Waterproof lamp holder

Abstract

The utility model relates to a waterproof lamp holder. The LED lamp comprises a lamp holder, a metal threaded sleeve and a metal contact block fixed at the bottom of the inner side of the metal threaded sleeve, the metal contact block is electrically connected with a live wire, and the metal threaded sleeve is electrically connected with a null line, and is characterized in that an opening is formed in the bottom of the metal threaded sleeve, a mounting seat is arranged in the lamp holder and located in the area below the opening, and a column body is arranged on the mounting seat; the top end of the column body is provided with a penetrating opening, the metal contact block is fixed to the top end of the column body, the column body is sleeved with a lifting seat, the upper side of the lifting seat is provided with an annular rubber plug, a reset spring is connected between the lifting seat and the mounting seat, under the pushing action of the reset spring, the lifting seat abuts against the bottom of the metal threaded sleeve, and the rubber plug is higher than the metal contact block. After the bulb is installed, under the thrust of the reset spring, the rubber plug is tightly attached to the bulb, so that rainwater is not prone to flowing into the area where the metal contact block is located, and the phenomenon of short circuit caused by water inflow is avoided.

Description

Technical Field

[0001] The utility model relates to a lamp holder, in particular to a waterproof lamp holder. Background Art

[0002] A lamp holder generally refers to the device used to mount a light bulb, equipped with the necessary components such as the bulb mount and power cord. Depending on how the bulb is mounted, it can be categorized as either a screw-on or bayonet-type lamp holder, with screw-on lamp holders being the more common type. Screw-on lamp holders are equipped with a metal threaded sleeve. The sleeve has metal contacts at its base, which are electrically connected to the live wire and the neutral wire. The metal contacts are insulated from the sleeve. When the bulb is screwed onto the sleeve, the metal contacts make conductive contact with the corresponding contacts on the bulb, and the sleeve also makes conductive contact with the metal threads of the bulb.

[0003] In actual use, if the lamp holder is installed outdoors, there will be a certain probability of water leakage. Even if the lamp holder itself has a waterproof effect, rainwater may penetrate in from the screw mouth. Once the rainwater enters the inside of the metal threaded sleeve, there is a probability of causing a short circuit, causing a safety risk. Therefore, this safety risk needs to be resolved. Summary of the Invention

[0004] The utility model provides a waterproof lamp holder, which solves the problem in the prior art that a lamp holder installed outdoors may be short-circuited due to water ingress.

[0005] The above-mentioned technical problems of the present invention are mainly solved by the following technical solutions: a waterproof lamp holder, comprising a lamp holder, a metal threaded sleeve fixed in the lamp holder and a metal contact fixed at the bottom inner side of the metal threaded sleeve, the metal contact being electrically connected to a live wire, and the metal threaded sleeve being electrically connected to a neutral wire, characterized in that: an opening is opened at the bottom of the metal threaded sleeve, a mounting seat is provided in the lamp holder and in an area below the opening, a column is provided on the mounting seat, the top end of the column is arranged to pass through the opening, the metal contact is fixed to the top end of the column, a lifting seat is sleeved on the column, an annular rubber plug is provided on the upper side of the lifting seat, a reset spring is connected between the lifting seat and the mounting seat, and under the pushing action of the reset spring, the lifting seat abuts against the bottom of the metal threaded sleeve, and the rubber plug is arranged to be higher than the metal contact.

[0006] When the bulb is not installed, the rubber plug at the bottom of the metal threaded sleeve is in a protruding position due to the action of the return spring. When the bulb is installed, as the screw-on bulb is screwed in, the bottom of the bulb first contacts the rubber plug, which then presses the rubber plug downward until it abuts the metal contact. At this point, the return spring pushes the rubber plug tightly against the bulb. This prevents rainwater from flowing into the area where the metal contact is located, thus preventing water ingress and short circuits.

