KR102429064B1 - High mounted stop lamp for vehicle using temperature difference and vehicle equipping thereof - Google Patents

Abstract

The present invention relates to a high-mounted stop lamp for a vehicle using a temperature difference and a vehicle equipped therewith. The high-mounted stop lamp for a vehicle using a temperature difference according to an embodiment of the present invention is formed by assembling an outer housing and an outer cover. a base member for forming a height in a space on a path through which light passes; a plurality of heating wires embedded along the longitudinal direction of the base member to heat the air in the formed internal space; and a light source for forming a path of light along the longitudinal direction of the base member.

Description

HIGH MOUNTED STOP LAMP FOR VEHICLE USING TEMPERATURE DIFFERENCE AND VEHICLE EQUIPPING THEREOF

The present invention relates to a high-mounted stop lamp for a vehicle using a temperature difference and a vehicle equipped therewith, and more particularly, to the driver's choice by using the refractive index of the air layer that changes as a temperature difference of the air layer occurs in the lamp interior space. It relates to a high-mounted stop lamp for a vehicle using a temperature difference and a vehicle equipped therewith for providing a three-dimensional variable lighting image as well as a slimmed lamp structure by realizing various optical images according to the present invention.

In general, vehicle lamps can be largely divided into lighting, display, and signal.

The lighting lamp includes a headlamp that illuminates the front area of the vehicle, a fog lamp that illuminates the rear area when reversing, and a fog lamp used when passing through a rain or snowy or foggy area, and an interior light for lighting inside the vehicle.

In addition, the display lamp includes a width and height lamp indicating the width and height of the vehicle body, a tail lamp indicating that the vehicle is rearward, a license lamp illuminating a license plate, and a parking lamp indicating that the vehicle is being parked.

In addition, the signal lamp includes a red brake light that is automatically turned on in conjunction with the main braking brake, a direction indicator light notifying an external vehicle of its turning direction, and an emergency light used in an emergency or warning.

However, in some vehicles, a stop lamp separate from the brake lamp is installed and used in order to more clearly transmit the braking state to a vehicle following the rear.

Recently, most passenger vehicles use a combination lamp in which a reversing light, a brake light, and a turn indicator light are integrally configured in one case.

High Mounted Stop Lamp (HMSL) refers to an auxiliary brake light attached to a high place in addition to the stop light installed above the bumper. is attached to the top of the rear window of the

1 is a view showing a structure for mounting a conventional high-mounted stop lamp.

Referring to FIG. 1 , the high-mounted stop lamp 1 is installed externally on the rear side of the vehicle, and includes a housing 10 , a light source 20 , a lens 30 , and a watertight pad 40 .

In this high-mounted stop lamp 1, along with the brake light function of the rear combination lamp, the light emitted from the light source 20 moves to the opening area of the front lens 30 and tells the vehicle behind that the current driver is stepping on the brake. indicates the status.

The external high-mounted stop lamp 1 requires watertight spaces a1 and a2 for mounting the watertight pad 40 in order to prevent water from entering between the vehicle panel 2 and the lens 30 . Here, the watertight spaces a1 and a2 are provided with a space of about 5 mm on each of the upper and lower sides. These watertight spaces a1 and a2 become dummy spaces through which the light emitted from the light source 20 does not pass.

In addition, the external high-mounted stop lamp 1 requires lens housing fusion spaces b1 and b2 for fusing the lens 20 to the housing 10 . Similarly, the lens housing fusion space b1 and b2 is provided as a space of about 5 mm on each of the upper and lower sides, and becomes a dummy space through which the light emitted from the light source 20 does not pass.

Accordingly, conventionally, a dummy space of about 10 mm is generated in each of the upper and lower sides by the watertight spaces a1 and a2 and the lens housing fusion spaces b1 and b2. Such a dummy space may look dark and unnecessary when observed from the outside, and thus may be a factor in reducing the marketability. That is, in the dummy space, when the angle at which the light emitted from the light source 20 can be irradiated to the rear of the vehicle is θ1, the actual irradiated angle is limited to θ2.

