CN215069088U

CN215069088U - Indicating device

Info

Publication number: CN215069088U
Application number: CN202121419766.5U
Authority: CN
Inventors: 冯宇; 李志军; 方勇; 王英强; 周志昊
Original assignee: Gulf Security Technology Co ltd
Current assignee: Gulf Security Technology Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2021-12-07
Anticipated expiration: 2031-06-25

Abstract

The utility model provides an indicating device. The indicating device includes: a back plate comprising opposing first and second sides; at least one light source emitting light from a first side of the backplate to a second side of the backplate; wherein the back plate comprises a planar portion and a reflective slope portion between the first side and the second side, the reflective slope portion is further from the at least one light source relative to the planar portion, and the reflective slope portion is angled relative to the planar portion, light emitted by the at least one light source being diffusely reflected when impinging on the reflective slope portion. According to the utility model discloses an indicating device can realize the more even distribution of illumination luminance.

Description

Indicating device

Technical Field

The utility model relates to an indicator field, more specifically, the utility model relates to a luminous indicating device.

Background

Lighted indicators are commonly used in public places such as malls, airports, hospitals, and the like. In order to make a thin light-emitting indicator, a light source is often provided at one side of the panel, with greater brightness in areas closer to the light source, and with increasing distance from the light source, the brightness gradually decreases until the brightness is lower in areas further from the light source. In order to ensure visibility of the entire indicator device, it is necessary to ensure that the brightness is within the standard even in regions that are relatively far from the light source.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve or at least alleviate the problem that prior art exists.

In one aspect, an indication apparatus is provided, including:

a back plate comprising opposing first and second sides;

at least one light source emitting light from a first side of the backplate to a second side of the backplate;

wherein the back plate comprises a planar portion and a reflective slope portion between the first side and the second side, the reflective slope portion is further from the at least one light source relative to the planar portion, and the reflective slope portion is angled relative to the planar portion, light emitted by the at least one light source being diffusely reflected when impinging on the reflective slope portion.

Optionally, in an embodiment of the indicating device, the back plate has a logo pattern spanning the planar portion and the reflective sloping surface portion,

optionally, in an embodiment of the indicator apparatus, the at least one light source comprises an array of parallel light sources arranged side by side at the first side of the back plate.

Optionally, in an embodiment of the indicating device, an angle between the reflection slope part and the plane part is less than 45 degrees.

Optionally, in an embodiment of the indicating device, the at least one light source is an LED lamp.

Optionally, in an embodiment of the indicating device, the at least one light source is disposed against the back plate.

Optionally, in an embodiment of the indicating apparatus, the indicating apparatus further includes a transparent cover covering the back plate, and at least a portion of the transparent cover is parallel to the planar portion of the back plate.

Optionally, in an embodiment of the indicating device, the height of the reflective ramp portion is 1/6 to 5/6 of the distance between the transparent cover case and the parallel section of the planar portion of the back plate.

Optionally, in an embodiment of the indicating device, a width of the reflective slope part is 1/5 to 1/2 of a total width of the first side to the second side of the back plate.

Optionally, in an embodiment of the indicating device, the back plate is rectangular, the first side and the second side constitute long sides of the back plate, the at least one light source emits light in a width direction of the rectangular back plate, the at least one light source is disposed on the circuit board at the first side of the back plate, and the controller is provided at the second side of the back plate to selectively activate a part of the at least one light source.

According to the utility model discloses an indicating device can realize the more even distribution of illumination luminance.

Drawings

The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. As is readily understood by those skilled in the art: these drawings are for illustrative purposes only and are not intended to constitute a limitation on the scope of the present invention. Moreover, in the drawings, like numerals are used to indicate like parts, and in which:

fig. 1 shows a perspective view of an indication device according to the present invention; and

fig. 2 shows a cross-sectional view of an indication device according to the invention.

Detailed Description

It is easily understood that, according to the technical solution of the present invention, a plurality of alternative structural modes and implementation modes can be proposed by those skilled in the art without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present invention, and should not be considered as limiting or restricting the technical solutions of the present invention in their entirety or in any other way.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.

