TWI582353B - Light emitting ring - Google Patents

Description

Luminous ring

The present invention relates to an illuminating ring, and more particularly to an illuminating ring that emits a ring of bright light.

The light-emitting diode has advantages such as long life, small volume, high shock resistance, low heat generation, and low power consumption, and thus has been widely used as an indicator or a light source in households and various devices. In recent years, light-emitting diodes have developed toward high power, so their application fields have expanded to light sources for road lighting, large outdoor billboards, traffic lights or decorative lamps.

In general, in addition to the light source, the above-mentioned lamps usually have light guides of appropriate shapes and materials to transmit light to reduce the light loss rate. One of the commonly used light guiding members is, for example, an optical fiber, which has a good light guiding effect. However, since the characteristics of the optical fiber are such that light is introduced and led from the portions of the cross-section at both ends, the amount of light that can be reflected from the side wall of the optical fiber is very small, so when the optical fiber is used as the light guide member, there is an end point and The condition that the middle section is uneven in brightness.

The present invention provides an illuminating ring that emits a ring-shaped illuminating light using a illuminating element.

An illuminating ring of the present invention includes a pedestal, a light guiding strip and a illuminating element. The base includes an annular body and a projection that projects out of the annular body. The light guiding strip is fixed to the base and has opposite end portions, at least one end portion is at the protruding portion, and other portions of the light guiding strip are located in the annular body, and are enclosed in a ring shape along the contour of the annular body. The light emitting element is disposed adjacent to at least one end of the projection.

In an embodiment of the invention, the illuminating ring further includes a first reflecting member, wherein one end of the light guiding strip is located at the protruding portion, and the other end portion is located in the annular body, and the first reflecting member is disposed at Located on the end within the annular body.

In an embodiment of the invention, the first reflecting member comprises at least one hole.

In an embodiment of the invention, the light-emitting ring further includes a light guiding block, wherein the light guiding strip has a notch formed in the annular shape of the annular body, and the light guiding block is disposed on the notch.

In an embodiment of the invention, the two ends are located at the protruding portion, and the light guiding strip has a notch formed in the annular shape of the annular body, and the light emitting ring further comprises a light guiding block and a light guiding block. Provided in the notch, the light guiding block extends from the notch of the light guiding strip in the annular body to a position between the two ends of the protruding portion.

In an embodiment of the invention, the light guiding block has a hollow region in a region in the protruding portion.

In an embodiment of the invention, one end of the light guiding strip is located at the protruding portion, and the other end portion is located in the annular body. The end portion in the annular body has a sloped surface, and the inclined surface corresponds to the light guiding strip. The wall of the portion at the junction of the projection and the annular body forms a complete annular shape of the light guiding strip in the portion located inside the annular body.

In an embodiment of the invention, the annular body includes an annular groove recessed in an upper surface and a fixing portion extending from the upper surface toward the annular groove, and the light guiding strip is located at at least one end of the protruding portion. Other portions are located within the annular groove, and the fixed portion contacts the light guiding strip to confine the light guiding strip within the annular groove.

In an embodiment of the invention, the illuminating ring further includes a second reflecting member disposed on an inner surface of the annular groove or a plurality of outer surfaces of the annular body except the upper surface.

In an embodiment of the invention, one end of the light guiding strip is located at the protruding portion, and the other end is located in the annular body. The annular body is provided with a half transparent cover above the end of the light guiding strip.

In an embodiment of the invention, the light-emitting ring further includes a light-shielding member covering the protruding portion and the light-emitting element.

In an embodiment of the invention, the illuminating ring further includes at least one protrusion disposed on a surface of the annular body that is in contact with the light guiding strip; or at least one groove disposed on the annular body The surface on which the light guiding strips are in contact.

