JP6548911B2 - Headlights for railway vehicles - Google Patents

Description

  The present invention relates to a headlamp for a vehicle, for example, used for a lamp for a railway vehicle.

  2. Description of the Related Art Conventionally, as a lamp provided in a railway vehicle, a projector type lamp provided with a discharge valve such as a metal halide valve as a light source has been adopted. This railway vehicle lamp is configured to reflect the light of the discharge light emitting portion of the discharge bulb by a reflector, collect the light by a condenser lens, and irradiate the light forward or backward of the vehicle (see, for example, Patent Document 1).

  On the other hand, in recent years, it has been proposed to use a light emitting diode (LED: Light Emitting Diode), which is a light emitting element with low power consumption and long life, as a new light source to replace the discharge bulb in a lamp for railway vehicles. For example, Patent Document 2 discloses a railway having a first light emitting diode emitting red light, a second light emitting diode emitting white light, and a housing forming a lamp chamber in which the first and second light emitting diodes are disposed. A vehicle lamp is disclosed.

Japanese Patent Application Publication No. 2001-23417 JP, 2014-19394, A

  By the way, in recent years, for the purpose of reduction of air resistance, improvement of design and the like, the leading vehicles of the Shinkansen and the limited express train having a streamlined shape are widely adopted. For this reason, the design freedom of the lamp which comprises the headlight as a headlamp is being restrict | limited.

  For example, the lamp described in Patent Document 1 needs a large dimension in the depth direction, so the entire lamp can not be configured compactly. On the other hand, in the case of the lamp described in Patent Document 2, when installed in a leading vehicle of streamline, an irradiation range aimed at white light of a light amount necessary as a headlight without losing the streamline shape of the vehicle It is not easy to properly emit illumination light.

  Furthermore, for example, at a railway station or the like, it is common to notify the passing train's entry to a customer who is waiting at home by a public announcement or a bulletin board. However, notification on the premises alone is not necessarily sufficient to notify all the customers of the entry of the passing train, and for the customers who are not aware of the notification, the vehicle will not It is possible to misidentify that it stops.

  In view of the circumstances as described above, the object of the present invention is to make it possible to emit illumination light at a target illumination intensity and irradiation range without losing the streamline shape of the vehicle while making the device configuration compact, and further to front the vehicle It is an object of the present invention to provide a vehicle headlamp capable of presenting necessary information.

In order to achieve the above object, a vehicle headlamp according to an aspect of the present invention includes a main light source unit, an auxiliary light source unit, and a support.
The main light source unit has a plurality of first semiconductor light emitting elements arranged in a uniaxial direction and lighted simultaneously.
The auxiliary light source unit includes a plurality of second semiconductor light emitting elements which are arranged in a first axial direction and can be lighted simultaneously or sequentially in the first axial direction.
The support has a first accommodating portion for accommodating the main light source unit, and a second accommodating portion for accommodating the auxiliary light source unit.

In the above-described vehicle headlamp, the main light source unit has the plurality of first semiconductor light emitting elements arranged in multiples in one axial direction, so the illumination light of the necessary illuminance toward the front of the vehicle is in the necessary range It can emit properly.
Moreover, since the said headlamp for vehicles is equipped with the auxiliary light source unit, significant information can be shown ahead of a vehicle by the lighting form of a 2nd semiconductor light-emitting device. For example, by sequentially turning on the plurality of second semiconductor light emitting devices in the first axial direction, it is possible to present some information such as approach and passage of the vehicle to the front.
Furthermore, since the above-described vehicle headlamp includes the support that accommodates the main light source unit and the auxiliary light source unit, the entire headlamp can be made compact.

The plurality of first semiconductor light emitting devices may be arranged in a second axial direction that obliquely intersects the first axial direction.
The second axial direction is typically a longitudinal direction or a transverse direction orthogonal to the front of the vehicle. Thereby, the illumination light of the required illuminance can be properly emitted within the predetermined range without damaging the streamline shape of the vehicle.

The main light source unit may include a plurality of main light source units arranged in a third axial direction orthogonal to the first axial direction and / or the first axial direction.
As a result, it is possible to easily realize the illuminance, the irradiation range, the optical axis, and the like required for the headlamp.

