KR101702214B1

KR101702214B1 - Light diffuser and manufacturing method of the same

Info

Publication number: KR101702214B1
Application number: KR1020150052197A
Authority: KR
Inventors: 백두산
Original assignee: 백두산
Priority date: 2015-04-14
Filing date: 2015-04-14
Publication date: 2017-02-02
Also published as: KR20160122400A

Abstract

The present invention relates to a diffusion port and a method of manufacturing the same. According to an embodiment of the present invention, there is provided a diffusing unit that is installed to surround an illumination unit including a light source, the diffusing unit having a lower side opened and a light source through which light is transmitted, And is formed so as to be turned upside down from the upper side of the outer circumferential surface to the open lower side so that the inner circumferential surface is exposed to the outside.
According to the diffuser and the method of manufacturing the same according to the embodiment of the present invention, the inner circumferential surface of the diffuser is exposed to the outside by applying pressure from the upper side of the outer peripheral surface of the diffuser, which is formed of the soft material, The parting line generated when the separator is separated is located inside the diffuser and is not exposed to the outside, so that the quality is excellent.

Description

[0001] The present invention relates to a diffuser and a manufacturing method thereof,

The present invention relates to a diffusion port and a method of manufacturing the same, and more particularly, to a diffusion port that is manufactured so that a parting line is not exposed to the outside by a simpler method, and a method of manufacturing the same.

Injection molded products containing curvature points on the exterior are exposed to parting lines. Particularly, when a product such as a sphere is manufactured, since an upper mold and a lower mold are generally required, when a mold is separated from a molded product, a parting line ) Is generated. Therefore, how to minimize parting lines through efficient design and design is an important factor in determining the quality of mass-produced products.

In the diffuser of the lighting device, the light emitted from the internal light source passes through the diffuser, so the presence or absence of the parting line is very important as compared with other products. In order to prevent the parting line from being exposed to the outside, a conventional diffuser is manufactured by injection molding a hemispherical diffusion hole having no curved point, blowing air into a material such as glass, and blow molding.

However, the conventional method of manufacturing a diffuser has a problem that it is impossible to design the bending point or more, or the design of the exact dimension is difficult and the bendable material is easily damaged.

Accordingly, there is a need for a diffuser which is manufactured so that the parting line is not exposed to the outside in a simpler manner, and a manufacturing method thereof is excellent.

SUMMARY OF THE INVENTION The present invention has been developed in order to solve the problems described above, and it is an object of the present invention to provide a diffuser, which is made of a soft material, to apply pressure from the upper side of the outer peripheral surface to the open lower side so that the inner peripheral surface of the diffuser is exposed to the outside And the parting line is manufactured so that the parting line is not exposed to the outside by a simpler method, and the quality is excellent, and a manufacturing method thereof.

The technical problem of the present invention is not limited to those mentioned above, and another technical problem which is not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a diffuser according to an embodiment of the present invention, which is installed to surround an illuminating unit including a light source and transmits light of the light source and opens downward, And the outer peripheral surface of the outer mold is pressurized from the upper side to the open lower side so that the inner peripheral surface is turned upside down so as to be exposed.

In this case, the diffuser is formed of a soft material and is detachably coupled to the upper portion of the illumination unit.

The outer mold has an upper mold having a shape corresponding to an upper portion of the inner mold and having an upper filling space spaced apart from an outer circumferential surface of the inner mold when the upper mold is coupled to the upper mold, And a lower mold space having a shape corresponding to the inner mold and spaced apart from the outer circumferential surface of the inner mold when the lower mold is coupled to the lower mold.

According to another aspect of the present invention, there is provided a method of manufacturing a diffuser, comprising the steps of: forming a diffuser through which light from the light source is transmitted, The method comprising the steps of: providing an inner mold for the inner mold, the outer mold having a shape corresponding to the inner mold, and dividing the inner mold into a plurality of divided outer molds; A step of forming a space, a step of injecting a molding material into the filling space, a step of cooling the molding material, a step of separating the outer mold from the diffuser formed by cooling the molding material, Removing the diffusion port from the mold and applying pressure to the lower side opened from the upper side of the outer peripheral surface of the diffusion port Characterized in that it comprises a step to reverse so that the exposed inner peripheral surface of the diffusion spheres.

