JP2009138437A - Light emitter for road, and light emission indication system for road - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light emitter for a road, which is excellent in visibility for drivers, and high in attention attracting function (accident preventing function). <P>SOLUTION: The light emitter 1 is formed of a first light emitting surface 2 for emitting light in a direction opposed to the driver D, and a second light emitting surface 3 for emitting light in a direction that crosses the road R. Light is emitted from both the light emitting surfaces 2, 3 by means of LED lamps 16 separately from each other. The surface of the light emitter other than the light emitting surfaces 2, 3 is covered with a case 10, and therefore light diffusion from the light emitter is minimized. For example, by successively lighting the light emitters 1 at a transfer speed that is the same as a safety speed, along a traveling direction of a vehicle A, the driver D is informed of a separation from the safety speed. Further each light emitter has the first light emitting surface 2 and the second light emitting surface 3, and therefore the driver D can easily visually recognize lit-up states of both the far-off light emitter 1 and the nearby light emitter 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a light-emitting device that is installed along a road to alert a vehicle driver, and a light-emitting display system using the light-emitting device.

  Light emitters have been installed or proposed along the road to alert the vehicle driver and help prevent accidents. The light emitters that are actually installed include the flashing type that is installed outside the roadway and the flashing type that is embedded in the boundary of the lane. It can be said that it is only a sign that clearly shows the boundary.

  On the other hand, many of the traffic accidents are caused by excessive speed, but the actual vehicle speed often becomes faster than the perceived speed by accustoming to the speed. There are cases leading to. Therefore, a number of flashing light emitters are installed side by side along the road, and the light emitters are turned on and off sequentially in the forward direction of the vehicle. A system that perceives certain things and promotes self-control has been proposed (for example, Patent Documents 1 to 3).

  That is, when a number of light emitters installed side by side along the road are turned on / off in order along the forward direction of the vehicle, the driver feels that the group of light from the light emitters is running in parallel with the vehicle. However, if the light-on transition speed is the same as the safe speed, when the vehicle is traveling at a speed higher than the safe speed, the light groups of the light emitters move away from the vehicle relatively and the vehicle It will overtake the group, and the driver will perceive that it is overspeed and shift to deceleration, and let it be a trigger for deceleration by visually recognizing that it is over the safe speed It is what.

In Patent Document 4, a large number of light emitters and vehicle speed sensors that can switch the emission color between red and green are arranged along the road, and an appropriate inter-vehicle distance at which the vehicle can be safely stopped is calculated from the vehicle speed. If the distance between the vehicles is equal to or longer than the appropriate distance between the vehicles, each light will be lit in green, and if the actual distance between the vehicles is shorter than the appropriate distance between the vehicles, each light will be lit in red. A system for awakening is disclosed.
Japanese Patent Laid-Open No. 7-26523 JP 2000-144654 A JP 2004-192556 A Japanese Patent Laid-Open No. 10-60834

  For light emitters for roads, the visibility of the driver of the vehicle traveling forward, the driver of the vehicle traveling on the opposite lane is not obstructed, or conditions such as durability and weather resistance are required. . However, in Patent Documents 1 to 4, it can be said that these visibility improvements and consideration for oncoming vehicles have not been achieved.

  The present invention has been made in view of such a current situation, and has as its first object to provide a light-emitting device that is highly realistic, such as being excellent in a driver's alerting function (accident prevention function). . Another object of the present invention is to provide a system (control method) having a high guide function to the driver when using a large number of light emitters.

  The present invention includes a light emitter and a display system using the light emitter. Of these, the invention of claim 1 relates to a light emitter, which is a large number of light emitters installed in a flying state along a road, and irradiates light from a substantially forward direction to a vehicle that moves forward. A first light emitting surface for emitting light emitted from a substantially lateral direction to the vehicle traveling forward, a first light source for emitting light emitted from the first light emitting surface, and the second light emitting A second light source that emits light emitted from the surface, and cover means that covers the light from the light source so as not to leak outside from a portion other than the light emitting surface.

  The invention of claim 2 also relates to a light emitter, and a large number of the light emitters are installed in a state of jumping along the road, from the front and the lateral direction to the driver of the vehicle traveling forward. A light emitting surface that is inclined, curved, or bent in plan view so that light can be emitted, a light source that emits light emitted from the light emitting surface, and light from the light source so that it does not leak outside from the portion other than the light emitting surface. Cover means for covering.