Based on the above, the light-emitting ring of the present invention is enclosed in a ring shape along the contour of the ring-shaped body by fixing the light-guiding strip on the base having the ring-shaped body, and the light emitted by the light-emitting element enters from at least one end of the light-guiding strip. The light guiding strip transmits light in the light guiding strip so that the light emitting ring can emit a ring of bright light. In addition, since at least one end of the light guiding strip is located in the protruding portion other than the annular body, the annular shape of the light guiding strip enclosed in the annular body may be notched. When one end of the light guiding strip is located at the protruding portion and the other end is located in the annular body, the light guiding block may be disposed in the notch. In this case, the light guiding block may be positioned in the annular body. Beside the end of the strip, the light of the end of the light guiding strip is guided to the light guiding block; when both end portions are located at the protruding portion, the light guiding block is disposed in the notch, and the light emitted by the light emitting element can be directly emitted. Light guide block to avoid low brightness at the gap. In addition, in order to avoid the light guide block being too bright, the light guide block may have a hollow area therein, and some light may be reflected or refracted in the interface of the hollow area to reduce the brightness in the light guide block, and the brightness of the whole circle is uniform. Alternatively, if one of the end portions is in the annular body, the cross section of the end portion may also be cut into a sloped surface corresponding to the wall surface of the portion of the light guiding strip at the boundary between the protruding portion and the annular body, thereby guiding the light. The strip forms a complete ring in the portion located within the annular body, avoiding the creation of a gap. In addition, if one of the end portions is in the annular body, in order to avoid the end portion being too bright, the annular body may be provided with a semi-transparent cover above the end portion to shield part of the light, so that the light-emitting ring can be emitted at the annular body. Light with a uniform brightness.

The above described features and advantages of the invention will be apparent from the following description.

1 and 2 are front and back views, respectively, of an illuminating ring according to an embodiment of the invention. Fig. 3 is a partially enlarged schematic view of Fig. 1; Fig. 4 is a schematic cross-sectional view taken along line A-A of Fig. 1. Referring to FIG. 1 to FIG. 4 , the light-emitting ring 100 of the present embodiment includes a base 110 , a light guide bar 120 , a light-emitting component 130 , a light guide block 140 , a first light-reflecting member 150 , and a light-shielding member 170 .

As shown in FIG. 1, the base 110 includes an annular body 112 and a projection 118 projecting from the annular body 112. The light guiding strip 120 is fixed to the base 110 and has opposite end portions 122. In the embodiment, the light guiding strip 120 is exemplified by an optical fiber, but the type of the light guiding strip 120 is not limited thereto. One of the end portions 122 of the light guiding strip 120 is located at the projection 118, and the other portion of the light guiding strip 120 is located within the annular body 112 and encircles along the contour of the annular body 112.

As shown in FIG. 4, in the present embodiment, the annular body 112 includes an annular groove 114 recessed in an upper surface 113 and extends from the upper surface 113 toward the annular groove 114 (i.e., extending to the left in FIG. 4). A fixing portion 116, the light guiding strip 120 is located in the annular groove 114 at other portions outside the end portion 122 of the protruding portion 118, and the fixing portion 116 contacts the light guiding strip 120 to restrict the light guiding strip 120 to the ring shape. Inside the groove 114.

Returning to FIG. 1 , the light-emitting element 130 is disposed adjacent to at least one end 122 of the projection 118 . In the present embodiment, the light-emitting element 130 is exemplified by a light-emitting diode, but the type of the light-emitting element 130 is not limited thereto.

The light-emitting ring 100 of the present embodiment is surrounded by a contour of the annular body 112 by fixing the light guiding strip 120 on the base 110 having the ring-shaped main body 112, and the light emitted from the light-emitting element 130 is guided from the light guiding strip. The 120 position enters the light guiding strip 120 at the end 122 of the projection 118, and the light is transmitted in the light guiding strip 120 to enable the luminous ring 100 to emit an annular bright light.

In addition, since the characteristics of the optical fiber are such that the light is introduced and led from the portions of the cross-section of the both end portions, the amount of light that can be reflected from the side wall of the optical fiber is very small. Therefore, in the present embodiment, the light guiding strip 120 is at both ends. Part 122 will be brighter than the other parts. However, since one of the end portions 122 is located within the annular body 112, the end portion 122 will emit a brighter light within the annular body 112 than the other portion of the light guide strip 120 located within the annular body 112. As a result, the brightness of the light emitted by the light-emitting ring 100 at the annular body 112 is not uniform.

In order to avoid the above situation, in the present embodiment, the first light reflecting member 150 is disposed on the end portion 122 located in the annular body 112 to reflect the light rays to be emitted from the end portion 122 of the light guiding strip 120 back to the light guiding strip. 120, while avoiding most of the light being directed away from the end 122 of the light guiding strip 120, leaving the area too bright. In addition, the annular body 112 is provided with a semi-transparent cover 119 (shown in FIG. 1) above the end 122 of the light guiding strip 120 to shield part of the light, so that the luminous ring 100 can emit a uniform brightness at the annular body 112. The light.

