JP2016046025A - Luminaire and vehicle mounted with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve miniaturization of a luminaire regarding a luminaire and a vehicle mounted with the same.SOLUTION: In a radiator 9 for performing heat radiation of laser elements 13, 15, one surface side becomes a fixing surface of the laser elements 13, 15, and the other surface side becomes a formation surface of heat radiation fins 16. On the heat radiation fin formation surface, the plurality of heat radiation fins 16 extending from one side to the other side are provided, and a cooling fan 17 is provided for blowing air from the other side of the heat radiation fins 16 toward the one side. Therefore, even when the radiator 9 is miniaturized, the laser elements 13, 15 can be sufficiently cooled by the air blowing of the cooling fan 17, and a luminaire 3 can be miniaturized.SELECTED DRAWING: Figure 4

Description

  The present invention relates to, for example, an illuminating device used as a headlight of an automobile and an automobile equipped with the same.

  Since an illuminating device using a laser element has high luminance, it has been proposed to use it as a headlight of an automobile.

  Specifically, the lighting device is sequentially disposed on the main body, a heat radiator fixed to the main body, a laser element fixed to the heat radiator in a state capable of conducting heat, and a laser light emitting side of the laser element. In addition, the main body or a phosphor fixed to the heat radiating body and a light distribution lens are provided (the following Patent Document 1 is present as similar literature).

  In this configuration, first, laser light from the laser element is irradiated to the phosphor to form white light, and then this white light is used as illumination light in front of the automobile via the light distribution lens. I try to irradiate.

JP 2012-203995 A

  The problem with the conventional example is that the radiating device itself becomes large because the heat radiator becomes large.

  In other words, the laser element has high brightness, but generates a large amount of heat, and in order to cool it, the heat dissipating body also becomes large. If the heat dissipating body is large, the lighting device itself becomes large. .

  Therefore, the present invention aims to reduce the size of the lighting device.

  In order to achieve this object, the present invention includes a main body, a radiator fixed to the main body, a laser element fixed to the heat radiator in a state capable of conducting heat, and a laser beam of the laser element. The phosphor is arranged sequentially on the emission side, and directly or indirectly fixed to the main body or the heat radiating body, and a light distribution lens, and the heat radiating body has at least one surface side of the laser element. The other surface side is a surface for forming the heat radiating fins, and the heat radiating fin forming surface is provided with a plurality of heat radiating fins extending from one side to the other side and the other side of the heat radiating fins. A cooling fan that blows air from one side to the other side is provided, and at least one of a direction indicator and a vehicle width lamp is arranged on one side of the light distribution lens of the main body, and one side of the radiating fin forming surface By the above The portion facing the indicator or the vehicle width lamp is provided with a mounting space for a cleaning liquid tank for storing at least a cleaning liquid for cleaning the optical path portion from the light distribution lens, thereby achieving the intended purpose. is there.

  As described above, in the present invention, the heat radiating body for radiating the laser element has one surface side as a fixing surface of the laser element and the other surface side as a radiating fin forming surface. A plurality of radiating fins extending from the side toward the other side were provided, and a cooling fan for blowing air from the other side of the radiating fin toward one side was provided.

  For this reason, even if the heat radiator is reduced in size, the laser element can be sufficiently cooled by the ventilation of the cooling fan. As a result, the illumination device can be reduced in size.

  Further, in the present invention, the mounting space for the cleaning liquid tank can be provided by the amount of the heat sink reduced by blowing the cooling fan. However, hot air after passing through the radiation fins is supplied to this mounting space. Therefore, the temperature of the cleaning liquid in the cleaning liquid tank can be increased and the cleaning effect can be enhanced.

The front view which shows the motor vehicle carrying the illuminating device of Embodiment 1 of this invention. Same as above, a front view showing the automobile seen through the illumination device portion Same as above, lighting equipment Sectional view of the AA line of FIG. Sectional view taken along line BB in FIG. Sectional view of the CC line of FIG. The figure which shows the flow of the cooling air of an illuminating device

  Hereinafter, an example in which a lighting device according to an embodiment of the present invention is mounted on an automobile will be described with reference to the accompanying drawings.

(Embodiment 1)
In FIG. 1, in an automobile 1, lighting devices 3 called headlights are arranged on both the front left and right sides of a main body 2.

  In addition, a camera 5 is disposed as an example of a detection unit for confirming a driving environment in front of the automobile 1 at the front part 4 in the interior of the automobile 1.

