Lighting device and headlamp

Abstract

The present application provides a lighting device and a headlamp, which can realize both a low beam light distribution pattern and a high beam light distribution pattern by one light emitting portion. The lighting device (100) has: a light emitting portion (110); a reflector (120) that reflects a first portion of light emitted from the light emitting portion; a first lens (130) having a first incident surface on which the light reflected by the reflector is incident; a second lens (140) having a second incident surface on which a second portion of the light emitted from the light emitting portion is incident, the distance between the light emitting portion and the second incident surface in a horizontal direction being smaller than the distance between the light emitting portion and the first incident surface in the horizontal direction; a first light blocking member (150) provided between the first lens and the second lens; a second light blocking member (160) located between the light emitting portion and the first lens in the horizontal direction; a third light blocking member (170) located between the light emitting portion and the second lens in the horizontal direction; and a driving portion (180) that switches between a light blocking state and a non-light blocking state.

Description

Technical Field

[0001] This invention relates to lighting devices and headlights. Background Technology

[0002] Previously, as headlights for automobiles and other vehicles, there were known lighting devices that could switch between low beam and high beam light distribution patterns. In such lighting devices, there is a requirement to use a single light-emitting part to achieve both the low beam and high beam light distribution patterns.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2017-103189 Summary of the Invention

[0004] The purpose of this invention is to provide a lighting device and a headlight that can achieve both low beam and high beam light distribution patterns by a single light-emitting part.

[0005] The lighting device according to an embodiment of the present invention includes: a light-emitting part; a reflector disposed above the light-emitting part for reflecting a first portion of light emitted from the light-emitting part; a first lens having a first incident surface for incident light reflected by the reflector; a second lens disposed above the first lens in a vertical direction and having a second incident surface for incident light a second portion of light emitted from the light-emitting part, wherein the horizontal distance between the light-emitting part and the second incident surface is less than the horizontal distance between the light-emitting part and the first incident surface; a first light-shielding member disposed between the first lens and the second lens in the vertical direction; and a second light-shielding member positioned horizontally above the light-emitting part. The position of the light source is between the position of the light source and the position of the first lens; the third light-shielding member is positioned in the horizontal direction between the position of the light-emitting part and the position of the second lens; the driving unit switches between a light-shielding state and a non-light-shielding state by moving the second light-shielding member and the third light-shielding member. In the light-shielding state, the second light-shielding member blocks a portion of the light from the reflector toward the first incident surface, and the third light-shielding member blocks a second portion of the light from the light-emitting part toward the second incident surface. In the non-light-shielding state, the second light-shielding member does not block the light from the reflector toward the first incident surface, and the third light-shielding member does not block the second portion of the light.

[0006] The lighting device according to an embodiment of the present invention includes: a substrate having an upper surface and a lower surface; a light-emitting part disposed on the upper surface of the substrate; a reflector disposed on the upper surface of the substrate such that it covers the light-emitting part and reflects a first portion of light emitted from the light-emitting part; a first lens having a first incident surface for light reflected by the reflector to be incident on, a first exiting surface for light incident on the first incident surface to be exited, and an upper surface disposed between the first incident surface and the first exiting surface; and a second lens having a second incident surface for a second portion of light emitted from the light-emitting part to be incident on, a second exiting surface for light incident on the second incident surface to be exited, and a lower surface disposed between the second incident surface and the second exiting surface. The second lens is disposed above the first lens in a direction from the lower surface of the substrate toward the upper surface of the substrate, and the distance from the center of the light-emitting part to the second incident surface is less than the distance from the center of the light-emitting part to the first incident surface. The distance between the incident surfaces includes: a first light-blocking member disposed between the upper surface of the first lens and the lower surface of the second lens; a second light-blocking member positioned between the position of the light-emitting part and the position of the first lens in the direction from the light-emitting part toward the first lens; a third light-blocking member positioned between the position of the light-emitting part and the position of the second lens in the direction from the light-emitting part toward the second lens; and a driving unit capable of switching between a light-blocking state and a non-light-blocking state by moving the second light-blocking member and the third light-blocking member. In the light-blocking state, the second light-blocking member blocks a portion of the light from the reflector toward the first incident surface, and the third light-blocking member blocks a second portion of the light from the light-emitting part toward the second incident surface. In the non-light-blocking state, the second light-blocking member does not block the light from the reflector toward the first incident surface, and the third light-blocking member does not block the second portion of the light.

[0007] The above-described lighting device is used in the headlights of embodiments of the present invention.