  The invention according to claim 3 also relates to a light emitter, and in the invention according to claim 1 or 2, the cover means and the light emitting surface are elongated in the vertical direction, while the light sources are arranged in a large number in the vertical direction. The light emitting diode lamps can be freely selected from at least red, green, yellow and colorless.

  According to a fourth aspect of the present invention, there is provided a display system using the road light emitter according to the first aspect. In the present invention, the first light source and the second light source of the light emitter can freely select colors and blink. A number of road light emitters are controlled so that the second light source is turned on and the first light source is turned on and off in the order in which they are arranged in the forward direction of the vehicle.

  The invention of claim 5 is a road light emitting display system in which the light emitters of claims 1 to 3 are preferably used. In other words, this system is a system that alerts the driver of the vehicle by controlling lighting / extinction of a large number of light emitters arranged along the road, and the plurality of light emitters are composed of a plurality of groups. The plurality of light emitter groups may be arranged such that different groups of light emitters are alternately arranged along the road, or the height of the plurality of light emitter groups is changed along the road while the different groups of light emitters are paired. Each group is individually controlled to turn on / off the light emitters.

  The fifth aspect of the present invention includes alternately arranging different groups of light emitters along the road with their heights changed. Further, “light emission / extinguishing” includes changing the color of irradiation light. Note that each group being controlled individually does not mean that the light emission state of each group is always different. By controlling each group to the same state, the entire light emitter can be turned on / off in the same manner (this point will be easily understood from the embodiment).

  When a person drives the vehicle, the driver must watch the rear mirror or the side mirror (or fender mirror) while keeping his face facing forward, and pay attention to the rear of the vehicle. In this case, if the light from the light emitter is reflected on the rearview mirror or side mirror, the driver may be distracted and divert attention from the front. On the other hand, since the light emitter of the present invention does not irradiate light forward in the traveling direction of the vehicle, the light of the light emitter behind the vehicle is rarely reflected on the rearview mirror and side mirror. This prevents the driver's attention from being distracted.

  In addition, for example, when the light emitter illuminates a wide area like a street light, the row of light emitters will continue to blur and alert the driver due to excessive diffusion of light. Although the function may be weakened, in the present invention, since the range in which the light from the light emitter spreads is limited, the light from the light emitters adjacent to each other is separated from each other and enters the driver's view. Therefore, the sharpness is good and the visibility from the driver is high.

  In the present invention, the light emitter in front of the vehicle can achieve high visibility for the driver, while the light emitter that has moved to the rear of the vehicle will cause light to quickly disappear from the driver's field of view. It can be said that the alerting function for the elderly is high.

  If the 1st and 2nd light emission surface which light-emits by a separate light source like Claim 1 is provided, the 1st light emission surface will blink, and the 2nd light emission surface will always be in a lighting state (mode of Claim 4), Various control modes such as lighting and blinking the first and second light emitting surfaces in the same state and changing the color of light emitted between the first light emitting surface and the second light emitting surface can be adopted. There is an advantage that it is possible to adopt a flexible display mode according to road conditions. On the other hand, the invention of claim 2 has an advantage that the structure is simplified because there is one light emitting surface and one light source.

  In consideration of various conditions such as switching responsiveness, durability, power consumption, and ease of color change, the light source of the light emitter is preferably a light emitting diode lamp (LED) as in the present invention. And there are many types of vehicles with different heights, but if the light emitter is in a vertically long shape as in claim 3, the driver can visually recognize the entire light emitting surface regardless of the vehicle height. Can be used.

  The system (method) according to claim 4 causes a psychological action such as causing the driver to decelerate or restrain acceleration by lighting a group of light emitters in order, and the second light emitting surface is turned on for each light emitter. By maintaining the state, the driver can recognize the appropriate speed by turning on and off the first light emitting surface in order while functioning in the same manner as a sign that displays the road boundary. It is expected to have a high alert function and contribute to safe driving.

  In this case, when a light source capable of changing the emission color is used as in claim 3, for example, the second light emitting surface is green (or yellow) and the first light emitting surface is red, or the second light emitting surface is colorless. It is preferable that an optimal display mode according to the road condition can be realized by changing the light emission color of the first light emitting surface and the second light emitting surface, such as making one light emitting surface yellow.

  The system according to claim 5 corresponds to the superordinate concept of the system according to claim 4, and the detailed display state corresponding to the road condition and the vehicle running condition is obtained by making the light emission state of each group different or the same. Can be realized. As shown in the embodiment, the light emitter of the present invention is not limited to the system of claim 4 and can realize various display systems.

  Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 5 show the first embodiment, and FIG. 2 and subsequent drawings show other embodiments. Hereinafter, the first embodiment will be described in order.

