TWI428534B - Lamp - Google Patents

Description

Headlight

The present invention relates to the field of lighting technologies, and in particular, to a vehicle lamp.

At present, the Light Emitting Diode (LED) is gradually replacing the Cold Cathode Fluorescent Lamp (CCFL) as a light source for various lighting devices due to its long service life and wide color gamut. Reference may be made to the document "Solid-State Lighting: Toward Superior Illumination" by Michael S. Shur et al., October 2005, Proceedings of the IEEE, Vol. 93, No. 10.

The lamp is one of the important lighting devices in life, and it is installed in various parts of the vehicle to facilitate the driving of the vehicle. The headlights generally include nighttime lights, turn signals, fog lights, brake lights, and position lights. Among them, the night light is commonly called "headlight", which is used to illuminate the road when driving at night. The turn signal is used when the vehicle is turned and turned on intermittently to remind the vehicle and pedestrians of the front, rear, left and right. Fog lights are used to help drivers improve visibility when driving in the fog, and to ensure that the opposite car is found in time to take measures to safely meet. The brake light is used to inform the rear car, and the front car needs to slow down or stop. The position light is used to indicate the outline of the car and the warning light to remind other vehicles to pay attention. It is installed on the top edge of the car and can indicate the height of the car and the width of the car. Generally, car lights need to have a large illumination, such as night lights, fog lights, brake lights, and the like. However, in the prior art lights, since the power of the light-emitting diode is small, The light intensity is weak, so the lamp with the light-emitting diode as the light source usually cannot have a good lighting effect, which will seriously affect the driving safety of the vehicle and the safety of the driver.

In view of this, it is necessary to provide a lamp with a good lighting effect.

A vehicle lamp will be described below by way of example.

A vehicle lamp includes a plurality of light sources, a plurality of reflectors, and a base for setting a plurality of reflectors. One of the plurality of reflectors is disposed in the middle of the base, and the remaining reflectors are arranged around the reflector located in the middle of the base. Each of the reflectors has a reflecting surface which is a paraboloid, and the plurality of light sources are respectively disposed on the optical axes of the plurality of reflecting surfaces. The lamp further includes a protective cover that cooperates with the base, the protective cover includes a light transmitting portion and a connecting portion, the light transmitting portion is opposite to the plurality of light sources and the plurality of reflectors for transmitting the light emitted by the plurality of light sources and the plurality of reflections The light reflected by the body is used for connecting the light transmitting portion and the base.

In the lamp of the technical solution, the plurality of reflectors are arranged around, and each of the reflectors has a complete parabolic reflecting surface, so that the plurality of reflectors can not only reflect the beams emitted by the plurality of light sources into approximately parallel beams. The arrangement of the plurality of beams can also form a light field with a better light intensity distribution, so that the lamp has a better illumination effect, which helps to ensure the safety of the vehicle and the safety of the driver.

10, 20‧‧‧ headlights

11, 21‧‧‧ Pedestal

12, 22‧‧‧ reflectors

13‧‧‧Light source

14‧‧‧ protective cover

110‧‧‧ receiving holes

111, 211‧‧‧ first surface

112‧‧‧ second surface

113‧‧‧ third surface

120‧‧‧through hole

121‧‧‧reflecting surface

122, 222‧‧‧ end face

123‧‧‧ outer wall

131‧‧‧Light Diode Wafer

132‧‧‧ positive electrode

133‧‧‧negative electrode

134‧‧‧Reflective Cup

135‧‧‧Package

136‧‧‧Base

137‧‧‧Flame powder

141‧‧‧Transmission Department

142‧‧‧Connecting Department

1341‧‧‧ side wall

1 is a front elevational view of a vehicle lamp provided by a first embodiment of the present technical solution.

2 is a cross-sectional view of the vehicle lamp according to the first embodiment of the present technical solution taken along the line II-II in FIG. 1.

FIG. 3 is a schematic structural view of a light source of a vehicle lamp according to a first embodiment of the present technical solution.

4 is a front elevational view of a vehicle lamp provided by a second embodiment of the present technical solution.

