Stage lamp capable of preventing supporting plate from being corroded

Abstract

The stage lamp capable of preventing the supporting plate from being corroded comprises the supporting plate with first metal and a radiator which is provided with second metal and used for dissipating heat of a light source plate, the activity of the first metal is larger than that of the second metal, electrochemical corrosion can happen between the first metal and the second metal, and the radiator abuts against the supporting plate. An isolating strip for preventing the first metal and the second metal from being electrically connected under the action of rainwater is arranged at the abutting position, and the minimum electrical gap between the second metal and the first metal is larger than or equal to 3 mm on the side, making contact with the outside, of the supporting plate and the side, making contact with the outside, of the radiator. According to the stage lamp capable of preventing the supporting plate from being corroded, the minimum electrical gap between the second metal and the first metal is larger than or equal to 3 mm through the isolating strip on the sides, making contact with the outside, of the supporting plate and the radiator, so that rainwater is not prone to establishing electrical connection between the second metal and the first metal, and the first metal and the second metal can be effectively prevented from forming a primary battery; and the first metal is subjected to electrochemical corrosion.

Description

TECHNICAL FIELD

[0001] The utility model relates to stage lamp technical field more specifically, it relates to a stage lamp of preventing support plate corrosion. BACKGROUND

[0002] Stage lamp usually by the light head that emits light, support arm that rotates light head and the machine case that support arm rotates are composed, because light head wants to rotate fast fastly projects light beam to target position, so want to reduce light head weight as far as possible, therefore part in order to pursue the company will select magnesium alloy and make the shell of light head and support plate. Magnesium is a kind of active metal, outdoor use magnesium alloy, just handle well anticorrosion problem. SUMMARY

[0003] The utility model discloses to overcome the at least one defect of prior art described above, provide a stage lamp of preventing support plate corrosion, effectively guarantee the long-term outdoor use of stage lamp, avoid corrosion damage.

[0004] To solve the above technical problem, the technical scheme adopted by the utility model is: a stage lamp of preventing support plate corrosion, including the support plate with first metal and the heat sink that the second metal with light source plate carries out heat dissipation, the first metal activity is greater than the second metal and can occur electrochemical corrosion between them, the heat sink and the support plate between resist, and the isolation strip that prevents the first metal and the second metal establish electric connection under the action of rain is arranged at the resisting place, on the side that the support plate, the heat sink and the outside contact, the minimum electrical clearance between the second metal and the first metal is greater than or equal to 3mm.

[0005] The stage lamp of preventing support plate corrosion, on the side that the support plate, the heat sink and the outside contact, the minimum electrical clearance between the second metal and the first metal is greater than or equal to 3mm by the isolation strip, rain is not easy to establish electric connection between them, can effectively prevent the first metal and the second metal form primary cell, cause first metal electrochemical corrosion.

[0006] Further, the first metal is magnesium. It is favorable to reduce the weight of the support plate.

[0007] Further, the support plate is composed of magnesium-aluminum alloy. Magnesium-aluminum alloy has good strength, rigidity and dimensional stability.

[0008] Further, the support plate is provided with a light source plate on the side away from the heat sink, the support plate has an avoiding position for avoiding the heat transfer connection between the light source plate and the heat sink, and the isolation strip is arranged around the avoiding position. The avoiding position facilitates the contact between the heat sink and the light source plate for heat transfer, and the isolation strip arranged around the avoiding position can prevent rainwater from entering the interior of the stage lamp through the avoiding position.

[0009] Further, the heat sink comprises a metal heat transfer substrate abutting against the support plate and a metal heat dissipation fin connected to the heat transfer substrate, the metal heat transfer substrate abutting against the support plate is close to the light source plate, and the metal heat dissipation fin extends from the avoiding position to contact the outside. The metal heat transfer substrate conducts the heat of the light source plate in the interior of the stage lamp to the metal heat dissipation fin, and the metal heat dissipation fin conducts the heat to the outside of the stage lamp for heat dissipation.

[0010] Further, the second metal is used as an adhesive to connect the metal heat transfer substrate and the metal heat dissipation fin. The second metal is only used as an adhesive, and is not the main material of the heat sink, so it is difficult to find that the corrosion of the first metal is caused by the electrochemical reaction between the heat sink.

[0011] Further, the second metal is tin. Tin is a commonly used adhesive, has stable performance, and is cheap.

