WO2020039890A1 - Light source unit and lamp - Google Patents

Abstract

Irradiation modes for light are diversified. The present invention comprises: a rotatable placement base (13) with a prescribed rotation axis (P) as a fulcrum; and a plurality of light sources (14) placed on the placement base, wherein at least two light sources among the plurality of light sources are placed at different distances from the rotation center in the radial direction of the placement base, and light on/off control is made possible individually for the plurality of light sources. By doing this, the at least two light sources placed on the placement base are placed at positions at different distances from the rotation center in the radial direction of the placement base, and light on/off control is made possible individually for the plurality of light sources placed on the placement base, so it is possible to diversify the irradiation modes of the light.

Description

Light source unit and lamp

The present invention relates to a technical field of a light source unit in which a plurality of light sources are arranged on a rotatable arrangement base and a lamp including the same.

2. Description of the Related Art Some lamps, such as vehicle lamps, include a light source unit arranged on a base located at a central portion of a fan and configured to rotate together with the fan (for example, see Patent Document 1). .

In the vehicle lamp described in Patent Literature 1, the light source is turned on when the fan rotates, and a predetermined light distribution pattern is formed by light emitted from the light source. At this time, heat generated due to the lighting of the light source is released through the base functioning as a heat sink to perform cooling, and the light source is also cooled by airflow generated by rotation of the fan.

JP 2018-63891 A

By the way, in recent years, various types of lamps including vehicle lamps have been developed, and light irradiation modes have been diversified from the viewpoint of visibility and design. For example, in a vehicle lamp, a preceding vehicle, an oncoming vehicle, and a pedestrian are detected by a combination with a sensor, and the light irradiation state is set so that the light is not partially irradiated to these detection points. A type capable of controlling the pressure has also been developed.

Therefore, it is desirable that the light irradiation mode be diversified even in a lamp in which the light source is rotated together with the base.

Therefore, it is an object of the present invention to overcome the above-mentioned problems and to diversify light irradiation modes.

First, a light source unit according to the present invention includes an arrangement base rotatable about a predetermined rotation axis as a fulcrum, and a plurality of light sources arranged on the arrangement base, and at least two light sources among the plurality of light sources Are arranged at positions at different distances from the center of rotation in the radial direction of the arrangement base, so that the light sources can be individually turned on and off.

Thereby, at least two light sources arranged on the arrangement base are arranged at positions at different distances from the rotation center in the radial direction of the arrangement base, and individually turned on / off control for a plurality of light sources arranged on the arrangement base. Is made possible.

Secondly, in the light source unit according to the present invention, it is preferable that the at least two light sources are arranged at different positions in the circumferential direction as the distance from the rotation center increases.

(4) Since the position of the light source in the circumferential direction differs depending on the distance from the rotation center, it is possible to perform the lighting / light-off control according to the rotation position of the light source.

Third, in the light source unit according to the present invention described above, it is preferable that the lighting is performed when the plurality of light sources are moved to predetermined positions by rotation of the arrangement base.

(4) Since the plurality of light sources are turned off at positions other than the predetermined positions, the light sources are cooled at positions other than the predetermined positions.

Fourth, in the light source unit according to the present invention described above, it is preferable that a part of the movement trajectories of the light sources arranged at positions adjacent in the circumferential direction overlap in the radial direction.

(4) Accordingly, the movement trajectories of the light sources disposed adjacent to each other in the circumferential direction are not separated from each other in the radial direction.

Fifth, in the above-described light source unit according to the present invention, it is preferable that the light source is disposed at a position that does not overlap the rotation center.

(4) With this, when the arrangement base is rotated, light is emitted from the light source arranged at a position not overlapping the rotation center.

Sixth, a lamp according to the present invention is an arrangement base rotatable around a predetermined rotation axis, a plurality of light sources arranged on the arrangement base, and a light for controlling light emitted from the plurality of light sources. A control member, wherein at least two of the plurality of light sources are arranged at positions at different distances from the center of rotation in the radial direction of the arrangement base, and the light sources can be individually turned on and off. It was made.

Thereby, in the light source unit, at least two light sources arranged on the arrangement base are arranged at positions different in distance from the rotation center in the radial direction of the arrangement base, and individually for a plurality of light sources arranged on the arrangement base. In this case, the lighting control is enabled.