And, the light emitted from the light source 20 is observed only in a straight direction. Conventionally, the external high-mounted stop lamp 1 has manufacturing difficulties in that it is necessary to twist the optical path of the light source 20 to implement a separate optical image, and there is a limitation in that light loss occurs as the optical path is changed. there is

Therefore, the external high-mounted stop lamp needs to minimize the vertical size of the lens in order to minimize the dummy space, and it is necessary to prepare a method for implementing the external high-mounted stop lamp without changing the optical path in order to implement a separate optical image.

Republic of Korea Patent Publication No. 10-2005-0040135

An object of the present invention is to provide a three-dimensional variable lighting image as well as slimming by enabling various optical images to be implemented according to the driver's choice by using the refractive index of the air layer, which is changed by generating a temperature difference of the air layer in the lamp interior space. An object of the present invention is to provide a high-mounted stop lamp for a vehicle using a temperature difference, and a vehicle equipped with the same for providing a lamp structure.

A high-mounted stop lamp for a vehicle using a temperature difference according to an embodiment of the present invention includes: a base member for forming a height in a space on a path through which light passes in an inner space formed by assembling an outer housing and an outer cover; a plurality of heating wires embedded along the longitudinal direction of the base member to heat the air in the formed internal space; and a light source for forming a path of light along the longitudinal direction of the base member.

The outer cover may be a lens that irradiates the light generated by the light source to the outside.

The base member may be one in which a step or an inclination is formed along the width direction in order to divide the formed internal space into a step shape.

Each of the plurality of heating wires may have different heating temperatures.

The light source may be formed at one end of the base member.

According to one embodiment, the magnetic watertight pad for maintaining watertightness by mutual magnetic force when assembling the outer housing to the vehicle panel; may further include.

In addition, a vehicle equipped with a high-mounted stop lamp for a vehicle using a temperature difference according to an embodiment of the present invention includes a spoiler formed in the upper rear portion from the outside of the vehicle; and a high-mounted stop lamp mounted on the spoiler to be used as an auxiliary brake light of the vehicle, and to implement an optical image using the refractive index of the air layer that changes as a temperature difference of the air layer is generated in the space inside the lamp. can

The high-mounted stop lamp is a base for forming a height in a space on a path through which light passes in an internal space formed by assembling an external housing installed in the spoiler and an external cover irradiating the light of the optical image to the outside absence; a plurality of heating wires embedded along the longitudinal direction of the base member to heat the air in the formed internal space; and a light source for forming a path of light along the longitudinal direction of the base member.

The present invention can implement various optical images according to the driver's choice by using the refractive index of the air layer, which is changed as the temperature difference of the air layer is generated in the interior space of the lamp, thereby providing a three-dimensional variable lighting image as well as a slimmed lamp structure can be provided.

In addition, the present invention can minimize the dummy space in the external high-mounted stop lamp, and can be implemented without changing the optical path to implement a separate optical image.

In addition, the present invention can improve the marketability by variously realizing a three-dimensional optical image.

1 is a view showing a structure for mounting a conventional high-mounted stop lamp;
2 is a view showing a high-mounted stop lamp for a vehicle using a temperature difference according to an embodiment of the present invention;
3A and 3B are views for explaining a change in the refractive index of light according to a temperature difference;
Figure 3c is a view for explaining the heat resistance analysis results according to the temperature difference;
4 is a view showing a simulation verification result for a multi-stage distribution of temperature;
5 is a view showing the size of a three-dimensional optical image;
6 is a view showing a magnetic watertight pad.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, detailed descriptions of well-known functions or configurations that may obscure the gist of the present invention in the following description and accompanying drawings will be omitted. In addition, it should be noted that throughout the drawings, the same components are denoted by the same reference numerals as much as possible.

The terms or words used in the present specification and claims described below should not be construed as being limited to conventional or dictionary meanings, and the inventor shall appropriately define his or her invention in terms of the best way to describe it. It should be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle that it can be done.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all of the technical spirit of the present invention. It should be understood that there may be equivalents and variations.

In the accompanying drawings, some components are exaggerated, omitted, or schematically illustrated, and the size of each component does not fully reflect the actual size. The present invention is not limited by the relative size or spacing drawn in the accompanying drawings.

In the entire specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated. In addition, when a part is said to be "connected" with another part, it includes not only the case of being "directly connected", but also the case of being "electrically connected" with another element interposed therebetween.