[0012] Further, the isolation strip comprises a sealing strip clamped between the metal heat transfer substrate and the support plate, and a blocking edge between the inside of the avoiding position and the metal heat dissipation fin. The sealing strip has a sealing function to prevent rainwater from entering the interior of the stage lamp through the avoiding position, and the blocking edge has an isolation function to prevent the electrical connection between the first metal and the second metal.

[0013] Further, the thickness of the blocking edge in the direction from the avoiding position to the metal heat dissipation fin is greater than or equal to 3 mm, or the blocking edge protrudes from the side of the support plate away from the light source plate by greater than or equal to 3 mm. Only in a single direction, the minimum electrical gap between the second metal and the first metal is greater than or equal to 3 mm.

[0014] Further, it further comprises an upper cover buckled to the support plate to cover the light source plate, and a lower cover buckled to the support plate to cover the heat sink, the upper cover is made of metal to facilitate the waterproof structure between the support plate and the upper cover, and the lower cover is made of plastic to reduce the weight of the stage lamp.

[0015] Further, the minimum electrical gap between the second metal and the first metal on the side of the support plate, the heat sink in contact with the outside world is greater than or equal to 4mm. So that the first metal and the second metal to establish a better isolation of the electrical connection.

[0016] Further, the minimum electrical gap between the second metal and the first metal on the side of the support plate, the heat sink in contact with the outside world is greater than or equal to 5mm. So that the first metal and the second metal are spaced further apart. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the explosion structure schematic diagram of the lamp holder of the utility model.

[0018] Figure 2 is the explosion structure schematic diagram of the support plate and the isolation strip of the utility model.

[0019] Figure 3 is the structure schematic diagram of the cooperation of the support plate, the isolation strip and the heat sink of the utility model.

[0020] Figure 4 is Figure 3 the enlarged structure schematic diagram of the A part in the figure.

[0021] Figure 5 is the whole structure schematic diagram of the stage lamp of the utility model for preventing the corrosion of the support plate.

[0022] In the figure:

[0023] 110, support plate; 111, avoiding site; 112, pivot connection side plate; 120, heat sink; 121, metal heat transfer substrate; 122, metal heat dissipation fin; 123, adhesive; 130, isolation strip; 131, sealing strip; 1311, sealing convex strip; 132, blocking edge; 140, light source plate; 150, upper cover; 160, lower cover; 200, arm; 300, case. DETAILED DESCRIPTION

[0024] The drawings are only for illustrative purposes and should not be construed as limiting the patent; in order to better illustrate the embodiment, some components of the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationship described in the drawings is only for illustrative purposes and should not be construed as limiting the patent.

[0025] As Figures 1 to 4This utility model provides a stage light with corrosion-resistant support plate, including a support plate 110 with a first metal and a heat sink 120 with a second metal for dissipating heat from a light source plate 140. The first metal is more active than the second metal and electrochemical corrosion can occur between them. The heat sink 120 abuts against the support plate 110, and an isolation strip 130 is provided at the abutment to prevent the first metal and the second metal from establishing an electrical connection under the action of rainwater. On the side of the support plate 110 and the heat sink 120 that is in contact with the outside, the minimum electrical clearance between the second metal and the first metal is greater than or equal to 3 mm.

[0026] Electrical clearance refers to the shortest distance between two adjacent conductors measured along the air; it is a standard technical term. Figure 4 The electrical clearance at this location is the length of the bold line d.

[0027] It should be noted that the first metal and the second metal can be elemental or alloys with other elements.

[0028] The stage light with corrosion protection for the support plate has a minimum electrical gap of 3mm between the second metal and the first metal on the side of the support plate 110 and the heat sink 120 that are in contact with the outside through the isolation strip 130. This makes it difficult for rainwater to establish an electrical connection between the two, and can effectively prevent the first metal and the second metal from forming a galvanic cell, causing electrochemical corrosion of the first metal.

[0029] In a preferred embodiment of this invention, the first metal is magnesium. This helps to reduce the weight of the support plate 110.

[0030] In a preferred embodiment of this invention, the support plate 110 is made of magnesium-aluminum alloy. Magnesium-aluminum alloy has excellent strength, rigidity, and dimensional stability.