The plurality of second semiconductor light emitting devices are typically configured to be capable of emitting white light or red light, but is not limited thereto, and emits light of other colors such as yellow and blue. It may be possible to do.
For example, when the vehicle headlamp is used as a lamp attached to the front of a railway vehicle, the plurality of second semiconductor light emitting devices are configured to emit white light. Further, when the vehicle headlamp is used as a lamp attached to the rear of a railway vehicle, the plurality of second semiconductor light emitting elements are configured to emit red light.
In addition, the said vehicle headlamp is not restricted to a rail vehicle, It is applicable also to the headlamp of general vehicles, such as a passenger car, a commercial vehicle , and a two-wheeled vehicle.

  As described above, according to the present invention, it is possible to emit illumination light at a target illuminance and irradiation range without losing the streamline shape of the vehicle while making the device configuration compact, and it is further necessary to forward the vehicle It is possible to present information.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the whole vehicle headlamp which concerns on one Embodiment of this invention. It is a schematic perspective view which shows the rail vehicle provided with the said headlamp. It is a top view of the said headlamp. It is a front view of the said headlamp. It is a right side view of the above-mentioned headlamp. FIG. 5 is a schematic enlarged cross-sectional view taken along line AA in FIG. It is a schematic perspective view of the principal part which shows the structure of the main light source unit in the said headlamp. It is a front view which shows an example of the lighting mode of the auxiliary light source unit in the said headlamp.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, a headlamp for a railway vehicle will be described as an example.

FIG. 1 is a perspective view showing the whole of a vehicle headlamp (hereinafter simply referred to as a headlamp) according to an embodiment of the present invention. FIG. 2 is a schematic perspective view showing a state in which the headlamp according to the present embodiment is attached to a railway vehicle.
In the figure, the X-axis, Y-axis, and Z-axis indicate three axis directions orthogonal to each other, and the X-axis and Y-axis are horizontal (in particular, the Y-axis direction is the traveling direction of the vehicle), and the Z-axis is high. Each corresponds to the longitudinal direction (the same applies to the following figures).

  The headlamp 1 of the present embodiment is used as a lamp for a railway vehicle, and is configured as a front marker lamp or a rear marker lamp attached respectively to the left and right sides of the leading vehicle or the last vehicle. As shown in FIG. 2, the vehicle T has a streamlined shape, and the headlamps 1 are attached to both front sides thereof. The left and right headlamps 1 have the same configuration, and their shapes are configured symmetrically on the left and right. Here, the left headlamp is described.

  3 is a plan view of the headlamp 1, FIG. 4 is a front view thereof, FIG. 5 is a right side view thereof, and FIG. 6 is a schematic enlarged sectional view taken along line AA in FIG.

  The headlamp 1 according to the present embodiment includes a main light source unit 10, an auxiliary light source unit 20, a support 30, a cover 40, and a housing 50. The headlamp 1 has a tapered shape toward the front, and its front (front) side is streamlined.

  The main light source unit 10 is composed of a plurality (five in this example) of main light source units 10A1, 10A2, 10B1, 10B2 and 10B3 (hereinafter, the main light source units 10A1, 10A2, 10B1 except in the case described separately) , 10B2 and 10B3 are collectively referred to as the main light source unit 10).

  The plurality of main light source units 10 each have an optical axis oriented in the same direction, and typically, each optical axis is set parallel or substantially parallel to the Y-axis direction. In the present embodiment, a total of five main light source units 10 of two on the upper side and three on the lower side are used. The number of main light source units 10 is not limited to this, and the number of main light source units 10 may be one.

  The two main light source units 10A1 and 10A2 disposed on the upper side are used, for example, as a light source for low beam, and are arranged in the a-axis direction that obliquely intersects the X-axis direction. The a-axis direction corresponds to an axial direction in which the X-axis is rotated counterclockwise by an angle θ as viewed from above as shown in FIGS. 1 and 3. As shown in FIG. 1 and FIG. 3, the main light source unit 10A1 located inside is arranged so as to project by a predetermined length forward than the main light source unit 10A2 located outside.

  On the other hand, the three main light source units 10B1, 10B2 and 10B3 disposed on the lower side are used, for example, as light sources for high beams, and are arranged in the a-axis direction similarly to the main light source units 10A1 and 10A2. As shown in FIG. 1 and FIG. 3, the main light source unit 10B2 located on the center side is disposed so as to protrude by a predetermined length forward than the main light source unit 10B3 located outside. On the other hand, the main light source unit 10B1 located inside is disposed so as to protrude by a predetermined length to the front side than the main light source unit 10B2 located at the center side.