The singular expression includes the plural expression unless the context clearly dictates otherwise. Terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification is present, and includes one or more other features, number, or step. , it should be understood that it does not preclude in advance the possibility of the presence or addition of an operation, component, part, or combination thereof.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the embodiments of the present invention. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

2 is a view showing a high-mounted stop lamp for a vehicle using a temperature difference according to an embodiment of the present invention.

As shown in FIG. 2 , a high-mounted stop lamp for a vehicle using a temperature difference according to an embodiment of the present invention (hereinafter referred to as a 'high-mounted stop lamp', 100) generates a temperature difference in the air layer in the lamp interior space. By using the refractive index of the air layer, which changes according to the temperature, various optical images can be implemented according to the driver's choice, thereby providing a three-dimensional variable lighting image and a slimmer lamp structure. Here, the rear of the vehicle is in the y-axis direction.

The high-mounted stop lamp 100 includes an outer housing 110 , an outer cover 120 , a base member 130 , a plurality of heating wires 140 , and a light source 150 .

The outer housing 110 has a predetermined fastening structure (eg, a bolt-nut fastening structure, a screw fastening structure, a riveting fastening structure, etc.) that can be installed on a spoiler installed on the rear upper part of the vehicle.

In addition, the outer housing 110 accommodates the base member 130 on which the plurality of heating wires 140 and the light source 150 are mounted in the inner space formed through assembly with the outer cover 120 . At this time, each of the outer housing 110 and the outer cover 120 has a locking jaw and a locking groove, which can be assembled by fitting, and a predetermined fastening method (eg, bolt-nut fastening structure, screw fastening structure, rivet fastening structure, etc.) may be applied.

Accordingly, the high-mounted stop lamp 100 is assembled by assembling the base member 130 on which the plurality of heating wires 140 and the light source 150 are mounted on the outer housing 110 and then covering the outer cover 120 to assemble it. can be manufactured. Here, the inner space formed by the assembly of the outer housing 110 and the outer cover 120 corresponds to a space on a path through which the light generated by the light source 150 passes.

Meanwhile, the outer housing 110 may be connected to a wiring line (not shown) for supplying power or transmitting a control signal to the plurality of heating wires 140 and the light source 150 .

The outer cover 120 is a lens capable of irradiating the light generated by the light source 150 to the outside, and is made in red to indicate a state in which the brake is pressed by the driver. This outer cover 120 may be formed on the inner surface of the pattern in which the light generated by the light source 150 can be easily seen from the rear of the vehicle.

Here, the outer cover 120 may be made of polycarbonate (PC) or polymethylmethacrylate (PMMA) material.

The base member 130 forms a height difference of the space on the path through which light passes. To this end, the base member 130 may be formed with a step or an inclination.

First, the base member 130 is formed with a step in the width direction (y-axis direction) in order to divide the space on the path through which light passes in a step shape, and is composed of a plurality of surfaces.

In the base member 130 , a plurality of heating wires 140 are embedded in a plurality of surfaces formed with a step difference, respectively. Here, for convenience of description, a case in which the first heating wire 141, the second heating wire 142, and the third heating wire 143 are embedded in the base member 130 is shown, and if necessary, the heating wire embedded in the base member 130 is You can adjust the number.

Each of the plurality of heating wires 140 is embedded along the longitudinal direction of the base member 130 to heat the air in the internal space.

Here, each of the plurality of heating wires 140 may have a different heating temperature. That is, each surface of the base member 130 in which each of the plurality of heating wires 140 is embedded, a temperature difference is generated according to different heating temperatures of the plurality of heating wires 140 . Through this, the temperature of the air layer in the inner space formed by the assembly of the outer housing 110 and the outer cover 120 is non-uniform, that is, a temperature difference exists.

As such, the light generated by the light source 150 passes through a space with a temperature difference in the air layer. For this, reference will be made to FIGS. 3A and 3B, which will be described later.

Next, the base member 130 may form a straight or curved inclined surface along the width direction. A detailed description thereof will be omitted because it can be easily understood by those of ordinary skill in the art.

As described above, since the base member 130 is formed with a step or a slope along the width direction, the flow of air in the internal space is not immediately mixed, and a non-uniform state of the air layer temperature can be maintained to some extent.

