Patent Grant
11635173
The present invention relates to the technical field of light bulbs, and in particular to a waterproof light bulb.
Light bulbs are the primary light fixtures used for lighting, and as technology evolves, from traditional tungsten filament bulbs to current LED chip bulbs, LED bar bulbs, etc., a wide variety of light bulbs have become more common and widely used for lighting in industrial, home, mine, etc. environments.
In actual use, existing LED bulbs, particularly bulb structures employing LED strips, often suffer from water ingress within the bulb due to climate, environment, rain, and the like, causing damage to the LED strip, or from misting of these water vapors within the bulb, and the like, affecting use. Therefore, how to prevent water ingress inside the bulb of a light bulb becomes a key issue for light bulb fabrication. To solve the above problems, the inventors have made a new invention.
It is an object of the present invention to provide a waterproof light bulb, characterized by good waterproof properties against the defects of the prior art.
In order to achieve the above object, the invention is a waterproof light bulb, comprising a lamp head and a bulb connected to the lamp head, further comprising a soft glue lamp base and the stein structure having a resilient waterproof action, the stein structure is connected to the lamp head and extends into the bulb, the stein structure includes a first metal lead, an LED strip, and a second metal lead in sequential electrical connection, each of the first and second metal leads being integrally formed with the soft glue lamp base that is sealingly tightly fitted with the inside of the mouth of the bulb and each of the first and second metal leads being electrically connected with the lamp head.
Further, the LED strip is externally coated with an encapsulating layer, the encapsulating layer being an epoxy resin, a polyurethane modified epoxy resin, or a polyurethane resin.
Preferably, the first and second metal leads are each provided with detents for connecting the LED strip, the encapsulating layer integrally encapsulating the LED strip and detents.
Preferably, the lower end width of the first metal lead and second metal lead is greater than the upper end width.
Further, the stein structure further comprises a first resistor for preventing damage to the LED strip.
Preferably, the first resistor is provided at the first metal lead or the second metal lead, and the first resistor is located between the LED strip and the soft glue lamp base.
Preferably, the first resistor is integrated with the LED strip.
Preferably, the stein structure further comprises a second resistor.
Further, the first and second metal leads are circular or flat shaped.
Still further, the soft glue lamp base bottom is provided with a flange abutting against the mouth of the bulb.
Benefits: Compared to the prior art, the invention is a waterproof light bulb, comprising a lamp head and a bulb connected to the lamp head, further comprising a soft glue lamp base and a stein structure having a resilient waterproof action, the stein structure is connected to a lamp head and extends into a bulb, the stein structure comprising a first metal lead, an LED strip, and a second metal lead in sequential electrical connection, the first metal lead and the second metal lead each being integrally formed with the soft glue light base, the first metal lead and the second metal lead each being electrically connected with the lamp head, the soft glue light base being sealingly tightly fitted with the inside of the mouth of the bulb; the present invention has the following advantages: 1. The bulb is provided with the soft glue lamp base, with a waterproof sealing action, improving the waterproof properties of the bulb; 2. Improving the stein overall structure, the first and second metal leads being provided with detents which are encapsulated together with the LED strip, simplifying process flow and reducing production costs; 3. The lower end width of the first and second metal leads is greater than the upper end width, and the metal leads have better supporting effect while saving material.
Reference Numbers Include:
Lamp head—1, bulb—2, soft glue lamp base—3, flange—31, stein structure—4, first metal lead—41, LED strip—42, second metal lead—43, encapsulating layer—44, detent—45, first resistor—46, second resistor—47.