(1). Structure of light emitter according to the first embodiment FIG. 1A is a schematic plan view showing an installation state of the light emitter 1 of the present embodiment. In this embodiment, the road is a median strip. It is composed of a one-lane roadway R on both sides of C, and a sidewalk W is juxtaposed outside the roadway R. In the central separation band C, a large number of light emitters 1 are arranged in a row at an appropriate interval (for example, several meters). Reference symbol A indicates a vehicle.

  In FIG. 1, the road R has a curve, and the group of light emitters 1 is arranged on the right side of the vehicle A on the left-curved road R. On the other hand, on the right curved road R1, the group of the light emitters 1 is arranged on the right side of the vehicle A (indicated by a white square) and arranged on the left side of the vehicle A (indicated by a black square). However, from the viewpoint of the driver's visibility, it can be said that it is preferable to dispose it on the left side of the driver as indicated by a black square.

  FIG. 1B is a schematic perspective view of the light emitter 1. As shown in this figure, the light emitter 1 has a vertically elongated shape, and a first light emitting surface 2 and a second light emitting surface 3 that are substantially orthogonal in a plan view. And two light emitting surfaces. Hereinafter, the structure of the light emitter 1 will be described with reference to FIGS. 2A is a cross-sectional view taken along line AA in FIG. 1B, FIG. 2B is a partial cross-sectional view taken along line B-B in FIG. 1A, and FIG. It is a fragmentary sectional view.

  In the light emitter 1 of the present embodiment, the first unit 4 having the first light emitting surface 2 and the second unit 5 having the second light emitting surface 3 are used as a set. Both units 4 and 5 have basically the same structure, and the two units 4 and 5 are overlapped so as to be aligned in the longitudinal direction of the road, and are held together by the upper plate 6, the lower plate 7 and the back plate 8. Has been. In the following description of the structure of the light emitter 1, the terms “front and rear” and “left and right” are used. The front, rear, left, and right are fronted on the surface facing the roadway R. Is different.

  In the present embodiment, the first unit 4 and the second unit 5 constitute one light emitter 1, but when viewed as the embodiment of claim 5, the first light emitter group is formed by the group of the first units 4. It is considered that the second light emitter group is configured by the group of the second units 5. As can be understood from this, in claim 5, different groups of light emitters may be set to have one appearance.

  Both units 4 and 5 have basically the same structure, and as shown in FIG. 2A, a groove-shaped outer case 10 and a bowl-shaped first arranged so as to close the opening of the outer case 10. A box-shaped second inner cover 12 disposed in a space surrounded by the inner cover 11, the outer case 10 and the first inner cover 11; a circuit board 13 disposed in the second inner cover 12; A first sealing material (spacer) 14 disposed in a closed space surrounded by the second inner cover 12 and the circuit board 13, and a second space enclosed by the second inner cover 12 and the circuit board 13 and filled in the bowl-shaped space. 2 and a plurality of LED lamps (light emitting diode lamps) 16 are mounted on the front surface of the circuit board 13 at appropriate intervals.

  Case 10 is an extruded product of aluminum and is therefore opaque (an opaque resin product can also be used). In this embodiment, the case 10 corresponds to the cover means described in the claims. An inward lip 17 is provided at the opening of the case 10 (the leading edge of the side plate 10a), so that the first inner cover 11 is held so as not to be removed forward. The front surface of the case 10 and the front surface of the first inner cover 11 are formed on substantially the same plane.

  A first inward rib 18 is formed in a portion of the case 10 near the base end of the left and right side plates 10 a, and the first inner cover 11 extends to the location of the first inward rib 18. The first inner cover 11 and the second inner cover 12 have a box shape that opens toward the bottom plate 10b of the case 10, and are fitted to each other. Further, a second inward rib 19 is formed at a position slightly in front of the bottom plate 10 b of the left and right inner side surfaces of the case 10, and the second inner cover 12 extends to the location of the second inward rib 19. The second inner cover 12 is substantially equal in thickness, and is therefore uneven at the location of the first inward rib 18.

  Then, the circuit board 13 is positioned by overlapping the stepped portion of the second inner cover 12 from the rear side, and the circuit board 13 is sealed with the second sealing material 15. The first sealing material 14 has a substantially H-shaped cross section, and the LED lamp 16 is not in close contact with the first sealing material 14, but the space enclosed by the circuit board 13 and the first inner cover 12 is the first seal. It is also possible to completely seal with the material 14.