The light source 150 is formed at one end of the base member 130 to form a path of light along the longitudinal direction (x-axis direction) of the base member 130 . Here, the light source 150 may apply a laser that is easy to implement a slimmed three-dimensional optical image. In this case, the light source 150 may adjust the irradiation angle of the laser light by checking the lit image.

3A and 3B are views for explaining a change in the refractive index of light according to a temperature difference, and FIG. 3C is a view for explaining a heat resistance analysis result according to a temperature difference.

3A and 3B, the upper part corresponds to the upper part and the lower part corresponds to the lower part.

First, FIG. 3A shows a case in which a heating wire (high temperature) is installed only at the upper end, and the upper air layer has a high temperature and thus has a low refractive index, and the lower air layer has a low temperature and thus has a high refractive index. That is, when the temperature of the air layer increases, the refractive index decreases, and when the temperature decreases, the refractive index increases. Here, the upper air layer has a temperature of 40 degrees and a refractive index of 1.0, and the lower air layer has a temperature of 30 degrees and a refractive index of 1.2.

And, FIG. 3B shows a case in which a hot wire (high temperature) and a hot wire (low temperature) are installed at the upper end, the lower hot wire has a low temperature, and the upper hot wire has a high temperature. Here, the side close to the uppermost hot wire has a higher temperature, so the refractive index is lowered, and as it goes down, the temperature gradually decreases and the refractive index also rises.

Since the lower heating wire has a lower temperature than the upper heating wire, a relatively cooling effect can be expected. In this case, since the temperature difference between the top and bottom becomes larger, the path change of the light occurs more rapidly, showing an optical image different from that of FIG. 3A . That is, it can be seen that the frequency of bending of the optical image of FIG. 3B is greater than that of the optical image of FIG. 3A.

As shown in FIGS. 3A and 3B , it can be seen that the path of light in a predetermined internal space can be changed because the refractive index of light is changed according to the temperature difference between the upper end and the lower end. Through this, the light path does not need to set a separate optical path by using the temperature difference of the air layer, and is realized as a natural optical image without loss of light.

Figure 3c shows the heat resistance analysis result when a hot wire (high temperature) is applied to the top. The upper part is 65 °C, the lower part is 10 °C. 3c shows that only a high-temperature heating wire is applied only to the top without a separate layer division, but it can be seen that a certain stage shape is detailed. That is, in the actual case, looking through the heat resistance analysis result of FIG. 3C , it can be confirmed that the temperature difference is finely separated from the upper end to the lower end, rather than being clearly divided into three stages as shown in FIGS. 3A and 3B . As such, as the temperature increases, the refractive index approaches 1, and as the temperature decreases, it gradually moves away from 1.

4 is a diagram illustrating a simulation verification result for a multi-stage distribution of temperature.

Here, two-dimensional heat conduction analysis can be applied considering heat transfer in the x and y directions. Specifically, looking at the finite difference lattice system considered in the two-dimensional Cartesian coordinate system using the two-dimensional heat conduction equation including heat generation, the second-order finite difference equations for x and y are substituted into the two-dimensional heat conduction equation to reduce heat generation. A finite difference equation of the two-dimensional heat conduction equation can be obtained.

A finite difference equation of a two-dimensional heat conduction equation including heat generation can be used when analyzing the spread of temperature when heat generation is included.

A finite difference equation of a two-dimensional heat conduction equation including heat generation can be simply changed as shown in Equation 1 below, assuming that the lengths of x and y are set to the same variable and there is no internal heat value.

Simulation verification for the multi-stage distribution of temperature in FIG. 4 is calculated by setting the upper temperature to 100 °C and the lower temperature to 200 °C, and setting the lengths of x and y to 4 cm using Equation 1 above. shows a result. In this case, simulation verification was performed using MATLAB.

Referring to FIG. 4 , it can be seen that the temperature difference between the upper and lower ends generates a multi-stage distribution of temperatures, and the interval of the multi-stage distribution is approximately 2 mm to 5 mm. In this way, when the heating wire is formed at both ends, moisture does not occur.

5 is a diagram illustrating the size of a three-dimensional optical image.

Referring to FIG. 5 , the three-dimensional optical image is a three-dimensional geometric optical image in which a top view and a side view are overlapped due to multi-stage distribution of temperature, and may be expressed as an isometric view. have.

