JP2022083692A - Vehicular lamp - Google Patents

Abstract

To provide a vehicular lamp which causes the other person to more recognize an own vehicle.SOLUTION: In a vehicular lamp, a light source is disposed in a lamp chamber defined by a lamp body and a lamp cover, a diffusion step which forms a first light distribution by diffusing emitted light from the light source is formed in an upper region of the lamp cover, and a cylindrical step which forms a second light distribution of a stripe pattern alternately continuing light parts and dark parts from the emitted light from the light source is formed in a lower region of the lamp cover. In addition to the first light distribution required as the vehicular lamp, the second light distribution is formed in the stripe pattern on a road surface in the vicinity of a vehicle, such that a pedestrian or a following vehicle near the vehicle is caused to more recognize the own vehicle.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vehicle lamp.

The vehicle is provided with a sign lamp (turn signal lamp) indicating a traveling direction (for example, Patent Document 1). This is to prevent accidents by making pedestrians and following vehicles visually recognize the moving direction of the own vehicle to call attention.

JP-A-2010-260545

However, there are many accidents in which pedestrians do not notice the indicator lights and are caught in vehicles that have turned right / left. This is not limited to indicator lamps, but there is a demand for vehicle lamps that can make pedestrians and parallel-running vehicles more aware of their own vehicles and call their attention.

The present invention has been made in view of this, and provides a vehicle lamp for making another person recognize the own vehicle.

In order to solve the above-mentioned problems, in some aspects of the vehicle lamps of the present disclosure, the bright part and the dark part are formed toward the front to form the first light distribution required for the lamp and toward the lower part in the vicinity. It was configured to form a second light distribution with alternating and continuous striped patterns.

According to this aspect, a striped second light distribution is formed on the road surface below the vicinity, that is, near the vehicle on which the vehicle is mounted, together with the first light distribution required for a vehicle lighting tool. With the second light distribution, it is possible to make surrounding pedestrians and the like more aware of the own vehicle and call attention to it.

Further, in one embodiment, a light source is arranged in a lamp chamber defined by a lamp body and a lamp cover, and the emitted light of the light source is diffused in an upper region of the lamp cover to form a first light distribution. A vehicle lamp fixture in which a step is formed and a cylindrical step is formed in a lower region of the lamp cover to form a second light distribution in a striped pattern in which bright and dark parts are alternately continuous from the emitted light of the light source. offer.

According to this aspect, the first light distribution and the second light distribution can be formed from the emitted light of the light source by using the lamp cover as the light distribution forming member. The first light distribution is radiated as the light distribution required for vehicle lighting equipment, and the second light distribution is radiated on the road surface near the vehicle so that the surroundings can recognize the own vehicle and call attention. ..

Further, in one embodiment, the lower region of the lamp cover forming the second light distribution is configured to be the bottom surface of the lamp cover. According to this aspect, the second light distribution can be formed at the required place by effectively utilizing the part of the lower region which is not so important as a vehicle lamp.

Further, in one embodiment, the cylindrical step has a shape in which a plurality of convex curved surfaces having a convex curve extrusion shape are continuously provided in a direction orthogonal to the extrusion direction as an incident surface. According to this aspect, the convex curved surfaces extending in one direction form a line-shaped light distribution, and the second light distribution is formed as a striped pattern in which a number of bright portions are lined up substantially in parallel.

Further, in one embodiment, the radius of curvature of the convex curved surface is configured to be smaller as it is closer to the light source, and the brightness of the bright portion of the striped pattern is substantially uniform at least near the center of the second light distribution. It was configured to be configured in. In the past, the closer to the light source, the brighter the part, so the central part became very bright and the brightness of the light distribution became uneven. It can be configured to increase the recognition level as a striped light distribution.

Further, according to a certain aspect, the second light distribution is configured so that the widths of the bright part and the dark part of the striped pattern are formed substantially uniformly. By configuring the widths of the bright and dark areas to be substantially uniform, it is recognized as a clear light distribution pattern, and it is possible to draw more attention to the surroundings.

Further, as an aspect of the lamp cover of the present disclosure, a predetermined step is formed on the inner surface, light is incident from the inner surface side, formed into a predetermined light distribution, and emitted toward the outer surface side. In the lamp cover of the lamp, the upper region of the lamp cover is formed with a diffusion step toward the front to form the first light distribution required for the vehicle lamp, and the lower region of the lamp cover is formed. A cylindrical step is configured to form a second light distribution with a striped pattern in which bright and dark areas are alternately continuous toward the lower part of the vicinity.

