KR101478409B1 - Lighting Apparatus and Filter therefor - Google Patents

Abstract

A lighting device is disclosed. The illumination apparatus of the present invention can emit light to a surface (or a space) to be illuminated, and can image the shape of the illuminating section into a desired image. To this end, the illumination device includes a light source portion, a condenser lens portion, a filter portion, and an imaging lens portion. The filter portion 313 includes a filter that selectively transmits light to form an image, and a filter support portion that supports and fixes the filter to the housing. The filter supporting portion has a structure in which the coupling direction of the filter is fixed by engaging with the filter at at least three points, and the filter is not separated from the filter supporting portion in the course of drawing out the filter portion from the housing.

Description

FIELD OF THE INVENTION The present invention relates to a filter for a lighting apparatus,

The present invention relates to an illumination device capable of illuminating a space brightly and imaging a shape of an illuminated part and a filter for the illumination device.

Recent lighting equipment is not only a simple lighting but also a beautiful design. It also plays a role of interior design in the form of spot lighting or partial lighting.

The applicant has received the Korean Registered Patent No. 1140384 by making an invention relating to a lighting device which can be used for interior decoration, advertisement or event. The registered lighting device is not a lighting device for simply illuminating a certain room or part of a dark indoor or outdoor area in the form of a face or a dot, but a pattern or pattern of a specially designed part So as to perform not only the function as a lighting device but also the role of interior accessories and advertising media.

Fig. 1 shows a lighting device of the applicant's patent No. 1140384, and Fig. 2 shows a transparent film (hereinafter referred to as a filter portion) used in the lighting device of Fig.

1 and 2, a conventional illumination device 100 includes a housing 110, a light source 120, a heat sink 130, a reflector 140, a transmission membrane (filter) 150, a wave guide 160 , And a lens 170. [

The light emitted from the light source unit 120 inside the housing 110 is first imaged by the filter 150 while passing through the filter 150 and then guided to the lens 170 by the waveguide 160, And is emitted through the lens 170. The light emitted from the illumination device 100 is imaged with the image of the filter 150 to illuminate the surface (wall surface, screen, etc.). In other words, the shape of the portion brightly illuminated by the light in the dark place has the image shape of the filter 150. The user can implement various image illumination by replacing the filter 150 mounted on the housing 110, that is, by changing the design of the filter 150.

In this process, the cone-shaped reflector 140 is applied so that the light emitted from the light source unit 120 does not diverge but converges toward the lens 170. However, when the light is scattered by the reflector 140, There arises a problem that the illumination due to the light is not uniform.

2, the filter 150 is supported by the filter supporting portion 151 and inserted into the filter insertion groove formed in the housing 110. As shown in FIG. The filter 150 mounted on the filter insertion groove should be fixed so that the illumination device 100 is not detached even when the illumination device 100 is tilted and must be easily detached when the user intends to replace the filter 150 to change the design. The patent of which the applicant is registered in the form of FIG. 1 is in need of further improvement with respect to the fitting and detachment of the filter 150.

An object of the present invention is to provide a lighting device which can be used for interior decorating, advertisement, event or the like by imaging the shape of a part to be illuminated, and a filter used in the lighting device.

Further, another object of the present invention is to provide a lighting apparatus which is capable of solving the problem that (1) the illumination by the emitted light is not uniform, (2) the problem that the filter is not easily drawn out from the housing, And a filter for use in the lighting apparatus.

According to an aspect of the present invention, there is provided an illumination apparatus including a light source, a condensing lens unit having at least one lens for condensing light emitted from the light source, a transparent member for selectively transmitting light emitted from the light source, A condenser lens unit, a filter unit, and an image-forming lens, wherein the light source, the filter unit, and the image-forming lens are accommodated in the slit Slit-shaped filter unit insertion grooves are formed on the outer surface of the housing, and the filter unit is inserted into or withdrawn from the inside of the filter unit.

Here, the condensing lens unit may include two plano-convex lenses having a flat plane of light incidence and an outgoing plane of spherical or aspherical convex lenses; And a convex lens provided between the plano-convex lens and the filter unit.

In addition, the filter unit includes a flat plate filter having the transparent image area formed thereon, and a filter support unit. The filter supporting portion is formed to fit the outer periphery of the filter and supports the filter by engaging with the filter, and has a coupling member for coupling to the lighting device.

The filter support unit includes first to third fixing protrusions facing the coupled filter, first to third fixing grooves are formed in the filter along the outer periphery of the filter to support the fixing protrusions, The first fixing protrusion is disposed to be biased from the center of the filter supporting portion to fix the direction of the filter.