  The first inner cover 11, the second inner cover 12, and the first sealing material 14 are each made of a transparent resin. As the material, since the first inner cover 11 is exposed to the outside air, a material having excellent weather resistance and strength such as polycarbonate is preferable. For example, a transparent acrylic resin can be used for the second inner cover 12 and the sealing materials 14 and 15.

  A portion of the case 10 between the bottom plate 10 b and the second inward rib 19 is an arcuate vertical groove 20, and the top plate 6 and the bottom plate 7 are fastened to the case 10 by screws screwed into the vertical groove 20. is doing. A portion between the second sealing material 15 and the bottom plate 10b is a space, and the cable connected to the circuit board 13 is drawn to the outside through this space (the cable drawing hole is, for example, the lower plate 7). Provided.) Further, the LED lamp 16 has a structure in which diode chips of three colors of red, blue, and green are sealed with glass, so that any color can be developed.

  Back ribs 21 projecting rearward from the bottom plate 10b are integrally provided at the rear ends of the left and right side plates 10a of the case 10. The rear rib 21 is formed in an inward saddle-like claw shape, and the front rib 8 a provided on one back plate 8 is engaged (fitted) with the rear rib 21 in the left and right cases 10. The engagement of the forward claws 8a with the back rib 21 is performed by relatively moving the back plate 8 from the vertical direction of the case, and the back plate 8 is held by the upper plate 6 and the lower plate 7 so as not to move up and down. .

  As shown in FIG. 2 (B), the upper plate 6 and the lower plate 7 are provided with positioning projections 23 that fit into both sides of the inside of the case 10 with the bottom plate 10b interposed therebetween. The upper plate 6 and the lower plate 7 are made of an opaque resin, but a metal product such as an aluminum die cast product can also be used. The back plate 8 is a resin molded product or an aluminum extruded product, but a sheet metal product or the like can also be used. It can be said that metal products are preferable from the viewpoint of strength and weather resistance.

  The specific installation method of the light emitter 1 can be selected according to the road conditions. When the guard rail is provided in the central separation band C, as shown in FIG. 2 (B), the pillar P is fastened to the inner side surface of the guard rail G with the fastener (bolt and nut) F via the spacer S. And the back cover 22 can be fastened with bolts (or screws) B. A dedicated column (pole) can be erected along the road, and the light emitter 1 can be attached to the column. Moreover, what is necessary is just to fix to a wall via brackets, when the one side of a roadway is comprised with the wall.

  The light emitter 1 basically includes two units 4 and 5 having the same structure as main members, but as shown in FIGS. 1B and 2B, of the left and right side plates 10a of the first unit 4. The side plate 10a that does not overlap the second unit 5 is greatly cut up and down on the front side of the first inward rib 18 (a notch hole is indicated by reference numeral 24), thereby forming the first light emitting surface 2. is doing. The front surface of the first unit 4 is covered with a shielding material 25 so as not to transmit light. As the specific structure of the shielding material 25, various methods such as applying an opaque paint, applying an opaque adhesive (adhesion) tape, and fitting a cover made of an opaque resin or metal plate can be adopted. .

  The display system including a large number of light emitters 1 includes a control device, and the control device can freely set on / off and light emission colors of the LED lamps 16 in each light emitter 1 automatically or by input operation. . As for lighting / extinguishing, lighting time, blinking time interval, lighting / extinguishing timing, etc. can be arbitrarily set. What is necessary is just to select the magnitude | size and arrangement | positioning space | interval of the light-emitting device 1 according to a road condition. Regarding the size, it can be said that the vertical length may be about 30 cm.

(2) Relationship between light emitter and driver Next, how the light of the light emitter 1 looks to the driver will be described with reference to FIG. 3A is a plan view schematically illustrating a state in which the vehicle A travels on the road where the light emitter 1 is disposed, and FIG. 3B is a diagram illustrating the relationship between the travel of the vehicle and the light emitting surfaces 2 and 3. (C) is a diagram showing the relationship between the first light emitting surface 2 and the driver D when traveling on a curve, and (D) is the relationship between the first light emitting surface 2 and the driver D when traveling on a straight road. FIG.

  The light emitter 1 is disposed such that the second light emitting surface 3 is orthogonal to the roadway R in plan view. The light emitter 1 irradiates light only in a range of about 90 degrees in a plan view when light diffusion is ignored. For this reason, does the irradiation light irradiate the driver D in a concentrated manner? (The directivity is high). For this reason, the light of the light-emitting device 1 is intermittently inserted into the eyes of the driver D, and thus it can be said that the function of alerting the driver D is high.

