Decorative LED bulb and manufacturing method therefor

Abstract

To provide a decorative LED bulb capable of being decorated without depending on LED light emission control, and a manufacturing method therefor.SOLUTION: A vacuum LED bulb comprises an LED filament, and a glass bulb that protects the LED filament, where a clay layer with light transmissivity and light diffusion is formed over the entire surface of the glass bulb, and a pattern layer is formed on top of the clay layer. With a decorative LED bulb, the pattern layer is formed on top of the clay layer, making it possible to enjoy looking at the decorative LED bulb for a long period of time.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an LED electric light bulb and a manufacturing method thereof. [Background technology]

[0002] BACKGROUND ART Conventionally, a known decorative LED light bulb has a plurality of LED chips fixed to a wire, and the wire is bent to disperse the LED chips within a dome (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-132266 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with this decorative LED bulb, the LED light is controlled to decorate the bulb. This means that the LEDs are directly visible, which is not ideal for enjoying decoration. On the other hand, if the glass bulb is made milky white to diffuse the light, the light from each LED will mix, which will ruin the decorative effect. The present invention has been made based on the above circumstances, and aims to provide an LED light bulb that can be decorated without relying on LED light emission control, and a method for manufacturing the same. [Means for solving the problem]

[0005] The first method is A vacuum LED bulb comprising an LED filament and a glass bulb protecting the LED filament, This is an LED bulb with a characteristic that a clay layer with translucency and light diffusion properties is formed over the entire surface of the glass bulb, and a patterned layer is formed on top of the clay layer.

[0006] The second means is the first means, characterized in that the design layer is formed from acrylic paint.

[0007] The third means is the second means, characterized in that a transparent layer is formed on the clay layer and the pattern layer to prevent the clay layer and the pattern layer from drying out.

[0008] The fourth method is This is a manufacturing method for an illuminated LED bulb that decorates a vacuum LED bulb that includes an LED filament and a glass bulb that protects the LED filament, and is characterized in that a pattern is applied to the surface of a clay sheet, and the clay sheet is then attached to the entire surface of the glass bulb.

[0009] The fifth means is the fourth means, characterized in that the pattern is applied to the surface of the clay sheet with acrylic paint.

[0010] The sixth means is the fifth means, characterized in that after the clay sheet is attached to the glass sphere, a transparent paint is applied to prevent the clay sheet and the pattern from drying. [Effects of the Invention]

[0011] The LED bulb of the present invention has a clay layer formed on the entire surface, allowing it to emit a soft light similar to an incandescent bulb, even in areas without a patterned layer. Furthermore, because a patterned layer is formed on top of the clay layer, the LED bulb can be enjoyed for a long time. Furthermore, because the inside of the glass bulb is evacuated, the glass surface temperature does not rise when lit, and can be kept at a temperature that can be touched with the hand, preventing deterioration of the clay sheet and other components of the glass bulb. Furthermore, according to the method for manufacturing an LED illumination bulb of the present invention, the above LED illumination bulb can be easily manufactured. [Brief explanation of the drawings]

[0012] [Figure 1]FIG. 1 is a front view of an LED decorative light bulb according to an embodiment. [Figure 2] This is a front view of the vacuum LED bulb before decoration. [Figure 3] This is a diagram showing the surface condition of the glass bulb of an LED electric light bulb. [Figure 4] 1 is a diagram showing the manufacturing process of an LED light bulb. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, an LED light bulb according to an embodiment of the present invention will be described with reference to the drawings.

[0014] FIG. 1 is a front view of an LED illumination light bulb 10 according to an embodiment, and FIG. 2 is a front view of a vacuum LED light bulb 10A before decoration. This LED decorative bulb 10 includes a vacuum LED bulb 10A that includes an LED filament 11, a glass bulb 12 that protects the LED filament 11, and a base 13. The glass sphere 12 is transparent, and as shown in Figure 3, a clay layer 14 is formed on the surface of the glass sphere 12, a pattern layer 15 is formed on the clay layer 14, and a transparent layer 16 is further formed on the pattern layer 15.

[0015] The inside of the glass bulb 12 is a vacuum. By creating a vacuum in the glass bulb 12, the surface of the glass bulb 12 does not become hot when the LED is turned on, and it can be kept at a temperature that can be touched by hand. This prevents deterioration of the clay layer 14, the pattern layer 15, and the transparent layer 16, and makes the LED electric bulb 10 easier to handle.

[0016] Furthermore, the clay layer 14 is formed on the entire surface of the glass bulb 12. By forming this clay layer 14, the light from the LED can be converted into diffused light, creating a soft light similar to that of an incandescent bulb. It also prevents the light from the light source from directly entering the eyes. In addition, by forming the clay layer 14, it is possible to reduce the scattering of glass fragments when the glass bulb 12 breaks.

[0017] The pattern layer 15 is formed, for example, with acrylic paint. The use of acrylic paint allows the color of the clay underneath to show through, allowing the artist to create a picture that makes the most of the underlying color, just like watercolor paint. Acrylic paint films are also flexible and resistant to cracking, making them highly durable.