According to another embodiment, both side portions of the filter facing both ends of the filter support portion are shaped to be spaced apart from the filter support portion, and the filter support portion is resilient so that when the external force acts on both ends of the filter support portion, The second fixing groove and the third fixing groove disposed on the side can be pressed onto the second fixing projection and the third fixing projection. This solves the problem that when the filter portion is pulled out of the housing, the filter is detached from the filter support portion and remains inside the housing.

According to another embodiment, the lighting apparatus of the present invention further comprises a partial housing rotatably coupled to the housing while forming a part of the housing, wherein the filter unit insertion groove is formed in the partial housing, The entire filter unit can be rotated. This makes it possible to adjust the direction of the filter portion even when the housing rotatably coupled to the pedestal rotates in a specific direction.

The illumination device of the present invention can basically image the shape of the illuminated part with the image of the filter (or transmissive film), and can be applied to various purposes such as decorating or transmitting a message beyond the function of simple illumination.

Although the light emitted from the light source is imaged and illuminated in a predetermined filter design, the illumination device of the present invention provides illumination with uniform and sufficient intensity illumination.

In addition, the filter of the illumination device of the present invention is designed to be very easy to attach and detach, and a structure has been applied so that the front, rear, and left and right sides are not changed even when the filter is fitted to the filter support.

In addition, the housing body rotatably coupled to the support member has a structure rotatable for convenience of use, but also limits the rotation angle thereof, thereby solving the problem of twisting power lines inside.

1 shows a lighting device of applicant ' s patent 1140384,
Fig. 2 is a view showing a transmissive film (filter) used in the illuminating device of Fig. 1,
3 is a perspective view of a lighting apparatus according to the present invention,
4 is a cross-sectional view of the illumination device of the present invention, and
5 is a view showing the filter unit of the present invention.
** Explanation of symbols **
300: lighting device 301: housing
301a: filter portion insertion groove 301b: partial housing
303: Base 305: Neck
307: Heat sink 309: Light source
311: condensing lens unit 311a, 311b: plane-convex lens
311c: convex lens 313: filter portion
315: waveguide 317: imaging lens
319: Image forming lens supporting member 501: Filter
501a: Both sides (cut surface) 501b: Transparent image area
501c, 501d, and 501e:
503: Filter support part 503a:
503b: fit-in slots 503c, 503d, 503e:
503f:

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail with reference to the drawings.

Fig. 3 is a perspective view of a lighting apparatus according to the present invention, and Fig. 4 is a sectional view of the lighting apparatus of the present invention.

3 and 4, a lighting apparatus 300 according to the present invention includes a housing 301, a pedestal 303 for supporting the housing 301, And a neck 305 connecting the first and second electrodes 302 and 303 in a reversible manner. A light source unit 309, a condenser lens unit 311, a filter unit 313, a waveguide 315 and an image forming lens 317 are provided in the housing 301.

The housing 301 shown in Figs. 3 and 4 has a generally cylindrical shape, but is not necessarily limited thereto. For example, the housing 301 may have the shape of a square pillar.

The light source unit 309 includes a light source and an electric circuit (or an electronic circuit), and emits the basic light of the illumination device to the condenser lens unit 311. As the light source applied to the light source unit 309, an LED or the like may be used, and a normal illumination lamp may also be used. The heat sink 307 provided at the lower end of the light source 309 absorbs the heat generated by the light source 309 and discharges the heat.

The light emitted from the light source unit 309 inside the housing 301 is condensed while passing through the condenser lens unit 311 and is incident on the filter unit 313. [ The condensing lens unit 311 may be configured in various forms. The condensing lens unit 311 illustrated in FIGS. 1 and 2 is configured by two plano-convex lenses 311a and 311b and one convex lens 311b in consideration of the spatial arrangement inside the housing 301, And a lens (Convex lens) 311c. The first and second plane-convex lenses 311a and 311b are lenses in which the plane of incidence is flat and the exit plane is formed of a spherical or aspherical convex lens. Light is condensed while the light source unit 309 is in close contact with the condensing lens unit 311 by using the planoconvex lenses 311a and 311b.

The light passing through the condensing lens unit 311 passes through the filter unit 313 and is imaged. The filter unit 313 is inserted into the housing 301 through the filter unit insertion groove 301a provided in the form of a slit along the outer surface of the housing 301 and is drawn out. The filter unit 313 will be described below again.