[0007] Furthermore, a hollow cavity is formed between the metal threaded sleeve and the mounting base, and the lamp holder is provided with an exhaust hole connecting the hollow cavity and the external space; the aperture of the exhaust hole is between 1 and 2 mm. Although the rubber plug can prevent rainwater from flowing into the area where the metal contact is located, there is still a risk of rainwater seeping into the metal threaded sleeve of the utility model. The accumulation of rainwater over a long period of time will cause metal corrosion and increase the risk of short circuits. Because the utility model heats up due to the heat of the bulb when it is powered on, the accumulated water inside will turn into water vapor after heating. Therefore, the utility model provides an exhaust hole to discharge this water vapor, thereby ultimately achieving the effect of drying the hollow cavity. The exhaust hole has a single-hole structure, so only the water vapor generated inside will be discharged from the exhaust hole due to the effect of the air pressure difference. The external rainwater has difficulty flowing in due to the air pressure difference. At the same time, the aperture of the exhaust hole is small, and the surface tension of the water will also hinder its flow into the exhaust hole.

[0008] Furthermore, the mounting base and the column are hollow structures. The metal contact is formed with a plug-in post, and an annular groove is formed on the side wall of the plug-in post. The inner cavity of the column is provided with a positioning protrusion that engages with the annular groove. The live wire is welded to the bottom of the plug-in post, and the neutral wire is welded to the bottom of the metal threaded sleeve. The bottom of the mounting base is provided with a glue-filled area, and the live wire and neutral wire both pass through the glue-filled area. The bottom of the mounting base is provided with an outwardly extending flange that fits the lamp holder, and a sealing ring is sandwiched within the fitting area. By providing the sealing ring and glue-filled area, the utility model can significantly improve the overall sealing performance of the lamp holder, effectively preventing rainwater from seeping into the interior.

[0009] Therefore, compared with the prior art, the present invention has the following characteristics: 1. After the light bulb is installed in the present invention, under the thrust of the reset spring, the rubber plug fits tightly against the light bulb, so that rainwater is not easy to flow into the area where the metal contact block is located, thereby avoiding the phenomenon of water inflow and short circuit; 2. The present invention can significantly improve the overall sealing performance of the lamp holder by setting a sealing ring and a glue filling area, and can effectively prevent rainwater from seeping into the interior; 3. The present invention discharges these water vapor by setting an exhaust hole, thereby ultimately achieving the effect of drying the hollow cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Attachment Figure 1 This is a structural diagram of the rubber stopper in the present invention when it is in a natural state;

[0011] Attachment Figure 2 It is attached Figure 1 A magnified view of part A;

[0012] Attachment Figure 3 It is a structural schematic diagram of the rubber plug in the present invention when it is in a compressed state. DETAILED DESCRIPTION

[0013] The technical solution of the present invention will be further specifically described below with reference to embodiments and in conjunction with the accompanying drawings.

[0014] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0015] Example 1: See Figure 1 and Figure 3 A waterproof lamp holder includes a lamp holder 10, a metal threaded sleeve 20 fixed in the lamp holder, and a metal contact 30 fixed to the bottom inner side of the metal threaded sleeve. The metal contact is electrically connected to a live wire 40, and the metal threaded sleeve is electrically connected to a neutral wire 50. The lamp holder is provided with 2 to 4 positioning holes 11, and the bottom of the metal threaded sleeve is provided with an opening 21. A mounting seat 60 is provided in the lamp holder and below the opening. The mounting seat is provided with a column 61, the top of the column is provided with a through-opening, the metal contact is fixed to the top of the column, and a lifting seat 70 is provided on the column. An annular rubber plug 71 is provided on the upper side of the lifting seat, and a reset spring 80 is connected between the lifting seat and the mounting seat (see attached Figure 2 ), under the pushing action of the return spring, the lifting seat abuts against the bottom of the metal threaded sleeve, and the rubber plug is set higher than the metal contact block.

[0016] When the bulb is not installed, the rubber plug at the bottom of the metal threaded sleeve is in a protruding position due to the action of the return spring. When the bulb is installed, as the screw-in bulb is screwed in, the bottom of the bulb first contacts the rubber plug, which then presses the rubber plug downward until it abuts the metal contact. At this point, the return spring pushes the rubber plug tightly against the bulb, preventing rainwater from flowing into the area where the metal contact is located, thus avoiding water ingress and short circuits.