FIG. 5 is a cross-sectional view of the vehicle lamp according to the second embodiment of the present technical solution taken along the line V-V in FIG. 4.

The vehicle lamp provided by the technical solution will be further described in detail below with reference to the accompanying drawings and the embodiments.

Referring to FIG. 1 and FIG. 2 , the first embodiment of the present invention provides a vehicle lamp 10 including a base 11 , a plurality of reflectors 12 , a plurality of light sources 13 , and a protective cover 14 .

The susceptor 11 is used to provide a plurality of reflectors 12. In this embodiment, the base 11 is a cylinder having a first surface 111, a second surface 112 opposite to the first surface 111, and a third surface 113 connecting the first surface 111 and the second surface 112. The first surface 111 is preferably provided with a highly reflective material that better reflects the surface of the beam, and the first surface 111 can be a planar, parabolic or other shaped surface. In this embodiment, the first surface 111 is planar. The second surface 112 is for connecting with a vehicle body (not shown), and its shape is not limited. The third surface 113 is used for abutting with other lamps or the vehicle body, and its shape is not limited.

The susceptor 11 has a plurality of receiving holes 110 penetrating through the first surface 111 and the second surface 112. The plurality of receiving holes 110 are respectively configured to receive the plurality of reflectors 12 . The shape and number of the receiving holes 110 correspond to the shape and number of the reflectors 12, respectively. The arrangement of the plurality of receiving holes 110 is not limited. For example, a receiving hole 110 may be located in the middle of the base 11 , a central axis thereof coincides with a central axis of the base 11 , and the remaining receiving holes surround the receiving hole 110 in the middle of the base 11 . Arranged in a multi-turn ring. In this embodiment, the housing The holes 110 are cylindrical recessed grooves, the number of which is 20. A receiving hole 110 is located in the middle of the base 11 , and the seven receiving holes 110 are closely spaced around the receiving hole 110 in the middle of the base 11 . The other 12 receiving holes 110 surround the receiving hole 110 in the middle of the base 11 . The equal intervals are closely arranged outside the seven receiving holes 110. Moreover, the distance between the seven receiving holes 110 and the central axis of the base 11 is the same, and the distance between the twelve receiving holes 110 and the central axis of the base 11 is also the same. The diameter of the base 11 can be between 60 and 120 mm, and the diameter of the receiving hole 110 can be between 10 and 20 mm.

The plurality of reflectors 12 are in one-to-one correspondence with the plurality of receiving holes 110, and the plurality of reflectors 12 are arranged in the same manner as the plurality of receiving holes 110. That is, one reflector 12 is located in the middle of the susceptor 11, its central axis coincides with the central axis of the susceptor 11, and the remaining reflectors 12 are arranged on a plurality of concentric circles centered on the reflector 12 at the center of the susceptor 11. . Specifically, in this embodiment, one reflector 12 is located at the center of the susceptor 11, seven reflectors 12 are arranged on a first circle centered on the reflector 12 in the middle of the susceptor 11, and 12 reflectors 12 are arranged. The reflector 12 located in the middle of the base 11 is centered on a second circle, and the first circle is in the second circle.

The reflector 12 is a cylinder corresponding to the receiving hole 110, and has a reflecting surface 121 for reflecting a light beam, an end surface 122 opposed to the reflecting surface 121, and an outer wall 123 connecting the reflecting surface 121 and the end surface 122. The reflecting surface 121 is for fully reflecting the light beam, and the reflecting surface 121 is a complete paraboloid, and any cross-sectional shape thereof is circular. In this embodiment, the reflective surface 121 is connected to the first surface 111 of the pedestal 11 , and the end surface 122 and the outer wall 123 are located in the receiving hole 110 .

The complex light source 13 is in one-to-one correspondence with the plurality of reflectors 12. The complex light source 13 is for emitting a light beam which is adjacent to the first surface 111 of the susceptor 11 and the reflecting surface 121 of the reflector 12, and is disposed on the optical axis of the complex reflector 12, that is, the central axis. Thus, the complex light source 13 has an arrangement similar to that of the plurality of reflectors 12. Preferably, the plurality of reflectors 12 are disposed at the focal point of the plurality of reflecting surfaces 121, so that the light emitted by the plurality of light sources 13 can be reflected by the reflecting surface 121 into an approximately parallel beam, so that the lamp 10 can be concentrated. Light field distribution.