  In addition, the main light source unit for low beam and high beam is not limited to the above-mentioned example, and it is possible to set suitably. For example, two main light source units 10A1 and 10A2 arranged in the upper stage may be set for high beam, and three main light source units 10B1 to 10B3 arranged in the lower stage may be set for low beam.

  By arranging the main light source units 10A1 and 10A2 and 10B1 to 10B3 in the a-axis direction, the headlamp 1 can be mounted on the vehicle T without excessively projecting the headlamp 1 from the side of the streamlined vehicle T. Since it becomes possible to attach, it can prevent that the streamline shape of vehicles T is spoiled. Therefore, the a-axis direction can be appropriately set according to the shape of the side portion of the vehicle T to which the headlamp 1 is attached, the angle with respect to the traveling direction, and the like.

  Also, as shown in FIGS. 5 and 6, in the main light source units 10 arranged vertically in multiple stages, the main light source units 10B1, 10B2 and 10B3 located in the lower stage are more than the main light source units 10A1 and 10A2 located in the upper stage Also, it is disposed to project a predetermined length to the front side. As a result, since the entire configuration of the headlamp 1 becomes streamlined, the headlamp 1 can be attached to the vehicle T without damaging the streamline shape of the vehicle T.

  Furthermore, in the present embodiment, the main light source unit 10 is configured by a plurality of main light source units 10A1, 10A2, 10B1 to 10B3 arranged in two axial directions (a-axis direction and Z-axis direction) orthogonal to each other. Therefore, it is possible to easily realize the illuminance, the irradiation range, the optical axis and the like required for the headlamp.

  FIG. 7 is a schematic perspective view of the main part showing the configuration of the main light source unit 10.

  Each of the main light source units 10 has the same configuration, and as shown in FIG. 7, a substantially flat synthetic resin cylinder 11 and a front end portion of the cylinder 11 as if the cylinder were crushed in the Z-axis direction. And a plurality of lens portions 120 arranged at equal intervals in the X-axis direction. A plurality of first semiconductor light emitting elements L1 and a first circuit board S1 supporting them are respectively built in the inside of the cylindrical body 11 (see FIG. 6).

  Each of the plurality of first semiconductor light emitting devices L1 is formed of an LED capable of emitting white light. The LED may be a semiconductor chip, or may be a (for example, shell type) package part provided with a lens at the exit. The number of the plurality of first semiconductor light emitting devices L1 is not particularly limited, and in the present embodiment, four semiconductor light emitting devices are used.

  The plurality of first semiconductor light emitting elements L1 intersect the a-axis direction (first axial direction) diagonally in the a-axis direction (second axial direction) so as to face the plurality of lens portions 120 of the transmission portion 12 Are equally spaced. The plurality of first semiconductor light emitting devices L1 are configured to be lighted simultaneously, and the emitted light is projected forward through the lens unit 120.

  As shown in FIG. 6, the first circuit board S1 is installed on the front side of the cylindrical body 11 with the mounting surface facing forward (in the Y-axis direction). The first circuit board S1 is electrically connected to a power supply unit (not shown) and supplies power to the plurality of first semiconductor light emitting elements L1 mounted on the mounting surface thereof.

  On the other hand, the auxiliary light source unit 20 is disposed below the main light source unit 10. The front shape of the auxiliary light source unit 20 has a streamlined shape formed along the lower edge of the headlamp 1 as shown in FIGS. 1 and 4. As shown in FIG. 6, the auxiliary light source unit 20 has a cylindrical body 21 made of synthetic resin, and a light transmitting portion 22 covering the front end of the cylindrical body 21. A plurality of second semiconductor light emitting elements L2 and a second circuit board S2 supporting them are respectively built in the inside of the cylindrical body 21 (see FIG. 6).

  The mounting surface of the second circuit board S2 is disposed upward at a predetermined angle with respect to the Y-axis direction. The inner surface of the cylindrical body 21 functions as a reflecting surface, and guides the light emitted from the second semiconductor light emitting element L2 to the light transmitting portion 22 while reflecting it. The light transmitting portion 22 faces the inner surface of the cover 40 and is obliquely disposed so as to correspond to the streamline shape of the cover 40. The light transmitting unit 22 may have a light diffusing function.

  The plurality of second semiconductor light emitting devices L2 are formed of LEDs capable of emitting white light or red light, respectively. The LED may be a semiconductor chip as in the first semiconductor light emitting element L1, or may be a (for example, shell type) package component in which a lens is provided at an emission port. The plurality of second semiconductor light emitting elements L2 are arranged at intervals in the a-axis direction from one side end of the cylindrical body 21 to the other side end. The plurality of second semiconductor light emitting devices L2 are configured to be able to light up simultaneously or sequentially in the a-axis direction.