3, the filter unit 313 is disposed between the condenser lens unit 311 and the imaging lens 317, but is not limited thereto. For example, the filter section 313 may be disposed between the lenses of the condenser lens section 311. [

 The light having passed through the filter portion 313 is emitted through the image-forming lens 317. The image-forming lens 317 can be coupled to the housing 301 by a separate image-forming lens support member 319 and can be fixed to the housing 301 by screwing or sliding coupling between the image- The distance between the lens 317 and the condenser lens portion 311 can be adjusted. This distance adjustment can cause the image formed by the light to be focused on the surface when the emitted light strikes the surface.

The neck 305 has a structure for rotatably coupling the housing 301 to the pedestal 303 or allowing the housing 301 to freely move about the neck 305. For example, in order to rotatably engage the housing 301, the neck 305 has a rotation track formed in the base 303 in a circular shape. And the end of the housing 301 travels on the rotating track while being coupled to the rotating track. However, since the power source line for the lighting device 300 is connected to the light source unit 309 through the inside of the pedestal 303 and the neck 305, the rotation angle of the neck 305 is preferably set to an angle smaller than 360 ° To this end, a projection for preventing rotation on the rotary track may be provided.

3 and 4, the heat radiating plate 307, the light source unit 309, the condenser lens unit 311, the filter unit 313, the waveguide 315, and the imaging lens 317 are arranged in a line But the present invention is not limited thereto. For example, it is possible to provide the optical element 307 with the optical element 309, the light source 309, the condenser lens 311, the filter 313, the waveguide 315 and the image forming lens 317, A mirror, a light refractor, etc.) so that the optical path can be deformed in a form other than a straight line.

Hereinafter, the filter unit 313 will be described with reference to FIG. Referring to FIG. 5, the filter unit 313 includes a filter 501 and a filter support unit 503 for fixing and supporting the filter 501. 5A is a plan view of the filter unit 313 in which the filter 501 and the filter support unit 503 are combined, FIG. 5B is a plan view of the filter 501 and the filter support unit 503, (C) is a perspective view of the filter 501 and the filter support 503 separated from each other.

The filter 501 has the shape of a flat plate and forms an image by selectively transmitting light. To image the illumination, the filter 501 has a structure that transmits light only in the transparent image area 501b inside the flat plate and does not transmit light in the remaining part. Therefore, the illumination emitted from the illumination device 300 of the present invention is not a simple circular point or plane illumination but is a point or a surface illumination in the same shape as the image of the transparent image area 501b. In the example of FIG. 5, a transparent image area 501b having a star shape is illustrated by way of example, and the shape of the illumination finally emitted from the illumination device 300 is a star shape.

In order to form such a transparent image area, the filter 501 itself is formed of an opaque material, and only the transparent image area 501b is made of a transparent material, or only a part other than the transparent image area 501b is formed in the transparent filter 501 It is possible to attach a film treated with opacity or to print or apply only a part of the transparent material 501 other than the transparent image area 501b with an opaque paint or the like.

The filter support portion 503 is formed to fit the outer periphery of the filter 501, and accommodates and supports the filter 501. Basically, the filter 501 is designed to be easily attached to and detached from the filter support 503. When the user wants to change the image, the filter 501 is taken out of the housing 301, Only the filter 501 connected to the filter 503 can be replaced.

The filter unit 313 is installed between the condenser lens 311 and the image forming lens 317 in the housing 301 through the filter unit insertion groove 301a. And serves as a grip when the filter unit 313 is taken out to replace the filter 501. In addition, To this end, the filter support portion 503 is provided with a coupling member 503a for coupling the filter portion 313 to the housing 301. [ The coupling member 503a shown in FIG. 5 is an example of a locking protrusion or a fitting protrusion coupled to a locking protrusion formed on the housing 301.

The filter support 503 is provided with at least one fitting slot 503b in which the filter 501 is fitted and fixed. The fitting slot 503b is provided along the shape (for example, an arc shape) of the filter supporter 503 so that a part of the edge of the filter 501 connected in the direction of the arrow is fitted and the filter 501 is inserted into the fitting slot 503b And engages with the filter supporting portion 503 by fitting in the direction of the arrow.

The filter support 503 is provided with at least three fixing projections 503c and 503c for engaging with the filter 501 to fix the direction in which the filter 501 is coupled to the filter support 503 (front / The filter 501 is provided with three fixing grooves 501c, 501d, and 501e facing the three fixing protrusions 503c, 503d, and 503e of the filter supporting portion 503. In addition,

The first fixing protrusion 503c located at the center among the three fixing protrusions 503c, 503d and 503e of the filter supporting portion 503 is deflected to one side away from the fitting axis x passing through the center of the filter supporting portion 503 And naturally, the first fixing groove 501c is also deflected from the engaging axis x. The second fixing groove 501d and the third fixing groove 501e formed on the filter 501 are formed on both sides of the first fixing groove 501c and the filter fixing portion 503 is also formed with the second fixing groove 501d and the second fixing groove 501d. A second fixing protrusion 503d and a third fixing protrusion 503e are formed opposite to the third fixing groove 501e.