[0018] The transparent layer 16 is made of transparent paint. By providing this transparent layer 16, it is possible to prevent the clay layer 14 and the pattern layer 15 from drying out. For example, varnish is used as the transparent paint.

[0019] 《Manufacturing method》 (Creating clay sheet 14a) For example, a flat box-shaped mold is prepared, a certain amount of clay is placed in the mold, and the clay is stretched, pressed, and molded. At this time, a resin film may be placed on the mold to make it easier to remove the molded clay sheet 14a from the mold later. The finished clay sheet 14a may also have some irregularities. The slight irregularities can create a handmade feel. The clay for the clay sheet 14a is preferably wheat clay, silicon clay, oil clay, paper clay, oven clay or other clay that has translucency and light diffusion properties and has the ability to dry naturally and bond rather than being sintered.

[0020] (Drawing the design) Next, for example, a design image (picture) of flowers, plants, anime, or other designs is formed on the surface of the clay sheet. In this case, the design image 15a can be drawn using a printer while the clay sheet 14a is still in the mold. Alternatively, the design image 15a can be drawn on the clay sheet 14a by hand or screen printing. When drawn by hand or screen printing, predetermined areas can be overpainted. The design image 15a can also be drawn on the clay sheet 14a after it is removed from the mold. Alternatively, a board with letters or pictures engraved in reverse for printing can be pressed against the clay sheet 14a to transfer the letters or pictures to the clay sheet 14a, and paint can then be applied to the resulting grooves. The design image 15a to be drawn will be curved when it is attached to the spherical glass ball, so it is preferable to prepare a design image that takes this into consideration. The ink used to draw the design image 15a is not particularly limited, but is preferably acrylic paint, which is quick-drying and water-resistant. By using acrylic paint, the drawn image can be finished in a transparent watercolor style, or partially opaque by applying thick paint. By creating a color-coded pattern by sandwiching opaque lines, the LED light bulb 10 can be finished in a stained-glass style. The drying state of the clay when drawing the design has a significant impact on the quality of the finished work. Therefore, it is preferable to stabilize the colored surface by exposing the clay sheet 14a to a slight breeze.

[0021] (Attaching clay sheet 14a) The clay sheet 14a itself contains a certain amount of moisture, so it is attached to the glass sphere while the attachment surface is still soft. If necessary, an adhesive may be used. Attachment can be done by hand. When attaching the clay sheet 14a to the spherical glass sphere 12, the clay sheet 14a is cut to an appropriate size and shape and attached. This attachment is preferably performed over the entire surface of the glass sphere 12 without any gaps. When cutting the clay sheet 14a, it is preferable to prepare a die cutter that can be used to cut the clay sheet 14a into a shape that will automatically form a sphere when pasted together. For example, prepare a die cutter that can cut the clay sheet 14a into a boat-shaped multi-cone shape. Using such a die cutter, the clay sheet 14a can be cut to the appropriate size and shape and easily attached to the entire surface of the glass sphere 12. When the clay sheet 14a is attached, it is acceptable for the design to be misaligned to some extent, as this creates a handmade feel.

[0022] (clear paint adhesion) Finally, a transparent paint is applied to the surface of the painted clay sheet 14a. Varnish is used as the paint. Applying varnish prevents the painted clay sheet from drying out and protects the surface.

[0023] According to this manufacturing method for the LED illumination light bulb 10, the LED illumination light bulb 10 shown in FIG. 1 can be obtained. [Explanation of symbols]

[0024] 10. Decorative LED bulbs 10A vacuum LED bulb 11 LED filaments 12 Glass spheres 13. Base 14 Clay Layer 14a Clay Sheet 15 Picture layer 15a Design drawing 16 Transparent protective layer

Claims

1. A vacuum LED bulb comprising an LED filament and a glass bulb that protects the LED filament, An illuminated LED bulb characterized in that a clay layer having translucency and light diffusion properties is formed over the entire surface of the glass bulb, and a patterned layer is formed on top of the clay layer.

2. 2. The LED light bulb according to claim 1, wherein the pattern layer is formed of acrylic paint.

3. The LED light bulb according to claim 2, wherein a transparent layer is formed on the clay layer and the pattern layer to prevent the clay layer and the pattern layer from drying out.

4. A method for manufacturing an LED decorative bulb that decorates a vacuum LED bulb having an LED filament and a glass bulb that protects the LED filament, characterized in that a pattern is applied to the surface of a clay sheet, and the clay sheet is then attached to the entire surface of the glass bulb.

5. 5. The method for manufacturing an LED electric bulb according to claim 4, wherein the pattern is applied to the surface of the clay sheet using acrylic paint.

6. 6. The method for manufacturing an LED light bulb according to claim 5, wherein after the clay sheet is attached to the glass bulb, a transparent paint is applied to prevent the clay sheet and the pattern from drying.

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