Seventh, in the lamp according to the present invention described above, a projection lens for projecting the light emitted from the light source to the outside is provided as the light control member, and the light-incident side focal point or the focus in the projection lens is provided. It is desirable that the light source existing at a position closest to the rotation center is disposed near the focal point.

This makes it possible to form a light distribution near the center requiring high resolution by a light source arranged at the focal point on the incident side, and to form a peripheral light distribution not requiring high resolution by another light source.

According to the present invention, at least two light sources arranged on the arrangement base are arranged at positions at different distances from the rotation center in the radial direction of the arrangement base, and individually for a plurality of light sources arranged on the arrangement base. Since the turning-on / off control is enabled, the light irradiation mode can be diversified.

FIG. 2 shows an embodiment of the light source unit and the lamp of the present invention together with FIG. 2 to FIG. 16, and this figure is a sectional view of a vehicle lamp. It is a front view showing the state where the light source was arranged on the arrangement base. It is a front view showing the state where the arrangement base was rotated. It is a figure showing an example of a light distribution pattern. FIG. 8 is a front view showing a state where a light source is arranged on an arrangement base in an example in which lighting and extinguishing is controlled within a lightable range. It is a figure which shows an example of the light distribution pattern formed in the example which is turned on / off in the range which can be turned on. FIGS. 8 to 15 show an example in which light sources are arranged side by side in the radial direction, and this figure is a cross-sectional view showing an example of a lamp unit. It is a front view showing the state where the light source was arranged on the arrangement base. It is a figure which shows the image of the lighting state at the time of always lighting. It is a figure which shows an example of the light distribution pattern at the time of always lighting. It is a figure showing the image of the lighting state at the time of lighting control. It is a figure showing an example of a light distribution pattern at the time of lighting control. It is a figure which shows another example of the light distribution pattern at the time of lighting control. It is a front view which shows another example of the arrangement state of a light source. It is a front view which shows another example of the arrangement state of a light source. It is a front view which shows the example of another control of a light source.

Hereinafter, embodiments for implementing the light source unit and the lamp of the present invention will be described with reference to the accompanying drawings. In the embodiment described below, the lamp of the present invention is applied to a vehicle headlamp. The lamp of the present invention can be applied to various vehicle lamps other than the vehicle headlamp, and can be applied to various lamps such as lighting devices used for vehicles other than the vehicle. Further, the light source unit of the present invention can be applied to various light source units used in various lamps including a vehicle lamp.

The lighting fixtures 1 are respectively attached to the left and right ends of the front end of the vehicle body.

The lamp 1 includes a housing 2 having an opening at the front end and a cover 3 attached to the housing 2 with the opening of the housing 2 closed (see FIG. 1). The housing 2 and the cover 3 constitute a lamp outer case 4. The internal space of the lamp outer housing 4 is formed as an arrangement space 5.

灯 The lamp unit 6 is arranged in the arrangement space 5. The lamp unit 6 has a support base 7, a lens holder 8, a projection lens 9, and a light source unit 10.

The support base 7 has a plate-shaped base portion 7a facing in the front-rear direction and an outer peripheral portion 7b protruding forward from the outer peripheral portion of the base portion 7a.

The lens holder 8 is formed in a ring shape, and is attached to the front surface of the outer peripheral portion 7b.

The projection lens 9 is, for example, formed in a substantially hemispherical shape that is convex forward, and is attached to and held by the lens holder 8. The projection lens 9 has a function of controlling incident light into parallel light or condensed light.

As described above, the projection lens 9 has a function of controlling incident light into parallel light or light to be condensed, and the projection lens 9 functions as a light control member that controls light. On the outer peripheral side of the projection lens 9, for example, a ring-shaped extension 11 is arranged.

The light source unit 10 includes a drive motor 12 functioning as a drive source, an arrangement base 13 rotated by the drive motor 12, and a plurality of light sources 14, 14,... Arranged on the arrangement base 13. In FIG. 1, the size of the light source 14 with respect to the focal area of the projection lens 9 is not set to an appropriate size in order to emphasize the arrangement base 13 and the light source 14. In practice, the light sources 14, 14,... On the arrangement base 13 are arranged near the focal area of the projection lens 9.