The details of other embodiments are included in the detailed description and drawings.

According to the diffuser and the method of manufacturing the same according to the embodiment of the present invention, the inner circumferential surface of the diffuser is exposed to the outside by applying pressure from the upper side of the outer peripheral surface of the diffuser, which is formed of the soft material, The parting line generated when the separator is separated is located inside the diffuser and is not exposed to the outside, so that the quality is excellent.

Further, according to the lighting apparatus according to the embodiments of the present invention, since the diffuser is formed of a soft material and is detachably coupled to the upper portion of the illuminating unit, an elastic force acts inwardly and downwardly on the coupled diffuser, The diffusion port can be easily separated from the illumination portion by only moving the diffusion port upward, and the diffusion port can be easily taken out from the inner mold at the time of injection molding.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view schematically showing a structure of a lighting apparatus using a diffuser according to an embodiment of the present invention.
2 is a cross-sectional view schematically showing a structure of a lighting apparatus using a diffuser according to an embodiment of the present invention.
3 is a flowchart showing a method of manufacturing a diffuser according to an embodiment of the present invention.
4 is a longitudinal sectional view showing the structure of an inner mold and an outer mold for manufacturing a diffuser according to an embodiment of the present invention.
5 is a longitudinal sectional view showing a state in which the inner circumferential surface of the diffuser is exposed to the outside in the method of manufacturing the diffuser according to the embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

In the following description of the embodiments of the present invention, descriptions of techniques which are well known in the technical field of the present invention and are not directly related to the present invention will be omitted. This is for the sake of clarity of the present invention without omitting the unnecessary explanation.

For the same reason, some of the components in the drawings are exaggerated, omitted, or schematically illustrated. Also, the size of each component does not entirely reflect the actual size. In the drawings, the same or corresponding components are denoted by the same reference numerals.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described with reference to the drawings for explaining the diffuser and its manufacturing method according to the embodiments of the present invention.

FIG. 1 is a perspective view schematically showing a structure of a lighting apparatus using a diffuser according to an embodiment of the present invention, FIG. 2 is a sectional view schematically showing the structure of a lighting apparatus using a diffuser according to an embodiment of the present invention to be.

1 and 2, the lighting apparatus 1 may be configured to include a light source 10, an illumination unit 20, and a diffuser 30. The light source 10 may emit light to the outside according to the supply of power, and may be a light emitting diode (LED), a liquid crystal display (LCD), an organic light emitting diode (OLED), a filament, or a neon. The illumination unit 20 may be installed so as to surround all or a part of the light source 10, and may be provided with its upper side opened.

The diffuser 30 according to an embodiment of the present invention may be installed to surround the illumination unit 20 including the light source 10 and may be provided with the light source 10 transmitting light and opening downward. Further, the diffusion port 30 may be formed of a soft material and detachably coupled to the upper portion of the illumination portion 20. [ At this time, the diffusion port 30 may be made of soft rubber, silicone, soft plastic or the like. 2 (a), when the diffuser 30 is coupled to the upper portion of the illuminating unit 20 having a larger circumference, since the diffuser 30 is formed of a soft material, It can be stretched in the circumferential direction. Therefore, as shown in FIG. 2 (b), the diffuser 30 coupled to the illuminating unit 20 can be more firmly coupled by an elastic force acting inward and downward. Further, when the user moves the diffuser 30 coupled to the illuminating unit 20 upward, the diffuser 30 can be easily separated from the illuminating unit 20. Therefore, when the diffusing port 30 is damaged or another diffusing port 30 is desired to be used, it is possible to use only the diffusing port 30 for replacement.