For example, when the headlamp 1 functions as a headlight (front marker lamp), the auxiliary light source unit 20 may sequentially turn on the plurality of second semiconductor light emitting elements L2 in the a-axis direction with white light. Configured to be possible.
On the other hand, when the headlamp 1 functions as a tail lamp (rear marker lamp), the auxiliary light source unit 20 is configured to simultaneously turn on the plurality of second semiconductor light emitting elements L2 with red light.

  8A to 8E are front views showing an example of the lighting mode of the auxiliary light source unit 20 when the headlamp 1 functions as a headlight.

  For example, the auxiliary light source unit 20 sequentially turns on the auxiliary light LS from the left end to the right end in the order from the no light state shown in FIG. 8A to the order shown in FIGS. 8B, C, D and E. FIG. 8E shows a state in which all of the plurality of semiconductor light emitting elements L2 of the auxiliary light source unit 20 are turned on, and after a predetermined time has elapsed, the light returns to the no light state shown in FIG. Is repeated. The auxiliary light source unit 20 may cause the plurality of second semiconductor light emitting elements L2 to emit light so that the auxiliary light LS continuously transitions in the state shown in FIGS. 8A to 8E, or maintaining each state for a predetermined time The plurality of second semiconductor light emitting devices L2 may emit light so as to make a stepwise transition. As such, the auxiliary light source unit 20 is configured as a display light that presents predetermined information to the front of the vehicle, rather than the light source for illumination.

  For example, at a railway station or the like, it is common to notify the passing customer of the entry of passing vehicles to a customer who is waiting at home by a public announcement or a bulletin board. However, notification on the premises alone is not necessarily sufficient to notify all customers of the entry of the passing vehicle, and for a customer who is not aware of the notification, the vehicle may see when the vehicle has entered. It is possible to misidentify that it stops.

  According to the present embodiment, by displaying information indicating that the vehicle is a passing vehicle on the auxiliary light source unit 20 provided in the headlamp 1 of the vehicle, the user who is standing by at the home is alerted Can. As a result, it is possible to notify the customer who has seen the entering vehicle that the vehicle is a passing vehicle.

  As the information indicating that the vehicle is a passing vehicle, for example, as shown in FIGS. 8A to 8E, one in which the lighting state of the auxiliary light LS is changed continuously or intermittently is employed. In addition to the above-described example in which the length of the lighting area of the auxiliary light LS changes with time, the irradiation area and color of the auxiliary light LS are changed, and all the semiconductor light emitting elements L2 in the auxiliary light source unit 20 are changed. You may make it blink.

  The support 30 is made of, for example, a synthetic resin material, and is housed inside the housing 50. The support 30 has a first accommodation portion 31 for accommodating the light source unit 10 and a second accommodation portion 32 for accommodating the auxiliary light source unit 20.

  The first housing portion 31 includes a plurality of first housing portions 31A1, 31A2, 31B1, 31B2 and 31B3 formed to correspond to the respective main light source units 10 (except in the case where they will be individually described hereinafter) The first accommodation portions 31A1, 31A2, 31B1, 31B2 and 31B3 are collectively referred to as a first accommodation portion 31).

  The first accommodating portion 31 is configured to be able to position and fix each main light source unit 10. Each of the main light source units 10 is fixed at a position as shown in FIG. 6 by being inserted, for example, from the rear side to the front side of the support 30. In this case, as schematically shown in FIG. 6, the rear end portion of the support member 30 may be provided with an engaging portion 33 that engages with the rear end portion of the main light source unit 10.

Each first housing portion 31 is further provided with a reflective surface 34 for diffusely reflecting the illumination light emitted from each main light source unit 10. As shown in FIGS. 1 and 3, the reflecting surface 34 is constituted by an embossed surface which is partially formed on the bottom surface portion adjacent to the front end portion of each main light source unit 10.
The reflective surface 34 may be formed of a coating film such as white, or may be a metal film, a vapor deposition film, or the like. The reflective surface 34 is formed in a triangular shape having an oblique side parallel to the front edge portion of the main light source unit 10, but the shape is not limited to this and may be formed in the entire area of the bottom portion.

  The second accommodation portion 32 is formed along the lower edge of the support 30 and accommodates the auxiliary light source unit 20 therein. The second housing portion 32 has an opening for exposing the light transmitting portion 22 of the auxiliary light source unit 20 to the outside, and the cylindrical body 21 is fixed to the inner peripheral edge portion of the opening.