The drive motor 12 is attached to the base portion 7a of the support base 7, and the axial direction is set to the front-back direction.

The arrangement base 13 is formed in, for example, a disc shape or a flat column shape, and has a central portion connected to the drive motor 12 in a state where the axial direction is in the front-rear direction. Therefore, the arrangement base 13 is a rotation axis P whose center axis is a rotation fulcrum. The arrangement base 13 has a front surface formed as a light source arrangement surface 13a. The arrangement base 13 is rotated by the drive motor 12 about the rotation axis P as a fulcrum. The arrangement base 13 is formed of, for example, a metal material having a high heat dissipation property, and functions as a heat sink in addition to the function as a rotating body.

制 御 In the arrangement space 5, for example, a control circuit 15 is arranged below the light source unit 10. The control circuit 15 performs, for example, on / off control of the light sources 14, 14,... And rotation control of the drive motor 12.

Are arranged radially apart from each other on the outer peripheral portion of the light source arrangement surface 13a of the arrangement base 13 (see FIG. 2). As the light source 14, for example, a light emitting diode (LED) is used. Are arranged on the light source arrangement surface 13a via a substrate (not shown). Are arranged at positions that do not overlap the center of rotation (rotation axis P) of the arrangement base 13, and at least two of the light sources 14, 14,. Are arranged at different positions in the radial direction from the rotation center.

Are arranged at different positions in the circumferential direction as the distance from the center of rotation increases, and two light sources 14, 14 are arranged at symmetrical positions with respect to the center of rotation.

Specifically, for example, 18 light sources 14 are arranged, and light sources 14A, 14A, light sources 14B, 14B, light sources 14C, 14C,. 14I, the two light sources 14, 14 arranged in the radial direction, for example, the light source 14A and the light source 14B, the light source 14B and the light source 14C, are arranged at positions displaced by a certain angle in one circumferential direction. I have. The fixed angle is, for example, 22.5 degrees obtained by dividing 180 degrees into eight. The light sources 14, 14,... Are arranged in a substantially S-shape as a whole, and the light sources 14A, 14A closest to the rotation center and the light sources 14I, 14I farthest from the rotation center are on the same diameter D of the arrangement base 13. Are located.

In the light source unit 10, one light source 14A, 14B, 14C,..., Light source 14I and the other light source 14A, 14B, 14C,. They are symmetrically arranged.

In the light source unit 10, only one of the light sources 14A, 14B, 14C,..., And the light source 14I may be arranged on the arrangement base 13. However, since the light sources 14, 14,... Are arranged symmetrically with respect to the rotation center of the arrangement base 13, a stable weight balance at the time of rotation of the arrangement base 13 is secured, and the stability of the arrangement base 13 is secured. The rotated state can be secured. Further, by disposing a pair of light sources 14A, 14A, light sources 14B, 14B, light sources 14C, 14C,..., Light sources 14I, 14I, the number of light sources 14, 14,. Irradiation state can be secured.

The number of light sources 14 arranged on the arrangement base 13 is arbitrary as long as it is plural, and it is sufficient that at least two light sources 14 and 14 are arranged at positions different in distance from the rotation center in the radial direction of the arrangement base 13. . In addition, it is sufficient that at least two light sources 14, 14 are arranged at different positions in the circumferential direction as the distance from the center of rotation increases. Further, three or more sets of the light sources 14A, 14B, 14C,...

In the light source unit 10, the light sources 14A, 14A located at the position closest to the center of rotation are arranged at or near the light incident side focal point (rear focal point) of the projection lens 9.

In the light sources 14, 14,..., Except for the light sources 14, 14,... On the rotation center side, a part of the movement trajectory of the light sources 14, It is made to overlap. For example, the light source 14H and the light source 14I are arranged at positions adjacent to each other in the circumferential direction, and each of the movement locus Ha of the light source 14H and the movement locus Ia of the light source 14I when the arrangement base 13 is rotated overlaps each other ( The overlapping part is shown as T in FIG. Similarly, also in the light sources 14G and 14H that are adjacent in the circumferential direction, a part of the movement path Ga of the light source 14G and a part of the movement path Ha of the light source 14H when the arrangement base 13 is rotated overlap.

