WO2006039849A1

WO2006039849A1 - Waterproof led light tube

Info

Publication number: WO2006039849A1
Application number: PCT/CN2005/000837
Authority: WO
Inventors: Jiayan Zhang
Original assignee: Jiayan Zhang
Priority date: 2004-10-13
Filing date: 2005-06-13
Publication date: 2006-04-20
Also published as: CN2763696Y

Abstract

A waterproof LED light tube, formed by putting LEDs being connected to a circuit board or wires in a housing, with an insulating coating material having waterproofing, moistureproofing, and corrosionproofing properties being covered on electronic components on circuit boards or wires, peripheries of pins of LEDs, power cords, signal wires, various other components requiring waterproofing and joints thereof, characterized in that at least one opening for aeration and dehumidification is provided on the housing. The waterproof LED light tube, based on the principle of waterproofing, protects the electronic device(s) inside the housing by use of the insulating coating material having waterproofing, moistureproofing, and corrosionproofing properties on the one hand, and keeps the air inside the housing dry by use of the opening(s) for aeration and dehumidification on the other hand, so that excellent waterproofing effect can be achieved, and life expectancy of LED lamp tube is extended. The waterproof structure is also usable on other electronic devices, electronic elements, and/or at joints of connecting wires.

Description

Waterproof LED tube

The present invention relates to a lamp for lighting decoration, and more particularly to an LED lamp having a waterproof structure.

Background technique

At present, LED LED lighting technology is widely used in large outdoor display screens, and can replace neon lights as decorative lighting products, but the existing lamps, including LED tubes, mostly waterproof the structure, and then A rubber ring for sealing is provided on a plurality of connecting ports at the outlet hole of the bottom; the waterproofing structure of the lamp tube is easy to loosen after use for a period of time, and the waterproofing is invalid, and the lamp tube may appear in the lamp tube. Moisture or even water droplets cause damage to the circuit and shorten the life of the lamp.

Chinese patent, patentee: Fan Banghong, patent number: ZL03273884.6, the patent document discloses a LED tube analog neon waterproof storage line structure, mainly including circuit board, LED, round tube lampshade, base, A through hole is arranged at each end of the backlight surface of the round lampshade, and a bushing is matched in the through hole, and the joint of the bushing and the lampshade and the electric wire is filled with waterproof glue. The main water-proof structure of the above structure is still to seal the outer cover. Once water or water vapor enters the round lamp cover, since the circular lamp cover is not ventilated, the inside thereof is difficult to dry, so the circuit is easily damaged.

U.S. Patent, Patent No.: Chung-Chin Yang, Patent No.: US Pat.

Summary of the invention

The invention overcomes the shortcomings in the prior art that once water or water vapor enters the lampshade, the inside is difficult to dry, so the circuit is easily damaged, and a waterproof LED with good ventilation, waterproof, moisture proof effect and long service life is provided. Light tube.

In order to achieve the above object, a waterproof LED lamp of the present invention is formed by placing an LED plugged on a circuit board or a wire in an outer casing, and electronic components and LEDs on the circuit board or the electric wire. The circumference of the foot, the power cord, the signal line and various parts that need to be waterproofed and the joints thereof are covered with a waterproof, moisture-proof, anti-corrosion insulating coating, and at least one ventilation and drainage is provided on the outer cover. Opening.

According to the waterproof LED lamp of the present invention, at least one bottom opening is provided at the bottom of the outer cover, which is mainly used for discharging water or water vapor entering the outer cover in time.

According to the waterproof LED lamp of the present invention, at least one opening is provided on the upper end surface, the backlight surface, or both side surfaces of the outer cover. The opening may be provided at the upper end surface, the backlight surface, or both sides and the bottom portion, or only the upper end surface, the backlight surface, or both sides may be provided, and according to different conditions, water or water vapor entering the outer cover may be discharged in time according to different conditions. can.

According to the waterproof LED lamp of the present invention, a waterproof cover for preventing water from flowing from the opening is formed outside the opening provided on the upper end surface, the backlight surface, or both side surfaces of the outer cover. The waterproof cover is mainly used for the LED tube disposed outdoors, preventing rainwater from flowing directly into the cover from the opening.