Since the filter 501 and the filter support 503 meet at at least three points and the midpoint thereof is biased at the center, when the filter 501 is engaged with the filter support 503, Are fixedly coupled. Therefore, since the filter 501 is not stuck with the front and rear surfaces reversed, the direction of the image can be fixed.

The filter support portion 503 of the filter portion 313 is formed so that the front face of the filter 501 faces toward the image forming lens 317 when the filter portion 313 is coupled to the housing 301. Therefore, Direction fixing unit " for fixing the direction. 5, the direction fixing portion 503f is a step (for example, in the form of an arc) provided along the shape (for example, an arc) of the filter supporting portion 503. The step 503f of FIG. 5 is provided on one side of the filter supporting portion 503 so as to fix the direction of the filter portion 313 coupled to the housing 301, So that the filter 501 can be supported. Naturally, the direction fixing part may be provided in the form of a protrusion formed on one side of the filter supporting part 503 and fixed to the housing 301.

<Examples>

According to the embodiment, when the filter support 503 is formed of a synthetic resin, metal, or the like having a somewhat resilient property, the filter 501 and the filter 501 are separated from each other can do. In addition, the second fixing groove 501d and the second fixing protrusion 503d or the third fixing groove 501e and the third fixing protrusion 503e may not be in a completely close contact state.

5, the opposite ends of the filter supporting portion 503 are cut out from the edges of the filter 501 so that both ends of the filter supporting portion 503 are connected to the filter 501 It can be made to be spaced without being closely contacted. In the example of Fig. 5, the filter 501 has a disk shape basically, and a portion 501a of both sides perpendicular to the coupling axis a is cut parallel to the direction of the coupling axis a (arrow direction).

In this case, the second fixing groove 501d and the third fixing groove 501e formed in the filter 501 are formed on both cut sides 501a of the filter 501, The third fixing protrusion 503d and the third fixing protrusion 503e need to be extended at least so as to contact at least the second fixing groove 501d and the third fixing groove 501e which are away from each other.

The filter supporting portion 503 is slightly elastic when the filter portion 313 coupled to the housing 301 is separated so that the both ends of the filter supporting portion 503 are pressed so that the second fixing protrusion 503d and the third fixing The protrusion 503e acts like a tooth so that the second fixing groove 501d and the third fixing groove 501e are swollen.

The filter 501 and the filter support 503 are fixed to the three fixing projections 503c, 503d and 503e and the fixing grooves 501c, 501d and 501e in addition to the fitting slots 503b. The coupling force of the second fixing protrusion 503d and the third fixing protrusion 503e is stronger than that of the conventional lighting device and the bonding force is strengthened by the teeth of the second fixing protrusion 503d and the third fixing protrusion 503e.

This structure is very useful when separating the filter unit 313 from the housing 301. When the filter unit 313 coupled to the housing 301 is detached, the weak holding force of the filter support unit 503 and the filter 501 This prevents the filter 501 from separating from the filter support 503 and remaining inside the housing 301. Still, the filter 501 can still be freely mounted and detached to the filter support 503.

<Examples>

The housing 301 is freely rotatable by the structure of the neck 305 so that the image can be rotated irrespective of the mounting direction of the filter unit 313 in accordance with the rotation direction of the housing 301.

In this case, the illumination device 300 of the present invention may further include means for correcting the direction of the image. For example, the illumination device 300 may further include a partial housing 301b rotatably coupled to the housing 301 while forming a part of the housing 301. [ In this case, the filter portion insertion groove 301a is formed in the partial housing 301b.

<Examples>

The transparent image area 501b of the filter unit 313 can be formed by applying a so-called scratch-permeation film to an opaque image area. In this case, the user can easily display the desired image by simply scratching the scratch-through film and forming the transparent image area. The scratch-permeable membrane can be formed by applying RR ink (Rub Removable Ink) to one surface of the filter 501.

In addition to implementing the filter unit 313 with a contrast ratio of black and white, a multi-step contrast ratio can be displayed by a method of overlapping two or three transmission films.

<Description of Operation>

Hereinafter, the operation of the lighting apparatus 300 of the present invention will be described. The light emitted from the light source unit 309 inside the housing 301 is condensed while passing through the condenser lens unit 311 and is incident on the filter unit 313. [ The light passing through the condensing lens unit 311 is imaged by the filter unit 313 while passing through the filter unit 313. The light having passed through the filter unit 313 is guided by the waveguide 315 to the image forming lens 317 and then emitted through the image forming lens 317 to the outer surface (wall surface, screen, etc.) do.