In the light source unit 10, even on the rotation center side of the arrangement base 13, a part of the movement trajectories of the light sources 14, 14 arranged at adjacent positions in the circumferential direction overlaps in the radial direction. Is also good.

In the lamp 1, the light sources 14, 14,... Can be individually turned on and off. Therefore, the control circuit 15 turns on and off the energized state for each light source 14. As a specific configuration, for example, a plurality of terminals (not shown) for supplying current to the light sources 14, 14,... A contact portion (not shown) electrically connected to the base is slidably positioned on the lower surface of the arrangement base 13. When the arrangement base 13 is rotated, the contact portion slides on the lower surface of the arrangement base 13 and the contact portion is connected to the terminal portion, so that the light source 14 corresponding to the connected terminal portion is energized and turned on. When the contact portion is separated from the terminal portion, the power supply to the light source 14, which has been turned on, is released, and the light source 14 is turned off. As another example of the control for the light sources 14, 14,..., A bypass circuit using a switching element is formed on the arrangement base 13 for each of the light sources 14, 14,. May be performed, and the light-on / off control of each of the light sources 14, 14,... May be performed.

As described above, the lighting 1 can be individually turned on / off for the light sources 14, 14,..., And in the light source unit 10, the light source unit 10, within a certain range A in the radial direction of the arrangement base 13. The light sources 14, 14,... Are turned on, and the light sources 14, 14,. Accordingly, the lighting is performed when the entire light source 14 is moved to the range A by the rotation of the arrangement base 13. The range A is a range of a horizontally long region including a diameter D extending in the left-right direction of the arrangement base 13, for example. In the lamp 1, the lighting may be performed when the entire light source 14 is moved to the range A, or the lighting may be performed when a part of the light source 14 is moved to the range A.

As described above, in the lamp 1, the light sources 14, 14,... Are turned on in the range A when the arrangement base 13 rotates, so that the light sources 14, 14 sequentially pass through the range A with the rotation of the arrangement base 13. ,... Are continuously lit, and it is recognized that the light source 14 existing in the range A is always lit.

The range A is a range including the diameter of the arrangement base 13, and when the arrangement base 13 rotates, the plurality of light sources 14, 14,.

For example, when the outermost light sources 14I, 14I are positioned in the range A by the rotation position of the arrangement base 13, the innermost light sources 14A, 14A are also positioned in the range A, and the light sources 14I, 14I and the light sources 14A, 14A are It is turned on (see FIG. 2). Further, for example, when the light sources 14G, 14G are positioned in the range A by the rotation position of the arrangement base 13, the innermost light sources 14A, 14A are also positioned in the range A, and the light sources 14G, 14G and the light sources 14A, 14A are turned on. (See FIG. 3).

In the light source unit 10, as described above, the light sources 14, 14,... Are arranged radially apart from each other, so that the light source 14 closer to the center of rotation is arranged more than the light source 14 farther from the center of rotation. The number of states that are located in the range A in one rotation of 13 increases, and the lighting time per unit time is longer for the light source 14 closer to the rotation center. Accordingly, the brightness of the light source unit 10 is highest on the rotation center side of the arrangement base 13 and decreases from the inner periphery to the outer periphery of the arrangement base 13.

In the light source unit 10, the current value supplied to the light sources 14, 14,... May be changed according to the position in the radial direction, and the luminance of the light source unit 10 may be controlled so as to be a desired luminance. . For example, the luminance may be controlled to be the same regardless of the position of the arrangement base 13 in the radial direction.

Light emitted from the light source 14 enters the projection lens 9, the direction of which is controlled by the projection lens 9, passes through the cover 3, and is emitted forward.

(4) When the light source 14 is turned on, heat generated from the light source 14 and the substrate is transmitted to the arrangement base 13 which also functions as a heat sink, and is discharged through the arrangement base 13 to perform cooling. At the same time, since the airflow is generated by the rotation of the arrangement base 13, the cooling is also performed by the airflow. Further, when the arrangement base 13 is rotated, the light is turned on only when the light source 14 is moved to the range A. When the light source 14 is not present in the range A, the light source 14 is turned off, and the light source 14 is not present in the range A. The time is the cooling time of the light source 14.