In the embodiment, the central portion of the plurality of reflectors 12 is provided with a through hole 120 penetrating the reflective surface 121 and the end surface 122, and the plurality of through holes 120 penetrate the focus of the reflective surface 121. The plurality of light sources 13 are placed at one end of the plurality of through holes 120 near the reflecting surface 121. Certainly, an electrical connection line (not shown) may be disposed in the through hole 120 to support and electrically connect an external power source (not shown) and the light source 13.

The complex light source 13 is a packaged light emitting diode, and the color of the light is not limited. In this embodiment, referring to FIG. 3 , the light source 13 is a white light emitting diode including a light emitting diode chip 131 , a positive electrode 132 , a negative electrode 133 , a reflector cup 134 , a package body 135 , and a substrate 136 . The LED wafer 131, the positive electrode 132, the negative electrode 133, the reflector 134, and the package 135 are all disposed on the substrate 136. The light-emitting diode wafer 131 emits a blue light beam at a constant voltage, which is connected to the positive electrode 132 and the negative electrode 133 by a metal wire. The positive electrode 132 and the negative electrode 133 are connected to an electrical connection line of an external power source to give the light-emitting diode wafer 131 a certain voltage. A recessed-shaped receiving groove is formed in the middle of the reflector 134 to accommodate the LED chip 131 and the package 135. The accommodating groove has a side wall 1341 for reflecting the light beam emitted from the illuminating diode chip 131 so that the light beam emerges as far as possible along the central axis of the accommodating groove. The package body 135 is disposed in the accommodating groove and contains a phosphor powder 137 distributed around the LED chip 131 for generating direct excitation of the blue light emitted by the LED chip 131. Yellow light, whereby the yellow light can be mixed with the remaining blue light emitted by the LED chip 131 to form white light. Of course, the light source 13 It can also be a white light-emitting diode of other structures, and white light can be formed by other means.

The complex light source 13 is preferably a light-emitting diode having a higher brightness, for example, a light-emitting diode having an emission power greater than or equal to 0.5 watts and a luminous efficiency greater than or equal to 24 lumens per watt.

The protective cover 14 cooperates with the base 11 for protecting the plurality of light sources 13 and the plurality of reflectors 12. Specifically, the protective cover 14 includes a light transmitting portion 141 and a connecting portion 142. The light transmitting portion 141 is a circular plate made of transparent glass or resin, opposite to the first surface 111 of the susceptor 11, so as to transmit the light beam emitted from the plurality of light sources 13 and the light beam reflected by the reflecting surface 121. The connecting portion 142 is annular and is used for connecting the light transmitting portion 141 and the third surface 113 of the base 11. Therefore, the protective cover 14 does not affect the emission of the light beam while protecting the complex light source 13 and the plurality of reflectors 12.

In the technical solution, the plurality of reflectors 12 are arranged in a plurality of annular rings, and each of the reflectors 12 has a complete parabolic reflector surface 121. Thus, the plurality of reflectors 12 can reflect not only the light beams emitted by the plurality of light sources 13 The approximately parallel beam also allows the arrangement of the plurality of beams to form a light field having a better light intensity distribution, so that the vehicle lamp 10 can have a better illumination effect. Moreover, since the first surface 111 is provided with a highly reflective material, the light beam scattered or reflected to the first surface 111 can be reflected, so that the light utilization efficiency of the complex light source 13 can be improved, and the illumination intensity of the lamp 10 can be further increased.

Of course, the lamp 10 can include other numbers of light sources 13 and other numbers of reflectors 12 in addition to 20 light sources 13 and 20 reflectors 12 as shown in this embodiment. Moreover, the plurality of reflectors 12 can be arranged in a circle or other number of concentric circles in addition to being arranged as two concentric circles as shown in this embodiment, and only the lamp 10 needs to have better light. A strong distribution of the light field can be.