[0008] According to an embodiment of the present invention, a lighting device and a headlight can be provided, which can realize both the low beam light distribution pattern and the high beam light distribution pattern by a single light-emitting part. Attached Figure Description

[0009] Figure 1 This is a perspective view showing the lighting device of the embodiment.

[0010] Figure 2 It is an exploded perspective view of the lighting device.

[0011] Figure 3 This is a partial cross-sectional view showing a lighting device in a shaded state.

[0012] Figure 4 This is a partial cross-sectional view showing a lighting device in an unshielded state.

[0013] Figure 5 This is a three-dimensional diagram showing the reflector of a lighting device.

[0014] Figure 6 It is a cross-sectional view showing the reflector and substrate of the lighting device.

[0015] Figure 7 It is a three-dimensional view showing the first lens, the second lens, and the first light-shielding component of the lighting device.

[0016] Figure 8A This is a perspective view showing the second light-shielding component, the third light-shielding component, and the drive unit of the lighting device.

[0017] Figure 8B This is a plan view of the second and third light-shielding components and the drive unit, viewed from the front to the rear.

[0018] Figure 9A This is a plan view showing the second light-shielding component as seen from the rear towards the front.

[0019] Figure 9B This is a plan view showing the third light-shielding component as seen from the rear towards the front.

[0020] Figure 10 It is a diagram showing the trajectory of light emitted from the light-emitting part when the light is blocked.

[0021] Figure 11 It is a diagram showing the trajectory of light emitted from the light-emitting part in an unshielded state.

[0022] Figure 12A This is a diagram illustrating light emitted from a vehicle under shaded conditions.

[0023] Figure 12B This is a diagram illustrating light emitted from a vehicle in an unshaded state.

[0024] Figure 13A This is an example of a light distribution pattern configured on a screen in front of a vehicle when the sun is off.

[0025] Figure 13B This is an example of a light distribution pattern configured on a screen in front of a vehicle when it is not shaded.

[0026] Explanation of reference numerals in the attached figures

[0027] 100: Lighting device

[0028] 110: Light-emitting part

[0029] 120: Reflector

[0030] 130: First lens

[0031] 131: First incident surface

[0032] 132: First exit surface

[0033] 133: Upper surface

[0034] 140: Second lens

[0035] 141: Second incident surface

[0036] 142: Second exit surface

[0037] 143: Lower surface

[0038] 150: First light-shielding component

[0039] 160: Second light-shielding component

[0040] 170: Third light-shielding component

[0041] 180: Drive Unit

[0042] 191: Substrate

[0043] 192: Radiator

[0044] 193: Control Department

[0045] E1: The horizontal distance between the light-emitting part and the first lens.

[0046] E2: The horizontal distance between the light-emitting part and the second lens.

[0047] E3: The horizontal distance between the light-emitting part and the second light-shielding part.

[0048] E4: The horizontal distance between the light-emitting part and the third light-shielding component.

[0049] G: Vehicle

[0050] L1: The first part of the light emitted from the light-emitting part

[0051] L1a: Light from the reflector toward the first incident surface

[0052] L2: The second part of the light emitted from the light-emitting part

[0053] S: Screen

[0054] S1: First Area

[0055] S2: Second Region

[0056] S3: Third Region

[0057] U: Lens unit

[0058] X: Forward / backward direction

[0059] Y: Left and right directions

[0060] Z: Up / Down direction Detailed Implementation

[0061] The illumination device of the embodiment includes: a light-emitting part; a reflector disposed above the light-emitting part for reflecting a first portion of light emitted from the light-emitting part; a first lens having a first incident surface for light reflected by the reflector to enter; a second lens disposed above the first lens in a vertical direction and having a second incident surface for a second portion of light emitted from the light-emitting part to enter, wherein the horizontal distance between the light-emitting part and the second incident surface is less than the horizontal distance between the light-emitting part and the first incident surface; a first light-shielding member disposed between the first lens and the second lens in the vertical direction; and a second light-shielding member positioned horizontally above the light-emitting part. The position is between the position of the first lens and the position of the second lens; the third light-shielding member is positioned in the horizontal direction between the position of the light-emitting part and the position of the second lens; the driving unit switches between a light-shielding state and a non-light-shielding state by moving the second light-shielding member and the third light-shielding member, wherein in the light-shielding state, the second light-shielding member blocks a portion of the light from the reflector toward the first incident surface, and the third light-shielding member blocks the second portion of the light from the light-emitting part toward the second incident surface; in the non-light-shielding state, the second light-shielding member does not block the light from the reflector toward the first incident surface, and the third light-shielding member does not block the second portion of the light.

