KR102688997B1 - Shield device of headlight for vehicle - Google Patents

Abstract

The present invention relates to a shield device that functions to reflect light emitted from an LED module and send it to the reflective surface of a lamp housing.
The present invention combines the LED of an LED module with a shield of a four-part reflective surface structure with a predetermined reflection angle, so that the light of the LED is first reflected through the shield and then illuminates the front of the vehicle through the reflective surface of the lamp housing, By implementing a new type of shield device that allows the light irradiated at this time to be irradiated in the form of a semi-high beam, the light can be irradiated upward when driving in low beam mode, thereby ensuring sufficient forward visibility, thereby promoting safe driving. Also, since the light is emitted in the form of a semi-high beam, a shielding device for automobile headlights is provided that can prevent inconveniences such as glare to other drivers or pedestrians.

Description

Shield device for automobile headlights {SHIELD DEVICE OF HEADLIGHT FOR VEHICLE}

The present invention relates to a shield device for an automobile headlight, and more specifically, to a shield device that functions to reflect light emitted from an LED module and send it to the reflective surface of a lamp housing.

In general, automobile headlights are lighting devices used to secure forward visibility not only at night but also when driving in bad weather such as foggy or rainy days.

For these automobile headlights, the brightness of the driving beam is specified to be at an appropriate level in accordance with KS standards and automobile safety standards rules, and in addition, the Automotive Lighting Safety Standards Act stipulates that the low beam must be within an irradiation range of less than 10 meters within 15 meters in front. It is stipulated that it must be possible to observe and confirm existing obstacles.

Such headlights have mainly been applied in the form of assembled lenses, bulbs, reflectors, etc., but in recent years, shield beam bulbs with an integrated structure are mainly used, and upper/lower headlights integrated headlights or upper headlights and Those with separate dipped headlights, one pair each on the left and right, are mainly used.

Recently, headlights using LED module light sources, which not only have excellent performance and long lifespan, but also have a low incidence of failure, are becoming increasingly popular.

In general, LED modules are widely used as display products for various electronic products because they show great advantages in processing speed, power consumption, and lifespan due to the characteristics of semiconductors.

Recently, as products with high brightness have been developed, they are gaining attention as light sources for advanced lighting.

In particular, lamps using LED modules are attracting attention as an efficient light source due to their lower power consumption compared to existing light bulbs. Not only can they be applied to a variety of fields because the LED elements themselves are capable of producing a variety of colors, but their durability is excellent, making replacement costs lower. It has the advantage of reducing management and maintenance costs.

Since these high-brightness LED modules generate very high heat when turned on, there are many difficulties in applying and designing them due to the high heating temperature. If proper heat dissipation is not achieved, the efficiency and durability of the LED modules rapidly decrease.

In order to solve the heat dissipation problem of such LED modules, most LED modules recently applied to automobile headlights are equipped with heat dissipation devices such as cooling fins and cooling fans.

Meanwhile, automobile headlights are operated in low beam mode (low beam mode) and high beam mode (high beam mode). Low beam mode is usually sufficient when driving in the city, and does not provide strong light, such as on dark nights or thick foggy days. Use high beam mode in situations where it is necessary.

Using high beam mode in this way improves the driver's field of vision and allows a better understanding of road conditions, but it must be used with caution as it can dazzle other drivers and pedestrians. For this reason, drivers must use it with caution except in special cases. Despite the inconvenience, most people use it in low beam mode.

Public Patent Publication No. 10-2006-0046626 Public Patent Publication No. 10-2015-0012026 Public Patent Publication No. 10-2022-0159636 Public Patent Publication No. 10-2023-0108745

Therefore, the present invention was developed with this in mind, by combining the LED of an LED module with a shield of a four-part reflective surface structure with a predetermined reflection angle, and after the light of the LED is first reflected through the shield, it is reflected in the lamp housing. By implementing a new type of shield device that illuminates the front of the vehicle through a reflective surface and allows the light to be irradiated in the form of a semi-high beam, upward irradiation of light is possible when driving in low beam mode, improving forward visibility. A shielding device for automobile headlights that can ensure safe driving by securing sufficient The purpose is to provide.

