CN108954031B

CN108954031B - LED inflatable soft bulb

Info

Publication number: CN108954031B
Application number: CN201710371197.3A
Authority: CN
Inventors: 李先栗
Original assignee: Yinxu Fujian Intelligent Electrical Appliance Co ltd
Current assignee: Yinxu Fujian Intelligent Electrical Appliance Co ltd
Priority date: 2017-05-19
Filing date: 2017-05-19
Publication date: 2022-05-13
Anticipated expiration: 2037-05-19
Also published as: CN108954031A

Abstract

An LED inflatable soft bulb is composed of a lamp holder, a driving circuit, an LED light source, a core column and a shell, and is characterized in that a light-transmitting bulb shell of the shell is a deformable soft bulb shell, namely an ultrathin plastic bulb shell with the thickness of 0.02mm to 0.6mm, and the air pressure in the bulb shell is higher than one atmospheric pressure. The bulb shell has the outstanding advantages that the bulb shell cannot be broken, and the potential safety hazard that glass fragments generated when the conventional glass bulb shell is broken can hurt people is avoided; the cold-frying air leakage which is difficult to completely eliminate by the glass bulb shell can not occur, and the reliability of the product is improved; particularly, the pressure in the bulb shell is higher than the atmospheric pressure, so that the ultrathin plastic bulb shell bulges outside and becomes hard, when the bulb leaks air, the atmospheric pressure in the bulb shell is reduced to the atmospheric pressure, the bulb shell becomes soft, and a user can automatically detect the leakage by pressing the bulb shell by hand to remove defective products. In addition, the cost of the bulb shell and the related process can be obviously reduced, so that the cost performance of the LED inflatable bulb is greatly improved.

Description

LED inflatable soft bulb

Technical Field

The invention relates to the field of semiconductor lighting sources, in particular to an LED inflatable soft bulb with a light-transmitting bulb shell capable of deforming.

Technical Field

At present, all bulb shells of LED inflatable bulbs are glass bulb shells, cannot deform under the action of external force, and only can break or be broken when the action of the external force is large. For example, LED filament lamps, which require a high thermal conductivity helium gas in the envelope and must be sealed against gas leakage, use an easily sealable glass bulb, glass stem and corresponding sealing and venting process similar to incandescent lamps (see patents: 2015107171744; 2016105719621; 2016100208583). However, the glass shell has the defects that the glass shell is easy to generate cold explosion air leakage and is easy to break when colliding, and the quality reliability and the use safety of products are seriously influenced. If the LED filament lamp leaks, the gas in the bulb shell is changed from helium gas with high heat conductivity into air with poor heat conductivity, so that the working temperature of the LED filament in the bulb is greatly increased, and the service life is accelerated. Unfortunately, no effective means is available so far to randomly and quickly detect the leakage of the LED filament lamp product, so that the LED filament lamp purchased by a user in the market cannot be guaranteed to be a good product without air leakage; in addition, the glass bulb shell is difficult to completely avoid damage in the transportation and use processes, so that products are scrapped, and the generated glass fragments are easy to hurt people to cause potential safety hazards. How can the above-mentioned disadvantages of the existing LED inflatable bulb be completely overcome?

Disclosure of Invention

In order to solve the problems that a glass shell of the existing LED inflatable bulb is easy to explode and leak gas, is damaged by collision, cannot randomly and quickly detect leakage of products and the like, the scheme of the invention is to change a light-transmitting bulb shell of the LED inflatable bulb into a soft bulb shell which can deform under the action of external force instead of the glass bulb shell, namely an ultrathin plastic bulb shell with the thickness of 0.02mm to 0.6mm, wherein the air pressure of high-heat-conductivity gas filled in the bulb shell is higher than one atmosphere and ranges from 1.01 atmosphere to 5.0 atmosphere. In order to ensure that the edges of the light-transmitting bulb shell and the core column are hermetically sealed, the core column is also changed into a corresponding plastic core column. The structure has the outstanding advantages that the whole shell of the bulb can not be exploded, leaked and broken, and the quality reliability and the use safety of the product are improved; more particularly, because the air pressure in the bubble shell is higher than one atmospheric pressure, the ultrathin plastic bubble shell is slightly bulged to be hard, once the air leakage occurs to the bulb, the air pressure in the bubble shell is automatically reduced to one atmospheric pressure, the bubble shell is then softened, and a user can easily and automatically pick up the leakage by pressing the bubble shell with hands to remove the bad products with the air leakage. In addition, the ultrathin plastic bulb shell can also obviously reduce the shell cost of the bulb and the corresponding production process cost, thereby comprehensively improving the cost performance of the LED inflatable bulb.

A specific structural scheme is as follows: the LED inflatable soft bulb consists of a lamp holder (1), a driving circuit (2), an LED light source (3), a core column (4) and a light-transmitting bulb shell (5), wherein the core column is a plastic core column; the light-transmitting bulb shell is an ultrathin plastic bulb shell with the thickness of 0.02mm to 0.6mm, which is manufactured by a blow molding or blister process, the working gas filled in the bulb shell is helium or mixed gas taking the helium as a main component, and the inflation pressure is selected from 1.01 atmosphere to 5.0 atmosphere; when the inflation cost is reduced and the power and the output luminous flux of the bulb are improved, helium can be changed into gas with higher heat conductivity, namely hydrogen or mixed gas taking hydrogen as a main component. Because of the hydrogen of ultra-thin plastics cell-shell in the cell-shell can not fly away the piece that has the lethality in case of exploding to effectively reduced the potential safety hazard of adopting hydrogen. Of course, it is generally safe to use as little hydrogen as possible. The inner surface and the outer surface of a light-transmitting bulb shell of the LED soft bulb can be smooth surfaces generally, and are the same as the glass bulb shell of the LED filament lamp; when the surface area needs to be increased to increase the heat dissipation effect and further increase the power and output luminous flux of the bulb, the inner surface and the outer surface of the light-transmitting bulb shell are changed into the surfaces with concave and convex distribution. In order to extend the operating life, the surface of the envelope of the lamp bulb may be coated with a coating that reduces the permeability of helium and hydrogen.