With the above configuration, the outline shape of the portion illuminating the surface of the illumination device 300 according to the present invention has the shape of the transparent image region 501b. The device 300 of the present invention can be produced in a variety of ways by using a filter that can be easily manufactured and applied, thereby realizing various advertising effects and interior effects.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

Claims (8)

In a lighting device,
Light source;
A condensing lens unit having at least one lens for condensing light emitted from the light source;
A flat filter unit having a transparent image area for selectively transmitting light emitted from the light source and imaging the light;
An image-forming lens for illuminating the light passing through the filter unit in an external space to illuminate the image; And
And a housing in which a slit-shaped filter unit insertion groove is formed on an outer surface of the housing, the filter unit including a light source, a condenser lens unit, a filter unit, and an image forming lens,
The filter unit includes:
A flat filter on which the transparent image area is formed; And
And a filter supporting portion formed to fit the outer periphery of the filter and supporting the filter by engaging with the filter, and a coupling member for coupling to the lighting device,
A first fixing protrusion, a second fixing protrusion, and a third fixing protrusion are formed on the filter support portion toward the coupled filter, the filter includes a first fixing groove, a second fixing groove, A third fixing groove is formed, and a first fixing projection disposed at the center of the fixing projections is disposed to be deflected from the center of the filter supporting portion,
Wherein both sides of the filter facing opposite ends of the filter support portion have a shape separated from the filter support portion,
The filter supporting portion has elasticity so that when the external force acts on both ends of the filter supporting portion, the second fixing projections and the third fixing projections disposed on both sides of the filter supporting portion tooth-teeth the second fixing groove and the third fixing groove .
The method according to claim 1,
The condensing lens unit,
Two plano-convex lenses having a plane of incidence of light and a plane of emission of spherical or aspherical convex lenses; And
And a convex lens provided between the plano-convex lens and the filter unit.
delete delete The method according to claim 1,
Further comprising a partial housing rotatably coupled to the housing while forming a part of the housing,
Wherein the filter unit insertion groove is formed in the partial housing to rotate the entire filter unit coupled to the housing.
And a filter unit insertion groove formed in the outer surface of the illumination device, the filter unit being inserted into the illumination device through the filter unit insertion groove and being disposed on a path through which light in the illumination device is emitted to the outside, A filter unit for imaging illumination of a lighting device,
A flat plate filter formed with a transparent image area for selectively transmitting the light to form an image; And
And a filter supporting portion formed to fit the outer periphery of the filter and supporting the filter by engaging with the filter, and a coupling member for coupling to the lighting device,
A first fixing protrusion, a second fixing protrusion, and a third fixing protrusion are formed on the filter support portion toward the coupled filter, the filter includes a first fixing groove, a second fixing groove, A third fixing groove is formed, and a first fixing projection disposed at the center of the fixing projections is disposed to be deflected from a center of the filter supporting portion,
Both side portions of the filter facing opposite ends of the filter support portion have a shape separated from the filter support portion,
The filter supporting portion has elasticity so that when the external force acts on both ends of the filter supporting portion, the second fixing projections and the third fixing projections arranged on the both side portions tooth-like the second fixing groove and the third fixing groove Characterized by a filter section.
delete And a filter unit insertion groove formed in the outer surface of the illumination device, the filter unit being inserted into the illumination device through the filter unit insertion groove and being disposed on a path through which light in the illumination device is emitted to the outside, A filter unit for imaging illumination of a lighting device,
A flat plate filter having a scratch-permeable membrane coated with RR (removable Rub) ink on one surface thereof; And
And a filter supporting portion formed to fit the outer periphery of the filter and supporting the filter by engaging with the filter, and a coupling member for coupling to the lighting device,
Wherein the filter is formed with a transparent image area for selectively transmitting and imaging the light by scraping off any part of the scratch-through film,
The filter support unit includes first to third fixing protrusions facing the coupled filter, first to third fixing grooves are formed in the filter along the outer periphery of the filter to support the fixing protrusions, The first fixing protrusion is disposed to be deflected from the center of the filter supporting portion,
Wherein both sides of the filter facing opposite ends of the filter support portion have a shape separated from the filter support portion,
The filter supporting portion has elasticity so that when the external force acts on both ends of the filter supporting portion, the second fixing projections and the third fixing projections disposed on both sides of the filter supporting portion tooth-teeth the second fixing groove and the third fixing groove .

Images