CN111520685A

CN111520685A - Lamp device

Info

Publication number: CN111520685A
Application number: CN201910039072.XA
Authority: CN
Inventors: 林明峰; 林男明
Original assignee: TYC Brother Industrial Co Ltd
Current assignee: TYC Brother Industrial Co Ltd
Priority date: 2019-01-16
Filing date: 2019-01-16
Publication date: 2020-08-11

Abstract

A lamp device comprises a reflection unit and a light-emitting unit. The reflection unit comprises a first reflection group and a second reflection group which can reflect light to the other one. The reflectance of the first reflection group to light with a wavelength of 550nm to 800nm is substantially 70% and the reflectance of the second reflection group to light with a wavelength of 460nm to 700nm is substantially 50% -75%. The light emitting unit can generate light projected to the first reflection group or the second reflection group. This first reflection group can slow down the decay rate of light energy and can improve the formation of image quantity of virtual image, improves the not enough problem of virtual image formation of image quantity, and this first reflection group is all good to the reflection effect of the visible light of different colours with this second reflection group, and application scope is wide.

Description

Lamp device

Technical Field

The present invention relates to a lamp device for a vehicle, and more particularly to a lamp device suitable for mounting on the rear end of a vehicle such as an automobile or a locomotive.

Background

Referring to fig. 1 and 2, a conventional lamp device, which is a tail lamp installed at the rear end of a vehicle, can project light backward, and includes a lamp socket 11, a first support member 12 and a reflection set 13 installed on the lamp socket 11 and arranged in a front-to-back manner, a light emitting unit 14 embedded in the first support member 12, and a lamp cover 15 assembled to the lamp socket 11 and covering the rear.

The first support member 12 is made of steel and includes a reflective surface 121 polished to have a mirror-like effect. The reflection factor of the reflection surface 121 with respect to visible light is less than 60%. The reflective assembly 13 includes a semi-reflective film 131, and a second supporting member 132 made of a transparent material and disposed on the semi-reflective film 131. The semi-reflective film 131 has a reflectance of about 40% to 80% for red visible light having a wavelength of about 575nm to 675 nm. The light emitting unit 14 includes a plurality of light emitting elements 141 that are disposed in the first supporting member 12 in a ring and can generate red light.

The luminaire device is capable of producing a light effect as shown in fig. 2. The outermost circle of lamp spot circles is a real image directly generated by the light emitting element 141, and the other inner circles of lamp spot circles are virtual images generated by the cooperation of the reflective surface 121 and the semi-reflective film 131. The real image and the virtual image can be integrally matched to present a three-dimensional light effect like a tunnel.

Although the lighting device can generate a three-dimensional lighting effect, the defect in the art is that the number of virtual images is insufficient, so that a dark area 16 with a large area is still present in the lighting effect to be further improved. In addition, although the semi-reflective film 131 can generate a semi-reflective effect for red visible light, it has a problem that the semi-reflective effect is not good for other colors of light, so that the suitable field area is limited, and needs to be improved.

Disclosure of Invention

It is an object of the present invention to provide a luminaire arrangement which overcomes at least one of the disadvantages of the prior art.

The invention relates to a lamp device, which comprises a reflection unit and a light-emitting unit, wherein the reflection unit comprises a first reflection group and a second reflection group, the first reflection group can reflect light to the second reflection group, the second reflection group can partially reflect the light to the first reflection group, the light-emitting unit can generate the light projected to the first reflection group or the second reflection group, the reflectivity of the first reflection group to the light with the wavelength of 550nm to 800nm is more than 70%, and the reflectivity of the second reflection group to the light with the wavelength of 460nm to 700nm is 50% -75%.

The first reflection group of the lamp device comprises a first supporting piece and an aluminum film which is evaporated on the first supporting piece and is positioned between the first supporting piece and the second reflection group, and the reflectivity of the aluminum film to light with the wavelength of 550nm to 800nm is substantially more than 85%.

The lamp device comprises a first reflection group, a second reflection group and a first support, wherein the first reflection group further comprises at least one coating which is separated from the first support through the aluminum film, the at least one coating is positioned between the aluminum film and the second reflection group and comprises a first coating facing the aluminum film and second coatings which are respectively positioned on two opposite sides of the first coating with the aluminum film, the first coating is made of silicon dioxide, the refractive index is 1.45, the thickness of the first coating is 107.2nm, the second coating is made of titanium dioxide, the refractive index is 2.28, and the thickness of the second coating is 68.4 nm.

