JP3082587U - LED signal light - Google Patents

Abstract

(57) [Summary] [Problem] To sufficiently guide and use the emitted light of LED
ED signal light. SOLUTION: A plurality of LEDs are assembled on a substrate to form a light source, and light is transmitted through a front cover having an optical adjustment function to project light rays. The outer surface of the front cover is smooth, and a plurality of lens blocks are provided on the inner surface. Connected, the lens block has an optical adjustment function and is installed corresponding to the LED, and a plurality of lenses are continuously arranged vertically and horizontally on one side of the lens block facing the LED, and a vertical cross section of the plurality of lenses of the lens block is provided. The appearance of the horizontal cross section is an arc-shaped curve with the opening directed to a smooth surface, and the vertical and horizontal radii of curvature of the lens are the same or different. The light rays emitted by the LEDs are directed by a plurality of successive lenses of the lens block, and the vertical and horizontal light rays are newly distributed and adjusted so as to be directed toward the set area.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a kind of LED signal light, in particular, applying a combination of an LED and a front cover having an optical adjustment function, and using a lens block to emit light emitted from a corresponding LED to a plurality of consecutive lenses of the lens block. LED signal light that adjusts the direction by transmitting light, distributes vertically and horizontally emitted light rays, adjusts them so that they are directed toward the set area, and sufficiently guides and uses the light emitted from the LED. About.

[0002]

[Prior art]

 Traditionally, lighting equipment such as various well-known traffic sign lights, signal lights, and high-altitude lights all use incandescent light sources. However, incandescent light bulbs use a large amount of power and are easily burnt at high temperatures, so they must be replaced frequently, which is very inconvenient. Also, the reflective light collector used by incandescent light bulbs creates a reflection phenomenon when illuminated by sunlight, and when used in traffic sign lights, there is a risk of causing driver misidentification. In addition, incandescent bulbs are illuminated mainly by bulbs, and the illuminated area is symmetrically distributed vertically and horizontally. Light rays launched upwards, which are considered to be effective visual ranges, create unnecessary energy waste and reduce the efficiency of incandescent bulb use.

[0003] In comparison with incandescent bulbs, LEDs have the advantages of being a monochromatic light source, consuming less power, producing less heat, and having a longer service life. It is used for traffic sign lights, signal lights and other lighting equipment, which can save more than 80% of power consumption, reduce repair costs and replacement frequency, and, like incandescent light bulbs, reflect light when exposed to sunlight. The driver does not form a dangerous situation by misleading the traffic sign light.

However, the angle of the light emitted from the LED is relatively small, the radiant power (that is, the light emission intensity) is small, the distance over which the light can be transmitted is relatively short, and illumination requiring a long distance such as a sign light or an illumination light. When used as a light source for the device, it can be optically adjusted to the LED light source to re-distribute and adjust the light emitted by the LED and to direct it to a specific area and angle, thereby improving the efficiency of light energy utilization and visual uniformity. Need to be increased. Inspection standards or norms that use a minimum number of LEDs in various sign lights or lighting installations include, for example, the ITE (Institute of Transport Engineers) traffic sign light inspection standards.

[0005] A well-known device for lighting equipment using LEDs is "LED Lamp Included Refractive Lens Element" of US Patent No. 5,174,649 shown in Figs. The rays emitted from the LED (904) are adjusted by a plurality of hyperboloid lenses 901 provided on the entrance surface 90 of the lamp seed 90 to be incident on the entrance surface 900 as a parallel light flux 905, and further emitted from the exit surface 902. Then, the light is condensed and the light is redistributed by an arc-shaped ridge 903 which is provided to project perpendicularly to the exit surface 902. This well-known technique uses the optical adjustment to condense and newly distribute the LED light beams, but has the following drawbacks. 1. Light rays at angles greater than horizontal were out of sight of pedestrians or drivers, and when used for traffic sign lights, became invalid rays, wasting light energy. 2. A plurality of arc-shaped ridges 903 installed on the emission surface 902 were exposed on the outer surface of the lamp shade 90, dust and oil stains were easily accumulated, and the light-condensing effect and the light distribution function of the ridge 903 were significantly reduced.