In order to achieve the above object, the shield device for automobile headlights provided by the present invention has the following features.

The shield device of the automobile headlight is a means installed on one side of the LED in the LED module of the automobile headlight to reflect light emitted from the LED, and includes a shield composed of a combination of a shield body and a shield reflector, and the shield The shield body is characterized by the formation of first to fourth reflective surfaces of a four-segment reflective surface structure that are inclined at different angles and are connected and combined in a lattice shape.

Here, the first to fourth reflective surfaces formed on the shield body of the shield may be inclined at an angle of 5 to 20 degrees with respect to the vertical plane.

In a preferred embodiment, the first reflecting surface of the shield body is laid 10° with respect to the vertical plane and twisted 10°, and the second reflecting surface is laid 10° with respect to the vertical plane and twisted 15°. The third reflective surface can be laid down 15° relative to the vertical plane and twisted 10°, and the fourth reflective surface can be laid down 15° relative to the vertical plane and twisted 15° at the same time.

In the shield device of such a headlight for an automobile, the shield body of the shield and the shield reflector have an integrated structure, and the shield reflector extends in front of the shield body and has an end bent into a spherical shape, and the shield reflector extends in front of the shield body. It is a structure in which the shield body is coupled and fixed to the screw hole formed in the LED bar of the LED module through a screw fastening structure, and at the same time, it is fixed by being inserted into the through hole formed in the LED bar using the pin on the bottom of the shield reflector. Can be installed.

In addition, the LED module consists of two LEDs installed at a distance from each other, and a shield is attached to one LED among the two LEDs, so the light emitted from one LED without a shield is directly exposed to the reflective surface of the lamp housing. A portion of the light irradiated from another LED with a shield may be reflected on the first to fourth reflective surfaces of the shield and then irradiated to the reflective surface of the lamp housing.

The shield device for automobile headlights provided by the present invention has the following effects.

First, by applying a shield with a four-segment reflective surface structure that assumes different inclined postures at a predetermined angle to the LED, it is possible to emit some light upward while maintaining the basic low beam state, thereby improving identification of surroundings such as road signs when driving. It can help improve performance and at the same time, it has the effect of not causing inconveniences such as glare to other drivers or pedestrians.

Second, by adopting a dual type LED and applying a shield to one of these LEDs, upward irradiation using high beam mode as well as simultaneous upward and downward irradiation using a combination of low beam mode and semi-high beam mode are possible, making it an automotive head It has the effect of improving the functionality of the light.

1 is a perspective view showing a shield device for a headlight for an automobile according to an embodiment of the present invention.
Figure 2 is a plan view showing a shield device for a headlight for an automobile according to an embodiment of the present invention.
Figure 3 is a schematic diagram showing first to fourth reflective surfaces in a shield device for a headlight for an automobile according to an embodiment of the present invention.
Figures 4 and 5 are perspective views showing a headlight for an automobile to which a shield device is applied according to an embodiment of the present invention.
Figure 6 is a cross-sectional view showing the use state of an automobile headlight to which a shield device according to an embodiment of the present invention is applied.

Hereinafter, the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a perspective view showing a shielding device for an automobile headlight according to an embodiment of the present invention, Figure 2 is a plan view showing a shielding device for an automobile headlight according to an embodiment of the present invention, and Figure 3 is a This is a schematic diagram showing first to fourth reflective surfaces in a shield device for a headlight for an automobile according to an embodiment of the invention.

As shown in Figures 1 to 3, the shield device of the automobile headlight is mounted on the LED module 10 and includes a shield 14 as a means of guiding the light of the LED 11 forward.

The shield 14 is an integrated structure of the shield body 12 and the shield reflector 13. In this case, the shield reflector 13 extends to the front of the shield body 12 (e.g., in front of the side where the reflecting surface is located). As it does so, the end becomes bent into a spherical shape.