[0031] In a preferred embodiment of this utility model, a light source plate 140 is provided on the side of the support plate 110 away from the heat sink 120. The support plate 110 has a clearance position 111 to prevent the light source plate 140 from establishing a heat transfer connection with the heat sink 120. An isolation strip 130 is arranged around the clearance position 111. The clearance position 111 facilitates the heat sink 120 and the light source plate 140 to contact and transfer heat, while the isolation strip 130 surrounding the clearance position 111 can prevent rainwater from entering the stage light through the clearance position 111.

[0032] Preferably, the light source plate 140 is a LED plate, and the avoiding position 111 is a hole for the light source plate 140 or the heat sink 120 to pass through.

[0033] In the preferred embodiment of the present application, the heat sink 120 comprises a metal heat transfer substrate 121 abutting against the support plate 110 and a metal heat dissipation fin 122 connecting the heat transfer substrate 121, the metal heat transfer substrate 121 abutting against the support plate 110 near the light source plate 140, and the metal heat dissipation fin 122 extending from the avoiding position 111 to contact the outside. The metal heat transfer substrate 121 conducts the heat of the light source plate 140 inside the stage lamp to the metal heat dissipation fin 122, and the metal heat dissipation fin 122 conducts the heat to the outside of the stage lamp and dissipates the heat.

[0034] Preferably, the metal heat transfer substrate 121 and the metal heat dissipation fin 122 are made of aluminum or aluminum alloy.

[0035] In the preferred embodiment of the present application, the second metal is used as an adhesive 123 to connect the metal heat transfer substrate 121 and the metal heat dissipation fin 122. The second metal is only used as an adhesive 123, and is not the main material of the heat sink 120, so it is difficult to find that the corrosion of the first metal is caused by the electrochemical reaction with the heat sink 120.

[0036] In the preferred embodiment of the present application, the second metal is tin. Tin is a commonly used adhesive 123, which is stable in performance and low in price.

[0037] Magnesium alloy and aluminum alloy are not prone to electrochemical corrosion in a salt spray environment, but they will have a strong electrochemical corrosion reaction with tin in a salt spray environment, and the heat sink 120 is mostly made of aluminum, and is only connected by tin soldering, so it is difficult to find that the corrosion of the support plate 110 is caused by the heat sink 120.

[0038] As Figure 3 , Figure 4 In the preferred embodiment of the present application, the isolation strip 130 comprises a sealing strip 131 clamped between the metal heat transfer substrate 121 and the support plate 110, and a stop edge 132 between the inside of the avoiding position 111 and the metal heat dissipation fin 122. The sealing strip 131 plays a sealing role to prevent rainwater from the outside from entering the inside of the stage lamp through the avoiding position 111, and the stop edge 132 plays an isolation role to prevent the first metal and the second metal from being electrically connected.

[0039] Preferably, the mounting plate is provided with a receiving groove corresponding to the sealing strip 131, and the sealing strip 131 is provided with a sealing protrusion 1311 on both sides of the mounting plate and the metal heat transfer substrate 121 along the length direction, respectively.

[0040] In the preferred embodiment of the utility model, the thickness of the baffle 132 in the direction from the avoiding position 111 to the metal heat dissipation fin 122 is greater than or equal to 3 mm, or the protrusion of the baffle 132 from the side of the support plate 110 away from the light source plate 140 is greater than or equal to 3 mm. By improving in only a single direction respectively, the minimum electrical gap between the second metal and the first metal can be greater than or equal to 3 mm.

[0041] The protrusion of the baffle 132 from the side of the support plate 110 away from the light source plate 140 is greater than or equal to 3 mm means that the part of the baffle 132 protruding from the support plate 110 to form the avoiding position 111 is greater than or equal to 3 mm, i.e. the part of the support plate 110 adjacent to the baffle 132.

[0042] Figure 4 In the preferred embodiment of the utility model, the thickness of the baffle 132 in the direction from the avoiding position 111 to the metal heat dissipation fin 122 is greater than, and equal to 3 mm, or the protrusion of the baffle 132 from the side of the support plate 110 away from the light source plate 140 is greater than or equal to 3 mm.

[0043] As Figure 1 , Figure 5 In the preferred embodiment of the utility model, an upper cover 150 and a lower cover 160 are further included, the upper cover 150 is buckled to the support plate 110 to cover the light source plate 140, the lower cover 160 is buckled to the support plate 110 to cover the heat sink 120, the upper cover 150 is made of metal, which is convenient for setting a waterproof structure between the upper cover 150 and the support plate 110, the lower cover 160 is made of plastic, which reduces the weight of the stage lamp and can shield the heat sink 120, so that the stage lamp looks more beautiful.