According to this aspect, the first light distribution and the second light distribution can be formed from the light source in the lamp chamber with one lamp cover.

As is clear from the above description, it is possible to provide a vehicle lamp that makes others recognize the own vehicle.

It is a perspective view of the vehicle which mounts the lamp for vehicle which concerns on the preferred embodiment of this disclosure composition. The usage state of the lamp for the vehicle is shown, and is (A) a plan view and (B) a front view. It is a perspective view of the lamp for the vehicle. It is a front view of the lamp for the vehicle. It is a side view of the lamp for the vehicle. It is a vertical end view of the lamp for the vehicle. It is an end view along the VI-VI line of FIG. It is an exploded perspective view of the lamp for the vehicle. The lamp cover of the lamp for the vehicle is shown. FIG. 8A mainly shows the outer surface side which is the exit surface, and FIG. 8B mainly shows the inner surface side which is the incident surface. It is sectional drawing of the lamp cover of the lamp for the vehicle. It is a horizontal sectional view along the IX-IX line of FIG. The cross section of the curved surface of a lamp cover is mainly shown. It is sectional drawing of the lamp cover of the lamp for the vehicle. It is a vertical sectional view along the X-X line of FIG. The cross section of the bottom surface of the lamp cover is mainly shown. It is a light distribution diagram of the second light distribution of the lamp for the vehicle. The lamp light distribution projected on the road surface from the vehicle lighting equipment is shown. This is a modified example.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The embodiments are not limited to the invention, but are exemplary, and all the features and combinations thereof described in the embodiments are not necessarily essential to the invention.

(First Embodiment)
FIG. 1 shows a vehicle C equipped with a vehicle lamp 1 according to the configuration of the present disclosure. FIG. 2 is a plan view and a front view of the vehicle C when the lamp for the vehicle 1 is used.

As shown in FIG. 1, the vehicle lighting fixtures 1 are side turn signal lamps provided in pairs on the left and right side surfaces of a large vehicle C and function as indicator lamps when the traveling direction of the vehicle C is changed. Especially attached to large vehicles, it lights up in synchronization with the front turn signal lamp and back turn signal lamp.

As shown in FIG. 2, for example, when the vehicle C moves to the left, the vehicle lighting tool 1 provided on the left side surface of the vehicle C is the light distribution of the turn signal lamp toward the left side of the vehicle C. Amber-colored diffused light is formed as the first light distribution LD1 and blinks to cause the vehicle C to move to the left. Notify the vehicle, following vehicles, etc. At the same time, the vehicle lighting tool 1 forms a second light distribution LD2 having a striped pattern in which bright and dark portions are alternately continuous on the road surface GR on the left side of the vehicle C. The second light distribution LD2 is formed of the same amber color light as the first light distribution LD1, and is turned on and off at a predetermined cycle. The timing of turning off the light is the same as the timing of turning off the blinking first light distribution LD1. With the two light distributions of the first light distribution LD1 and the second light distribution LD2, it is possible to make the surrounding pedestrians and other vehicle drivers more aware of the vehicle C and call attention to them.

The blinking second light distribution LD2 irradiates the lower side of the vehicle C in the direction in which the vehicle is scheduled to move, that is, the road surface GR between the vehicle C and the sidewalk, or the road surface GR between the vehicle C and the adjacent lane. Will be done. While the second light distribution LD2 with a striped pattern extending so as to block the running is blinking on the running path of the following vehicle (mainly a two-wheeled vehicle) trying to pass between the vehicle C and the sidewalk or between the vehicle C and the adjacent lane. It will be irradiated, and the driver of the following vehicle can be made to more aware of the change of course of the vehicle C. In particular, it is possible to suppress a entanglement accident in which a two-wheeled vehicle or a pedestrian goes straight ahead without noticing the vehicle C turning left at an intersection and comes into contact with the vehicle C.

As described above, the vehicle lighting tool 1 irradiates not only the first light distribution LD1 as a conventional indicator light but also the second light distribution LD2 to further inform the vehicle traveling direction of the own vehicle and enhance the functional effect. ing.