An indication device according to an embodiment of the invention is described with reference to fig. 1 and 2. According to the utility model discloses an indicating device includes: a back plate 1 comprising opposing first and

second sides

11, 12; and at least one light source 21 emitting light from the first side 11 of the back plate 1 towards the second side 12 of the back plate 1. In the illustrated embodiment, the back sheet 1 is shown as a rectangle having opposing first and

second sides

11, 12, the first and

second sides

11, 12 being the long sides of the rectangle, while the rectangular back sheet 1 further comprises a pair of short sides, namely a first side 13 and a second side 14. The at least one light source 21 comprises a row of juxtaposed light sources 21 arranged at the first side 11 of the back plate, all or part of which emit parallel light substantially along the width direction of the rectangular back plate 1, so as to illuminate the entire or part of the indicating means, so that the indicating means is visible in a dark environment. In alternative embodiments, the back plate 1 may have any desired shape, such as square, circular, oval, triangular, etc. In an embodiment of the present invention, the back plate 1 comprises a planar portion 16 and a reflective slope portion 17 between the first side 11 and the second side 12. The planar portion 16 and the reflective ramp portion 17 are for example bounded by a straight boundary line 15, in alternative embodiments the boundary of the planar portion 16 and the reflective ramp portion 17 may not be a straight line, such as a curved line. The reflective ramp portion 17 is further from the at least one light source 21 at the first side 11 than the planar portion 16. Therefore, the reflecting slope surface portion 17 is disposed at an angle a with respect to the planar portion 16, and light emitted from the at least one light source 21 is diffusely reflected when irradiated on the reflecting slope surface portion 17. By the provision of a reflective ramp portion at the far side of the light source, the overall indicator device is made more uniform in brightness under illumination by the at least one light source 21. On the other hand, in the case where the luminance is uniform, the luminance of the light source can be appropriately reduced, thereby reducing the size of the light source and reducing the overall thickness and manufacturing cost of the indicator apparatus.

As shown in fig. 2, in general, the indicating apparatus shown in fig. 2 may be equally divided into a highlight region a, a middle highlight region b and a low highlight region c according to a distance from the light source 21, and the reflection slope part 17 may be disposed in the middle highlight region b and the low highlight region c or only in the low highlight region c in order to make the brightness of light more uniform. As shown by arrows in fig. 2, the light reflected by the reflective slope 17 diverges in a plurality of directions, and the reflected light is mostly used to enhance the brightness of the low-bright region c, but there may be a part of the light used to compensate for the brightness of the medium-bright region b. The surface roughness of the reflection slope portion 17 should be appropriately controlled so that diffuse reflection occurs when light is irradiated thereon. It is to be noted that the roughness of the reflecting slope parts 17 should not be too low, for example, the reflecting slope parts 17 forming a mirror surface are disadvantageous for increasing the uniformity of light.

In some embodiments, as can be clearly seen in fig. 1, the at least one light source comprises a row of parallel light sources 21 arranged side by side at the first side 11 of the back plate 1. In the case of a rectangular back plate, the row of parallel light sources is usually arranged at the long side and emits light in the direction of the short side, thereby making the optical path relatively small. As shown in fig. 2, the at least one light source 21 may be an LED lamp, which is arranged on the circuit board 2 at the first side 11 of the back plate 1. In other embodiments, other suitable types of light sources may be used. Additionally, there may be a controller 4 at the second side 12 of the back plate 1, the controller 4 being capable of receiving a signal to selectively control a portion of the light sources 21 to be illuminated. For example, in the illustrated embodiment, the back panel 1 has a logo pattern 18 across the planar portion 16 and the reflective sloping surface portion 17, including a middle small person and two side arrow patterns, and the controller 4 can select light sources corresponding to the single side arrow portion and the middle small person to be illuminated, thereby indicating direction, e.g., for directing people flow in a movie theater or the like scene.