[0062] Hereinafter, the specific structure of the lighting device according to the embodiment will be described with reference to the accompanying drawings.

[0063] Figure 1 This is a perspective view showing the lighting device of the embodiment.

[0064] Figure 2 It is an exploded perspective view of the lighting device.

[0065] Figure 3 This is a partial cross-sectional view showing a lighting device in a shaded state.

[0066] Figure 4 This is a partial cross-sectional view showing a lighting device in an unshielded state.

[0067] The lighting device 100 of this embodiment is used as a headlight for vehicles such as automobiles. When mounted on a vehicle, the lighting device 100 can switch between a low beam beam pattern and a high beam beam pattern.

[0068] The XYZ Cartesian coordinate system will be used below. For ease of explanation, in the lighting device 100, the direction from below the vehicle upwards when mounted on the vehicle will be referred to as the "vertical direction Z". The direction orthogonal to the vertical direction Z will be referred to as the "horizontal direction". In the horizontal direction of the lighting device 100, the direction from the rear of the vehicle forwards when mounted on the vehicle will be referred to as the "front-rear direction X". In the horizontal direction of the lighting device 100, the direction from the right side of the vehicle to the left side when mounted on the vehicle will be referred to as the "left-right direction Y". Terms indicating specific directions or positions (e.g., "up", "down", "right", "left", and other terms containing these terms) are not limited to these as long as the relative positional relationship is consistent.

[0069] Reference Figure 1 and Figure 2 In summary, the lighting device 100 of this embodiment includes a light-emitting part 110, a reflector 120, a first lens 130, a second lens 140, a first light-shielding member 150, a second light-shielding member 160, a third light-shielding member 170, and a driving part 180.

[0070] like Figure 3 and Figure 4 As shown, the reflector 120 is disposed above the light-emitting part 110 and reflects the first part L1 of the light emitted from the light-emitting part 110.

[0071] The first lens 130 has a first incident surface 131 into which light L1a reflected by the reflector 120 is incident.

[0072] The second lens 140 is positioned above the first lens 130 in the vertical direction Z. The second lens 140 has a second incident surface 141 into which the second portion L2 of the light emitted from the light-emitting unit 110 enters. The distance E2 between the light-emitting unit 110 and the second incident surface 141 in the horizontal direction (front-back direction X) is less than the distance E1 between the light-emitting unit 110 and the first incident surface 131 in the horizontal direction (front-back direction X). Here, distances E1 and E2 represent distances from the center of the light-emitting unit 110.

[0073] The first light-shielding member 150 is disposed between the first lens 130 and the second lens 140 in the vertical direction Z. In this specification, "light-shielding" means that the transmittance of the incident light is less than 1%.

[0074] The second light-shielding member 160 is positioned in the horizontal direction (front-back direction X) between the position of the light-emitting part 110 and the position of the first lens 130. Furthermore, the statement "the second light-shielding member 160 is positioned in the horizontal direction between the position of the light-emitting part 110 and the position of the first lens 130" only specifies the relationship between the positions of the second light-shielding member 160, the light-emitting part 110, and the first lens 130 in the horizontal direction; it does not specify that the light-emitting part 110, the second light-shielding member 160, and the first lens 130 are located on a straight line extending in the horizontal direction.

[0075] The third light-shielding member 170 is positioned in the horizontal direction (front-back direction X) between the position of the light-emitting part 110 and the position of the second lens 140. Similarly, "the third light-shielding member 170 is positioned in the horizontal direction between the position of the light-emitting part 110 and the position of the second lens 140" only specifies the relationship between the positions of the third light-shielding member 170, the light-emitting part 110, and the second lens 140 in the horizontal direction, and does not specify that the light-emitting part 110, the third light-shielding member 170, and the second lens 140 are located on a straight line extending in the horizontal direction.

[0076] like Figure 1 As indicated by arrow a1, the drive unit 180 can switch between a light-shielding state and a non-light-shielding state by moving the second light-shielding member 160 and the third light-shielding member 170.

[0077] like Figure 3 As shown, in the light-shielding state, the second light-shielding member 160 blocks a portion of the light L1a from the reflector 120 toward the first incident surface 131, and the third light-shielding member 170 blocks the second portion L2 from the light-emitting part 110 toward the second incident surface 141. In the light-shielding state, when the light-emitting part 110 is lit, a low-beam light distribution pattern is emitted from the lighting device 100.

[0078] like Figure 4 As shown, in the non-shielding state, the second light-shielding member 160 does not block the light L1a from the reflector 120 toward the first incident surface 131, and the third light-shielding member 170 does not block the second part L2. When the light-emitting part 110 is lit, a light distribution pattern for high beams is emitted from the lighting device 100.

