TWI799147B - High-efficiency projected luminous traffic signs - Google Patents

Abstract

A high-efficiency projection-type luminous traffic sign. The retroreflective film is combined between the sign body and the diffusion film to form the reminder side of the traffic sign. The traffic sign is set higher than the road position, and the reminder side faces the direction of vehicles driving on the road. Projection type The light source modules are arranged on the side of the road at intervals of traffic signs. The projected light source module emits a projected beam towards the traffic sign and covers the reminder side. The beam first passes through the diffuser film to the retroreflective film and then reflects. After the beam is reflected, the reflective path of the beam changes through the diffuser film and passes through the diffuser film to form a diffused beam. , the diffuse beam faces the vehicles driving on the road and enters the eyes of the driver, as if lighting up the reminder side, allowing passers-by to clearly see the signs.

Description

High-efficiency projected luminous traffic signs

The present invention relates to traffic signs, and in particular refers to enhancing the brightness of traffic signs under the action of reflection and diffusion of light beams projected by projection light source modules to traffic signs.

Rapid economic development, a substantial increase in vehicles and the construction of various roads. Thanks to the dense road traffic network, the driving efficiency is greatly improved, and the vehicle driving, passengers and goods can reach the destination safely. Modern road construction has the goal of safety, convenience and comfort, and provides perfect roads and facilities. Among road traffic facilities projects, traffic signs, traffic markings, and traffic signals are one of the most basic and important items. Through the combined use of simple graphics, text and colors, traffic signs provide drivers with an understanding of road conditions, directions, and precautions. They have the functions of guiding, guiding, restricting, raising awareness and paying attention to road conditions, and preparing for emergencies at any time.

However, when the visibility decreases at night, the driver's vision is blurred and he cannot see the content of the traffic signs in the distance. A common practice in the early days was to set lamps below the traffic signs, and the lamps project light from bottom to top. Or traffic signs are equipped with reflective film to provide vehicle headlight lighting and reflective properties, increasing the identification of traffic signs to drivers. Or a combination of the above two, such as the Mainland New Patent Publication No. 206887808.

The above-mentioned position of the traffic sign below is provided with lamps, which are illuminated at an upward angle at a short distance, and the unilluminated parts are dimly displayed and difficult to identify. During maintenance, the road must be closed and the Climbing equipment can be replaced and overhauled. However, when traffic signs equipped with reflective film are used on curves, because the illumination range of the vehicle headlights cannot be projected onto the traffic signs, there are still some problems that are dim and difficult to identify. Furthermore, when this type is used with a reflective film, the light source can only be retroreflected at a specific angle, and the driver of the vehicle that is not within the range of the retroreflective angle cannot be clearly identified.

The high-efficiency projection-type luminous traffic sign of the present invention can improve the overall brightness of the traffic sign and increase the visibility by combining the traffic sign with a diffusion film, a retroreflective film and a projection-type light source module. Furthermore, the structure of the traffic sign is simple and difficult If the projected light source module is damaged, the maintenance only needs to focus on the projected light source module located beside the road, and there is no need to close the lane or implement road control when repairing the projected light source module, and the damaged projected light source module can also be directly removed and replaced. The new projected light source module is installed, which is convenient to carry back for maintenance, and achieves high efficiency of modular maintenance and replacement.

In order to achieve the aforementioned purpose and effect, a high-efficiency projected luminous traffic sign is provided, including: a traffic sign, including a sign body, a retroreflective film and a diffusion film, and the opposite sides of the retroreflective film are combined with the sign body and the diffuser Between the films, so as to constitute the reminder side of the traffic sign; the traffic sign is set higher than the road position, and the reminder side is facing the direction of the vehicle driving on the road; and the projected light source module, which is separated from the traffic sign spaced alongside the road.

When the aforementioned projected light source module emits a projected light beam towards the traffic sign and covers the reminder side, the light beam first passes through the diffusion film to the retroreflective film and then reflects: when the light beam is reflected and passes through the diffusion film again, the The diffusion film changes the reflection path of the beam and passes through the diffusion film to form a diffused beam, and the diffused beam faces the traveling direction of the vehicle traveling on the road.

When the high-efficiency projection-type light-emitting traffic sign of the present invention is actually used, the projection-type light source module is turned on, so that the projection-type light source module emits a collimated beam toward the traffic sign, and the beam irradiation range is sufficient to cover the entire warning side of the traffic sign, and the beam projection When reaching the traffic sign, it will first pass through the diffusion film to the retro-reflective film and then reflect. When the reflected beam passes through the diffusion film again, the reflection path of the light beam will be changed through the diffusion film to form a diffused beam, and the diffused beam will be directed towards the road. On the vehicle, and into the eyes of the driver of the vehicle, so that when the passer-by looks at the traffic sign, it is as if the warning side is lit (or as if the warning side is glowing) and is clearly visible. Therefore, compared with the traditional type, the high-efficiency projected luminous traffic sign provided by the present invention allows passers-by to see the sign clearly, and the maintenance is simpler and more convenient.