Note that the size of the range A in the circumferential direction may be a size in which at least one of the light sources 14 is entirely located. For example, the range A is momentarily separated in the circumferential direction when the arrangement base 13 rotates. The size may be such that the entirety of the two or more light sources 14 is located. However, the size of the range A in the circumferential direction can be set based on the number of rotations of the arrangement base 13 and the number of light sources 14, 14,. Desirably, it is more preferable to set in consideration of a cooling time required for the light source 14 to enhance the cooling performance, that is, a light-off time of the light source 14 for one rotation of the arrangement base 13.

Since the range A is a horizontally long fixed range, the light distribution pattern formed by the light emitted from the light sources 14, 14,... Is likely to have a horizontally long shape. A light distribution pattern H of a high beam is formed by the light emitted from 14,... (See FIG. 4). However, the light distribution pattern formed by the light emitted from the light sources 14, 14,... Is not limited to the high beam light distribution pattern, and may be a low beam light distribution pattern. It may be a light distribution pattern of daytime illumination such as when used as a light source, or may be various light distribution patterns when used as a marker light.

4 The light distribution pattern shown in FIG. 4 is a light distribution pattern obtained by combining a high beam light distribution pattern H and a low beam light distribution pattern L. The low beam light distribution pattern L is formed by, for example, light emitted from another low beam lamp unit (not shown) arranged adjacent to the lamp unit 6.

When the high beam light distribution pattern H is formed, for example, a preceding vehicle, an oncoming vehicle, a pedestrian, and the like are detected by a combination with a sensor, and light is partially emitted to these detection points. It is possible to control turning on / off so that irradiation is not performed (see FIGS. 5 and 6).

When the preceding vehicle, oncoming vehicle, pedestrian, and the like are detected by the sensor, the detection result is transmitted to the control circuit, and even in the range A in which the light can be turned on, the light source 14, 14,... Are turned off (see FIG. 5), and a light distribution pattern Hx in a state where the light is turned off in the range Ax is formed (see FIG. 6). The light distribution pattern illustrated in FIG. 6 is a light distribution pattern obtained by combining a high beam light distribution pattern Hx and a low beam light distribution pattern L in a state where the light is turned off in the range Ax, and the light distribution pattern Hx is in the range Ax. The unlit part is the dark part C. The dark portion C does not irradiate light to the occupant of the preceding vehicle, the occupant of the oncoming vehicle, the pedestrian, and the like, and the generation of dazzling light to these occupants and pedestrians is prevented.

Depending on the detection result, the light source 14, 14,... May be turned off by the control circuit in a plurality of ranges Ax corresponding to a plurality of detection points in the range A.

As described above, in the lamp 1, the lighting is performed when the plurality of light sources 14, 14,... Are moved to a predetermined position (range A) by rotation of the arrangement base 13.

Therefore, the plurality of light sources 14, 14, ... are turned off at positions other than the predetermined positions, so that the light sources 14, 14, ... are cooled at positions other than the predetermined positions, and the light sources 14, 14, ... .. A favorable driving state can be ensured.

In particular, since the plurality of light sources 14, 14,... Are sequentially turned on in the range A and turned off in other than the range A, even when a large amount of current is supplied to the light source 14 only in the range A, sufficient cooling can be achieved by turning off the light. , It is possible to secure a high-brightness irradiation state using inexpensive light sources 14, 14,..., And to perform high-brightness irradiation without increasing the manufacturing cost of the lamp 1. The state can be secured.

Are arranged at different positions in the circumferential direction as the light sources 14, 14, ... are separated from the rotation center of the arrangement base 13.

Therefore, since the positions in the circumferential direction of the light sources 14, 14,... Differ depending on the distance from the rotation center, it is possible to perform the light-on / off control according to the rotational positions of the light sources 14, 14,. The degree of freedom of the lighting control can be improved.

Are arranged at different positions in the radial direction of the arrangement base 13 and have different positions in the circumferential direction depending on the distance from the center of rotation, so that the light sources 14, 14,. It is scattered and arranged.