It should be noted that, as seen in FIG. 1 to FIG. 3, in the present embodiment, the light guide bar 120 has a notch 124 formed in the annular shape of the annular body 112 instead of a closed ring shape. In order to avoid that the notch 124 is too dark, the light-emitting ring 100 cannot emit a uniform light of uniform brightness at the annular body 112. As can be seen in the partial enlarged view of FIG. 3, in the present embodiment, the first reflecting member 150 At least one aperture 152 is included such that a portion of the light exiting the end portion 122 can be directed straight out through the aperture 152. In addition, in the present embodiment, the light guiding block 140 is disposed on the notch 124 to enable light to be emitted from the light guiding strip 120 at the end portion 122 of the annular body 112 to the light guiding block 140, thereby increasing the brightness at the notch 124. . Of course, in other embodiments, the design of the light guiding block 140 may be omitted, and the light emitted from the end portion 122 of the light guiding strip 120 in the annular body 112 is directed to the space at the notch 124 to provide brightness of the area. .

In addition, in order to cause the light-emitting ring 100 to emit an annular light, in the present embodiment, the light-emitting ring 100 is covered by the light-shielding member 170 to the protruding portion 118 and the light-emitting element 130 to cover the light-emitting element 130 and the excess light-emitting area. The light-emitting ring 100 of the present embodiment can achieve the effect of uniformly emitting light uniformly over the entire circle and having only circular light emission by the above configuration.

In this embodiment, in order to enable the light to be emitted from the front surface of the light-emitting ring 100 (that is, the surface shown in FIG. 1), as shown in FIG. 4, the light-emitting ring 100 further includes a second reflecting member 160, and the second reflecting light. The member 160 is disposed on an inner surface 115 of the annular groove 114 to prevent light leakage. The second reflecting member 160 may be a reflective material such as reflective paper or reflective paint to be applied or coated on the inner surface 115. Of course, the position of the second reflecting member 160 is not limited thereto. Figure 5 is a schematic cross-sectional view of an illumination ring in accordance with another embodiment of the present invention. It should be noted that in FIG. 5, the same or similar elements are denoted by the same or similar reference numerals. Referring to FIG. 5, in the present embodiment, the second reflecting member 160a covers the annular body 112 except the upper surface 113. A plurality of outer surfaces, this configuration can also prevent the light-emitting ring 100 from leaking light on other surfaces. The second reflecting member 160a may be a reflecting material such as a reflective paper or a reflective paint to be applied or coated on a plurality of outer surfaces other than the upper surface 113.

Figure 6 is a front elevational view of an illumination ring in accordance with yet another embodiment of the present invention. Referring to FIG. 6, the main difference between the illuminating ring 200 of FIG. 6 and the illuminating ring 100 of FIG. 1 is that, in FIG. 6, the light guiding strip 220 has a slope 246 at the end 222 located in the annular body 212. More specifically, the cross section of the light guiding strip 220 at the end 222 located in the annular body 212 is cut into a slope 246, and the slope 246 corresponds to the light guiding strip 220 at the junction of the protruding portion 218 and the annular body 212. The wall of the portion of the portion of the light guide strip 220 forms a complete annular shape in the portion located within the annular body 212. Therefore, the light-emitting ring 200 of the present embodiment can also achieve the effect of emitting a uniform light of uniform brightness at the annular body 212.

FIG. 7 is a front elevational view showing a light-shielding hidden light-shielding member according to still another embodiment of the present invention. Referring to FIG. 7, the main difference between the illuminating ring 300 of FIG. 7 and the illuminating ring 100 of FIG. 1 is that, in FIG. 7, both end portions 322 are located at the protruding portion 318, and the light emitted by the illuminating element 330 is directed to the two. End 322. In the present embodiment, the two ends 322 of the light guiding strip 320 are located at the protruding portion 318 and are not located in the annular body 312. Therefore, the annular body 312 does not have a partial over-bright condition. However, there is a gap 324 in the annular shape surrounded by the light guiding strip 320 in the annular body 312 instead of a closed ring shape. In order to prevent the gap 324 from being too dark, the light-emitting ring 300 is not able to emit a uniform brightness of light at the annular body 312, and the light guide block 340 extends from the light guide strip 320 at the notch 324 in the annular body 312 to the protrusion. The position between the ends 322 in the inner portion 318. As shown in FIG. 7, part of the light emitted by the light-emitting element 330 directly enters the light guide block 340 to provide brightness.

