is 2-3mm; place the circuit board with the lamp beads and electronic components installed on the insulating glue; Step 3: Cover the top of the circuit board with a layer of EVA film, and then cover the top of the EVA film with a layer of PET film to obtain a semi-finished product of the floodlight housing; Step 4: Select the corresponding stamping die according to the size of the semi-finished product of the floodlight housing. After the stamping die is installed on the punch press, the semi-finished product of the floodlight housing is installed on the stamping die. Through the impact of the punch press and with the cooperation of the stamping die, the finished product of the floodlight housing is obtained; Step 5: Get the finished floodlight housing, remove it, trim its edges and remove burrs.

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