Therefore, heat generated in the light sources 14, 14,... And the substrate is not transferred to a part of the arrangement base 13, so that heat radiation can be improved.

Furthermore, a part of the movement trajectories of the light sources 14 arranged at positions adjacent to each other in the circumferential direction overlap in the radial direction.

Therefore, since the movement trajectories of the light sources 14 and 14 arranged at positions adjacent to each other in the circumferential direction are not spaced apart in the radial direction, the number of light sources 14 and 14 arranged in the radial direction can be increased, and high-luminance irradiation can be performed. The state can be ensured, and a good light distribution pattern in which no non-light emitting portion exists in the irradiation area can be formed.

.. Are arranged at positions not overlapping the rotation center of the arrangement base 13.

Therefore, when the arrangement base 13 rotates, light is emitted from the light sources 14, 14,... Arranged at positions not overlapping with the center of rotation, so that the irradiation range can be expanded in the radial direction.

Further, when the light source 14 is arranged at a position overlapping the rotation center, the light source 14 is always in the range A when the arrangement base 13 is rotated. .. Are arranged at positions that do not overlap with the rotation center of the arrangement base 13, so that the light-on / off control for all the light sources 14, 14,.

Furthermore, a projection lens 9 for projecting light emitted from the light sources 14, 14,... To the outside is provided as a light control member. The light sources 14, 14 existing at the position closest to the center are arranged.

Therefore, the light distribution near the center where high resolution is required is formed by the light sources 14 and 14 arranged at the focal point on the incident side, and the peripheral light distribution where high resolution is unnecessary is required for the other light sources 14, 14,. Thus, the required light distribution can be formed in a large area.

Next, an example in which the light sources 14, 14,... Are arranged in the radial direction will be described (see FIGS. 7 to 15).

灯 In this example, the lamp unit 6A is used (see FIG. 7).

In the lamp unit 6A, the arrangement base 13A and the drive motor 12 are arranged in a state where the axial direction is set in the front-rear direction, and the arrangement base 13A is formed in, for example, a disk shape or a flat column shape, and the axial direction is set in the front-rear direction. In this state, the central portion is connected to the drive motor 12. Therefore, the arrangement base 13A is in a state where the light source arrangement surface 13a faces forward.

Are arranged, for example, at equal intervals on one radius R of the light source arrangement surface 13a of the arrangement base 13A (see FIG. 8). The light sources 14, 14,... Are arranged at positions not overlapping the rotation center of the arrangement base 13A.

When the arrangement base 13A rotates, light is emitted from the light sources 14, 14,..., And the light sources 14, 14,... Are always turned on when the arrangement base 13A rotates (see FIG. 9). Note that the hatched portions in FIG. 9 show images of the lighting states of the light sources 14, 14,.... The light emitted from the light sources 14, 14,... Is controlled in direction by the projection lens 9, is transmitted through the cover 3, and is irradiated forward.

As the light distribution pattern formed by the light emitted from the light sources 14, 14,... When the arrangement base 13A rotates, for example, a high-beam light distribution pattern M is formed (see FIG. 10). The light distribution pattern M is formed in a substantially elliptical shape formed by a plurality of annular patterns m, m,... Formed by the light sources 14, 14,.

The light distribution pattern formed by the light emitted from the light sources 14, 14,... When the arrangement base 13A rotates may be a low-beam light distribution pattern, and may be used as a daytime running lamp. Such a light distribution pattern of daylighting may be used, or various light distribution patterns when used as a sign lamp may be used.

Also, in the lamp 1, since the light sources 14, 14,... Can be individually turned on and off, the at least one light source 14 may be turned off when the arrangement base 13A rotates. 11). Note that the hatched portions in FIG. 11 show images of the lighting state of each of the light sources 14, 14,.

In the same manner as described above, such light-on / off control detects, for example, a preceding vehicle, an oncoming vehicle, a pedestrian, and the like by combination with a sensor, and irradiates light partially to these detected portions. Lighting / lighting-off control for preventing the lighting may be performed.

At this time, the light distribution pattern formed by the light emitted from the light sources 14, 14,... This is the light pattern Ma (see FIG. 12).