The light-transmitting bulb shell can be designed into a C35 candle bulb shell and a tail lamp bulb shell similar to an incandescent lamp, or a pear-shaped bulb shell or a mushroom-shaped bulb shell such as A50, A60 and A70; for larger power bulbs, the light-transmitting bulb envelope can be designed as a cylindrical bulb envelope or a spherical bulb envelope.

Drawings

Fig. 1 is a schematic structural diagram of the appearance of an LED soft bulb in embodiment 1 of the present invention; FIG. 2 is a schematic structural view of the outer form of example 2; FIG. 3 is a schematic structural view of the outer form of embodiment 3; FIG. 4 is a schematic structural view of the outer form of example 4;

FIG. 1 is a lamp base; 2 is a driving circuit; 3 is an LED light source; 4 is a stem; 5 is a light-transmitting cell shell;

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

Embodiment 1 of the invention is a 4W LED inflatable soft light bulb with a 60-type bulb shell, and the schematic diagram is as shown in fig. 1, and the LED inflatable soft light bulb is composed of a lamp holder (1), a driving circuit (2), an LED light source (3), a stem (4) and a light-transmitting bulb shell (5). Helium is filled in the bubble shell, and the air pressure is 1.2 atmospheres. The bulb shell of the inflatable bulb is an A60 type ultrathin plastic transparent bulb shell (the thickness does not include the adjacent area connected with the core column) which is made by a blow molding and blister molding process and has the thickness of 0.2mm to 0.3mm, and the inner surface and the outer surface of the bulb shell are smooth surfaces; the core column of the bulb is a plastic core column; the LED light source arranged on the plastic core column is a 4W double-spiral bead-connected LED luminous body. The lamp holder and the 4W driving circuit are not different from the corresponding conventional filament lamp product.

Example 2 is a 6W LED gas filled soft light bulb having a model a60 bulb envelope, the schematic view being shown in fig. 2. The bulb shell is filled with a mixed gas consisting of 55% of hydrogen and 45% of helium, and the air pressure is 1.2 atmospheres. The inner surface and the outer surface of the bulb shell are surfaces which are fully distributed with arc surface-shaped concave-convex surfaces; wherein the LED light source is a 6W multi-V-shaped bead-connected LED luminous body. The lamp cap and 6W driver circuit are similar to corresponding conventional filament lamp products. Otherwise, the same procedure as in example 1 was repeated.

Example 3 is a 2W LED gas filled soft light bulb having a C35 candle type bulb shell, a schematic view of which is shown in fig. 3. The LED light source is a 2W double-spiral bead-connected LED luminous body. The lamp holder and the 2W driving circuit are not different from the corresponding conventional filament lamp product. Otherwise, the same procedure as in example 1 was repeated.

Example 4 is a 15W white spherical envelope LED gas filled soft bulb having a diameter of 150mm, a schematic view as shown in fig. 4. The inner and outer surfaces of the ultrathin white plastic bubble shell with the thickness of 0.30mm to 0.35mm are smooth surfaces and are coated with coatings for reducing helium permeability. The LED light source is a 15W double-helix LED bead-connected luminous body, and the lamp cap and the 15W driving circuit are similar to those of a conventional product. Otherwise, the same procedure as in example 1 was repeated.

Claims

1. An LED inflatable soft bulb is composed of a lamp holder (1), a driving circuit (2), an LED light source (3), a core column (4) and a shell, and is characterized in that a light-transmitting bulb shell (5) of the shell is a deformable plastic soft bulb shell, namely an ultrathin plastic bulb shell with the thickness of 0.02mm to 0.6mm, the pressure of gas filled in the bulb shell is higher than one atmospheric pressure and ranges from 1.01 atmospheric pressure to 5.0 atmospheric pressure, the core column (4) is a plastic core column, when the atmospheric pressure in the bulb shell is higher than one atmospheric pressure, the ultrathin plastic bulb shell slightly bulges and becomes hard, when the bulb leaks, the atmospheric pressure in the bulb shell automatically decreases to one atmospheric pressure, the bulb shell is made to be soft, and the defective product which leaks can be detected by pressing the bulb shell with hands.

2. The LED inflatable soft bulb as claimed in claim 1, wherein the gas filled in the bulb is helium or a mixture gas with helium as a main component.

3. The LED gas-filled soft bulb as claimed in claim 1, wherein the gas filled in the bulb case is hydrogen gas or a mixture gas having hydrogen gas as a main component.

4. An LED inflatable soft light bulb as claimed in claim 1, wherein the inner and outer surfaces of the light-transmitting bulb shell of the outer shell are smooth surfaces.

5. An LED inflatable soft light bulb as claimed in claim 1, wherein the inner and outer surfaces of the light-transmitting bulb shell of the outer shell are concave and convex distributed surfaces, increasing the surface area.

6. An LED gas-filled soft bulb as recited in claim 1, wherein the inner and outer surfaces of the outer envelope have coatings that reduce the permeability of helium and hydrogen.