In the lamp device of the present invention, the first reflective set includes a plurality of layers of the coating films sequentially stacked in a direction away from the first supporting member.

In the lamp device of the present invention, the first reflection group includes a first aluminum support member, the first aluminum support member includes a reflection surface polished and capable of reflecting light toward the second reflection group, and a reflectance of the reflection surface with respect to light having a wavelength of 550nm to 800nm is substantially 70% or more.

The second reflection group of the lamp device comprises a second supporting piece capable of transmitting light and a reflection film which is evaporated on the second supporting piece and is spaced from the first reflection group, and the reflectivity of the reflection film to light with the wavelength of 460nm to 700nm is substantially 50% to 75%.

The lamp device of the invention is characterized in that the reflective film comprises a first coating abutting against the second support, and a second coating, a third coating, a fourth coating, a fifth coating, a sixth coating, a seventh coating, an eighth coating and a ninth coating which are spaced from the second support and sequentially stacked along the direction far away from the second support, wherein the first coating, the third coating, the fifth coating, the seventh coating and the ninth coating are made of titanium dioxide and have a refractive index of 2.28, the second coating, the fourth coating, the sixth coating and the eighth coating are made of silicon dioxide and have a refractive index of 1.45, the first coating has a thickness of 28.6nm, the second coating has a thickness of 19.5nm, the third coating has a thickness of 64.1nm, the fourth coating has a thickness of 165.0nm, the fifth coating has a thickness of 102.6nm, the sixth coating has a thickness of 94.4nm, and the seventh coating has a thickness of 60.8nm, the thickness of the eighth plating layer was 96.7nm, and the thickness of the ninth plating layer was 60.0 nm.

The lamp device has the following effects: this first reflection group can slow down the decay rate of light energy, therefore can cooperate with this second reflection group and improve the formation of image quantity of virtual image to solve the too big problem of light effect dark space, and this first reflection group is all good with this second reflection group in the effect of the wide total reflection of visible light on a large scale/half reflection, can also solve the lamps and lanterns device in the past and use the restricted problem in field.

Drawings

Other features and effects of the present invention will become apparent from the following detailed description of the embodiments with reference to the accompanying drawings, in which:

FIG. 1 is an exploded perspective view illustrating a prior art lamp assembly;

FIG. 2 is a photograph illustrating the lighting effect that the lighting device can produce;

FIG. 3 is an exploded perspective view illustrating one embodiment 1 of the lamp device of the present invention;

FIG. 4 is a combined sectional view illustrating the relative assembly of the elements of this embodiment 1;

FIG. 5 is a fragmentary sectional view taken in combination to show an enlarged view of the layered structure of a second support member and a reflective film;

FIG. 6 is a graph showing the reflectance of an aluminum film of example 1 with respect to light of different wavelengths;

FIG. 7 is a graph showing the reflectance of a reflective film of example 1 with respect to wavelength of light incident at different angles;

FIG. 8 is a photograph illustrating the light effect produced by the embodiment 1;

FIG. 9 is a fragmentary sectional view showing in enlarged scale the layered relationship of the aluminum film and a set of coatings of one embodiment 2 of the lamp device of the present invention;

FIG. 10 is a fragmentary sectional view showing in enlarged scale the layered relationship of the aluminum film and two coating films of one embodiment 3 of the lamp device of the present invention;

FIG. 11 is a fragmentary sectional view showing the layered relationship of the aluminum film and three sets of coatings of one embodiment 4 of the lamp device of the present invention;

FIG. 12 is a graph showing the reflectance with respect to the wavelength of light incident at different angles for the film groups of examples 2 to 4, which are composed of the aluminum film and the plating film; and

fig. 13 is a fragmentary sectional view of a combination illustrating a first reflector set of one embodiment 5 of the lamp device of the present invention.

Detailed Description

In the following description, similar or identical elements will be denoted by the same reference numerals.

EXAMPLE 1

Referring to fig. 3 to 5, an embodiment 1 of the lamp device of the present invention can generate a three-dimensional lighting effect by using multiple virtual images, and is a tail light of an automobile, but in other embodiments of the present invention, can also be a tail light of a motorcycle. Since the present embodiment 1 is a tail light, the light generated by the present embodiment 1 is projected toward the rear. The rear is the right of the drawing in fig. 3 and the lower of the drawing in fig. 4.