This shield 14 is installed in a structure in which the shield body 12 is coupled to the LED bar 16 through a screw fastening structure.

For this purpose, a screw hole 17 is formed in the LED bar 16, and a screw penetrating the shield body 12 of the shield 14 is fastened to the screw hole 17 formed in this way, so that the shield 14 ) can be fixedly installed on the LED bar 16.

In addition, a through hole 17 is formed in the LED bar 16, and at this time, the pin 18 formed on the shield reflector 13 is inserted into the through hole 17, so that the shield 14 is Instead of moving from side to side, it can be fixed in an exact position, for example, the shield reflector 13 is aligned next to one side of the bar-shaped LED 11.

In addition, the shield body 12 uses a reflective surface (e.g., first to fourth reflective surfaces) in a bent posture toward the side where the LED 11 is located at a position in front of the LED 11 to display the LED ( Part of the light emitted from 11) can be reflected to the reflective surface of the lamp housing (not shown), and the shield reflector 13 is positioned on the side of the LED 11 at a position off to one side of the LED 11. It is composed of a flat surface and a spherical surface that block the sides and top, allowing the light emitted from the LED (11) to be reflected onto the reflective surface of the lamp housing.

This shield 14 is assigned to one LED (11a) among the two LEDs (11a, 11b) and reflects some of the light emitted from the LED (11a) to the reflective surface and sends it to the reflective surface of the lamp housing. It becomes possible.

In particular, the shield body 12 is formed with first reflective surfaces 15a to 4th reflective surfaces 15d that function to reflect the light of the LED 11 by bending it at a predetermined angle. The reflective surfaces 15a to 15d are inclined at different angles and form a four-segment reflective surface structure in which they are connected and combined in a lattice shape.

And, the first reflective surface (15a), the second reflective surface (15b), the third reflective surface (15c), and the fourth reflective surface (15d) formed on the shield body 12 of the shield 14 are virtual. It can be made of an inclined surface forming an angle of 5 to 20 degrees, preferably 10 to 15 degrees, based on the vertical surface (vs).

For example, the first reflective surface 15a is parallel to the left and right width directions of the shield 14, and is aligned with the third reflective surface 15c based on the vertical surface (vs) parallel to the upper and lower thickness directions of the shield 14. The upper part in contact is inclined at an angle of 10° toward the side where the LED (11) is located, and the side in contact with the second reflecting surface (15b) is inclined at an angle of 10° toward the side where the LED (11) is located, and the second half The slope 15b is parallel to the left and right width directions of the shield 14, and the upper part in contact with the fourth reflective surface 15d based on the vertical surface (vs) parallel to the upper and lower thickness directions of the shield 14 is the LED 11. In addition to being inclined at 10° toward the side where the shield reflector 13 is located, the side in contact with the shield reflector 13 is inclined at 15° toward the side where the LED 11 is located, and the third reflecting surface 15c is inclined toward the shield 14. The upper side in contact with the upper side of the shield body 12 is inclined at an angle of 15° toward the LED 11 based on the vertical plane (vs) parallel to the left and right width directions and parallel to the upper and lower thickness directions of the shield 14. In addition, the side in contact with the fourth reflective surface (15d) is inclined at a 10° angle toward the LED 11, and the fourth reflective surface (15b) is parallel to the left and right width directions of the shield 14. Based on the vertical surface (vs) parallel to the upper and lower thickness direction of the shield 14, the upper side in contact with the upper side of the shield body 12 is inclined at a 15° angle toward the LED 11, and the shield reflector 13 side The side in contact with the LED (11) is inclined at a 15° angle.