According to the waterproof LED lamp of the present invention, the waterproof cover is integral with the outer cover, or the contact portion between them is provided with a waterproof gasket and/or a waterproof paint. Such a structure prevents water from penetrating into the outer casing from above or from the side of the waterproof cover.

According to the waterproof LED lamp of the present invention, a waterproof cover having an open bottom is provided on the backlight surface of the cover or outside the opening provided on both sides. The upper part of the waterproof cover can block water and the bottom part can be ventilated.

According to the waterproof LED lamp of the present invention, a shield waterproof cover is provided above the opening provided on the upper end surface of the cover. The shielding waterproof cover can cover the opening to prevent rainwater from flowing directly into the outer casing from the opening, and the gap between the shielding waterproof cover and the opening can be ventilated. The edge of the shielded waterproof cover is preferably bent downward.

The waterproof LED lamp tube according to the present invention, wherein the outer cover is connected by a pipe and a base, and the pipe may be a completely transparent or translucent pipe having a diffusing effect on light, and the base may be an opaque groove. Shaped base. The openings of such waterproof LED tubes are mainly placed on the base, and LEDs and other electronic components are usually placed in the base.

According to the waterproof LED lamp of the present invention, in order to protect a plurality of waterproof LED tubes of the present invention when they are connected to each other, the connection of the power line and the signal line is placed outside. Inside the cover or inside the waterproof cover.

According to the waterproof LED lamp of the present invention, the LED tube is provided with two power lines connected to each other and two signal lines connected to each other, wherein one of the power line and the signal line is located in the outer cover or the waterproof cover. Inside, the connector end of the other power cable and signal cable is located outside the cover and the waterproof cover.

According to the waterproof LED lamp of the present invention, the power line and the signal line of the connector end located in the outer cover or the waterproof cover are short, and the connector end is located at a power line and a signal line length outside the cover and the waterproof cover. In this way, connecting the long power cable and signal cable to the shorter power cable and signal cable, the connector can be placed in the housing or in the waterproof cover.

In order to explain the achievable effects of the present invention, it is first necessary to understand the principle of waterproofing, and to maintain the need for drying of components such as water, mildew, moisture, and corrosion. And any sealing method can not achieve the long-term waterproof effect, there are three reasons: (1), the expansion coefficient of various materials is inconsistent and aging, in the long-term use process, especially when set outdoors, due to climate change , sun exposure, rain, cold, heat, temperature difference and other reasons, there must be gaps at the junction; (2) the internal space of the lamp is fixed, if the air inside the lamp does not communicate with the outside air, according to physics Charlie's law (a certain mass of gas, in the case of constant volume, the temperature increases or decreases Γ C, the pressure is increased or decreased equal to the pressure of 1/273 at 0 °), then the pressure inside the tube It is strong with the outside world. However, according to (1) there is a gap at the junction, so that the air in the tube can communicate with the outside air through these gaps, of course, the outside humid air can enter the tube, so that the air inside the tube is wet; (3) When the temperature of the lamp is lowered, the humid air inside the lamp tube cannot be quickly changed into dry air through these gaps, and the humid air causes moisture or even water drops in the lamp tube, thereby causing damage to the circuit and shortening. The life of the lamp. It is according to this principle to provide an opening for ventilation and drainage on the outer cover. Regarding the size, number and location of the openings, the principles are set: These openings keep the inside of the lamp dry. This will increase the waterproof performance of the LED tube and extend its service life.

Similarly, the principle is also applicable to waterproof structures of other electrical appliances, electronic components, or connecting wires (such as power lines or signal wires) that need to be waterproofed, such as various small devices that are set up outside by electronic components, such as: The controller, the instrument, the meter, and the like can also be used to achieve effective waterproofing by using the method of the present invention. SP: Disposing the waterproofing electrical appliance, electronic component, or cable connector in the outer cover, On the parts that need to be waterproofed and their joints, the cover is covered with a waterproof, moisture-proof, anti-corrosion insulation. At least one ventilation and drainage opening is provided on the outer cover.