  In other words, in the present embodiment, the illumination device 3 illuminates the illumination area in front of the automobile 1, but the camera 5 detects the driving environment in front of the automobile 1 and controls (blocks or dimmes) the illumination. )

  For easy understanding of the configuration of the illuminating device 3, FIG. 2 shows the illuminating device 3 in a transparent state. The light distribution lens 7, the high beam light distribution lens 8, the radiator 9, the direction indicator 10, and the mounting space 12 for the cleaning liquid tank 11 are integrated.

  Hereinafter, a detailed configuration of each unit will be described.

  First, as shown in FIGS. 3 and 4, the radiator 9 is a planar mounting surface in which a low beam laser element 13, a movable mirror 14, and a high beam laser element 15 are mounted on the upper surface (one surface side). It has become.

Further, as shown in FIGS. 5 and 6, a plurality of radiating fins 16 extending downward are provided on the lower surface (other surface side) of the radiator 9.

  Each radiating fin has a shape extending from the inside of the automobile 1 to the outside, that is, from the movable mirror 14 side to the high beam laser element 15 side.

  A cooling fan 17 is provided on the inner side, that is, on the movable mirror 14 side, as shown in FIGS.

  Next, the optical path from the low beam laser element 13 will be described.

  Laser light with a wavelength of, for example, 405 nm blue-violet emitted from the low beam laser element 13 is scanned left and right and up and down by the movable mirror 14, and then irradiated to the phosphor 18, where white light is generated, Thereafter, the light is irradiated to the low beam illumination area in front of the automobile 1 through the low beam light distribution lens 7.

  In addition, when an oncoming vehicle is detected in front of the automobile 1 by the camera 5 described above (for example, a driving environment is detected), this is also performed in the conventional example, but the oncoming vehicle portion is not irradiated with illumination light. To.

  Next, the optical path from the high beam laser element 15 will be described.

  Laser light having a wavelength of, for example, 405 nm blue-violet emitted from the high-beam laser element 15 is reflected forward by the fixed mirror 19 shown in FIG. 5 and then irradiated to the phosphor 20 to generate white light. After that, the high beam illumination area in front of the automobile 1 is irradiated through the high beam light distribution lens 8.

  As described above, in this embodiment, the front of the automobile 1 is illuminated by the low beam laser element 13 and the high beam laser element 15.

  During such illumination, the temperature of the laser element 13 for the low beam, the movable mirror 14 and the laser element 15 for the high beam rises. Therefore, they are fixed to the upper surface of the heat radiating body 9 in a state where heat can be conducted. The cooling air is sent to the radiating fins 16 for cooling.

  That is, as shown in FIGS. 4 and 7, the cooling air from the cooling fan 17 extends from the inside of the automobile 1 to the outside, that is, from the movable mirror 14 side to the high beam laser element 15 side. The temperature of the low beam laser element 13, the movable mirror 14, and the high beam laser element 15 is suppressed by proceeding between the radiation fins 16 and radiating heat from the radiation fins 16. The direction in which the cooling air flows is indicated by an arrow.

  Further, the cooling air whose temperature has been raised by heat radiation from the radiation fins 16 is then divided into two parts as shown in FIG. 7, and one is supplied to the direction indicator 10 part as shown in FIG. Cooling is also performed.

  In other words, the temperature rises due to the heat radiation from the heat radiation fins 16, but if the direction indicator 10 is composed of a semiconductor called an LED, for example, this also increases the temperature. Even the cooling air from the fins 16 can sufficiently cool the air.

Further, the other of the cooling air whose temperature has been raised by the heat radiation from the radiation fins 16 is supplied to the mounting space 12 of the cleaning liquid tank 11 as shown in FIG. 7, and the inside of the cleaning liquid tank 11 accommodated in the mounting space 12 is supplied. Raise the temperature of the wash water.

  For example, the cleaning water in the cleaning liquid tank 11 is jetted to the front portions of the low beam light distribution lens 7 and the high beam light distribution lens 8 shown in FIG. The effect of clearing the optical path ahead is enhanced.

  Specifically, a front cover (not shown) is disposed in front of the low-beam light distribution lens 7 and the high-beam light distribution lens 8, so that hot water is sprayed onto the front cover. , To clear the optical path.

  As described above, in the present embodiment, the heat dissipating body 9 that dissipates the laser elements 13 and 15 has one surface side as a fixing surface of the laser elements 13 and 15 and the other surface side as a formation surface of the radiation fins 16. A plurality of heat radiation fins 16 extending from one side to the other side of the heat radiation fin forming surface are provided, and a cooling fan that blows air from the other side of the heat radiation fin 16 toward one side. 17 was provided.