Accordingly, some light from the LED 11 is irradiated to the first reflective surfaces 15a to 4th reflective surfaces 15d, and the light at this time is irradiated to the first reflective surfaces 15a to 4th reflective surfaces 15d. It is reflected and irradiated onto the reflective surface of the lamp housing at a downward angle, and the light irradiated in this way is reflected again on the reflective surface of the lamp housing and irradiated towards the front of the vehicle at an upward angle, ultimately even when irradiated in low beam mode. A semi-high beam irradiation effect can be seen by using some of the light emitted from the LED 11, that is, part of the light emitted from the LED 11 to which the shield 14 belongs.

Figures 4 and 5 are perspective views showing a headlight for an automobile to which a shield device according to an embodiment of the present invention is applied.

As shown in Figures 4 and 5, a headlight for an automobile to which the shield device is applied includes a headlight body 20 installed within a lamp housing (not shown) of an automobile lamp (not shown).

A power terminal 21 is formed at the rear of the headlight body 20, and power can be supplied through the power terminal 21 formed in this way, and the LED module is inside the headlight body 20. (10) can be installed.

In addition, the shield device of the automobile headlight is installed inside the headlight body 20 and includes an LED module 10 as a means of irradiating light using the LED 11.

The LED module 10 includes a PCB board 22 that is electrically connected to the power terminal 21, and an LED bar that is electrically connected to the PCB board 22 while being coupled to the tip of the PCB board 22. 16) and a plurality of LEDs 11 installed on the LED bar 16 and electrically connected to the LED bar 16.

In addition, the LEDs 11 of the LED module 10 consist of two sets facing upward and downward, that is, two sets installed on the upper and lower surfaces of the LED bar 16 in a horizontal position, respectively, The light in (11) can be irradiated to two places at the same time: top and bottom.

In particular, the LED 11 of the LED module 10 is formed in the form of a bar with a plurality of LED elements arranged in a row, and the LEDs 11 formed in the form of a bar are provided in four numbers, and the LEDs 11 in the form of four bars are provided. Two of the LEDs 11 are placed on the top of the LED bar 16 at a distance back and forth, while the remaining two are also placed on the bottom of the LED bar 16 at a distance back and forth.

Among the two bar-shaped LEDs 11a and 11b installed on one side of the LED bar 16, the shield 14 is attached to only one bar-shaped LED 11a.

Accordingly, when light is emitted from the LED (11), in one LED (11b) without the shield 14, the light of the LED (11b) can be emitted directly to the reflective surface of the lamp housing, thereby producing a high beam. In mode, upward irradiation to the front of the vehicle is possible, and in low beam mode, downward irradiation to the front of the vehicle is possible.

Meanwhile, when light is emitted from the LED 11, some of the light emitted from the LED 11a is transmitted to the other LED 11a to which the shield 14 belongs (the reflective surface of the shield 14). Since it can be irradiated to the reflective surface of the lamp housing after being reflected by 15a to 15d), the light irradiated through the reflective surface (15a to 15d) at this time is directed to the reflective surface (15a to 15d) bent toward the LED (11a). As a result, the light is irradiated to the reflective surface of the lamp housing along a direction in which the angle is bent downward (e.g., a direction bent relatively downward compared to the angle of light reflected from the vertical reflective surface), and is eventually irradiated to the front of the vehicle through the reflective surface of the lamp housing. It is possible to irradiate the light upward (for example, upward irradiation that is irradiated relatively low compared to upward irradiation in high beam mode).

That is, in low beam mode, downward irradiation and semi-upward irradiation are possible.

In this way, in the high beam mode, high beam irradiation is possible for both the LED 11a to which the shield 14 belongs and the LED 11b to which the shield 14 does not belong, and in the low beam mode, the LED to which the shield 14 belongs Some of the light in (11a) (e.g., the light reflected by the shield reflective surface) is semi-high beam irradiation (e.g., the high beam irradiation at this time is relatively downward irradiation compared to normal high beam irradiation and relatively upward irradiation compared to normal low beam irradiation). ) becomes possible, and at the same time, the LED 11b to which the shield 14 does not belong can emit low beam, so that when the driver drives the vehicle in low beam mode, it does not cause dazzle to the other vehicle. There is an advantage in being able to secure a brighter, farther, and wider peripheral vision.