[0044] Preferably, the upper cover 150 is made of magnesium alloy, which reduces the weight.

[0045] Preferably, the stage lamp further includes an arm 200 supporting the rotation of the support plate 110 and a case 300 supporting the rotation of the arm 200, the support plate 110 has two pivot side plates 112 for pivoting with the arm 200, the two pivot side plates 112 are oppositely arranged and located on both sides of the light source plate 140, respectively.

[0046] As Figure 3 , Figure 4In a preferred embodiment of this invention, on the side of the support plate 110 and the heat sink 120 that is in contact with the outside, the minimum electrical clearance between the second metal and the first metal is greater than or equal to 4 mm. This better isolates the first metal from establishing an electrical connection with the second metal.

[0047] In a preferred embodiment of this invention, on the side of the support plate 110 and the heat sink 120 that is in contact with the outside, the minimum electrical clearance between the second metal and the first metal is greater than or equal to 5 mm. This results in a greater distance between the first metal and the second metal.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A stage light with corrosion-resistant support plate, characterized in that, The device includes a support plate (110) with a first metal and a heat sink (120) with a second metal for dissipating heat from a light source plate (140). The first metal is more active than the second metal and electrochemical corrosion can occur between them. The heat sink (120) abuts against the support plate (110), and an isolation strip (130) is provided at the abutment to prevent the first metal and the second metal from establishing an electrical connection under the action of rainwater. On the side of the support plate (110) and the heat sink (120) that is in contact with the outside, the minimum electrical clearance between the second metal and the first metal is greater than or equal to 3 mm.

2. The stage light with corrosion-resistant support plate according to claim 1, characterized in that, The first metal is magnesium.

3. The stage light with corrosion-resistant support plate according to claim 2, characterized in that, The support plate (110) is made of magnesium-aluminum alloy.

4. The stage light with corrosion-resistant support plate according to claim 1, characterized in that, A light source plate (140) is provided on the side of the support plate (110) away from the heat sink (120). The support plate (110) has a clearance position (111) to avoid the light source plate (140) from establishing a heat transfer connection with the heat sink (120). The isolation strip (130) is arranged around the clearance position (111).

5. The stage light with corrosion-resistant support plate according to claim 4, characterized in that, The heat sink (120) includes a metal heat transfer substrate (121) abutting against the support plate (110) and metal heat dissipation fins (122) connected to the heat transfer substrate. The metal heat transfer substrate (121) abuts against the support plate (110) on the side close to the light source plate (140), and the metal heat dissipation fins (122) extend from the clearance position (111) to contact the outside.

6. The stage light with corrosion-resistant support plate according to claim 5, characterized in that, The second metal acts as an adhesive (123) to connect the metal heat transfer substrate (121) and the metal heat dissipation fins (122).

7. The stage light with corrosion-resistant support plate according to claim 6, characterized in that, The second metal is tin.

8. The stage light with corrosion-resistant support plate according to claim 5, characterized in that, The isolation strip (130) includes a sealing strip (131) sandwiched between the metal heat transfer substrate (121) and the support plate (110), and a retaining edge (132) located inside the clearance position (111) and between the metal heat dissipation fins (122).

9. The stage light with corrosion-resistant support plate according to claim 8, characterized in that, The thickness of the baffle (132) in the direction from the clearance position (111) to the metal heat sink fin (122) is greater than or equal to 3 mm, or the baffle (132) protrudes from the support plate (110) away from the light source plate (140) by more than or equal to 3 mm.

10. The stage light with corrosion-resistant support plate according to claim 4, characterized in that, It also includes an upper cover (150) that is fastened to the support plate (110) and covers the light source plate (140) and a lower cover (160) that is fastened to the support plate (110) and covers the heat sink (120), the upper cover (150) being made of metal and the lower cover (160) being made of plastic.

11. The stage light with corrosion-resistant support plate according to claim 1, characterized in that, On the side of the support plate (110) and the heat sink (120) that is in contact with the outside, the minimum electrical clearance between the second metal and the first metal is greater than or equal to 4 mm.

12. The stage light with corrosion-resistant support plate according to claim 1, characterized in that, On the side of the support plate (110) and the heat sink (120) that is in contact with the outside, the distance between the second metal and the first metal is greater than or equal to 5 mm.

Images