  The light from the light emitter 1 located behind the vehicle enters the eyes of the driver through the rearview mirror and the side mirror M. If light diffusion is ignored, the light emitter 1 behind the vehicle Only the light is reflected on the mirror M, the light on the first light emitting surface 2 is not reflected on M, and the area on which the first light emitting surface 2 is reflected becomes narrower as the distance from the vehicle increases. Rarely enters the eyes of the driver D through the mirror M, and therefore it can be said that the trouble of the driver D's attention or the rear of the vehicle being pulled by the light of the light emitter 1 behind the vehicle can be suppressed. .

  On the other hand, as for the light emitter 1 in front of the vehicle A, as can be easily understood from FIG. 3 (B), the light emitting device 1 that is farther away basically has a larger area 27 where the first light emitting surface 2 can be seen. 2 The visible area of the light emitting surface 3 is small. In this case, if there is only the second light emitting surface 3, the second light emitting surface 3 in the row of the light emitters 1 is difficult to see unless it is close, so the alerting function for the driver D is low, and only the first light emitting surface 2 exists. And the light of the nearby light emitter 1 becomes difficult to visually recognize, and this also has a low alerting function for the driver D.

  On the other hand, in the present invention, since the first light emitting surface 2 and the second light emitting surface 3 exist, it is easy for the driver D to visually recognize the light from both the distant light emitting device 1 and the nearby light emitting device 1. It can be said that the alert function is high. Moreover, since the part except the 1st light emission surface 2 and the 2nd light emission surface 3 is covered with the case 10, and light does not spread | diffuse to circumference | surroundings, it can be said that directivity is high and it is excellent. In particular, when the row of the light emitters 1 is provided in the central separation zone C as in the embodiment, the light emitters 1 in the opposite lane are not in the eyes of the driver D, and therefore, it is not confusing and suitable.

  Accidents due to excessive speed often occur on a curve, but it is particularly preferable that the light emitter 1 of the present invention is installed on the right side of the vehicle on the left curve. That is, in the case of a straight road, the area where the first light emitting surface 2 enters the eyes of the driver D becomes smaller as the light emitter 1 becomes farther in (D), but can be easily understood from (A) and (C). Thus, when the vehicle is installed on the right side of the vehicle with a left curve, the driver D appears to have a wider left-right distance L between the light emitters 1 adjacent to each other, so that the row of the first light emitting surfaces 2 in the light emitter 1 is displayed. As a result, the visibility of the first light emitting surface 2 is increased, and as a result, the driver D can be strongly alerted. In addition, since the 2nd light emission surface 3 exists, even if it arrange | positions the light-emitting device 1 on the right side of a vehicle on the roadway R of a right curve, it can be said that the visibility from the driver | operator D is high.

(3). Specific Lighting Control Example FIG. 4 shows a control example in which the driver D is restrained from excessive speed by turning on the light emitters 1 in order. That is, the first light emitting surface 2 (or the first light emitting surface 2 and the second light emitting surface 3) of the large number of light emitters 1 are turned on / off in order in the forward direction of the vehicle. Is set to a safe speed V0 (for example, legal speed). The vehicle A2 is traveling at a safe speed V0. In this case, since the light from the light emitter 1 is running in parallel at the same speed, the driver D grasps that the driver D is traveling at a safe speed. can do.

  On the other hand, the vehicle A1 is in an overspeed state, and in this state, the light emitted from the group of the light emitters 1 is overtaken, so that the light of the light emitter 1 moves relatively backward. Thus, it can be said that the driver D has a psychological action to be pulled back, and as a result, the driver D has an incentive for deceleration. The vehicle C is traveling at a speed that is excessively lower than the safe speed, but for the driver D of the vehicle, the light movement of the light emitter 1 seems to be drawn forward, so that the driver A3 is accelerated. Incentive works. If the speed is too low, it may be dangerous to induce the frustration of the driver D of the following vehicle, and it may be necessary to accelerate it.

  Since a large number of vehicles are traveling on the road R, it is important to appeal to the driver D's vision at any place on the road R. With respect to this point, as schematically shown in FIG. 5, it is realistic to group a large number of light emitters 1 in an appropriate number in order and control each group (group) to be turned on / off individually. (The “group” in FIG. 5 is different from the “group” in claim 5). Needless to say, the adjacent groups are controlled in relation to each other, and as a result, the light emitter 1 lights up at the same moving speed for the driver D of the vehicle A traveling at a safe speed. It becomes a state.