In addition, the shield device of the automobile headlight includes a heat sink 23 as a means to effectively dissipate heat from the LED 11.

The heat sink 23 has a cylindrical shape with a plurality of cooling fins 24 around the outer wall and an empty interior. The heat sink 23 has an upper portion corresponding to the position where the LED 11 is installed. A light transmission hole 25 is formed by drilling a part of the outer wall at the bottom, and the light transmission hole 25 at this time is made up of two locations corresponding to the upper and lower sets of LEDs 11, so that the light from the LEDs 11 is transmitted. It can be irradiated simultaneously through the upper and lower light transmission holes 25.

Accordingly, the heat generated from the LED 11 is transferred to the body of the heat sink 23, and the heat transferred in this way is formed integrally with the body of the heat sink 23, thereby ensuring a sufficient contact area. When transmitted to the fins 24, the cooling fins 24 at this time can effectively dissipate heat using heat exchange through contact with air.

This heat sink 23 surrounds the LED module 10 and is installed in front of the headlight body 20 while covering the rear of the headlight body 20 with the housing portion.

In addition, the shield device of the automobile headlight is installed at the front end of the heat sink 23 and includes a fan 26 as a means of providing air toward the heat sink 23.

At the rear end of the fan 26, a disk-shaped fan holder 27 is formed, which has a structure that allows air to enter and exit, and this fan 26 uses the fan holder 27 to connect the front end of the heat sink 23. It is installed in a structure that is coaxial with the heat sink 23 while being inserted and seated in it.

Here, the fan 26 is connected to the LED module 10 by a wire (not shown), so that it can receive power and operate.

Figure 6 is a cross-sectional view showing a state of use of a headlight for an automobile to which a shield device according to an embodiment of the present invention is applied.

As shown in FIG. 6, when power is supplied to the power terminal 21 of the headlight body 20, the LED 11 of the LED module 10 turns on and light is radiated to the front of the vehicle, and the driver's Depending on the operation of the low beam mode or high beam mode, the light emitted toward the front of the vehicle can also be illuminated downward or upward.

Meanwhile, in the low beam mode of the headlight, among the two LEDs (11a, 11b) installed in the LED bar (16), the light emitted from LED (11a) to which the shield (14) belongs does not belong to the shield (14). The light emitted from the LED 11b has different reflection angles and irradiation directions, passes through the light transmission hole 25, and is irradiated to the reflective surface of the lamp housing.

For example, some of the light emitted from the LED 11a to which the shield 14 belongs is irradiated directly toward the reflective surface of the lamp housing, and some of the light is emitted directly toward the first reflective surface 15a to the second reflective surface 15a of the shield 14. 4 After being reflected on the reflective surface 15d, it is irradiated toward the reflective surface of the lamp housing. At this time, the light reflected on the first reflective surfaces 15a to 4th reflective surfaces 15d of the shield 14 is reflected by the lamp housing. Compared to the light irradiated directly toward the slope, it is irradiated downward to the reflective surface of the lamp housing at a relatively low angle, and the light irradiated downward is reflected from the reflective surface of the lamp housing, bends upward, and is then irradiated upward to the front. An upward irradiation effect can be achieved, and eventually, even in low beam mode, some light is irradiated upward, making it possible to secure a brighter, wider, and farther view of the surroundings.

Of course, the light emitted upwardly forward through the reflective surface of the lamp housing after passing through the first reflective surface 15a to fourth reflective surface 15d is a portion of the total amount of light emitted to the front of the vehicle, for example, approximately Since it is about 50%, it does not cause inconveniences such as glare to drivers of other vehicles.

As such, in the present invention, a shield having a four-split reflective surface structure with a predetermined reflection angle is combined with one side of the LED of the LED module, so that some of the light from the LED is first reflected through the shield and then passes through the reflective surface of the lamp housing to the front of the vehicle. By providing a new shield device that illuminates the light, it is possible to illuminate the light upward in the form of a semi-high beam when driving in low beam mode, which not only promotes safe driving by securing sufficient forward visibility, but also protects other drivers and pedestrians. This can be done to prevent discomfort such as glare.