FIG. 3 shows another well-known technique, which is “Double Refraction and Total Refraction Solid Non-imaging Lens” of US Pat. No. 5,343,330, which patent includes a plurality of stereo lenses. 91 are arranged and installed, the accommodation room 910 is recessed behind the lens 91, and one LED is inserted. Light emitted by the LED is refracted and totally reflected via the refraction surface 911 and the reflection surface 912, Finally, a parallel ray is emitted from the exit surface 913 and collected. Another well-known technique uses optical adjustment to refract, reflect and condense LED light and re-use the orientation. However, it had the following disadvantages. 1. Light rays at angles greater than horizontal were out of sight of pedestrians or drivers, and when used for traffic sign lights, became invalid rays, wasting light energy. 2. The LEDs are inserted into the respective accommodation chambers 910 one by one, and cannot be connected by a printed board method in the whole manufacturing, circuit soldering is required, and the number of lenses and LEDs is extremely large, so that assembly is difficult. It was not easy and repair was even more difficult.

FIGS. 4 and 5 illustrate yet another known technique, US Patent No. 5,833,355, entitled "LED Illuminated Lamp Assembly", which includes a plurality of horizontal strips on the bottom of a lamp shade. A mirror strip 92 is provided, which is divided into upper and lower halves 920, 923 to adjust the corresponding row of LEDs. The upper half 920 has one flat surface 921 and one curved surface 922 to refract light rays downward, and the lower half 923 has one flat surface and a finely curved upper area 924, and a plurality of vertical arc-shaped convex columns. The lower half 923 includes a lower section 925 that transmits light in the upper section 924 and adjusts the horizontal light distribution with a plurality of arc-shaped convex columns in the lower section 925. This well-known technique adjusts the direction of the light beam and effectively utilizes the light energy by removing the light beam at an angle equal to or greater than horizontal. However, it has the following disadvantages. 1. The strip-shaped mirror strips have the disadvantages of implementing a strip-shaped light beam easily and having a practically uniform light-emitting arrangement required by the lighting installation or the signal light. 2. For the vertical optical adjustment, the upper half of the strip-shaped mirror strip is horizontally adjusted, the light beam cannot be distributed, and its enlargement effect causes imaging aberration to the lower half, and the entire visual effect Was regarded as defective.

[0008]

[Problems to be solved by the invention]

 An object of the present invention is to provide a kind of LED signal light, in which a plurality of lens blocks are provided on a light source incident surface of a front cover, and the light emitted from the light source is vertically projected by an optical adjustment function of the lens blocks. The direction is adjusted to a specific area, and the horizontal projection direction is newly concentrated and distributed, so that light energy is effectively used.

A second object of the present invention is to provide a kind of LED signal light, which corresponds to a light source, is densely arranged vertically and horizontally on a light incident surface of a lens block, and A plurality of lenses having different or the same curvature are installed, and a light beam emitted from the exit surface is adjusted to form a plurality of light spots, thereby achieving a function of uniformly distributing the emitted light beams.

[0010] Another object of the present invention is to provide a kind of LED signal light, which utilizes a plurality of lens blocks of a front cover, and the lens blocks are used as a composition unit. It is assumed that the front cover of the shape and the shape can be arranged and composed.

An object of the present invention is to provide a kind of LED signal light, in which a light emitting surface of a front cover is made to be a smooth surface, thereby preventing dust from being adhered thereon. And provide effective illuminance.