In addition, in addition to the reflector 12 as shown in this embodiment, the reflector 12 may be a prism, an elliptical cylinder, or the like, or even an irregularly shaped cylinder, and only each reflector 12 is required. A complete parabolic reflecting surface 121, and the base 11 has a receiving hole 110 corresponding thereto.

Referring to FIG. 3 and FIG. 4 together, the lamp 20 provided in the second embodiment of the present invention is substantially the same as the lamp 10 of the first embodiment, except that the cross-sectional shape of the base 21 is approximately The rectangular end faces, and the end faces 222 of the plurality of reflectors 22 are connected to the first surface 211 of the base 21. That is, the plurality of reflectors 22 are protruded from the first surface 211 of the base 21, and the base 21 does not need to open a plurality of receiving holes for receiving the reflector 22.

Of course, the cross-sectional shape of the susceptor 21 may have other shapes such as an elliptical shape, a rhombus shape, or the like in addition to the circular shape as shown in the first embodiment and the rectangular shape as shown in the second embodiment.

In the lamp of the technical solution, the plurality of reflectors are arranged around, and each of the reflectors has a complete parabolic reflecting surface, so that the plurality of reflectors can not only reflect the beams emitted by the plurality of light sources into approximately parallel beams. The arrangement of the plurality of beams can also form a light field with a better light intensity distribution, so that the lamp can have better illumination effect, which helps to ensure the safety of the vehicle and the safety of the driver.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

20‧‧‧ headlights

21‧‧‧Base

Claims (10)

A vehicle lamp includes a plurality of light sources, a plurality of reflectors, and a base for setting a plurality of reflectors. One of the plurality of reflectors is disposed in the middle of the base, and the remaining reflectors are arranged around the reflector located in the middle of the base. Each of the reflectors has a reflecting surface, the reflecting surface is a paraboloid, and the plurality of light sources are respectively disposed on the optical axis of the plurality of reflecting surfaces, and the lamp further comprises a protective cover matched with the base, the protective cover including the transparent portion And a connecting portion, the transparent portion is opposite to the plurality of light sources and the plurality of reflectors, and is configured to transmit the light emitted by the plurality of light sources and the light reflected by the plurality of reflectors, wherein the connecting portion is configured to connect the light transmitting portion and the base. The vehicle lamp of claim 1, wherein the plurality of light sources are in one-to-one correspondence with the plurality of reflectors, and the plurality of light sources are respectively disposed at the focus of the plurality of reflecting surfaces. The vehicle lamp of claim 1, wherein the reflector has a diameter of 10 to 20 mm, and the base has a diameter of 60 to 120 mm. The vehicular lamp of claim 1, wherein the central axis of the reflector disposed in the middle of the pedestal coincides with the central axis of the pedestal, and the remaining reflectors are arranged in a reflector located at the middle of the pedestal. The plural of the center is on the concentric circle. The vehicular lamp of claim 4, wherein the number of the reflectors is 20, and the seven reflectors are arranged on a first circle centered on the reflector in the middle of the pedestal, and 12 reflectors are arranged. The second circle is centered on the reflector in the middle of the base, and the first circle is in the second circle. The vehicular lamp of claim 1, wherein the pedestal has a plurality of receiving holes corresponding to the reflectors, and the plurality of receiving holes are for receiving the plurality of reflectors. The vehicular lamp of claim 6, wherein the pedestal has a first surface adjacent to the light source, the first surface being coupled to a reflective surface of the plurality of reflectors, the first surface being provided with a reflective material. The vehicle lamp of claim 1, wherein the plurality of reflectors further have an end surface opposite to the reflecting surface, and the plurality of end faces are in contact with the base. The vehicle lamp of claim 1, wherein the plurality of reflectors are each provided with a through hole, and the plurality of light sources are respectively disposed in one of the through holes of the plurality of reflectors on a side close to the reflecting surface. The vehicular lamp of claim 1, wherein any one of the cross sections of the reflecting surface is circular.