Looking at the simulation result of FIG. 4 , the width of the laser light source is 4 cm in the top view and the side view, respectively, and accordingly, the width and length of the laser light source are 4 cm in the isometric view. The length in the traveling direction of the laser light source in the isometric view may be selected as a free length.

Such a three-dimensional optical image may be implemented in various ways according to the temperature control of the heating wire. Accordingly, the driver may implement various three-dimensional optical images by controlling the temperature of the heating wire.

6 is a view showing a magnetic watertight pad.

Referring to FIG. 6 , when the outer housing 110 is assembled to the vehicle panel, it may be mounted on the vehicle panel using a magnetic watertight pad 115 to remove a separate watertight space.

Here, the outer housing 110 is provided with a first magnetic watertight pad 115a at an assembly site in contact with the vehicle panel, and similarly, the vehicle panel has a second magnet watertight pad 115b at an assembling site contacting the outer housing 110 . is provided That is, since the first magnetic watertight pad 115a and the second magnetic watertight pad 115b are bonded by mutual magnetic force, a watertight effect can be expected.

In this way, when the external housing 110 and the vehicle panel are mutually assembled using the magnetic watertight pad 115, a separate free space for inserting the existing watertight pad (the lens housing fusion space, the watertight space, etc.) is Since it is not necessary, it is possible to save and slim the upper and lower dummy space (approximately 10 mm at the top and bottom).

The magnetic watertight pad 115 may also be used in assembly between the outer housing 110 and the outer cover 120 . Since a detailed description thereof can be easily understood by those skilled in the art, it will be omitted.

Although the foregoing description has focused on novel features of the invention as applied to various embodiments, those skilled in the art will recognize the apparatus and method described above without departing from the scope of the invention. It will be understood that various deletions, substitutions, and changes are possible in the form and details of Accordingly, the scope of the invention is defined by the appended claims rather than by the above description. All modifications within the scope of equivalents of the claims are included in the scope of the present invention.

110: outer housing 115: magnetic watertight pad
115a: first magnetic watertight pad 115b: second magnetic watertight pad
120: outer cover 130: base member
140: a plurality of hot wires 141: a first hot wire
142: second hot wire 143: third hot wire
150: light source

Claims (8)

In the inner space formed by the assembly of the outer housing and the outer cover, the base member for forming a height in the space on the path through which light;
a plurality of heating wires embedded along the longitudinal direction of the base member to heat the air in the formed internal space; and
a light source for forming a path of light along the longitudinal direction of the base member;
In a high-mounted stop lamp for a vehicle using a temperature difference comprising:
Each of the plurality of hot wires,
A high-mounted stop lamp for a vehicle using a temperature difference with different heating temperatures.
The method of claim 1,
the outer cover,
A high-mounted stop lamp for a vehicle using a temperature difference, which is a lens that irradiates the light generated by the light source to the outside.
The method of claim 1,
The base member is
A high-mounted stop lamp for a vehicle using a temperature difference in which a step or a slope is formed along the width direction in order to divide the formed internal space into a step shape.
delete The method of claim 1,
The light source is
A high-mounted stop lamp for a vehicle using a temperature difference that is formed at one end of the base member.
The method of claim 1,
a magnetic watertight pad for maintaining watertightness by mutual magnetic force when assembling the outer housing to a vehicle panel;
A high-mounted stop lamp for a vehicle using a temperature difference further comprising a.
a spoiler formed in the upper rear portion of the vehicle outside; and
a high-mounted stop lamp mounted on the spoiler to be used as an auxiliary brake light of the vehicle, and to implement an optical image using the refractive index of the air layer that changes as a temperature difference of the air layer occurs in the lamp interior space;
A vehicle equipped with a high-mounted stop lamp for a vehicle using a temperature difference including
8. The method of claim 7,
The high-mounted stop lamp,
a base member for forming a height in a space on a path through which light passes in an inner space formed by assembling an outer housing installed in the spoiler and an outer cover irradiating the light of the optical image to the outside;
a plurality of heating wires embedded along the longitudinal direction of the base member to heat the air in the formed internal space; and
a light source for forming a path of light along the longitudinal direction of the base member;
A vehicle equipped with a high-mounted stop lamp for a vehicle using a temperature difference including

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