[0012]

[Means for Solving the Problems]

 The invention according to claim 1 is an LED signal light for assembling a plurality of LEDs on a substrate to form a light source and transmitting a light beam through a front cover having an optical adjustment function, wherein the outer surface of the front cover is a smooth surface, A plurality of lens blocks are connected to the side surface, the lens blocks have an optical adjustment function, are installed corresponding to the LEDs, and the external main structure of the vertical and horizontal cross sections of the lens blocks is an arc whose opening points to a smooth surface. A plurality of lenses are continuously arranged vertically and horizontally on one side of the lens block facing the LEDs, and the vertical and horizontal radii of curvature of the lenses are the same or different. Optically adjusted by multiple lenses to ensure that the vertical and horizontal exit rays are newly distributed and adjusted to point in the direction of the set area. The symptoms, and the LED signal light. The invention according to claim 2 is the LED signal light according to claim 1, wherein the front cover has a single flat surface. The invention according to claim 3 is the LED signal light according to claim 1, wherein the smooth surface of the front cover is one convex surface or one concave arc surface. The invention according to claim 4 is the LED signal light according to claim 1, wherein the lens blocks are arranged in a close arrangement, a zigzag arrangement, or a mixed arrangement according to the shape of the front cover. The invention according to claim 5 is the LED signal light according to claim 1, characterized in that the front outer shape of the lens block is a polygon or an approximate circle. The invention according to claim 6 is the LED signal light according to claim 1, wherein the opening of the vertical arc-shaped curve of the lens block is directed horizontally or slightly downward. The invention according to claim 7 is the LED signal light according to claim 1, wherein a horizontal arc-shaped curve of the lens block is a flat straight line having an infinite curvature. The invention according to claim 8 is the LED signal light according to claim 1, wherein the curvatures of the vertical and horizontal arc-shaped curves of the lens block are the same. The invention according to claim 9 is the LED signal light according to claim 1, characterized in that the vertical and horizontal curvatures of the lenses of the lens block are the same. The invention according to claim 10 is the LED signal light according to claim 1, wherein the horizontal curvature of the lens of the lens block gradually increases or decreases outward from the center. The invention according to claim 11 is characterized in that the lenses installed in the lens block have different widths in the upper and lower stages, that is, the upper and lower lenses have different lens densities. I have. According to a twelfth aspect of the present invention, there is provided the LED signal light according to the first aspect, wherein a curvature of the lens of the lens block in a vertical sectional direction is an infinitely large straight line. The invention according to claim 13 is the LED signal light according to claim 1, wherein the curvature of the lens of the lens block in the vertical sectional direction is a concave arc shape having a minus value.

[0013]

[Embodiment of the invention]

 The present invention provides a kind of LED signal light, which effectively utilizes LED and optical adjustment principle, and solves the shortcomings of known technology. The light source is formed by assembling a plurality of LEDs on a substrate, and transmits light through a front cover having an optical adjustment function to project light rays. That is, a plurality of lens blocks are connected to the light incident surface), the lens blocks have an optical adjustment function, are installed corresponding to the LEDs, and a plurality of lenses are vertically and horizontally arranged on one side of the lens block facing the LEDs. The plurality of lenses in the lens block are arranged continuously, and the appearance of the vertical and horizontal cross sections of the lenses is an arc-shaped curve whose opening points toward a smooth surface, and the vertical and horizontal radii of curvature of the lenses are the same or different. The light rays emitted by the LED are directed by a plurality of successive lenses of the lens block, and the vertical and horizontal light rays are newly distributed and adjusted so as to be directed toward the set area. The present invention fully guides and uses the emitted light of the LED.

[0014]

【Example】

 As shown in FIGS. 6 to 8, 9, and 10, the LED signal light of the present invention has a plurality of LEDs 20 mounted on a substrate 2 to serve as a light source, and a light from a front cover 1 having an optical adjustment function. Is transmitted and emitted.

The outer surface of the front cover 1 (that is, the light exit surface) is a smooth surface, and the smooth surface is one flat surface, one convex surface or one concave arc surface, and in this embodiment, one flat surface. In addition, a plurality of lens blocks 11 are connected to the inner side surface of the front cover 1 (that is, the light incident surface). The lens blocks 11 are arranged in a close arrangement, a zigzag arrangement or a mixed arrangement according to the shape of the front cover 1 to form any required shape, and the front cover 1 of this embodiment is circular.