The embodiment 1 includes a lamp socket 21 capable of being assembled on the vehicle, a lampshade 23 disposed on the lamp socket 21 and cooperating with the lamp socket 21 to define a lamp space 22, a reflecting unit 3 assembled on the lamp socket 21 and located in the lamp space 22, and a light emitting unit 4 disposed on the reflecting unit 3. Since the design techniques of the lamp holder 21 and the lamp cover 23 are common knowledge, the description thereof is omitted here.

The reflection unit 3 includes a first reflection set 31 and a second reflection set 32, which are assembled to the lamp socket 21 and arranged in a front-to-back manner.

The first reflection set 31 includes a first supporting member 33 substantially in the shape of a quadrilateral plate, and an aluminum film 34 formed by evaporation on the first supporting member 33 and located between the first supporting member 33 and the second reflection set 32.

The aluminum film 34 is formed under a pressure of 10 deg.C^-5torr and the temperature is 60 ℃, aluminum is taken as a target material, and the plating rate is per second

Is formed on the first support member 33 by electron beam evaporation. The reflectance of the aluminum film 34 for light of different wavelengths is shown in fig. 6. As can be seen from fig. 6, the aluminum film 34 has a reflectance of about 85% or more with respect to light having an incident angle of 0 degree (i.e., normal incidence) and a wavelength of 550nm to 800 nm. Wherein the average reflectance is calculated to be about 90.8% for red visible light having a wavelength of 575nm to 675 nm.

The second reflection set 32 includes a transparent second support 35, a transparent mask 36 covering the back of the second support 35, and a reflection film 37 formed on the second support 35 and located between the second support 35 and the mask 36 by evaporation.

The second supporting member 35 is made of transparent acrylic material, and includes a substantially quadrangular plate 351 supporting the reflective film 37, and a supporting portion 352 extending from the periphery of the plate 351 to the socket 21 and assembled to the socket 21. The plate portion 351 includes a setting surface 353 on which the reflective film 37 is set, and a concave transmission surface 354 (a concave shape is not illustrated) opposite to the setting surface 353 and facing the first reflection group 31 and being concave toward the setting surface 353. The concave transparent surface 354 has a concave shape with an optical design, which can vary in different embodiments depending on the imaging requirements.

The mask 36 has substantially the same shape as the second support 35, but has a size slightly larger than the second support 35, so as to cover behind the second support 35 and the reflective film 37 and protect the second support 35 and the reflective film 37.

The reflective film 37 is partially transparent to light, is spaced apart from the first reflective layer 31, and includes a first plating layer 371 formed on the second support 35, and a second plating layer 372, a third plating layer 373, a fourth plating layer 374, a fifth plating layer 375, a sixth plating layer 376, a seventh plating layer 377, an eighth plating layer 378, and a ninth plating layer 379 sequentially stacked in a direction away from the second support 35 (i.e., sequentially stacked from front to back).

The laminated structure of the reflective film 37 is prepared by using silicon dioxide or titanium dioxide as a target material under the environmental conditions of 10-5torr of pressure and 80 ℃ of temperature, and the plating rate is per second

The conditions (2) are those formed by electron beam evaporation.

The first, third, fifth, seventh and

fifth plating layers

371, 373, 375, 377 and 379 are made of titanium dioxide, and have a refractive index of 2.28. The second, fourth, sixth and

eighth plating layers

372, 374, 376 and 378 are made of silicon dioxide and have a refractive index of 1.45.

The thickness of the first plating layer 371 is 28.6nm, the thickness of the second plating layer 372 is 19.5nm, the thickness of the third plating layer 373 is 64.1nm, the thickness of the fourth plating layer 374 is 165.0nm, the thickness of the fifth plating layer 375 is 102.6nm, the thickness of the sixth plating layer 376 is 94.4nm, the thickness of the seventh plating layer 377 is 60.8nm, the thickness of the eighth plating layer 378 is 96.71nm, and the thickness of the ninth plating layer 379 is 60.0 nm.

By supporting the reflective film 37 with a transparent substrate, the reflective film 37 can be plotted by the relationship between the reflection rate of the light and the wavelength thereof for the light with different wavelengths and the incident angles of 0 degree, 30 degrees and 60 degrees, respectively, to obtain fig. 7. As can be seen from fig. 7, the reflection film 37 has a reflectance of about 50% to 75% with respect to light having a wavelength of 460nm to 700nm, and has a good and uniform semi-reflection effect.