Hereinafter, a method of manufacturing the diffuser 30 according to an embodiment of the present invention will be described in detail with reference to FIGS. 3 to 5. FIG.

FIG. 3 is a flow chart showing a method of manufacturing a diffuser according to an embodiment of the present invention, FIG. 4 is a longitudinal sectional view showing a structure of an inner mold and an outer mold for manufacturing a diffuser according to an embodiment of the present invention, 5 is a longitudinal sectional view showing a state in which the inner circumferential surface of the diffuser is exposed to the outside in the method of manufacturing the diffuser according to the embodiment of the present invention.

3, an inner mold (not shown) for molding the diffuser 30, which is installed to surround the illumination unit 20 including the light source 10 and through which the light from the light source 10 is transmitted, 100) (S110). After the inner mold 100 is provided (S110), the outer mold 200 having a shape corresponding to the inner mold 100 and divided into a plurality of outer molds 200 may be provided (S120).

As shown in FIG. 4A, the outer mold 200 may include an upper mold 210 and a lower mold 220. The upper mold 210 has a shape corresponding to the upper portion of the inner mold 100 and can be coupled to the upper portion of the inner mold 100. When the inner mold 100 has a substantially spherical shape, the upper mold 210 has an upper mold body 211 having a substantially rectangular parallelepiped shape and a substantially hemispherical upper space 212 May be formed. When the upper space 212 of the upper mold 210 is coupled to the upper portion of the inner mold 100, the upper space 212 of the upper mold 210 and the upper space 212 of the upper mold 210, (213) may be formed.

The lower mold 220 has a shape corresponding to the lower portion of the inner mold 100 and can be coupled to the lower portion of the inner mold 100. [ When the inner mold 100 has a substantially spherical shape, the lower mold 220 has a substantially rectangular parallelepiped lower mold body 221 and a substantially hemispherical lower space 222 at the center of the upper end of the lower mold body 221 May be formed. When the lower space 222 of the lower mold 220 is coupled to the lower portion of the inner mold 100, a lower filling space 222 is formed between the outer surface of the inner mold 100 and the lower space 222 of the lower mold 220. [ (223) may be formed.

When the outer mold 200 is divided into the upper mold 210 and the lower mold 220, the diffusion hole 30 having a substantially spherical shape can be easily manufactured. Although the outer mold 200 is divided into the upper mold 210 and the lower mold 220 in the present invention, the outer mold 200 is not limited thereto, The number of portions, the shape of the coupling, and the like can be changed by any person skilled in the art. For example, the outer mold 200 may be divided into left and right molds and may be formed of a left mold and a right mold. Also, although not shown, at least one injection port (not shown) through which the molding material for injection molding the diffusion port 30 is injected into the outer mold 200 may be formed.

3, steps S110 and S120 for forming (forming) the inner mold 100 and forming (forming) the outer mold 200 are sequentially performed. However, (Making) the outer mold 100 and forming (making) the outer mold 200 may be performed in the order of mutually different, or substantially simultaneously.

After the outer mold 200 is provided (S120), as shown in FIG. 4 (b), the inner mold 100 and the outer mold 200 are coupled to each other, The space 213 and the lower filling space 223 can be formed (S130). At this time, the upper mold 210 can be coupled with the lower mold 220 while the inner mold 100 is coupled to the lower mold 220 first. Conversely, the lower mold 220 may be coupled to the upper mold 210 while the inner mold 100 is first coupled to the upper mold 210.

3, after the inner mold 100 and the outer mold 200 are coupled with each other (S130), the molding material is injected through at least one injection port (not shown) formed in the outer mold 200, The lower filling space 213 and the lower filling space 223 can be filled with a molding material (S140). As described above, rubber, silicone, soft plastic, etc. having flexibility can be used as the molding material.

After the molding material is injected into the upper filling space 213 and the lower filling space 223 (S140), the injected molding material may be cooled (S150). Thereafter, the outer mold 200 can be separated from the diffusion tool 30 formed by cooling the molding material (S160).