DRAWINGS

1 is a perspective perspective view showing the waterproof LED tube of Embodiment 1.

Figure 2 is a perspective perspective view showing the waterproof LED tube of the embodiment 2

Figure 3 is a perspective perspective view showing the waterproof LED tube of the embodiment 3

Figure 4 is a perspective structural view showing the waterproof cover of Embodiment 3;

Figure 5 is a schematic view showing the connection structure of the waterproof LED tube of the embodiment 3;

Figure 6 is a perspective perspective view showing the waterproof LED tube of the embodiment 4.

Figure 7 is a perspective perspective view showing the waterproof LED tube of the embodiment 5;

Figure 8 shows a perspective view of a waterproof LED tube

1... outer cover; 2... pipe;

3 LED; 4... vent

4a ...... vent hole; 5... end cap rod;

6...end cap; 7...outlet

8, 8a, 8b, 8c power line 9, 9a, 9b, 9c signal

10...electronic components; 11...base;

12... circuit board; 13 LED feet;

14...wire; 15...waterproof cover;

16...waterproof coating layer; 17...water outlet hole;

18...power supply 19...waterproof gasket;

20...backlit surface; 21...sheath;

61, 151, 152 hem. detailed description

Specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. Example 1

Referring to Fig. 1, the waterproof LED tube of this embodiment is vertically placed in use, and is formed by inserting an LED 3 inserted on the circuit board 12 into a housing 1. The circuit board 12 as a whole and the electronic component 10 connected to the circuit board 12, the periphery of the LED pin 13, the power lines 8a, 8b, the signal lines 9a, 9b, the power source 18 and various components requiring waterproof use and The joint is covered with at least one coating of glue and lacquer, and the coating is a waterproof, mildew, moisture, corrosive insulating coating, which may be collectively referred to as a waterproof coating layer 16. The electronic component 10 includes a diode, a transistor, a capacitor, a resistor, a chip, and the like. The outer cover 1 can be composed of a circular duct 2 and a opaque trough-shaped base 11, which is a fully transparent or translucent duct having a diffusing effect on the light, and the duct 2 is connected to the base 11. The LED lamp of this embodiment is formed. A water outlet 7 is provided at the bottom end of the outer cover 1, and the water outlet 7 can discharge the mist and water droplets in the lamp tube in time. The water outlet 7 is not limited to one form, and may be a full opening form or a partial opening. The form of the hole, or a variety of forms such as a slanted opening. As shown in Fig. 1, the power lines 8a, 8b and the signal lines 9a, 9b can be accessed from the water outlet 7.

The upper portion of the outer cover 1 is not closed, and is provided with a venting device for preventing air from flowing directly from above the outer cover, and the venting device includes a vent 4 provided at the top end of the outer cover 1 and an end covering the vent 4 The cap 6, the vent 4 and the water outlet 7 are respectively disposed above and below the outer cover 1, and function to convect the air in the tube so that the mist is not accumulated and the inside is wet.

In order to prevent water from flowing directly from above the vent, the outer edge of the end cap needs to protrude outside the outer edge of the vent. For the purpose of gas circulation, a certain distance is required between the end cap and the vent. Referring to Fig. 1, the edge of the end cap 6 is formed with a downwardly bent flange 61 to form a lower concave end cap. In the end cap 6, a plurality of end caps 5 may be provided through which the end cap 5 and the outer cover are provided. The top end of the 1 is integrated into one. In order to achieve a high-quality water retaining effect, the lower edge of the flange 61 can be further folded, forming an inner curved shape, or a vertical shape.

The waterproof coating is available in the market, for example: silicone high-elastic electronic component potting glue, which can be S2121 elastic electronic potting glue produced by Beijing Hangtong Technology Co., Ltd., or various types of waterproof paint, such as : Three anti-insulating paints (moisture proof, mildew proof, anti-salt mist) of Shanghai Kailin Paint Factory.