Wherein, for the red visible light with the wavelength of 575nm to 675nm, the calculated average reflectivity is 68.2%, 69.1% and 63.4% when the incident angle is 0 degree, 30 degrees and 60 degrees, respectively.

The light emitting unit 4 includes a plurality of light emitting devices 41 that are embedded in the outer ring of the first supporting member 33 in a circle and can emit red visible light with a wavelength of 575-675 nm. Each light emitting device 41 is an LED light emitting device 41 capable of generating light projected to the first reflection set 31 or the second reflection set 32.

Referring to fig. 3, 4 and 8, in the operation of the present embodiment 1, the light effect as shown in fig. 8 can be generated. The light generated by the light emitting device 41 partially passes through the reflective film 37 of the second reflective set 32 and is projected into the eyes of the user, so as to generate a circle of light spot real images at the outermost side, and the other part of the light is reflected by the reflective film 37, reflected by the aluminum film 34 to the reflective film 37, partially projected into the eyes of the user again and partially projected by the reflective film 37 again. After the light is reflected forward and projected to the eyes of the user in the manner described above, a plurality of circles of lamp light point circle virtual images positioned at the inner side can be formed.

As can be seen from a comparison between fig. 8 of embodiment 1 and fig. 2 of the prior art, in this embodiment 1, since the reflectivity of the aluminum film 34 for wavelengths from 550nm to 800nm is about 85% or more (actually 90.8%), which is higher than the reflectivity of the conventional lamp device which is less than 60%, the energy decay rate of light can be effectively reduced, so that the virtual image of the lamp spot circle with more turns can be generated in this embodiment 1 compared with the conventional lamp device, and the area of the dark area 5 where the virtual image does not exist is relatively small. That is, embodiment 1 can produce better light effect than the past lamps and lanterns device, has warning effect better to can improve driving safety's characteristics.

In addition, since the reflective film 37 of the present embodiment 1 can have a reflectance of 50% to 75% with respect to light having a wavelength of 460nm to 700nm, if the light emitting element 41 is replaced by the light emitting element 41 capable of generating warning light having a different color, such as yellow, orange or blue, the present embodiment can also generate good lighting effects having different colors as shown in fig. 8. Further, as can be seen from fig. 7, the reflectance values of the reflective film 37 are also substantially uniform for light having a wavelength of 460nm to 700nm, and the stability of reflection is good for light having different wavelengths.

EXAMPLES 2 to 4

Referring to fig. 9 to 12, an embodiment 2 of the lamp device of the present invention is similar to the embodiment 1, except that the first reflection set 31 of the embodiment 2 further includes a plated film 38 spaced apart from the first support 33 by the aluminum film 34. The plating film 38 is formed on the aluminum film 34 and includes a first film 381 facing the aluminum film 34 and a second film 382 opposite to the first film 381 with respect to the aluminum film 34. The first film 381 is made of silicon dioxide, has a refractive index of 1.45, and has a thickness of 107.2 nm. The second film 382 is made of titanium dioxide, has a refractive index of 2.28, and has a thickness of 68.4 nm. An embodiment 3 and an embodiment 4 of the lamp device of the present invention are similar to the embodiment 2, except that the first reflective set 31 of the embodiment 3 comprises two plated films 38 (as shown in fig. 10) sequentially stacked along a direction away from the first supporting member 33, and the embodiment 4 comprises three plated films 38 (as shown in fig. 11) sequentially stacked along a direction away from the first supporting member 33.

Fig. 12 shows the reflectance of the aluminum film 34 and the plated film 38 of the

embodiments

2, 3, and 4 with respect to light with different wavelengths. As can be seen from fig. 12, the reflectance of the film groups of examples 2, 3, and 4 with respect to light having an incident angle of 0 degree (i.e., normal incidence) and a wavelength of 550nm to 800nm was 90% or more, which is better than 85% of example 1 including only the aluminum film 34. In the film groups of the

embodiments

2, 3 and 4, the average reflectivity of the red visible light with the wavelength of 575nm to 675nm is respectively improved to 96 percent and 98.2 percent and even reaches 99.2 percent by calculation, which is greatly better than 90.8 percent of the film group of the embodiment 1 with the pure aluminum film 34. Since the reflectivity of the

embodiments

2, 3 and 4 is better than that of the embodiment 1, the

embodiments

2, 3 and 4 can generate more virtual images and generate more stereoscopic and better lighting effect compared with the embodiment 1.