When viewed from the front, the lens block 11 is a convex lens whose basic outer diameter is polygonal or nearly circular. In the present embodiment, the lens block 11 is a hexagonal convex lens. The vertical and horizontal cross-sectional views of the lens block 11 and the main structure of the lens block 11 are arc-shaped curves 111 and 112 in which one opening is directed to a smooth surface. This is as shown in FIGS. 9 and 19. The opening of the vertical arc-shaped curve 111 is slightly downward, and the horizontal arc-shaped curve 112 is symmetrical. A plurality of continuous lenses 110 having different curvature radii vertically and horizontally arranged continuously and densely on the convex surface facing the LED 20 of the lens block 11 are provided, and each one lens 110 has a vertical curvature radius and a horizontal curvature. The radii of curvature are also different, whereby the lens block 11 forms a single, densely distributed lens 110 optical adjustment unit.

As shown in FIGS. 11 and 12, the vertically directed rays emitted by the LEDs 20 are adjusted by each lens 110 and collected in front of the lens block 11 and further distributed to each of the vertical arrays. Injected into the design angle area. FIG. 12 shows the light beams in each angular zone. At a position 1 meter away from the lens block 11, when the observer's eyes look at various different angular zones, a plurality of horizontal lines formed by one lens block 11 are formed. The light source virtual image formation state of the array can be seen (see FIGS. 15 and 16 to 18). The opening of the vertical arc-shaped curve 11 of the above-mentioned lens block 11 is slightly downward, and its main function is to adjust the vertically-directed light emitted by the LED 20 and to emit upward when the horizontal line elevation angle is greater than 0 degrees. The light beam is adjusted to point below the horizontal, the vertical light beam of the LED 20 is newly distributed and adjusted to be directed within the set area, and the vertical light energy is sufficiently guided and effective. It is used for

As further shown in FIGS. 13 and 14, the horizontal rays emitted by the LEDs 20 are adjusted by each lens 110 and collected in front of the lens block 11 and further distributed to each design angle in the horizontal arrangement. Fired at the area. FIG. 14 shows the light rays in each angle zone. When the observer's eyes look at various different angle zones at a position 1 m away from the lens block 11, each lens block 11 forms a plurality of rays. It is possible to see the light source virtual image formation state of the vertical array of columns (see FIG. 15 and FIGS. 16 to 18). The opening of the horizontal arc-shaped curve 11 of the above-described lens block 11 is bilaterally symmetrical, and its function is to adjust the horizontally-directed light rays emitted from the LED 20 and to newly distribute the light rays within the set area. The aim is to guide the light energy in the horizontal direction sufficiently and to make effective use of it.

The functions specifically achieved by the embodiment of the present invention are shown in the illumination diagram in front of the lens block 11 of the present invention shown in FIG. FIG. 15 shows an actual situation in which a single light source of the LED 20 is divided into several illumination areas by adjusting the lens block 11. That is, the present invention utilizes a plurality of lenses 110 densely distributed on the convex surface of the lens block 11 on which light rays enter, and adjusts and distributes a single light source of the corresponding LED 20 to form a plurality of light sources. . By operating as a signal light, it generates several times the light source points of the LED 20 installed in the signal light, forms a light source point that is densely distributed, and forms an imaging effect that is almost planar, so that a pedestrian who sees the signal light Alternatively, it effectively enhances the driver's visual warning action. FIGS. 16 to 18 show a virtual image of a light source formed by each lens block 11 seen by the observer at a position 1 meter away from the lens block 11. FIG. 17 shows the observation state at a position 3 degrees below the horizontal level in front of the lens block 11, and FIG. 18 shows the observation state at a position 5 degrees below the horizontal level in front of the lens block 11. The lens block 11 of the present invention is a uniform light spot which forms a plurality of densely distributed light spots by imaging a single light source point emitted by each one LED 20 by designing a plurality of lenses 110 having different curvatures in vertical and horizontal continuous installations. The area is clearly assigned to effectively distribute new light energy to enhance the observer's visual reception and warning effect.