1: High-efficiency projected luminous traffic signs

100: Traffic signs

110: sign body

120: Retroreflective film

130: Diffusion film

140: reminder side

150: Bracket

200: Projected light source module

210: Beam

220: Diffuse beam

230: frame body

300: road

310: Vehicle

The first picture is a schematic diagram of the high-efficiency projection-type luminous traffic sign of the present invention arranged on the road.

The second figure is a schematic diagram of projecting light beams projected toward traffic signs by the projection light source module.

The third figure is a schematic diagram of the projected light beam being retro-reflected by the traffic sign and then diffused.

The fourth figure is a schematic diagram of the operation of another perspective of the present invention.

The fifth figure is a schematic diagram of the path of the simulated light beam passing through the diffusion film and the retroreflective film.

Figure 6 is a side view schematic diagram of the projected light source module cooperating with the frame to project the light beam horizontally towards the traffic sign.

Figure 7 is a schematic side view of a plurality of projection light source modules cooperating with the frame body to project light beams toward traffic signs.

Please refer to Figures 1 to 5, which disclose a high-efficiency projection-type luminous traffic sign 1, including: a traffic sign 100, including a sign body 110, a retroreflective film 120 and a diffusion film 130, The opposite sides of the retroreflective film 120 are combined between the sign body 110 and the diffusion film 130 to form the reminder side 140 of the traffic sign 100; the traffic sign 100 is set higher than the road 300 position, and the reminder side 140 is facing the traveling direction of the vehicle 310 driving on the road 300 ; and the projected light source module 200 is arranged beside the road 300 at intervals from the traffic sign 100 .

When the aforementioned projected light source module 200 emits a projected light beam towards the traffic sign 100 and covers the reminder side 140, the light beam 210 first passes through the diffusion film 130 to the retroreflective film 120 and then reflects: the light beam 210 is reflected and then again When passing through the diffusion film 130 , the reflection path of the light beam 210 is changed by the diffusion film 130 and passes through the diffusion film 130 to form a diffuse light beam 220 , and the diffuse light beam 220 faces the traveling direction of the vehicle 310 driving on the road 300 .

When the high-efficiency projective luminous traffic sign 1 of the present invention is actually used, the projective light source module 200 is turned on so that the projective light source module 200 emits a collimated light beam 210 toward the traffic sign 100, and the irradiation range of the light beam 210 is sufficient to cover the entire traffic sign 100. Remind the side 140, and when the light beam 210 is projected onto the traffic sign 100, it first passes through the diffusion film 130 to the retro-reflective film 120 and then reflects. 220, while the diffused light beam 220 is directed toward the vehicle 310 driving on the road 300, and enters the eyes of the driver of the vehicle 310, so that the user lights up the reminding side 140 when visually viewing the traffic sign 100 (as if the reminding side 140 is emitting light) And it is clearly visible and easy to interpret, without relying on the headlights of the vehicle 310 to illuminate the traffic sign 100, providing passers-by with information that can clearly identify and understand the guidance, restrictions, warnings or instructions conveyed by the traffic sign.

In particular, the high-efficiency projection-type luminous traffic sign 1 of the present invention, since the traffic sign 100 has a simple structure and is not easy to be damaged, the maintenance only needs to focus on the projection-type light source module 200 located beside the road, and the maintenance of the projection-type light source module 200 is enough. When the group 200 does not need to close the lane and implement road control, the maintenance personnel can directly repair the projected light source module 200 next to the road 300, and can also directly unload the damaged projected light source module 200. The projection-type light source module 200 and the new projection-type light source module 200 are installed, which is convenient for carrying back for maintenance and achieves high efficiency of modular maintenance and replacement. Therefore, the high-efficiency projection-type luminous traffic sign 1 provided by the present invention allows passers-by to see the sign more clearly than the traditional type, and the maintenance is simpler and more convenient.

The above-mentioned projection light source module 200 can be controlled to be activated at sunset and closed after sunrise, and can also be turned on by an external (remote) device under the control of an external (remote) device when visibility is poor such as dense fog or heavy rain 200, to provide vehicles driving in thick fog, heavy rain and other poor visibility weather, all can provide passersby to clearly obtain the information provided by traffic signs.

The projection light source module 200 includes a light source and an optical element. The optical element includes a lens or a reflection cup or a combination of the two. The projected light source module 200 can adjust the position of the lens or the reflective cup to change the focus (focal point) of the projected light beam. Through the above operations, the divergence angle of the projected light beam can be changed according to the distance between the projected light source module 200 and the traffic sign 100 , so the flexibility of the installation position can be improved, and the angle surface reflected by the traffic sign 100 can be controlled.