In the present embodiment, the first light distribution LD1 and the second light distribution LD2 synchronize the timing of turning on and off, but each light source is separately provided to form a light distribution, and each light source is turned on independently. The second light distribution LD2 may be irradiated independently of the first light distribution LD1. For example, the light distribution of the headlight may be formed as the first light distribution, and the second light distribution may be turned on as a signal at the time of starting. In particular, when crossing the sidewalk from the gate of the house and going out to the roadway, it is possible to notify the pedestrians passing in front of the gate of the start of the own vehicle and call attention to it.

The configuration of the present disclosure is not limited to turn signal lamps, but headlights include high beam lamps, low beam lamps, fog lamps, and indicator lamps include tail lamps, stop lamps, daylight running lamps, clearance lamps, side turn signal lamps, and automatic lamps. It can also be used for operation indicator lamps and the like.

Further, headlights such as high beam lamps and low beam lamps are defined to have a light distribution at a predetermined distance, while indicator lamps are defined to have a range within which the maximum luminous intensity and the left-right irradiation angle can be reached. Regardless of whether it is a headlight or an indicator lamp, the form of light irradiated so as to satisfy the regulation defined for each vehicle lamp is referred to as a first light distribution.

(Structure of vehicle lamp 1)
Next, the configuration of the vehicle lamp 1 will be described. 3 to 7 show a vehicle lamp 1. 3 is a perspective view, FIG. 4 is a front view, FIG. 5 is a side view, FIG. 6 is an end view taken along the VI-VI line of FIG. 4, and FIG. 7 is an exploded perspective view. In FIGS. 3 to 5, the lamp cover is shown by a dotted line to show the internal configuration.

As shown in FIGS. 3 to 7, the vehicle lamp 1 includes a lamp body 10 having a flat front surface and a lamp cover 40 made of a translucent resin, glass, or the like. The lamp cover 40 is a housing having an opening on one side, and the flat plate-shaped front surface of the lamp body 10 engages with the opening to form a lamp chamber S. Since the light-transmitting lamp cover 40 is the main body of the housing, the light diffusion angle of the vehicle lighting tool 1 can be increased, and the visible range of the irradiation light can be widened.

A support member 30 and light sources 20a, 20b, 20c, and 20d mounted on a substrate are mainly arranged in the light chamber S. Hereinafter, the light sources 20a to 20d are collectively referred to as a light source 20 unless they are individually specified.

As the light source 20, a semiconductor light emitting element such as an LED (Light Emitting Diode), LD (Laser Diode), EL (Electro Luminescence) element, a light bulb, an incandescent lamp (halogen lamp), a discharge lamp (discharge lamp), or the like is used. Can be done. In this embodiment, an LED that emits amber-colored light is used as a light emitting element.

The support member 30 is formed by bending a single metal flat plate, and has a centrally located front surface 30c, a left side surface 30d, a right side surface 30b, and a front surface that open 180 degrees or more from the front surface 30c to both sides and are continuous. It has a lower surface 30a that bends downward from the bottom at a predetermined angle.

A light source 20 is attached to the support member 30 and is fixed to the lamp body 10. More specifically, the light source 20a is arranged on the lower surface 30a of the support member 30, the light source 20b is arranged on the right side surface 30b, the light source 20c is arranged on the front surface 30c, and the light source 20d is arranged on the left side surface 30d so that the light emitting surface faces the lamp cover 40. To.

The lamp cover 40 incidents the light of the light source 20 arranged in the lamp chamber S and emits it as a predetermined light distribution.

(Lamp cover)
The structure of the lamp cover 40 will be described in detail. 8A and 8B show a lamp cover 40, where FIG. 8A is a perspective view of the lamp cover 40 viewed from the outer surface side which is an exit surface, and FIG. 8B is a perspective view of the lamp cover viewed from the inner surface side which is an incident surface. FIG. 9 is a cross-sectional view taken along the line IX-IX of FIG. It mainly shows the horizontal cross section of the curved surface of the lamp cover 40. FIG. 10 is a cross-sectional view taken along the line XX of FIG. The vertical cross section of the bottom surface of the lamp cover 40 is mainly shown.

As shown in FIG. 8, the lamp cover 40 is an optical member formed in a box shape with an inner surface side as an entrance surface and an outer surface side as an emission surface. The light emitted from the light source 20 arranged in the lamp chamber S is incident from the incident surface on the inner surface side, and the light based on the characteristics of each surface is emitted from the emitted surface on the outer surface side.