The invention will now be described in detail with reference to
The invention is a waterproof light bulb, comprising a lamp head 1 and a bulb 2 connected to the lamp head 1, further comprising a soft glue lamp base 3 and stein structure 4 with resilient waterproof action, the stein structure 4 is connected to the lamp head 1 and extends into the bulb 2, the stein structure 4 comprises a first metal lead 41, an LED strip 42 and a second metal lead 43 in sequential electrical connection, the first metal lead 41 and the second metal lead 43 each integrally formed with the soft glue lamp base 3 sealingly tightly fitted with the inside of the mouth of the bulb 2 and respectively electrically connected with the lamp head 1. The light bulb of the present invention is provided with the soft glue lamp base 3 to improve the waterproof properties of the light bulb, and at the same time the soft glue lamp base 3 is injection-molded directly with the first and second metal leads 41, 43, which is produced by simply placing the molded stein structure 4 directly in the respective arrangement and directly injection molding, the structure can be greatly simplified and the production process reduced. The soft glue lamp base 3 is mainly made of rubber or silicone material and has a certain elasticity to enhance the sealing effect.
In this technical solution, the LED strip 42 is externally coated with an encapsulating layer 44 that is an epoxy resin, a polyurethane modified epoxy resin, or a polyurethane resin. The LED strip 42 is a flexible light emitting panel that is externally coated with an encapsulating layer 44 that is coated with a resin, primarily epoxy, polyurethane modified epoxy, or polyurethane resin, which has the advantages of high temperature resistor, good toughness, non-irritating odor, and the like.
Preferably, the first and second metal leads 41, 43 are each provided with detents 45 for connecting the LED strip 42, the encapsulating layer 44 integrally encapsulating the LED strip 42 and the detents 45. The conventional stein structure 4 is typically only partially coated with the encapsulating layer 44 on the LED strip 42, and forming the stein structure 4 in such a way that the first and second metal leads 41, 43 are soldered to both ends of the LED strip 42, this forming approach tends to suffer from soldering difficulties due to the small volume of the light bar and metal leads, on the other hand, it is costly to manufacture by soldering, complicated process flow, and to overcome the above-mentioned problems, the inventors provide detents 45 on the metal wires to directly snap the light bar and encapsulate the snap-on site with the LED strip 42, provide further secure connection of the metal leads to the LED strip 42 for ease of assembly, and reduce production costs.
As shown in
In the present solution, the stein structure 4 further comprises a first resistor 46 for preventing damage to the LED strip 42. When the light bulb of the present invention is less powerful, typically no more than 3 W, such a small power bulb may not need to be provided with a resistor, nor is the LED strip 42 damaged, and when the power is more than 3 W during in use, the first resistor 46 needs to be provided to prevent excessive current, damaging the light bulb,
As an embodiment, the first resistor 46 is provided in either the first metal lead 41 or the second metal lead 43, and the first resistor 46 is located between the LED strip 42 and the soft glue lamp base 3. In this embodiment, since the invention employs metal leads integrally formed with the soft glue lamp base 3, the first resistor 46 in this embodiment is exposed to the soft glue lamp base 3 such that the first resistor 46 does not need to be squeezed by the injection pressure and is less prone to damage and the yield of the light bulb is higher during the molding process.
As another embodiment, the first resistor 46 is integrated with the LED strip 42. Thus, concealment of the resistors within the light bar 42 together is achieved, avoiding that the first resistor 46 is exposed to affect the overall aesthetics of the bulb.
Preferably, the stein structure 4 further comprises a second resistor 47. On the basis of the first resistor 46, the second resistor 47 can be added again, the second resistor 47 having a current limiting and heat dissipating effect. The location of the second resistor 47 may likewise be provided on the metal lead or LED strip 42.
In this invention, the first and second metal leads 41, 43 can be circular or flat, depending on actual needs, increasing the diversity of light bulbs to meet consumer needs.
As shown in
The foregoing is merely preferred embodiments of the invention, and is not to be construed as limiting the invention in all respects of the detailed description and the scope of application to those skilled in the art, in light of the spirit of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202221258087.9 | May 2022 | CN | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 11125430 | Wu | Sep 2021 | B1 |
| 20190338891 | Heil | Nov 2019 | A1 |