  The cover 40 is made of an injection-molded body of transparent plastic material, and is fixed to the housing 50 so as to cover the front surface of the support 30. The cover 40 has a streamline shape as a whole, and is configured to form a substantially continuous surface with the side surface of the vehicle T. The cover 40 is typically fixed to the support 30 or the housing 50 via a seal ring (not shown).

  The housing 50 is made of metal or synthetic resin, and has a space for housing the support 30. The housing 50 is provided with a cable or a terminal portion for supplying power to the main light source unit 10 and the auxiliary light source unit 20 from the outside of the headlamp 1. The housing 50 further accommodates a mechanism for adjusting the optical axes of the main light source units 20 and the auxiliary light source unit 20.

  In the headlamp 1 of the present embodiment configured as described above, the main light source unit 10 includes the plurality of first semiconductor light emitting elements L1 arranged in multiples in one axial direction (X axis direction), so that the vehicle The illumination light of the required illuminance can be properly emitted to the required range toward the front of T.

  Moreover, since the headlamp 1 of this embodiment is equipped with the auxiliary light source unit 20, significant information can be presented to the front of the vehicle T by the lighting mode of the second semiconductor light emitting element L2. For example, by sequentially turning on the plurality of second semiconductor light emitting devices L2 in the a-axis direction, information such as approach and passage of the vehicle can be presented to the front.

  Furthermore, since the headlamp 1 of the present embodiment includes the support 30 that accommodates the main light source unit 10 and the auxiliary light source unit 20, the entire headlamp can be configured to be compact.

  As mentioned above, although embodiment of this invention was described, this invention is not limited only to the above-mentioned embodiment, of course, a various change can be added.

  For example, in the above embodiment, although the example in which the plurality of first semiconductor light emitting devices L1 in the main light source unit 10 are arranged in the X axis direction has been described, the present invention is not limited thereto. For example, they may be arranged in the Z-axis direction. Further, the plurality of main light source units 10 are not limited to the examples arranged in the a-axis direction and the Z-axis direction, respectively, and may be arranged in at least one axial direction.

  Furthermore, in the above embodiment, although the headlamp for rail vehicles was mentioned as an example and explained as a headlamp for vehicles, it is not restricted to this, but it is applicable also to the headlamp of general vehicles, such as a passenger car, a commerce person, and a two-wheeled vehicle It is. In this case, the auxiliary light source unit can function as, for example, a direction indicator or the like.

DESCRIPTION OF SYMBOLS 1 ... Head lamp 10, 10A1, 10A2, 10B1, 10B2, 10B3 ... Main light source unit 20 ... Auxiliary light source unit 30 ... Support body 31, 31A1, 31A2, 31B1, 31B2, 31B3 ... 1st accommodating part 32 ... 2nd Housing 40: Cover 50: Casing L1: First semiconductor light emitting element L2: Second semiconductor light emitting element

Claims (5)

First axis and a plurality of lens units that is arranged with a plurality of first semiconductor light emitting element to the width direction are arranged in the width direction of the railway vehicle are turned simultaneously possess respectively, intersect obliquely in the width direction A plurality of main light source units disposed along the direction ;
An auxiliary light source unit having a first axially aligned simultaneously or the first plurality to successively light up in the axial direction the second semiconductor light emitting element,
A headlamp for a railway vehicle, comprising: a support having a first accommodating portion for accommodating the main light source unit; and a second accommodating portion for accommodating the auxiliary light source unit. A headlamp for a railway vehicle according to claim 1, wherein
The support includes a first accommodating portion for positioning the plurality of main light source units, and a second accommodating portion for accommodating the auxiliary light source unit.
The first housing portion has a reflection surface that diffuses and reflects illumination light emitted from the plurality of main light source units.
Headlights for railway vehicles. It is a headlamp for a railway vehicle according to claim 1 or 2,
Each of said plurality of main light source unit, Ru are arranged in a direction perpendicular to the width direction and the first axial
Headlights for railway vehicles. It is a headlamp for rail vehicles according to any one of claims 1 to 3,
The plurality of second semiconductor light emitting devices are configured to be capable of emitting white light or red light
Headlights for railway vehicles. A headlamp for a railway vehicle according to claim 4, wherein
The railway vehicle headlamp is a lamp attached to the front and / or the rear of the railway vehicle.
Headlights for railway vehicles.

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