The lamp cover 40 includes a ceiling surface 42, a bottom surface 41, and a curved surface 43 projecting forward. In the curved surface 43, the ceiling surface 42, and the bottom surface 41, the outer surface side is all formed into a smooth curved surface / plane, and the inner surface side is provided with a step for forming a desired light distribution.

As shown in FIGS. 8B and 9, the inner surface side of the curved surface 43 is a central region 43a constituting a central region, a left region 43b which is a left and right region sandwiching the central region, and a right region 43c. Consists of.

The central region 43a is a so-called fish-eye step 48 in which small concave surfaces are arranged in a matrix. The light incident on the central region 43a configured in this way is emitted from the exit surface while being diffused in all directions.

In the left region 43b and the right region 43c, a triangular step 47 for diffusing light mainly in the left-right direction is provided. In addition, the fish-eye step 48 and the triangular step 47 can be any diffusion step such as a cylindrical step, a stippling, and a grain.

Light emitted mainly from the light sources 20b, 20c, 20d is incident from the inner surface (central region 43a, left region 43b, right region 43c) of the curved surface 43, and is diffused by the fisheye step 48 and the triangular step 47 to be emitted. Irradiates from and forms the first light distribution LD1. As shown in FIG. 6, the optical axis L1 of the light source 20c is in the horizontal direction of the front surface, and similarly, the optical axes of the light sources 20b and 20d (not shown in FIG. 6) are horizontal in front of the mounting surface. There is. The irradiation light of the light sources 20b, 20c, and 20d is mainly diffused to the left and right toward the front by the curved surface 43 and emitted.

As shown in FIGS. 8B and 10, a cylindrical step 49 is formed on the inner surface 41a of the bottom surface 41 of the lamp cover 40. The cylindrical step is a kind of step, and has a form in which a semi-cylindrical convex curved surface is continuously arranged. The cylindrical step 49 of the present embodiment is an extruded shape in which a plurality of continuously arranged convex curves are extruded forward, and the convex curved surfaces arranged in parallel in the left-right direction are continuous.

The inner surface 41a of the bottom surface 41 has a symmetrical shape, and the convex curved surfaces A1, A2, A3 ... An running in parallel toward the front are continuously formed laterally with the convex curved surface A1 in the center as a reference. ..

The widths H1, H2, ... Hn of the convex curved surfaces A1, A2, A3 ... An are all configured to be the same, but the radius of curvature of the convex curved surfaces A1, A2, A3 ... An is lateral from the central convex curved surface A1. It has a structure that becomes large enough.

Light emitted mainly from the light source 20a is incident on the bottom surface 41 having such an inner surface 41a, and is irradiated from the emitting surface as a predetermined light distribution. As shown in FIG. 6, the light source 20a is attached to the lower surface 30a inclined at a predetermined angle downward from the horizontal plane, and the optical axis L2 of the light source 20a is below the horizontal. The emitted light of the light source 20a is incident on the bottom surface 41 and is irradiated downward in the vicinity of the vehicle lamp 1 to form the second light distribution LD2.

FIG. 11 shows a light distribution formed on a road surface in the vicinity of the vehicle lamp 1. Convex curved surfaces A1, A2, A3 ... An extending forward with a constant width each condense and irradiate light in a line shape, thereby forming a bright portion extending forward in a line shape. Since there is a relatively dark dark part between the bright parts, a striped light distribution in which the bright parts and the dark parts are alternately continuous is formed as a whole.

Further, in the convex curved surfaces A1, A2, A3 ... An, the convex curved surface arranged in the center has a smaller radius of curvature, and the radius of curvature increases toward the side. Since the light source 20a is arranged in the center of the lamp cover 40 in the width direction, in other words, the convex curved surface arranged closer to the light source 20a is configured to have a smaller radius of curvature. With this configuration, the brightness of the bright portion of the second light distribution LD2 can be made substantially uniform at least in the vicinity of the center in the width direction of the vehicle lamp 1. Further, the widths of the convex curved surfaces A1, A2, A3 ... An are constant, and all the widths are the same. From this form and the setting of the radius of curvature, the widths of the bright part and the dark part are configured to be substantially equal, and it is possible to make others recognize that the second light distribution LD2 is an artificial light distribution and call attention to it. can.