In some embodiments, the angle a of the reflective ramp portion 17 to the planar portion 16 may be any angle from 1-90 degrees. In some embodiments, the angle a of the reflective slope part 17 to the planar part 16 may be smaller than 60 degrees, for example, the angle a may be smaller than 45 degrees, thereby achieving a reflective slope part 17 having a larger width. For example, in some embodiments, the angle a between the reflective slope portion 17 and the planar portion 16 may be less than 30 degrees, and more preferably, the angle a between the reflective slope portion 17 and the planar portion 16 may be less than 15 degrees, such as between 5 and 15 degrees. In some embodiments, as best shown in fig. 2, at least one light source 21 may be disposed on the back plate 1 and in close proximity to the back plate 1. The indicating device may further comprise a transparent cover 3 covering the back plate 1, the transparent cover 3 comprising a connection portion 31 corresponding to an edge of the back plate 1 for fixing to the back plate 1. The transparent cover 3 can be mounted to the back plate 1, for example, by a snap connection with connections 31 on both sides. The transparent cover 3 further comprises a middle portion 32, the middle portion 32 of the transparent cover 3 being parallel to the planar portion 16 of the back plate 1 and thereby defining a distance h therebetween₂. The distance h₂Approximately equal to the thickness of the indicating means. In some embodiments, the height h of the reflective ramp portion₁Occupying a distance h between the transparent cover and a parallel section of the planar portion of the backplate ₂1/6 to 5/6. In some embodiments, the height h of the reflective ramp portion₁Occupying the height h of the parallel section of the flat portions of the transparent cover and the back plate ₂1/3 to 2/3. In some embodiments, the width d of the reflective ramp portion ₁1/6-5/6 of total width from the first side to the second side of the back plate, e.g., in some embodiments, width d of the reflective ramp portion₁In the range of 1/5 to 1/2 of the total width of the first side to the second side of the back-plate. It should be understood that the width, height and relative angle a of the reflecting slope portion 17 can be adjusted by those skilled in the art according to the actual situation, and the factors to be referred to include but are not limited to: indicating device thickness, roughness of reflective slope portion, height of at least one light source, distance from at least one light source and/orThe angle of the at least one light source, etc. According to the test, by using the reflective slope part 17 appropriately set, the luminance of the low bright region c can be improved by 30%, and the luminance of the medium bright region b can be improved by 10%.

The indicating device according to the present invention can be applied to a variety of scenes including, but not limited to, a safe exit, an indication of persons to be evacuated, an indication of floors such as-3 to 44 floors, an indication of special floors, an indication of refuge floors, an indication of interlayers, an access for disabled persons, a fire control room, etc. According to the utility model discloses an indicating device has good luminance homogeneity. Furthermore, according to the utility model discloses an indicating device can select for use littleer light source from this to reduce whole indicating device's thickness, saves the cost.

The foregoing description of the specific embodiments has been presented only to illustrate the principles of the invention more clearly, and to show or describe various components clearly so that the principles of the invention may be understood more readily. Various modifications or changes may be readily made by those skilled in the art without departing from the scope of the present invention. It is to be understood that such modifications and variations are intended to be included within the scope of the present invention.

Claims

1. An indicating device, comprising:

a back plate comprising opposing first and second sides;

2. The indicating device of claim 1 wherein said back plate has a logo pattern across said planar portion and said reflective sloping surface portion.

3. An indicator device as claimed in claim 1 or 2, wherein the at least one light source comprises a row of parallel light sources arranged side by side at the first side of the back plate.

4. An indicator device as claimed in claim 1 or 2, wherein the reflective ramp portion is angled less than 45 degrees from the planar portion.

5. An indicator device as claimed in claim 1 or 2, wherein the at least one light source is an LED light.

6. An indicator device as claimed in claim 1 or 2, wherein the at least one light source is disposed against the back plate.

7. An indicator device as claimed in claim 1 or 2, further comprising a transparent casing covering the back plate, at least a portion of the transparent casing being parallel to the planar portion of the back plate.

8. The indicating device of claim 7 wherein the height of the reflective ramp portion is 1/6 to 5/6 of the distance between the transparent cover shell and the parallel section of the planar portion of the back plate.

9. The indicating device of claim 8 wherein the width of the reflective ramp portion is 1/5-1/2 of the total first side-to-second side width of the back plate.

10. The indicating device of claim 1 or 2 wherein the back plate is rectangular, the first and second sides forming long sides of the back plate, the at least one light source emitting light in a width direction of the rectangular back plate, the at least one light source disposed on the circuit board at the first side of the back plate, the back plate having a controller at the second side to selectively activate a portion of the at least one light source.