Thereafter, the diffusion tool 30 can be taken out from the inner mold 100 (S170). At this time, since the diffusion port 30 is formed of a flexible material and has elasticity, the user can easily take out the diffusion port 30 from the inner mold 100 only by moving the diffusion port 30 upward .

5 (a), the diffuser 30 injected through the inner mold 100 and the outer mold 200 generates a parting line 30a on the outer circumferential surface thereof. Since the outer mold 200 is divided into the upper mold 210 and the lower mold 220 when the outer mold 200 contacting the outer circumferential surface of the diffuser 30 is separated during injection molding, And a parting line 30a is formed along the divided surface of the lower mold 220. [ On the other hand, since the inner mold 100 is formed integrally without being divided, a parting line 30a is not formed on the inner circumferential surface of the diffuser 30 contacting the inner mold 100 during injection molding.

3, after the diffusion tool 30 is taken out from the inner mold 100 (S170), a pressure P is applied from the upper side of the outer peripheral surface of the diffusion tool 30 to the lower side thereof, (S180). 5 (a), when the pressure P is applied downward in a state where the parting line 30a generated on the outer peripheral surface of the diffusion port 30 is exposed to the outside, as shown in FIG. 5 (b) The diffuser 30 is turned upside down by the pressure P so that the parting line 30a is positioned inside the diffuser 30 and is not exposed to the outside.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And is not intended to limit the scope of the invention. It is to be understood by those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

Description of the Related Art
1: Lighting fixture
10: light source 20:
30: spreading port 30a: parting line
100: inner mold 200: outer mold
210: upper mold 211: upper mold body
212: upper space 213: upper filling space
220: lower mold 221: lower mold body
222: lower space 223: lower filling space

Claims

A diffuser which is installed to surround an illuminating unit including a light source and transmits light of the light source and is detachably coupled to an upper portion of the illuminating unit by opening the lower side,
The diffusion port
A molding material having ductility is injected into a filling space formed by coupling an inner mold and an outer mold formed by dividing a plurality of molds,
After the molding material is cooled, the mold is separated from the outer mold, and the open lower side is taken out from the inner mold and pressure is applied from the upper side of the outer peripheral surface to the lower open side so that the inner peripheral surface is turned upside down so as to be exposed to the outside &Lt; / RTI >

delete

The method according to claim 1,
Wherein the outer mold comprises:
An upper mold having a shape corresponding to an upper portion of the inner mold and having an upper filling space spaced from an outer circumferential surface of the inner mold when the upper mold is coupled to the upper mold; And
And a lower mold having a shape corresponding to a lower portion of the inner mold and having a lower filling space spaced from an outer circumferential surface of the inner mold when the lower mold is coupled to the lower portion of the inner mold.

Providing an inner mold for surrounding the illumination unit including the light source and for forming a diffusion hole through which the light from the light source is transmitted and the lower side is opened and detachably coupled to the upper portion of the illumination unit;
Providing an outer mold having a shape corresponding to the inner mold and divided into a plurality of outer molds;
Forming a filling space spaced from an outer peripheral surface of the inner mold by coupling the inner mold and the outer mold;
Injecting a molding material having ductility into the filling space;
Cooling the molding material;
Separating the outer mold from the diffuser formed by cooling the molding material;
Extending the lower open side of the diffuser to take out the diffuser from the inner mold; And
Applying a pressure from an upper side of the outer circumferential surface of the diffuser to an open lower side of the diffuser so that the inner circumferential surface of the diffuser is exposed to the outside.

delete

5. The method of claim 4,
Wherein the outer mold comprises:
An upper mold having a shape corresponding to an upper portion of the inner mold and having an upper filling space spaced from an outer circumferential surface of the inner mold when the upper mold is coupled to the upper mold; And
And a lower mold having a shape corresponding to a lower portion of the inner mold and having a lower filling space spaced from an outer circumferential surface of the inner mold when the lower mold is coupled to the lower portion of the inner mold.