[0017] See Figure 1A hollow cavity 12 is formed between the metal threaded sleeve and the mounting base, and an exhaust hole 13 is provided on the lamp holder to connect the hollow cavity and the external space; the aperture of the exhaust hole is 1.5mm. Although the rubber plug can prevent rainwater from flowing into the area where the metal contact is located, there is still a risk of rainwater seeping into the metal threaded sleeve of this embodiment. The accumulation of rainwater for a long time will cause metal corrosion and increase the risk of short circuit. In addition, because this embodiment will heat up due to the heat of the bulb when it is powered on, the accumulated water inside will turn into water vapor after heating. For this reason, this embodiment discharges this water vapor by setting an exhaust hole, thereby ultimately achieving the effect of drying the hollow cavity. The exhaust hole is a single-hole structure, so only the water vapor generated inside will be discharged from the exhaust hole due to the effect of the air pressure difference, and it is difficult for rainwater from the outside to flow in due to the air pressure difference. At the same time, the aperture of the exhaust hole is small, and the surface tension of the water will also hinder its flow into the exhaust hole.

[0018] See Figure 1 and Figure 2 The mounting base and column are hollow structures. A plug-in post 31 is formed on the metal contact block, and an annular groove 32 is formed on the side wall of the plug-in post. A positioning protrusion 62 is provided on the inner cavity of the column, which engages with the annular groove. The live wire is welded to the bottom of the plug-in post, and the neutral wire is welded to the bottom of the metal threaded sleeve. A glue potting area 90 is provided at the bottom of the mounting base, through which both the live and neutral wires pass. An outwardly extending flange 63 is provided at the bottom of the mounting base. The flange and the lamp holder are screwed together to achieve a seal. A sealing ring 64 is sandwiched within the sealing area. By providing the sealing ring and glue potting area, this embodiment significantly improves the overall sealing performance of the lamp holder, effectively preventing rainwater from seeping into the interior.

[0019] It is obvious to those skilled in the art that the present invention can be modified in many ways, and such modifications are not considered to depart from the scope of the present invention. All such modifications obvious to those skilled in the art are intended to be included within the scope of the present claims.

Claims

1. A waterproof lamp holder, comprising a lamp holder, a metal threaded sleeve fixed within the lamp holder, and a metal contact fixed to the inner bottom of the metal threaded sleeve, wherein the metal contact is electrically connected to a live wire, and the metal threaded sleeve is electrically connected to a neutral wire, characterized in that: An opening is provided at the bottom of the metal threaded sleeve, and a mounting seat is provided in the lamp holder and in the area below the opening. A column is provided on the mounting seat, and the top of the column is set to pass through the opening. The metal contact is fixed to the top of the column. A lifting seat is provided on the column, and an annular rubber plug is provided on the upper side of the lifting seat. A reset spring is connected between the lifting seat and the mounting seat. Under the pushing action of the reset spring, the lifting seat abuts against the bottom of the metal threaded sleeve, and the rubber plug is set higher than the metal contact.

2. The waterproof lamp holder according to claim 1, characterized in that: A hollow cavity is formed between the metal threaded sleeve and the mounting base, and an exhaust hole is provided on the lamp holder, which connects the hollow cavity and the external space; the aperture of the exhaust hole is between 1 and 2 mm.

3. The waterproof lamp holder according to claim 1, characterized in that: The mounting seat and the column are hollow structures, a plug-in column is formed on the metal contact block, an annular groove is formed on the side wall of the plug-in column, and a positioning protrusion engaged with the annular groove is provided on the inner cavity of the column; the live wire is welded to the bottom of the plug-in column, and the neutral wire is welded to the bottom of the metal threaded sleeve. A glue filling area is provided at the bottom of the mounting seat, and the live wire and the neutral wire both pass through the glue filling area.

4. The waterproof lamp holder according to claim 3, characterized in that: The bottom of the mounting seat is provided with a flange extending outward, the flange is fitted with the lamp holder, and a sealing ring is clamped in the fitting area.

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