By turning on / off the light sources 14, 14,... During the rotation of the arrangement base 13A in which the light sources 14, 14,. Can perform light shielding with a stepless decomposition performance, and can perform light shielding in the radial direction of the arrangement base 13A with the decomposition performance for the number of arrangements of the light sources 14, 14,.

.. Are turned off when the light sources 14, 14,... Are positioned on the upper side during the rotation of the arrangement base 13A, thereby forming a low-beam light distribution pattern or a light distribution pattern La close thereto. It is also possible (see FIG. 13).

In the above description, an example is shown in which the light sources 14, 14,... Are arranged at equal intervals on one radius R of the arrangement base 13A, but the light sources 14, 14,. May be arranged at equal intervals, may be arranged at equal or unequal intervals on one diameter, and may have two or more radii R, R,. .. May be arranged on one or more diameters D, D,... (See FIG. 14). Also, the light sources 14, 14,... Arranged in the radial direction may be arranged on different radii R, R,.

As described above, by constantly turning on or off the light sources 14, 14,... When the arrangement base 13A is rotated using the lamp unit 6A, the lamp unit 6A has no reflector or the like. Since the light sources 14, 14,... Are arranged in a small number without being arranged in the circumferential direction, it is possible to ensure good heat radiation performance while ensuring the miniaturization of the lamp 1.

In the lamp 1, it is also possible to perform the following control (see FIG. 16).

A plurality of light sources i, i,... Are arranged on the arrangement base 13 in the radial direction. FIG. 16 shows only one light source i.

When the light source i arranged on the arrangement base 13 is located at r (i) in the radial direction from the rotation center O and at an angle θ in the circumferential direction from the reference line Q, the polar coordinates are defined as (r (i), θ). You. The light sources r (1), r (2),..., R (n) are arranged on the arrangement base 13, and the respective light sources r (1), r (2), r (3) are arranged. ),..., R (n) are controlled to be turned on and off, thereby enabling light emission control at each position on the polar coordinates described above.

As described above, in the lamp 1, at least two of the light sources 14, 14,... Among the plurality of light sources 14, 14,. , And the light sources 14, 14,... Can be individually turned on / off.

Therefore, at least two light sources 14 arranged on the arrangement bases 13 and 13A are arranged at positions at different distances from the rotation center in the radial direction of the arrangement bases 13 and 13A, and a plurality of light sources 14 arranged on the arrangement bases 13 and 13A are arranged. Since the light-on / off control can be individually performed for the light sources 14, 14,..., The light irradiation mode can be diversified.

Are turned off when the arrangement bases 13 and 13A rotate, so that the light-off time can be set as the cooling time, and the light-off time can be sufficiently cooled by the light-off time. Can be performed, the cooling performance can be enhanced, and the light irradiation mode can be diversified.

1: lamp, 8: projection lens (light control member), 11: light source unit, 13: arrangement base

Claims (7)

An arrangement base rotatable around a predetermined rotation axis,
A plurality of light sources arranged on the arrangement base,
At least two light sources among the plurality of light sources are arranged at different positions from the center of rotation in a radial direction of the arrangement base,
A light source unit capable of individually turning on and off the plurality of light sources. The light source unit according to claim 1, wherein the at least two light sources are arranged at different positions in a circumferential direction as the distance from the rotation center increases. The light source unit according to claim 1, wherein lighting is performed when the plurality of light sources are moved to a predetermined position by rotation of the arrangement base. The light source unit according to claim 3, wherein a part of the movement trajectories of the light sources arranged at positions adjacent to each other in the circumferential direction overlap in the radial direction. The light source unit according to claim 1, wherein the light source is arranged at a position that does not overlap the rotation center. An arrangement base rotatable around a predetermined rotation axis,
A plurality of light sources arranged on the arrangement base,
A light control member for controlling light emitted from the plurality of light sources,
At least two light sources among the plurality of light sources are arranged at different positions from the center of rotation in a radial direction of the arrangement base,
A lighting fixture in which lighting control of the plurality of light sources can be individually performed. A projection lens for projecting light emitted from the light source to the outside is provided as the light control member,
The lamp according to claim 6, wherein the light source located at a position closest to the rotation center is disposed at or near the focal point on the light incident side of the projection lens.

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