  In each group, it can be said that there are three basic modes for sequentially turning on and off the light emitter 1. The first mode is a state in which only one light emitter 1 is lit in one group. That is, it is a mode in which lighting and extinguishing are switched as a set, such as turning on / off the first light emitter 1 and turning on / off the second light emitter 1. In this case, each light emitting device 1 is turned off from the lighting time. Long time. FIG. 5 can be said to show this aspect.

  The second mode is a mode in which once the lamp is turned on, the lamp is continuously turned on until the final number is turned off. In this case, the lighting time is longer for the light emitting device 1 whose lighting order is younger. In the third mode, for example, a state in which the plurality of light emitters 1 are lit at the same time, such as the first continues to be lit until the third is turned off, and the second is lit until the fourth is turned off. This is a mode of transition. What is necessary is just to select an optimal aspect according to the condition of a road.

(4). Mode of lighting / extinguishing (A) and (B) in FIG. 6 show examples of modes of lighting / extinguishing in the individual light emitters 1. The lighting state is indicated by oblique lines, and the light-off state is indicated by no mark. In (A), the second light emitting surface 3 is left in a lighting state, and only the first light emitting surface 2 is turned on / off. Therefore, in the examples of FIGS. 4 and 5, only the first light emitting surface 3 is lit at a safe speed.

  In the example shown in FIG. 6B, both the first light emitting surface 2 and the second light emitting surface 3 are turned on / off simultaneously. In this case, each light emitter 1 is in a single lamp state. Although not shown, the second light emitting surface 3 is turned off and only the first light emitting surface 2 is turned on / off, or the first light emitting surface 2 is turned off and only the second light emitting surface 3 is turned on. There may be a mode of turning off the light.

  Moreover, it is also possible to make the luminescent color of the 1st light emission surface 2 and the 2nd light emission surface 3 different. For example, the second light emitting surface 3 is always lit in yellow and the first light emitting surface 2 is turned on / off sequentially in red, or the first light emitting surface 2 is lit in red in order. Is a mode of turning on and off sequentially in yellow, or a mode in which the second light emitting surface 3 is blinking yellow in small increments and the first light emitting surface 2 is sequentially turned on and off in blue.

(5). Another example of structure of light emitting device FIGS. 6C to 6G show another example of the structure of the light emitting device 1. Among them, in (C), the first light emitting surface 2 is divided into three upper and lower parts 2a, 2b and 2c, and an arbitrary light emitting color can be selected for each part. Further, in (D), in addition to the first light emitting surface 2, the second light emitting surface 3 is also divided into three parts 3a, 3b, 3c, and an arbitrary light emission color can be selected for each part. In the case of the first embodiment, a large number of LED lamps 16 arranged one above the other may be divided into three groups, and lighting / extinguishing may be controlled arbitrarily for each group. Accordingly, in (C) and (D), the appearance is the same as that of the first embodiment.

  In the example shown in (E), three vertically long rectangular window holes 28 are formed in the outer case 10 as means for dividing the first light emitting surface 2 into three parts 2a, 2b, 2c. As described above, the group of the built-in LED lamps 16 is divided into three upper and lower groups. When the light emitting surfaces 2 and 3 are divided into a plurality of upper and lower parts as in (C) to (E), the light emission color of each part is changed and each part is lighted in order from the top (or from the bottom). Control can be realized.

  In the first embodiment, one light emitter 1 is configured by two units 4 and 5. However, in the example shown in FIG. 6F, the first light emitting surface 2 and the second light emitting element are formed in one case 10 having a square shape in plan view. Surface 3 and two groups of LED lamps 16 are provided. The light emitting surfaces 2 and 3 of the case 10 are configured by opening a large notch hole 24 in two adjacent wall plates. Fastening holes 29 are provided at four corners of the case 10. The two circuit boards 13 are orthogonal to each other and are attached to the transparent inner cover 30.

  FIG. 6G shows a specific example of claim 2. In this example, the case 10 is formed in a substantially L-shaped cross section, and the inner cover 30 is a bent type facing two intersecting virtual surfaces 31. The light emitting surface 33 is provided. The plane cross-sectional shape of the light emitting surface may be curved or the same shape as the virtual surface 31 of the two-dot chain line. The case 10 is provided with an inward lip 17 for preventing the inner cover 30 from coming off. In (E) and (G), it is possible to divide the LED lamp 16 into a plurality of upper and lower groups and control the color development and lighting for each group (each embodiment can be combined with each other).