FIG. 19 shows a second embodiment of the present invention, in which the lens block 31 is divided into upper and lower stages, and continuous lenses 310 and 311 having different widths are formed. In the figure, the width of the lens 310 in the upper half of the lens block 31 is larger, the density of the lens 310 is relatively low, the width of the outer lens 311 in the lower half of the lens block 31 is relatively small, The density of 311 is relatively high. The lens 311 is arranged in a straight line, and the horizontal arc-shaped curve in the lower half of the lens block 31 is an infinite straight line, which can be applied to different places and intended LED signal light applications.

FIGS. 20 and 21 show Embodiments 3 and 4 of the present invention, in which the front appearance of the lens blocks 41 and 51 has a circular shape and a rectangular shape, and the function of the optical adjustment is the lens block 11 described above. Is the same as

FIGS. 22 and 23 show a fifth embodiment of the present invention, in which each lens 610 of the lens block 61 is a flat straight line having an infinite curvature in the vertical direction, and the lens 610 of the lens block 61 is Using the refraction, the vertical rays are newly distributed.

FIGS. 24 and 25 show a sixth embodiment of the present invention. Among them, the distribution main structure of the plurality of lenses 810 provided on the lens block 81 forms a uniform arc-shaped curve 811, The aperture center line 812 is horizontally oriented, and the vertical and horizontal curvatures of the lens 810 densely and symmetrically installed on the lens block 81 are the same. It can be used for signal lights that need to be collected, re-distributed, and need to project light rays above the horizontal axis, which is applied to longer distance applications such as highway sign lights.

The above is a detailed description of the present invention. However, the above description relates to an embodiment of the present invention, and does not limit the scope of the present invention. Any modification or alteration of the part shall belong to the claims of the present invention.

[0025]

[Effect of the invention]

 The LED signal light of the present invention utilizes a combination of an LED and a front cover having an optical adjustment function, and transmits a light beam emitted from the corresponding LED through a plurality of continuous lenses of the lens block using a lens block. The direction is adjusted, the vertical and horizontal exit rays are re-distributed and adjusted to point in the direction of the set area, and the light emitted by the LED is fully guided and utilized.

[Brief description of the drawings]

FIG. 1 is a well-known technique, US Patent No. 5,17.
FIG. 4 is a plan view of a ray path of No. 4,649.

FIG. 2 is a well-known technique, US Patent No. 5,17.
FIG. 4 is a side view of the light path of No. 4,649.

FIG. 3 is a well-known technique, US Patent No. 5,34.
FIG. 3 is a side view of a cross section of a three-dimensional lens and a ray path of No. 3,330.

FIG. 4 is a well known technique, US Patent No. 5,833.
FIG. 3 is a partial three-dimensional view of the strip-shaped mirror strip of No. 3,355.

FIG. 5 is a well-known technique of US Patent No. 5,833.
FIG. 3 is a side view of the light path of No. 3,355.

FIG. 6 is a cross-sectional view of the embodiment of the present invention after combination, showing a correspondence state of a lens block and an LED.

FIG. 7 is a view showing an incident surface of a front cover according to an embodiment of the present invention.

FIG. 8 is a perspective view of a lens block according to an embodiment of the present invention.

FIG. 9 is a vertical sectional view of the lens block according to the embodiment of the present invention.

FIG. 10 is a horizontal sectional view of the lens block according to the embodiment of the present invention.

FIG. 11 is a vertical sectional view of a lens block according to an embodiment of the present invention and a light source light ray display diagram.

FIG. 12 is a vertical cross-sectional view of a lens block according to an embodiment of the present invention and a light source ray long distance display diagram.

FIG. 13 is a horizontal sectional view of a lens block according to an embodiment of the present invention and a light source light ray display diagram.