The pipe 2 may also have other shapes as needed, such as a rectangular parallelepiped or a polyhedron. Example 2

Referring to Figure 2, there is shown another variation of the waterproof LED tube of the present invention. It is placed in the longitudinal direction, and is formed by arranging the LEDs 3 plugged into the wires 14 into a line, and inserting the LED wires into a housing 1 to be inserted. The outer cover 1 is a fully transparent or translucent tubular outer cover 1 having a variety of shapes which is diffused to light. The electric wire 14 as a whole and the electronic component 10 connected to the electric wire 14, the power supply lines 8a, 8b, the signal wires 9a, 9b, the LED legs 13, and the like, and the various parts requiring waterproofing and the connection thereof are covered with glue or Paint, the glue or lacquer is a waterproof, mildew, moisture, corrosive insulating coating. In the present embodiment, the ventilation and moisture guiding structures of the vent 4, the end cap 6 and the water outlet 7 are the same as in the first embodiment. Example 3

Referring to Figure 3, there is shown another variation of the waterproof LED tube of the present invention. When it is used in the longitudinal direction, the structure of the waterproof coating layer 16 in the tube is the same as that of the first embodiment except that the structure of the waterproof cover 1 is different from that of the embodiment 1.

At the bottom end of the outer cover 1, one or more water outlet holes are provided. The water outlet hole 17 can discharge the mist and water droplets in the lamp tube in time, and the top end of the outer cover 1 is closed. A large vent 4 is formed in the upper portion and the lower portion of the backlight surface 20 of the cover 1, through which the power supply line and the signal line can be connected to other power lines and signal lines. The shape of the vent 4 may be arbitrary, and may be a square or a rectangle as shown in Fig. 3, or may be a circle or the like. Of course, the vent 4 can also be one.

On the outer side of each vent 4, there is a waterproof cover 15 which is open at the bottom. The waterproof cover 15 prevents water from flowing directly from the vent 4 into the outer cover 1. The upper end of the waterproof cover 15 is higher than the upper edge of the vent 4, and the bottom end The edge is preferably lower than the lower edge of the vent 4 and may be flush with the lower edge of the vent 4.

Preferably, a waterproof gasket 19 is disposed between the waterproof cover 15 and the base 11. The structural drawing of the waterproof cover 15 is shown in FIG. 4; of course, the waterproof coating can be covered at a position where the waterproof cover 15 is in contact with the grooved base 11 Water is prevented from penetrating into the outer cover 1 and the waterproof cover through a gap above or on the side of the waterproof cover 15. Of course, the waterproof cover 15 and the base 11 can also be made in one piece. The outer shape of the waterproof cover 15 can be any, and can be a cube shape as shown in Fig. 3 and Fig. 4, which is convenient for mounting and fixing the entire LED lamp.

The outer cover 1 may also have other shapes in order to meet the needs of different occasions. The vent and the waterproof cover may also be disposed on the other side faces of the grooved base 11 according to the requirements of the installation.

Since the waterproof LED tube of the embodiment has a water outlet hole at the bottom of the groove-shaped base 11 and a vent hole at the side, the air can be freely circulated in the outer cover, so that the inside of the lamp tube can be kept dry for a long time, and The surface of the electronic components to be waterproofed inside the cover is coated with a waterproof coating, which can achieve waterproof, moisture-proof, mildew-proof and anti-corrosion effects, making the waterproof LED tube safer and longer lasting.