(6). Other Control Examples As already described, the light emitter 1 of the present invention can be controlled in various ways. FIG. 7 shows another example of control. Among them, in the example shown in (A), a large number of light emitters 1 are blinked simultaneously. For example, when an accident occurs, the driver D is alerted by flashing a large number of light emitters 1 arranged after the accident site in red, or conversely, when the car is flowing smoothly It is possible to blink blue.

  In the example of (B), the blinking state is shifted in the direction opposite to the forward direction of the vehicle. For example, when an accident occurs, the red blinking state is shifted toward the distance from the accident site, so that an incentive for deceleration can be given to the driver D to contribute to prevention of secondary damage. The example of (C) is an example which maintains many light-emitting devices 1 in a lighting state. Needless to say, the light emitter 1 also functions as a sign.

  Although not shown, it is also possible to link the group of the light emitters 1 and the traffic light. For example, the group of light emitters 1 blinks yellow before the traffic light turns yellow, blinks red before it turns red, and continues to light green after moving to blue. By controlling, early braking is promoted. It can be said that it is particularly effective if it is installed in a place with a traffic light at the end of a gentle curve. A number of vehicle speed sensors for detecting the speed of the vehicle are arranged on the road, and if there is an overspeed vehicle, the light emitter 1 blinks in red according to the traveling position, or the light emitter 1 is moved in the direction opposite to the forward direction of the vehicle. It is also possible to turn on the lights in order and issue a warning to the driver D. It is also possible to change the color depending on the environment, such as changing the emission color by day and night or by the presence or absence of fog.

(7). Other embodiment (FIG. 8)
FIG. 8 shows still another embodiment. Among these, (A) shows that two light emitters 1 'and 1 "are arranged at different heights, and the upper light emitter 1' is provided with a second light emitting surface 3 to emit light at the lower stage. A first light emitting surface 2 is provided on the device 1 ″. When viewed as an embodiment of claim 5, the upper light emitter 1 ′ and the lower light emitter 1 ″ constitute different groups, and the upper and lower light emitters 1 ′, 1 ″ are arranged along the road. Arranged in a flying state. A space may be provided between the upper and lower light emitters 1 ′ and 1 ″.

  (B) shows a modification of (A). In this example, the lower light emitting device 1 ″ has a first light emitting surface 2 and a second light emitting surface 3. The upper light emitting device 1 is shown. It is also possible to provide two light-emitting surfaces 2 and 3 on 'and two light-emitting surfaces 2 and 3 on both upper and lower light emitters 1' and 1 ''.

  In the example shown in (C), two light emitters 1 ′ and 1 ″ are overlapped so as to be aligned in the traveling direction of the vehicle. The second light emitter 1 ′ positioned forward in the forward direction of the vehicle is the second light emitter 1 ′. Only the light emitting surface 3 is provided, and the first light emitting surface 2 and the second light emitting surface 3 are provided in the light emitting device 1 ″ located in front of the vehicle in the forward direction. It is also possible to provide only the first light emitting surface 2 in the front light emitter 1 ″.

  In the example shown in (D), a light emitter 1 ′ having a second light emitting surface 3 and a light emitter 1 ″ having a first light emitting surface 2 are arranged in an L shape in plan view. One light emitter 1 ′, 1 ″ is arranged in a different posture to constitute one set. In the example of (E), the light emitter 1 ″ having the first light emitting surface 2 is inclined in a plan view with respect to the road R. In addition, in (A) to (E), the light emitter 1 ′. , 1 ″ can be replaced by the word “unit” and it can be seen that two units constitute one light emitter.

  (F) shows another example of the system. In this example, the light emitting device 1 ″ having the first light emitting surface 2 and the light emitting device 1 ′ having the second light emitting surface 3 are separated from each other by an appropriate interval. The light emitters 1 ″ having the first light emitting surface 2 and the light emitters 1 ′ having the second light emitting surface 3 constitute different groups, and both groups are lit.・ Light-off is controlled individually.

  (G) shows another example of the control method. In this example, an appropriate range before the curve, for example, on the roadway R is defined as the first area E1, and an appropriate range before and after the curve is included in the first area E1. As two areas E2, a large number of light emitters 1 (1 ′, 1 ″) are arranged at appropriate intervals in both areas E1, E2. Further, a first vehicle speed sensor S1 is provided at the entrance of the first area E1. A second vehicle speed sensor S2 is provided at the outlet of the first area E1.