It should be noted that, in order to prevent the light guide block 340 from being too bright, in the embodiment, the light guide block 340 has a hollow area 342 in the area in the position protruding portion 318, and a part of the light entering the light guide block 340 is hollow. The interface of the region 342 is reflected or refracted away from the light guiding block 340 so that the luminance of the light guiding block 340 can be made too bright, and the brightness of the entire circle is made uniform. It should be noted that although the shape of the hollow region 342 is triangular in FIG. 7, in other embodiments, the shape of the hollow region 342 may be trapezoidal or other shapes, and provide more air and light guide blocks. Interface between 340.

Furthermore, it can be seen in FIG. 7 that the size of the hollow region 342 affects the thickness T of the wall surface of the light guiding block 340. The larger the hollow area 342 is, the smaller the thickness T of the wall surface of the light guiding block 340 is. The smaller the hollow area 342 is, the larger the thickness T of the wall surface of the light guiding block 340 is. If the thickness T of the wall surface of the light guiding block 340 is larger, the light incident on the light guiding block 340 can be increased to make the light guiding block 340 brighter, and vice versa. The designer can adjust the size of the hollow zone 342 as needed to adjust the brightness at the notch 324 such that the illuminating ring 300 can emit a full circle of uniform brightness light at the annular body 312.

Fig. 8 is a partially enlarged schematic view of Fig. 7; Referring to FIG. 8, in the embodiment, the light-emitting ring 300 is covered by the light-shielding member 370 to the protruding portion 318 and the light-emitting element 330 to cover the light-emitting element 330 and the excess light-emitting area, and visually only has circular light.

Figure 9 is a schematic cross-sectional view of yet another embodiment in accordance with the present invention. Another characteristic of the optical fiber is that when the cross section of the optical fiber is deformed, light is emitted from the deformed portion, and the deformed portion is brighter, so that the brightness can be adjusted in this manner. Referring to FIG. 9, at least one protrusion 411 is protruded from a surface of the annular body 412 that is in contact with the light guiding strip 420. The protrusion 411 is disposed on the right side surface of the annular body 412 that is in contact with the light guiding strip 420 (ie, away from the center of the light emitting ring 400). However, in other embodiments, the protrusion 410 may also be disposed on the left side surface (ie, close to The center of the illuminating ring 400, or the lower side surface. The protrusion 411 is used to abut the light guiding strip 420 such that a portion of the circumferential section of the light guiding strip 420 that is abutted by the protruding portion 411 is deformed, so that light propagating in the light guiding strip 420 can be transmitted from the light guiding strip 420. The portion where the deformation occurs in the circumferential section escapes, and the brightness of the portion deformed on the circumferential surface of the light guiding strip 420 is enhanced to achieve an effect of improving the overall brightness of the light-emitting ring 400.

It should be noted that the position, the distribution and the number of the protrusions 411 can be adjusted according to the brightness requirement of the light-emitting ring 400. For example, a plurality of protrusions may be provided in a dark place of the light guide ring to brighten the portion. In addition, when the light guiding strip 420 is closely abutted by the inner wall of the annular body 412, if the inner wall is provided with a groove, the groove will also deform the circumferential section of the light guiding strip 420, and finally can be improved. The overall brightness of the light ring 400.

In summary, the light-emitting ring of the present invention is enclosed in a ring shape along the contour of the ring body by fixing the light guide bar on the base having the ring-shaped body, and the light emitted by the light-emitting element is at least from the light guide bar. One end enters the light guide strip, and the light is transmitted in the light guide strip to enable the light ring to emit a ring of bright light. In addition, since at least one end of the light guiding strip is located in the protruding portion other than the annular body, the annular shape of the light guiding strip enclosed in the annular body may be notched. When one end of the light guiding strip is located at the protruding portion and the other end is located in the annular body, the light guiding block may be disposed in the notch. In this case, the light guiding block may be positioned in the annular body. Beside the end of the strip, the light of the end of the light guiding strip is guided to the light guiding block; when both end portions are located at the protruding portion, the light guiding block is disposed in the notch, and the light emitted by the light emitting element can be directly emitted. Light guide block to avoid low brightness at the gap. In addition, in order to avoid the light guide block being too bright, the light guide block may have a hollow area therein, and some light may be reflected or refracted in the interface of the hollow area to reduce the brightness in the light guide block, and the brightness of the whole circle is uniform. Alternatively, if one of the end portions is in the annular body, the cross section of the end portion may also be cut into a sloped surface corresponding to the wall surface of the portion of the light guiding strip at the boundary between the protruding portion and the annular body, thereby guiding the light. The strip forms a complete ring in the portion located within the annular body, avoiding the creation of a gap. In addition, if one of the end portions is in the annular body, in order to avoid the end portion being too bright, the annular body may be provided with a semi-transparent cover above the end portion to shield part of the light, so that the light-emitting ring can be emitted at the annular body. Light with a uniform brightness.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