EXAMPLE 5

Referring to fig. 13, an embodiment 5 of the lamp device of the present invention is similar to the embodiment 1, except that the aluminum film 34 is omitted from the first reflective set 31, and the first supporting member 33 is made of aluminum and includes a reflective surface 331 polished and capable of reflecting light toward the second reflective set 32. Since the first support member 33 is made of aluminum and polished, the reflectance with respect to light having a wavelength of 550nm to 800nm can be substantially increased to about 72%, and the problem of the dark area 5 in which the number of virtual images is insufficient in the related art can be also improved due to the increased reflectance.

In summary, the lamp device of the present invention has the following effects: this first reflection group 31 can slow down the energy decay rate of light, therefore can cooperate with this second reflection group 32 and improve the formation of image quantity of virtual image, solves the too big problem of light effect dark space 5, and this first reflection group 31 is all good to the reflection of wavelength 550nm to 700 nm's light/half reflective effect with this second reflection group 32, can also solve the lamps and lanterns device in the past and use the restricted problem in field territory.

The above description is only an embodiment of the present invention, and the scope of the claims of the present invention is not limited thereto, and the equivalent modifications made by the contents of the claims and the description of the present invention are also intended to be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a lamp device, contains reflection unit to and luminous element, and this reflection unit includes first reflection group and second reflection group, and this first reflection group can be with light toward this second reflection group reflection, and this second reflection group can be with light part toward this first reflection group reflection, and this luminous element can produce the light of throwing toward this first reflection group or this second reflection group, its characterized in that: the reflectivity of the first reflection set to the light with the wavelength of 550nm to 800nm is more than 70%, and the reflectivity of the second reflection set to the light with the wavelength of 460nm to 700nm is 50% -75%.

2. The luminaire device of claim 1, wherein: the first reflection group comprises a first supporting piece and an aluminum film which is evaporated on the first supporting piece and is positioned between the first supporting piece and the second reflection group, and the reflectivity of the aluminum film to light with the wavelength of 550nm to 800nm is substantially more than 85%.

3. The luminaire device of claim 2, wherein: the first reflection group also comprises at least one coating film which is separated from the first support piece through the aluminum film, the at least one coating film is positioned between the aluminum film and the second reflection group and comprises a first film layer facing the aluminum film and second film layers which are respectively positioned on two opposite sides of the first film layer and the aluminum film, the first film layer is made of silicon dioxide, the refractive index is 1.45, the thickness is 107.2nm, the second film layer is made of titanium dioxide, the refractive index is 2.28, and the thickness is 68.4 nm.

4. The luminaire device of claim 3, wherein: the first reflection set comprises a plurality of layers of the coating films which are sequentially stacked along the direction far away from the first supporting piece.

5. The luminaire device of claim 1, wherein: the first reflection set comprises a first supporting piece made of aluminum, the first supporting piece comprises a reflection surface which is polished and can reflect light towards the second reflection set, and the reflectivity of the reflection surface to light with the wavelength of 550nm to 800nm is substantially more than 70%.

6. The luminaire device of claim 1, wherein: the second reflection set comprises a second support member capable of transmitting light and a reflection film which is evaporated on the second support member and is spaced from the first reflection set, and the reflectivity of the reflection film to the light with the wavelength of 460nm to 700nm is substantially 50% to 75%.

7. The luminaire device of claim 6, wherein: the reflecting film comprises a first coating abutting against the second support, and a second coating, a third coating, a fourth coating, a fifth coating, a sixth coating, a seventh coating, an eighth coating and a ninth coating which are sequentially stacked at intervals from the second support along a direction far away from the second support, wherein the first coating, the third coating, the fifth coating, the fourth coating, the fifth coating, the sixth coating, the seventh coating and the ninth coating are made of titanium dioxide and have a refractive index of 2.28, the second coating, the fourth coating, the sixth coating and the eighth coating are made of silicon dioxide and have a refractive index of 1.45, the first coating is 28.6nm in thickness, the second coating is 19.5nm in thickness, the third coating is 64.1nm in thickness, the fourth coating is 165.0nm in thickness, the fifth coating is 102.6nm in thickness, the sixth coating is 94.4nm in thickness, the seventh coating is 60.8nm in thickness, and the eighth coating is 96.7nm in thickness, the thickness of the ninth plating layer was 60.0 nm.