LED filament bulb lamp

Abstract

The utility model relates to a light-emitting diode (LED) filament bulb lamp, which comprises a luminous body, a bulb shell and a lamp holder, the end part of the bulb shell is connected with the lamp holder, the luminous body electrically connected with the lamp holder is arranged in the bulb shell, a reflective film or paper is paved on a sealing opening of the closing end of the bulb shell in the lamp holder, and the inner side of the opening end of the lamp holder is connected with the periphery of the closing end of the bulb shell after being dried and cured by daub. Reflecting films or paper, such as aluminum films, micro-prism reflecting films, glass bead reflecting films, aluminum reflecting paper, silver-plated reflecting paper or highlight white reflecting paper, is laid on a sealing opening of the closing-up end of the lamp holder and the bulb shell, so that the reflecting effect of light and the uniformity of light spots are improved, and the lighting effect is improved through the reflecting paper or the films after the light-emitting body is lightened. The closed space formed in the bulb is filled with the high-thermal-conductivity gas, so that the heat dissipation performance of the LED filament bulb lamp is improved, the service life of the LED filament is prolonged, and the stability of the LED filament is improved; the LED filament bulb lamp has the advantages of being efficient, energy-saving and environment-friendly, and compared with a traditional lamp, a large amount of energy can be saved, and carbon emission can be reduced.

Description

Technical Field

[0001] The utility model relates to a lamp, in particular to an LED filament bulb lamp. Background Art

[0002] As an important form of modern lighting technology, LED filament bulbs are gradually replacing traditional incandescent and fluorescent lamps with their high efficiency, energy saving and environmental protection, becoming the mainstream product in the lighting market. LED filament bulbs are mainly composed of luminous body, bulb shell, driving power supply and lamp holder. The luminous body is the core part of the lamp, which is responsible for converting electrical energy into light energy.

[0003] In the traditional design of LED filament bulbs, the light emitter usually includes an LED chip and a corresponding circuit structure, which is powered by a driving power supply to make the LED chip emit light. However, this design has some problems in practical applications. For example, in order to improve the lighting effect of LED filament bulbs, it is usually necessary to set a reflective structure inside the bulb shell to reflect the light emitted by the LED chip and improve the utilization rate of light. However, the traditional reflective structure design may have problems such as poor reflection effect and uneven light spot. Summary of the invention

[0004] In order to solve the technical problems in the background technology, an LED filament bulb is provided. In order to improve the lighting effect, a reflective film or paper is arranged inside the lamp holder to reflect the light source, increase the utilization rate of light and the lighting effect; in addition, the inside or outside of the bulb shell is also coated with an optical reflective coating to further enhance the reflection effect of light and improve the reflection effect of light and the uniformity of light spot.

[0005] The utility model is implemented in this way, providing an LED filament bulb lamp, comprising a light-emitting body, a bulb shell and a lamp holder, wherein the end of the bulb shell is connected to the lamp holder, the light-emitting body electrically connected to the lamp holder is placed in the bulb shell, the closed end of the bulb shell in the lamp holder is sealed with a reflective film or paper, and the inner side of the open end of the lamp holder and the outer side of the closed end of the bulb shell are connected after being dried and solidified by glue.

[0006] Furthermore, the luminous body includes a stem and a plurality of LED filaments, the upper end of the stem is hot-melted to the closed end of the bulb shell, the reflective film or paper is arranged on the upper side of the stem and the closed end of the bulb shell in the lamp holder, the lower end of the stem extends into the bulb shell, a plurality of LED filaments are arranged around the end or around the lower end of the end, the stem and the inner cavity of the bulb shell form a closed space, the two extreme ends of each LED filament connected in series pass through the stem and are electrically connected to the lamp holder to form a loop,

[0007] Furthermore, a driving power supply is arranged in the lamp holder, and the two extreme ends of each LED filament connected in series and in parallel pass through the stem and are electrically connected to the lamp holder via the driving power supply to form a loop, and the reflective film or paper is placed between the driving power supply and the closing end of the bulb shell, and is close to the closing end of the bulb shell.

[0008] Furthermore, the reflective film or paper is aluminum film, micro-prismatic reflective film, glass bead reflective film, aluminum reflective paper, silver-coated reflective paper or high-gloss white reflective paper.

[0009] Furthermore, the light-emitting body also includes a current-limiting resistor, and the two extreme ends of each LED filament connected in series and in parallel are connected in series with at least one current-limiting resistor and then electrically connected to the lamp holder to form a loop.

[0010] Furthermore, the current limiting resistor is located in the lamp holder and is connected in series to the positive terminal circuit.

[0011] Furthermore, the enclosed space is filled with a gas with high thermal conductivity.

[0012] Furthermore, the center of the reflective film or paper is convex or concave toward the light source.

[0013] Furthermore, an optical reflective coating is coated inside or outside the bulb shell on one side of the closed end.