T: thickness 100, 200, 300, 400: illuminating ring 110, 310: pedestal 112, 212, 312, 412: annular body 113: upper surface 114: annular groove 115: inner surface 116: fixing portions 118, 218, 318: Projection portion 119: semi-transparent cover 120, 220, 320, 420: light guide strips 122, 222, 322: end portions 124, 324: notches 130, 330: light-emitting elements 140, 340: light guide block

150‧‧‧First Reflector

152‧‧‧ hole

160, 160a‧‧‧second reflector

170, 370‧‧ ‧ shading parts

246‧‧‧Bevel

342‧‧‧ hollow area

411‧‧‧Protruding

1 and 2 are front and back views, respectively, of an illuminating ring according to an embodiment of the invention. Fig. 3 is a partially enlarged schematic view of Fig. 1; Fig. 4 is a schematic cross-sectional view taken along line A-A of Fig. 1. Figure 5 is a schematic cross-sectional view of an illumination ring in accordance with another embodiment of the present invention. Figure 6 is a front elevational view of an illumination ring in accordance with yet another embodiment of the present invention. FIG. 7 is a front elevational view showing a light-shielding hidden light-shielding member according to still another embodiment of the present invention. Fig. 8 is a partially enlarged schematic view of Fig. 7; 9 is a schematic cross-sectional view of an illuminating ring in accordance with yet another embodiment of the present invention.

100: illuminating ring 110: pedestal 112: annular body 114: annular groove 118: bulging portion 119: semi-transmissive cover 120: light guiding strip 122: end portion 124: notch 130: illuminating element 140: light guiding block 150 : first reflector 170: shading

Claims (11)

An illuminating ring includes: a base comprising an annular body and a protrusion protruding from the annular body; a light guiding strip fixed to the base and having opposite ends, at least one end portion In the protruding portion, the other portion of the light guiding strip is located in the annular body and encloses an annular shape along the contour of the annular body; a light guiding block, wherein the light guiding strip is surrounded by the annular body a gap is formed in the ring, the light guiding block is disposed on the notch; and a light emitting element is disposed at at least one end of the protruding portion. The illuminating ring of claim 1, further comprising: a first reflecting member, wherein one end of the light guiding strip is located at the protruding portion, and the other end portion is located in the annular body, The first reflector is disposed on the end located within the annular body. The illuminating ring of claim 2, wherein the first reflecting member comprises at least one hole. The illuminating ring of claim 1, wherein the two ends are located at the protruding portion, and the light guiding block extends from the notch of the light guiding strip in the annular body to the protruding portion. The position between the two ends. The illuminating ring of claim 4, wherein the light guiding block has a hollow region in a region in the protruding portion. The illuminating ring of claim 1, wherein one of the ends of the light guiding strip is located at the protruding portion, and the other end portion is located at the annular body The end portion located in the annular body has a slope corresponding to a wall surface of a portion of the light guiding strip at a boundary between the protruding portion and the annular body, so that the light guiding strip is located at the annular main The part of the body forms a complete ring. The illuminating ring of claim 1, wherein the annular body comprises an annular groove recessed in an upper surface and a fixing portion extending from the upper surface toward the annular groove, the light guiding strip being located A portion other than the at least one end of the projection is located in the annular groove, and the fixing portion contacts the light guiding strip to confine the light guiding strip within the annular groove. The illuminating ring of claim 7, further comprising: a second reflecting member disposed on an inner surface of the annular groove or covering a plurality of outer surfaces of the annular body except the upper surface . The illuminating ring of claim 1, wherein one of the end portions of the light guiding strip is located at the protruding portion, and the other end portion is located in the annular body, the annular body being at the light guiding strip A half transparent cover is provided above the end. The illuminating ring of claim 1, further comprising: a light shielding member covering the protruding portion and the illuminating element. The illuminating ring of claim 1, further comprising: at least one protrusion disposed on a surface of the annular body that is in contact with the light guiding strip; or at least one groove disposed at the On the surface of the annular body that is in contact with the light guiding strip.