Since the waterproof LED tube of the present invention is used, it is sometimes necessary to simultaneously provide a plurality of waterproof LED tubes, and the power lines or signal lines between the LED tubes and the LED tubes are connected to the power source and the signal source. When connecting, if the connection point is set outside, it is easy to directly contact the outside world. Due to climate change, sun exposure, rain, cold, heat, temperature difference, etc., the circuit at the connection point is damaged. The waterproof LED tube of the invention, as shown in FIG. 3, is provided with a short power line 8a, which can be used as a power input line, and the interface of the power line 8a is placed in the base 11 or the waterproof cover; The power cord 8b can be used as a power output line; a short signal line 9a is also provided, which can be used as a signal input line, and the interface of the signal line 9a is placed in the base 11 or the waterproof cover; The signal line 9b can be used as a signal output line; thus, when the waterproof LED tube of the present invention is connected, as shown in FIG. 5, it is connected to and connected to the power source and the signal source. The structural diagram of the time, the power line 8c connected to the external power source is connected to the shorter power line 8a, and the longer power line 8b extends into the outer cover of the next waterproof LED tube, and the inside of the waterproof LED tube The shorter power cords 8a are connected so that they can be continuously connected, and the connection joint between each power cord is in the base 11 or the waterproof cover; likewise, the signal line 9c connected to the signal source and the shorter signal line 9a is connected, and the longer signal line 9b extends into the outer cover of the next waterproof LED tube, and is connected with the shorter signal line 9a in the waterproof LED tube, so that it can be continuously connected, and each signal line The connection joint between them is in the base 11 or the waterproof cover. The above structure can effectively protect the safety of the power supply and signal connection connectors.

Example 4

Referring to Figure 6, there is shown another variation of the LED tube of the present invention. When used in the horizontal direction, the structure of the waterproof coating layer 16 in the lamp tube is the same as that of the first embodiment, except that the structure and implementation of the waterproof cover 1 are Example 1 is not the same.

When the waterproof LED tube of this embodiment is installed, it is placed laterally, which is different from the position placed in FIG. 6, and the duct 2 is horizontally outwardly disposed. At this time, the bottom surface of the base 11 (the bottom surface refers to the waterproof LED tube at In the horizontal installation state, the lower surface is opened with a long water outlet 7. Since the waterproof LED tube is horizontally mounted, and the water outlet 7 is opened on the bottom surface of the base 11, water does not easily enter the outer cover 1 (a waterproof folding edge can also be added at the edge of the water outlet 7 to The effect of the rainwater not easily entering the outer cover 1 is enhanced). At the same time, since the water outlet 7 is elongated, it extends to almost the entire bottom surface of the base 11, so that the water outlet can completely achieve the purpose of ventilation and drainage, without Also set the vent.

As shown in Fig. 6, the structure of the power supply line and the signal line of the waterproof LED tube of this embodiment can be the same as that of the embodiment 3, and the connection point is located in the outer cover 1 or the waterproof cover.

Example 5

Referring to Figure 7, another variation of the waterproof LED tube of the present invention is shown.

Other conditions are the same as in the fourth embodiment, (the pipe 2 is not shown), except that the structure of the waterproof cover 1 is different, except that the elongated water outlet 7 is opened on the bottom surface of the base 11, and the backlight surface of the base 11 is also provided. , that is, the back of the LED tube, there is also a strip vent 4 .

The vent 4 is provided with a waterproof cover 15 covering the vent 4 to constitute a ventilating device. The waterproof cover 15 is disposed outside the venting opening 4. In order to achieve a high quality water retaining effect, the waterproof cover 15 preferably has a downwardly bent hem 151, and the lower end of the hem 151 may also be provided with an inwardly folded hem. 152.

The waterproof, ventilating, and moisture-proofing effects of the vent 4, the water outlet 7, and the waterproof cover 15 keep the inside of the outer cover 1 dry.

The power supply line 8 and the signal line 9 in Fig. 7 can also be placed in the housing 1 after being connected to other power lines and signal lines.

Example 6

Referring to Figure 8, there is shown another variation of the LED tube of the present invention. The structure of the waterproof coating layer 16 in the tube is the same as that of the first embodiment except that the structure of the waterproof cover 1 is different from that of the embodiment 1. When used, it is placed horizontally or vertically.

a plurality of vent holes 4a are formed on the bottom surface of the base 11 or the two sides of the base 11 parallel to the LED lamp. In particular, a plurality of vent holes are provided on both sides of the power source 18. The power lines 8a, 8b and the signal lines 9a, 9b are pierced from the openings in the bottom surface of the base 11. Since the vent holes are only provided on both sides of the base 11 for the purpose of guiding moisture, drying, and heat dissipation, When in use, it is preferable to place the LED tube indoors or in a relatively dry outdoor.