The projected light source module 200 has projected light beams with more than two colors and varying wavelengths of visible light. For example, the projecting light source module 200 can project white light beams and yellow light beams, which can be used in accordance with environmental conditions. For example, at sunset and night, traffic signs 100 can be illuminated with white light beams, but in thick fog and rainstorms, the visibility is poor. , the traffic sign 100 is illuminated with a yellow light beam. Specifically, the aforementioned luminescent light source has the ability to generate visible light with a white wavelength and visible light with a yellow wavelength. Alternatively, optical elements are used to change the color of the light beams generated by the light source, so that the projection-type light source module 200 can generate white light beams and yellow light beams.

The detailed features of each component of the present invention and their cooperative operation relationship are further described in detail. The high-efficiency projected luminous traffic sign 1 of the present invention further includes a bracket 150 installed beside the road 300 and extending to a position above the road 300 , and the traffic sign 100 is set on the bracket 150 .

The high-efficiency projection-type luminous traffic sign 1 of the present invention further includes a frame body 230 disposed beside the road 300, and the projection-type light source module 200 is disposed on the frame body 230 and faces the traffic sign 100, and the projection-type light source The module projects a light beam toward the traffic sign 100 at an upward angle. Alternatively, as shown in FIG. 6 , the projection light source module 200 is disposed on the frame body 230 and projects light beams toward the traffic sign 100 in a horizontal direction. The installation of the projected light source module 200 is provided by the frame body 230 , so that the projected light source module 200 can be higher than the road surface 300 to facilitate repair work by relevant personnel.

Or as shown in the seventh figure, the frame body 230 is arranged beside the road 300, and the plurality of projection-type light source modules 200 arranged at intervals are arranged on the frame body 230, and the plurality of projection-type light source modules 200 are arranged side by side toward the traffic sign 100 projects the light beam 210 (represented by dotted line and dot chain line respectively), and cooperates with the above-mentioned mobilization of the position of the lens or the reflective cup to change the scattering angle and projection direction of the projected light beam, so that the retroreflective film 120 and the diffusion film 130 Under the collocation effect of , the diffused light beam 220 projected to two different positions is formed.

In addition, the traffic sign 100 of the present invention can be any one or a combination of two or more of the foregoing warning signs, prohibition signs, indication signs, and auxiliary signs.

1: High-efficiency projected luminous traffic signs

100: Traffic signs

140: reminder side

150: Bracket

200: Projected light source module

230: frame body

300: road

Claims (9)

A high-efficiency projected luminous traffic sign, including: The traffic sign includes a sign body, a retroreflective film and a diffusion film, and the opposite sides of the retroreflective film are combined between the sign body and the diffusion film to form the reminder side of the traffic sign; the traffic sign is set high It is located on a road, and the reminding side is facing the direction of travel of vehicles driving on the road; and a projected light source module, which is spaced apart from the traffic sign and arranged beside the road; When the aforementioned projected light source module emits a projected light beam towards the traffic sign and covers the reminder side, the light beam first passes through the diffusion film to the retroreflective film and then reflects: When the aforementioned light beam passes through the diffusion film again after being reflected, the reflection path of the light beam is changed by the diffusion film and passes through the diffusion film to form a diffused light beam, and the diffused light beam faces the traveling direction of the vehicle driving on the road. The high-efficiency projection-type luminous traffic sign as described in claim 1, wherein the projection-type light source module includes a light-emitting light source and optical elements. The high-efficiency projection-type luminous traffic sign according to claim 2, wherein the optical element includes a lens or a reflective cup or a combination of the two. The high-efficiency projection-type luminous traffic sign as described in claim 3, wherein the projection-type light source module can adjust the position of the lens or the reflection cup to change the scattering angle and projection direction of the projection beam. The high-efficiency projection-type luminous traffic sign as described in Claim 1, wherein the projection-type light source module has projection beams of more than two colors with varying wavelengths of visible light. The high-efficiency projection-type luminous traffic sign as described in claim 1 further includes a bracket installed beside the road and extending to a position above the road, and the traffic sign is set on the bracket. The high-efficiency projection-type luminous traffic sign as described in Claim 1 further includes a frame disposed beside the road, and the projection-type light source module is disposed on the frame and faces the traffic sign. The high-efficiency projection-type luminous traffic sign as described in Claim 1 further includes a frame set beside the road, and a plurality of projection-type light source modules arranged at intervals are arranged on the frame. The high-efficiency projection-type luminous traffic sign as described in Claim 1, wherein the traffic sign is any one or a combination of two or more of the foregoing warning signs, prohibition signs, instruction signs, and auxiliary signs.

Images