  For this reason, even if the heat radiator 9 is reduced in size, the laser elements 13 and 15 can be sufficiently cooled by the ventilation of the cooling fan 17, and as a result, the illumination device 3 can be reduced in size. I can do it.

  Further, the mounting space 12 for the cleaning liquid tank 11 can be provided by the amount of the radiator 9 reduced by the cooling fan 17, but the warm air after passing through the radiation fins 16 can be provided in the mounting space 12. Therefore, the temperature of the cleaning liquid in the cleaning liquid tank 11 can be increased, and the cleaning effect can be enhanced.

  In the present embodiment, as shown in FIG. 1, the vehicle width lamp 21 is separated from the lighting device 3. However, the vehicle width lamp 21 is also in a heat conduction state with the radiator 9 together with the direction indicator 10. By fixing, it can also be cooled by the cooling air together with the direction indicator 10.

  Moreover, in this embodiment, since the direction indicator 10 is comprised with the LED board 22, it can guide the said cooling wind to the LED board 22 side.

  Further, in the above embodiment, the phosphors 18 and 20 and the light distribution lenses 7 and 8 are fixed directly or indirectly to the main body 6, but the phosphors 18 and 20 and the light distribution lenses 7 and 8 are also temperature-controlled. Since they rise, they can also be cooled with cooling air if they are fixed to the radiator 9 in a thermally conductive state.

  As described above, according to the present invention, the heat radiating body for radiating the laser element has one surface side as a fixing surface of the laser element and the other surface side as a radiating fin forming surface. A plurality of radiating fins extending from the side toward the other side were provided, and a cooling fan for blowing air from the other side of the radiating fin toward one side was provided.

  For this reason, even if the heat radiator is reduced in size, the laser element can be sufficiently cooled by the ventilation of the cooling fan. As a result, the illumination device can be reduced in size.

Further, in the present invention, the mounting space for the cleaning liquid tank can be provided by the amount of the heat sink reduced by blowing the cooling fan. However, hot air after passing through the radiation fins is supplied to this mounting space. Therefore, the temperature of the cleaning liquid in the cleaning liquid tank can be increased and the cleaning effect can be enhanced.

  Therefore, the use as an illuminating device and a car equipped with the lighting device is expected.

DESCRIPTION OF SYMBOLS 1 Automobile 2 Main body body 3 Illumination device 4 Car interior 5 Camera 6 Main body 7 Light distribution lens 8 Light distribution lens 9 Radiator 10 Direction indicator 11 Cleaning liquid tank 12 Mounting space 13 Laser element 14 Movable mirror 15 Laser element 16 Radiation fin 17 Cooling fan 18 Phosphor 19 Fixed mirror 20 Phosphor 21 Car width lamp 22 LED substrate

Claims (6)

A main body, a heat radiator fixed to the main body, a laser element fixed in a heat-conducting state to the heat radiator, and sequentially disposed on the laser light emitting side of the laser element, the main body, or A phosphor directly and indirectly fixed to the radiator, and a light distribution lens, wherein the radiator has at least one surface as a fixing surface of the laser element and the other surface is a surface on which the radiation fin is formed. A cooling fan that is provided with a plurality of radiating fins extending from one side to the other side of the radiating fin forming surface and blows air from the other side of the radiating fin toward one side. And at least one of a direction indicator and a vehicle width lamp is disposed on one side of the light distribution lens of the main body, and is opposed to the direction indicator or the vehicle width lamp on one side of the radiating fin forming surface. There are few Kutomo lighting device provided with a mounting space of the solution tank for storing a cleaning liquid for cleaning the optical path portion from said light distribution lens. The lighting device according to claim 1, wherein a cleaning liquid tank is disposed in the mounting space. First and second laser elements are disposed on one surface side of the heat dissipating body, and a movable mirror, a first phosphor, and a first light distribution lens are disposed on the laser light emitting side of the first laser element. The lighting device according to claim 1, wherein a fixed mirror, a second phosphor, and a second light distribution lens are disposed on a laser beam emission side of the second laser element. The lighting device according to claim 3, wherein the first and second laser elements, the movable mirror, the fixed mirror, and the first and second light distribution lenses are fixed to one surface side of the heat radiating body in a heat conductive state. The motor vehicle which has arrange | positioned the illuminating device as described in any one of the said Claim 1 to the front side of the main body. The lighting device is mounted on the left and right in front of the main body, and each lighting device is disposed such that a light distribution lens is located inside a direction indicator or a vehicle width lamp. Automobile.