A waterproof jacket 21 may be provided at a position where the power cords 8a, 8b, the signal wires 9a, 9b are in contact with the base 11. Of course, the waterproof LED tube of the present invention can also adopt other waterproof housing structures. Similarly, the waterproof structure of the present invention is also applicable to other types of lamps (such as various lamps that control color and brightness changes by ICs, etc.), Electronic equipment (such as controllers installed outdoors), and joints of various electronic components or connecting wires (such as: signal wires, connectors at power cords), electrical appliances, electronic components, or connecting wires that need to be waterproofed The joint is disposed in the outer cover, and is covered with a waterproof, moisture-proof, anti-corrosion insulating coating on the part requiring waterproofing and the joint thereof, and at least one opening for ventilation and moisture discharge is provided on the outer cover, and the above can also be achieved. The waterproof effect is therefore not limited to the above-described LED tube structure. Such variations are within the scope of the invention.

Claims

1. A waterproof LED tube formed by placing an LED plugged onto a circuit board or a wire in an outer casing, electronic components on the circuit board or wire, around the LED pin, power lines, signal lines and The various parts requiring waterproofing and the joints thereof are covered with a waterproof, moisture-proof and corrosion-resistant insulating coating, characterized in that at least one opening for ventilation and drainage is provided on the outer cover.

Right

2. A waterproof LED tube according to claim 1, wherein at least one bottom opening (7, 17) is provided at the bottom of the housing.

The waterproof LED lamp according to claim 1 or 2, wherein at least one opening (4, 4a) is provided on the upper end surface, the backlight surface, or both side faces of the outer cover.

4. The waterproof LED lamp book according to claim 3, wherein an outer side of the opening (4, 4a) provided on the upper end surface, the backlight surface, or both side surfaces of the outer cover is provided with water from the opening Flow into the waterproof cover (6, 15) inside the cover.

5. The waterproof LED tube according to claim 4, wherein the waterproof cover (6, 15) is integral with the outer cover, or the contact portion between them is provided with a waterproof gasket (19) and/or a waterproof coating. , can prevent water from flowing into the waterproof cover.

The waterproof LED tube according to claim 4 or 5, wherein a waterproof cover (15) having a bottom opening is provided on the outer side of the opening or the opening (4) of the outer cover.

The waterproof LED lamp according to claim 4, wherein a shield waterproof cover is provided above the opening (4) provided on the upper end surface of the cover.

8. The waterproof LED tube according to claim 7, wherein an edge of the shield waterproof cover is bent downward. .

The waterproof LED tube according to any one of claims 1 to 8, wherein the outer cover is connected by a pipe (2) and a base (11), and the pipe (2) is completely transparent or translucent For pipes that have a diffusing effect on light, the base (11) is a opaque trough-shaped base.

10. The waterproof LED tube according to any one of claims 1 to 8, wherein the outer cover is a completely transparent or translucent pipe having a diffusing effect on light.

The waterproof LED tube according to any one of claims 1 to 10, wherein the connection of the power line and the signal line is placed in a housing or a waterproof cover.

12. The waterproof LED tube according to claim 11, wherein the LED tube is provided with two power lines connected to each other and two signal lines connected to each other, wherein one of the power line and the signal line is located at the joint end. In the outer cover or the waterproof cover, the connector end of the other power cable and signal cable is located outside the cover and the waterproof cover.

13. The waterproof LED tube according to claim 12, wherein the connector end is located in the outer cover or the waterproof cover, the power line and the signal line are short, and the connector end is located outside the outer cover and the waterproof cover, and the signal line length.

14. A waterproof structure at an electrical, electronic component, and/or connector joint, characterized in that an electrical appliance, an electronic component, or a connector is placed in a housing, on a component that requires waterproofing, and a connection thereof, The utility model is covered with an insulating coating which is waterproof, moisture-proof and corrosion-resistant, and at least one opening for ventilation and moisture discharge is arranged on the outer cover.