[0014] Compared with the prior art, the LED filament bulb lamp described in the utility model is sealed with a reflective film or paper between the lamp holder and the closed end of the bulb shell, such as aluminum film, microprism reflective film, glass bead reflective film or other reflective film or aluminum reflective paper, silver-plated reflective paper, high-gloss white reflective paper and other reflective paper, which improves the reflection effect of light and the uniformity of light spots, so that after the light-emitting body is lit, the lighting effect is increased through the reflective paper or film on the top of the light-emitting body; the high thermal conductivity gas filled in the enclosed space formed in the bulb improves the heat dissipation performance of the LED filament bulb lamp, and increases the service life and stability of the LED filament; the LED filament bulb lamp is high-efficiency, energy-saving and environmentally friendly, and can save a lot of energy and reduce carbon emissions compared with traditional lamps. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic cross-sectional structure diagram of the LED filament bulb described in Example 1 of the utility model;

[0016] Figure 2 A schematic diagram of the main structure of the LED filament bulb described in Example 1 of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the LED filament bulb described in Example 2 of the utility model. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] Example 1: Please refer to Figure 1 as well as Figure 2 As shown, the utility model is an LED filament bulb lamp, comprising a light-emitting body 1, a bulb shell 2 and a lamp holder 4, wherein the end of the bulb shell 2 is connected to the lamp holder 4, and the light-emitting body 1 electrically connected to the lamp holder 4 is placed in the bulb shell 2, and the closed end of the bulb shell 2 in the lamp holder 4 is sealed with a reflective film or paper 5, and the inner side of the open end of the lamp holder 4 and the outer periphery of the closed end of the bulb shell 2 are connected by glue 6 after drying and curing. The reflective film or paper 5 is used in the bulb to reflect the light source and improve the lighting effect of the bulb. In this case, the selected reflective film or paper 5 should have the following characteristics: it should have a high reflectivity so as to be able to reflect the light emitted by the bulb to the greatest extent, reduce the loss of light, provide a better lighting effect, and make the light of the bulb brighter and more concentrated; the selected reflective paper should have good high temperature resistance to withstand the heat generated by the bulb without deformation or damage; it should have good optical uniformity and transparency to ensure that the light can be evenly reflected and scattered, and improve the uniformity and brightness of the lighting effect.

[0020] Reflective film is aluminum film, micro-prismatic reflective film or glass bead reflective film; aluminum film is a common reflective material with high reflectivity and good weather resistance. Aluminum film can reflect most of the light irradiated on it back to increase the luminous flux of the bulb; micro-prismatic reflective film uses tiny prism structure to reflect light from all angles to achieve wide-angle reflection. This reflective film has very high reflective efficiency and can significantly increase the luminous flux of the bulb; glass bead reflective film is coated with a layer of tiny glass beads on the surface of the film, so that the light is reflected on the surface of the glass beads. This reflective film has good reflective effect and weather resistance, and is often used to make traffic signs and warning signs.

[0021] Reflective paper is aluminum reflective paper, silver-coated reflective paper or high-gloss white reflective paper. Aluminum reflective paper is a common reflective material with high reflectivity and good high temperature resistance. It can effectively reflect light and improve the lighting effect of the bulb; silver-coated reflective paper improves the reflectivity and optical properties by coating a layer of silver film on the surface of the paper. It has good high temperature resistance and is suitable for use in bulbs; high-gloss white reflective paper uses a special coating treatment with high reflectivity and good optical properties. It can evenly reflect light and improve the lighting effect of the bulb.

[0022] The specific type of reflective film or reflective paper should be selected based on the specifications of the bulb, working conditions and use environment. When installing and using reflective paper, its compatibility and safety with the bulb should be ensured to avoid adverse effects on the normal operation and service life of the bulb.

[0023] The light-emitting body 1 comprises a stem 11 and a plurality of LED filaments 12, wherein the light-emitting body 1 is composed of the stem 11 and a plurality of LED filaments 12, wherein the filaments are connected in series and in parallel and then electrically connected to the lamp holder through the stem to form a complete circuit loop. The upper end of the stem 11 and the closed end of the bulb shell 2 are hot-fused together, the reflective film or paper 5 is arranged on the upper side of the stem 11 and the closed end of the bulb shell 2 in the lamp holder 4, the lower end of the stem 11 extends into the bulb shell 2, and a plurality of LED filaments 12 are arranged around the end or around the lower side of the end, the stem 11 and the inner cavity of the bulb shell 2 form a closed space 10, the two extreme ends 13 of each LED filament 12 connected in series and in parallel pass through the stem 11 and are electrically connected to the lamp holder 4 to form a loop, a driving power supply 3 is arranged in the lamp holder 4, the two extreme ends 13 of each LED filament 12 connected in series and in parallel pass through the stem 11 and are electrically connected to the lamp holder 4 via the driving power supply 3 to form a loop, the reflective film or paper 5 is placed between the driving power supply 3 and the closed end of the bulb shell 2, and is close to the closed end of the bulb shell 2. The enclosed space 10 is filled with a high thermal conductivity gas, so that heat can be transferred more effectively, thereby helping the heat generated by the light-emitting body 1 during operation to be dissipated to other parts of the bulb more quickly, helping to maintain a stable operating temperature of the filament and preventing performance degradation or damage caused by overheating. The center of the reflective film or paper 5 is convex or concave toward the light source. When the center part of the reflective film or paper is convex, it increases the reflection area of ​​the light source irradiating the convex part, thereby enhancing the effect of reflecting light; the convex shape helps to diffuse the reflected light to a wider angle, so that the reflective effect can be seen in a wider field of view. The concave design concentrates the light of the light source in a smaller area, thereby enhancing the reflective brightness of the area. In contrast to the convex design, the concave design helps to reduce the scattering of light, making the reflected light more concentrated and brighter.