  A control example of the group of light emitters 1 in this example is as follows. That is, the light emitter 1 arranged in the first area E1 alerts the first and second light emitting surfaces 2 and 3 by always blinking yellow, and is detected by the first vehicle speed sensor S1 and the second vehicle speed sensor S2. Based on the results, 1) When vehicle A enters the first area E1 at a safe speed and exits at a safe speed, or vehicle A enters the first area E1 at a dangerous speed but exits at a safe speed When going, each light emitter 1 in the second area E2 blinks yellow or blue (green), or keeps yellow (or blue) on, or keeps it off. Further, yellow or blue is turned on / off in turn at the same transition speed as the safe speed. 2) When the vehicle A enters the first area E1 at the dangerous speed and goes out at the dangerous speed, or the vehicle A When entering the first area E1 at a safe speed but leaving at a dangerous speed In this case, the respective light emitters 1 in the second area E2 are controlled to blink in red, or to turn on / off sequentially in the direction opposite to the forward direction of the vehicle.

  A large number of vehicle speed sensors are installed in the first area E1, or a vehicle (or a group of vehicles) is photographed as a moving image with a camera disposed above the roadway B, and a process of dividing the moving distance of the image by time is performed. It is also possible to calculate the approach speed of the vehicle A to the second area E2 and to control the lighting / extinction of the light emitter 1 in the second area E2 based on the calculated value (in the speed violation photographing device) It can also be linked.) In (F), for example, when there is a dangerous second area E2 in which accidents frequently occur, the first area E1 in front of the second area E1 is used as a vehicle speed detection and deceleration area. The device 1 can also be used where the lamp simply lights up.

(8). Others The present invention can be variously embodied in addition to the above-described embodiments in both the structure of the light emitter and the control method. For example, the case does not need to have a square shape with a flat cross section, and may be, for example, a circle or an ellipse. As the light source, an LED lamp is suitable, but an organic EL or the like can also be adopted. Note that the light emitter of the present invention can be arranged on the left side roadside belt in the traveling direction of the vehicle.

(A) is a schematic plan view which shows the installation state of the light-emitting device of this embodiment, (B) is a schematic perspective view of a light-emitting device. FIG. 2A is a sectional view taken along line IIA-IIA in FIG. 1B, FIG. 2B is a partial sectional view taken along line BB in FIG. 1A, and FIG. It is a figure which shows the relationship between a driver | operator and a light emission surface. It is a schematic diagram which shows an example of control. It is a schematic diagram which shows an example of control. It is a figure which shows another example of control of blinking, and a structure. It is a figure which shows another example of control. It is a figure which shows other embodiment.

Explanation of symbols

R Roadway C Median strip 1,1 ′, 1 ″ Light emitter 2 First light emitting surface 3 Second light emitting surface 4,5 Unit 10 Outer case as an example of protection means 13 Circuit board 16 LED lamp 11, 12 Inner cover 14 , 15 Seal material

Claims (5)

A number of light emitters installed in a flying state along the road,
A first light emitting surface for irradiating light from a substantially forward direction to a vehicle traveling forward, a second light emitting surface for irradiating light from a substantially lateral direction to a vehicle traveling forward, and irradiation from the first light emitting surface A first light source that emits light, a second light source that emits light emitted from the second light emitting surface, and cover means that covers the light from the light source so that it does not leak outside from a portion other than the light emitting surface. ing,
Road light emitter. A number of light emitters installed in a flying state along the road,
A light emitting surface that is inclined, curved, or bent in plan view so that light can be emitted from the front and lateral directions to a driver of a vehicle traveling forward, a light source that emits light emitted from the light emitting surface, and the light source Cover means for covering so as to prevent light from leaking outside from the portion excluding the light emitting surface,
Road light emitter. The cover means and the light emitting surface are elongated vertically, and the light source is composed of a number of light emitting diode lamps arranged in the vertical direction, and each light emitting diode lamp is free of at least red, green, yellow and colorless. Can be selected,
The light-emitting device for roads described in Claim 1 or 2. The first light source and the second light source can be freely selected between color selection and blinking state, and a number of road light emitters are turned on while the second light source remains on and the first light source is a vehicle. It is controlled so that lighting and extinguishing are repeated in the order lined up in the forward direction.
A light-emitting display system for roads using the road light-emitting device according to claim 1. A system that alerts the driver of the vehicle by controlling the turning on and off of many light emitters arranged along the road,
The multiple light emitters are composed of a plurality of groups, and the plurality of light emitter groups are arranged such that different groups of light emitters are alternately arranged along the road, or different groups of light emitters are paired. It is arranged in a state where the height is changed and jumped along the road, and it is possible to individually control the turning on and off of the light emitter for each group.
Luminous display system for roads.

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