FIG. 14 is a view showing a horizontal cross section of a lens block and a light source long distance display according to an embodiment of the present invention.

FIG. 15 is a front illuminance diagram of the lens block according to the embodiment of the present invention.

FIG. 16 is an image view of the lens block according to the embodiment of the present invention, showing a horizontal front observation state of the lens block.

FIG. 17 is an image diagram of the lens block according to the embodiment of the present invention, showing a front observation state of the lens block at 3 degrees below horizontal.

FIG. 18 is an imaging diagram of the lens block according to the embodiment of the present invention, showing a front observation state of the lens block at 5 degrees below horizontal.

FIG. 19 is a perspective view of Embodiment 2 of the lens block of the present invention.

FIG. 20 is a perspective view of Embodiment 3 of the lens block of the present invention.

FIG. 21 is a perspective view of Embodiment 4 of the lens block of the present invention.

FIG. 22 is a perspective view of Embodiment 5 of the lens block of the present invention.

FIG. 23 is a vertical sectional view of Embodiment 5 of the lens block of the present invention.

FIG. 24 is a perspective view of Embodiment 6 of the lens block of the present invention.

FIG. 25 is a vertical sectional view of Embodiment 6 of the lens block of the present invention.

FIG. 26 is a perspective view of Embodiment 7 of the lens block of the present invention.

FIG. 27 is a vertical sectional view of Embodiment 7 of the lens block of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Front cover 11, 31, 41, 51, 61, 71, 81 Lens block 2 Substrate 20 LED 110, 310, 410, 510, 610, 710, 8
10 lens 111, 112, 611, 711, 811 arc-shaped curve 812 center line

Claims (13)

[Utility model registration claims] 1. An LED signal light for assembling a plurality of LEDs on a substrate to form a light source and transmitting a light beam through a front cover having an optical adjustment function, wherein an outer surface of the front cover is smooth and an inner surface is A plurality of lens blocks are connected, the lens blocks have an optical adjustment function and are installed corresponding to the LEDs, and the external main structure of the vertical and horizontal cross sections of the lens blocks has an arc-shaped curve in which the opening points to a smooth surface. And the LE of the lens block
A plurality of lenses are continuously arranged vertically and horizontally on one side facing D, and the vertical and horizontal radii of curvature of the lenses are the same or different, and the light emitted by the LED is optically adjusted by the plurality of lenses of the lens block, An LED signal light, characterized in that the directional and horizontal emission rays are newly distributed and adjusted to point in the direction of the set area. 2. The LED signal light according to claim 1, wherein the front cover has a single flat surface. 3. The smooth surface of the front cover is one convex surface or one concave arc surface.
LED signal light according to 1. 4. The LED signal light according to claim 1, wherein the lens blocks are arranged in a close arrangement, a zigzag arrangement, or a mixed arrangement according to the shape of the front cover. 5. The LED signal light according to claim 1, wherein a front outer shape of the lens block is a polygon or an approximate circle. 6. The LED signal light according to claim 1, wherein the opening of the vertical arc-shaped curve of the lens block is directed horizontally or slightly downward. 7. A horizontal arc-shaped curve of the lens block is a flat straight line having infinity of curvature.
The LED signal light according to claim 1. 8. The vertical and horizontal arc-shaped curves of the lens block have the same curvature.
The LED signal light according to claim 1. 9. The LED signal light according to claim 1, wherein vertical and horizontal curvatures of the lenses of the lens block are the same. 10. The LED signal light according to claim 1, wherein the horizontal curvature of the lens of the lens block gradually increases or decreases outward from the center. 11. The LED signal light according to claim 1, wherein the lenses installed in the lens block have different widths in the upper stage and the lower stage, that is, the upper and lower stages have different lens densities. 12. The LED signal light according to claim 1, wherein a curvature of the lens of the lens block in a vertical sectional direction is an infinite flat straight line. 13. The LED signal light according to claim 1, wherein a curvature of the lens of the lens block in a vertical sectional direction is a concave arc shape having a negative value.