[0024] The bulb 2 is coated with an optical reflective coating 7 on the inside or outside of one side of the closed end. The reflective coating 7 effectively reflects the light emitted by the filament, redirects the light that may have been lost, and increases the utilization rate of the light. By facing the reflective surface to the filament, the reflected light is more concentratedly projected to the area that needs to be illuminated, thereby enhancing the lighting effect. The reflective coating can also scatter the light, making it softer and reducing the glare, thereby protecting the eyes.

[0025] Example 2: Reference Figure 3The light-emitting body 1 also includes a current-limiting resistor 8. After the two ends 13 of each LED filament 12 are connected in series and parallel, at least one current-limiting resistor is connected in series and then electrically connected to the lamp holder 4 to form a loop. Therefore, the driving power supply 3 can be omitted in the lamp holder to simplify the structure of the bulb and reduce production costs. In order to ensure stable operation and good lighting effects of the LED filament in the absence of a driving power supply. This is achieved by carefully selecting and designing the current-limiting resistor and other circuit elements. The current-limiting resistor 8 is preferably set on the positive terminal line 131 in the lamp holder or on the live wire access line.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An LED filament bulb lamp, comprising a light-emitting body (1), a bulb shell (2) and a lamp holder (4), wherein the end of the bulb shell (2) is connected to the lamp holder (4), and the light-emitting body (1) electrically connected to the lamp holder (4) is placed in the bulb shell (2), characterized in that: The closed end of the bulb shell (2) in the lamp holder (4) is sealed with a reflective film or paper (5), and the inner side of the open end of the lamp holder (4) and the outer side of the closed end of the bulb shell (2) are connected by glue (6) after being dried and solidified.

2. The LED filament bulb according to claim 1, characterized in that: The light-emitting body (1) comprises a stem (11) and a plurality of LED filaments (12); the upper end of the stem (11) and the closed end of the bulb shell (2) are hot-fused together; the reflective film or paper (5) is arranged on the upper side of the closed end of the stem (11) and the bulb shell (2) in the lamp holder (4); the lower end of the stem (11) extends into the bulb shell (2); a plurality of LED filaments (12) are arranged around the end or around the lower end of the end; the stem (11) and the inner cavity of the bulb shell (2) form a closed space (10); the two extreme ends (13) of the LED filaments (12) connected in series and parallel pass through the stem (11) and are electrically connected to the lamp holder (4) to form a loop.

3. The LED filament bulb according to claim 1, characterized in that: A driving power source (3) is arranged in the lamp holder (4); two ends (13) of the LED filaments (12) connected in series and in parallel pass through the stem (11) and are electrically connected to the lamp holder (4) via the driving power source (3) to form a loop; the reflective film or paper (5) is placed between the driving power source (3) and the closed end of the bulb shell (2), and is closely attached to the closed end of the bulb shell (2).

4. The LED filament bulb according to claim 1, characterized in that: The reflective film or paper (5) is aluminum film, micro-prismatic reflective film, glass bead reflective film, aluminum reflective paper, silver-coated reflective paper or high-gloss white reflective paper.

5. The LED filament bulb according to claim 1, characterized in that: The light-emitting body (1) further comprises a current-limiting resistor, and the two ends (13) of each LED filament (12) connected in series and in parallel are connected in series with at least one current-limiting resistor (8) and then electrically connected to the lamp holder (4) to form a loop.

6. The LED filament bulb lamp as claimed in claim 5, characterized in that: The current limiting resistor (8) is located inside the lamp holder (4) and is connected in series to the positive terminal circuit (131).

7. The LED filament bulb lamp according to claim 2, characterized in that: The enclosed space (10) is filled with a gas with high thermal conductivity.

8. The LED filament bulb according to claim 1, characterized in that: The center of the reflective film or paper (5) is convex or concave toward the light source.

9. The LED filament bulb lamp according to claim 1, characterized in that: An optical reflective coating (7) is coated on the inside or outside of one side of the closed end of the bulb shell (2).

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