In particular, the vehicle lamps 1 attached to both sides of the vehicle C form a second light distribution LD2 in which the bright portion extends laterally from the vehicle C, so that the bright portion is orthogonal to the traveling direction of the vehicle C. It grows in the direction you did. Since the bright part is irradiated so as to block other vehicles trying to overtake the vehicle C, it is possible to call more attention and it is effective.

The second light distribution LD2 mainly uses the irradiation light of the light source 20a to form the light distribution. By using a single light source, a bright part and a dark part can be clearly formed, and the second light distribution LD2, which is a complicated light distribution, can be made clearer.

In the present embodiment, the second light distribution LD2 is formed on the bottom surface 41 of the lamp cover 40, but the second light distribution LD2 is not limited to this, but the first light distribution is formed in the upper region of the lamp cover having a desired shape and in the lower region. The second light distribution LD2 can be formed.

(Modification example)
The configurations of the present disclosure are suitable not only for turn signal lamps, but also for other headlights and indicator lamps. As an example, FIG. 12 shows a vehicle lamp 1'which is a modified example.

The vehicle lamp 1'is a back lamp, and is arranged in pairs on the left and right in the lower region of the back surface of the vehicle. The vehicle lamp 1'has the same configuration as the vehicle lamp 1 except that the light to be irradiated is white light.

When the vehicle C'to which the vehicle is mounted moves to the rear, the vehicle lighting tool 1'illuminates the rear of the vehicle C'while blinking the first light distribution LD1'of white light, and the vehicle C. The second light distribution LD2'of white light is flashed and irradiated from directly below the rear of'. Specifically, the vicinity of the vehicle is about 0 m to 5 mm, preferably about 0 mm to 3 m from the vehicle. By forming the second light distribution LD2'together with the first light distribution LD1', the traveling direction of the vehicle C'is directed to pedestrians and other vehicle drivers existing behind the vehicle C', which is a blind spot for the driver. Can be recognized and attention can be drawn.

Although the preferred embodiments of the present invention have been described above, the above-described embodiments are examples of the present invention, and these can be combined based on the knowledge of those skilled in the art, and such embodiments are also within the scope of the present invention. include.

1: Vehicle lighting equipment 10: Lamp body 20: Light source 40: Lamp cover 41: Bottom surface 43: Curved surface 47: Triangular step 48: Fish-eye step 49: Cylindrical step C: Vehicle GR: Road surface LD1: First light distribution LD2: 2nd light distribution S: Light room

Claims (7)

Toward the front, while forming the first light distribution required for lighting equipment,
Toward the lower part of the vicinity, the bright part and the dark part form a second light distribution with a continuous striped pattern.
A lamp for vehicles that is characterized by that. A light source is placed in the lamp room, which is defined by the lamp body and the lamp cover.
In the upper region of the lamp cover, a diffusion step is formed in which the emitted light of the light source is diffused to form a first light distribution.
In the lower region of the lamp cover, a cylindrical step is formed to form a second light distribution in a striped pattern in which bright and dark areas are alternately continuous from the emitted light of the light source.
A lamp for vehicles that is characterized by that. The lower region of the lamp cover forming the second light distribution is the bottom surface of the lamp cover.
The vehicle lamp according to claim 2. In the cylindrical step, the incident surface is a shape in which a plurality of convex curved surfaces having a convex curve extrusion shape are continuously provided in a direction orthogonal to the extrusion direction.
The vehicle lamp according to claim 2 or 3, characterized in that. The radius of curvature of the convex curved surface is configured to be smaller as it is closer to the light source, and the brightness of the bright portion of the striped pattern is configured to be substantially even at least in the vicinity of the center of the second light distribution.
The vehicle lamp according to claim 4. In the second light distribution, the widths of the bright part and the dark part of the striped pattern are configured to be substantially uniform.
The vehicle lamp according to claim 4 or claim 5. A lamp cover for a vehicle lamp, in which a predetermined step is formed on the inner surface, light is incident from the inner surface side, formed into a predetermined light distribution, and emitted toward the outer surface side.
In the upper region of the lamp cover, a diffusion step is formed toward the front to form the first light distribution required for the vehicle lamp.
In the lower region of the lamp cover, a cylindrical step is formed in which a second light distribution having a striped pattern in which bright parts and dark parts are alternately continuous is formed toward the lower side of the vicinity.
A lamp cover for vehicle lighting that is characterized by this.

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