10: LED module
11:LED
12: Shield body
13: Shield reflector
14: Shield
15a∼15d: 1st to 4th reflective surfaces
16: LED bar
17: screw hole
18: pin
19: Through hole
20: Headlight body
21: power terminal
22: PCB board
23: heat sink
24: Cooling fin
25: Light transmission hole
26: fan
27: Pan holder

Claims (5)

As a means installed on one side of the LED (11) in the LED module (10) of an automobile headlight to reflect the light emitted from the LED (11),
It includes a shield (14) consisting of a combination of a shield body (12) and a shield reflector (13),
The shield body 12 of the shield 14 has a four-segment reflective surface structure that is inclined at different angles and is connected and combined in a grid shape, and the LED 11 is positioned in front of the LED 11. First reflective surfaces 15a to 4th reflective surfaces 15d are formed in a posture bent toward the side,
The first reflective surface (15a) is parallel to the left and right width directions of the shield 14, and the upper part in contact with the third reflective surface 15c based on the vertical surface (vs) parallel to the upper and lower thickness directions of the shield 14 is LED. In addition to being inclined at an angle of 10° toward the side where the LED (11) is located, the side in contact with the second reflecting surface (15b) is inclined at an angle of 10° toward the side where the LED (11) is located,
The second reflective surface (15b) is parallel to the left and right width directions of the shield 14, and the upper part in contact with the fourth reflective surface 15d based on the vertical surface (vs) parallel to the upper and lower thickness directions of the shield 14 is LED. In addition to being inclined at an angle of 10° toward the side where the LED (11) is located, the side in contact with the shield reflector (13) is inclined at an angle of 15° toward the side where the LED (11) is located,
The third reflective surface 15c is parallel to the left and right width directions of the shield 14 and has an upper side in contact with the upper side of the shield body 12 based on the vertical surface (vs) parallel to the upper and lower thickness directions of the shield 14. In addition to being inclined at an angle of 15° toward the side where the LED (11) is located, the side in contact with the fourth reflective surface (15d) is inclined at an angle of 10° toward the side where the LED (11) is located,
The fourth reflective surface (15d) is parallel to the left and right width directions of the shield 14 and has an upper side in contact with the upper side of the shield body 12 based on the vertical surface (vs) parallel to the upper and lower thickness directions of the shield 14. A shield device for an automobile headlight, characterized in that the side in contact with the shield reflector (13) is inclined at an angle of 15° toward the side where the LED (11) is located, and the side in contact with the shield reflector (13) is inclined at an angle of 15° toward the side where the LED (11) is located. .
delete delete In claim 1,
The shield 14 is made of an integrated structure of the shield body 12 and the shield reflector 13, and the shield reflector 13 extends in front of the shield body 12 and has an end bent into a spherical shape. The shield 14 is coupled and fixed to the screw hole 17 formed in the LED bar 16 of the LED module 11 using a shield body 12 through a screw fastening structure. A shield device for an automobile headlight, characterized in that it is installed in a structure that is inserted and fixed into a through hole (19) formed in the LED bar (16) using a pin (18) on the bottom of the shield reflector (13).
In claim 1,
The LEDs 11 of the LED module 10 are composed of two LEDs 11 installed at a distance from each other, and a shield 14 is attached to one LED 11a among the two LEDs 11a and 11b, forming a shield (11a). The light irradiated from one LED (11b) without 14) is irradiated directly to the reflective surface of the lamp housing, and a part of the light irradiated from the other LED (11a) with a shield (14) is irradiated to the shield (14). A shield device for a headlight for an automobile, characterized in that it is irradiated to the reflective surface of the lamp housing after being reflected on the first reflective surface (15a) to the fourth reflective surface (15d).

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