[0079] In both the light-shielding and non-light-shielding states, the second light-shielding member 160 is positioned between the light-emitting part 110 and the first lens 130 in the horizontal direction (front-back direction X). Similarly, in both the light-shielding and non-light-shielding states, the third light-shielding member 170 is positioned between the light-emitting part 110 and the second lens 140 in the horizontal direction (front-back direction X). The various parts of the lighting device 100 will now be described in detail.

[0080] The lighting device 100 has a base plate 191.

[0081] The substrate 191 is, for example, a wiring substrate in which wiring connected to the light-emitting part 110 is provided in a base material made of resin. The surface of the substrate 191 includes an upper surface 191a and a lower surface 191b located on the opposite side of the upper surface 191a.

[0082] The upper surface 191a and the lower surface 191b are flat surfaces parallel to the front-back direction X and the left-right direction Y. The light-emitting part 110 is mounted on the upper surface 191a. In addition, the reflector 120 is mounted on the upper surface 191a in a manner that covers the light-emitting part 110.

[0083] A heat sink 192 is mounted on the lower surface 191b. For example... Figure 2 As shown, the heat sink 192 has a through hole 192a that extends through the heat sink 192 in the vertical direction Z. In addition, the substrate 191 has a through hole 191c that extends through the substrate 191 in the vertical direction Z.

[0084] like Figure 3 and Figure 4 As shown, the light-emitting unit 110 in this embodiment includes a light-emitting element 111 and a wavelength conversion member 112, which performs wavelength conversion on the light emitted from the light-emitting element 111. The light-emitting element 111 is, for example, an LED (Light Emitting Diode). In this embodiment, the light emitted from the light-emitting element 111 is blue. The wavelength conversion member 112 includes wavelength conversion particles such as phosphors. The light emitted from the wavelength conversion member 112 is yellow. The color of the light emitted from the light-emitting unit 110 is white by mixing the blue light emitted from the light-emitting element 111 and the yellow light emitted from the wavelength conversion member 112. Alternatively, the light-emitting element 111 may also emit green or red light, and the wavelength conversion member 112 may also emit green or red light. The number of light-emitting elements constituting the light-emitting unit 110 can be one or more. Similarly, the number of wavelength conversion members in the light-emitting unit 110 can be one or more.

[0085] Figure 5This is a three-dimensional diagram showing the reflector of a lighting device.

[0086] Figure 6 It is a cross-sectional view showing the reflector and substrate of the lighting device.

[0087] like Figure 5 As shown, in this embodiment, the reflector 120 has a main body 121, a first mounting portion 122, and a second mounting portion 123. The reflector 120 is made of a metal material such as aluminum.

[0088] In this embodiment, the main body 121 is a concave mirror with openings at the front and bottom. The surface of the main body 121 includes an inner surface 121a, an outer surface 121b, a lower surface 121c, and a front surface 121d.

[0089] like Figure 6 As shown, the inner surface 121a has a shape such that it rotates 180 degrees around the central axis C1, which extends forward from the central axis C1 extending in the front-rear direction X. The curve D1 is, for example, composed of a combination of multiple parabolas. The inner surface 121a is opposite to the light-emitting part 110. The central axis C1 passes through the center of the light-emitting part 110 when viewed from above.

[0090] The outer surface 121b is located on the opposite side of the inner surface 121a. The outer surface 121b generally has a shape that rotates 180 degrees around the central axis C1 as it moves forward along the curve D2 that is centered on the central axis C1.

[0091] The lower surface 121c is in contact with the lower end of the inner surface 121a and is disposed around the inner surface 121a. The lower surface 121c is in contact with the upper surface 191a of the substrate 191.

[0092] The front surface 121d is located between the front end of the inner surface 121a and the front end of the outer surface 121b. For example... Figure 5 As shown, the front surface 121d includes a first region 121e that is connected to the front end on the right side of the lower surface 121c, a second region 121f that is connected to the front end on the left side of the lower surface 121c, and a third region 121g located between the first region 121e and the second region 121f. The first region 121e and the second region 121f are substantially perpendicular to the upper surface 191a of the substrate 191. The third region 121g is concavely curved rearward.

[0093] The first mounting portion 122 is mounted on the substrate 191. The first mounting portion 122 protrudes rearward from the main body 121 and contacts the upper surface 191a of the substrate 191. The first mounting portion 122 is plate-shaped. A first through hole 122a is provided in the first mounting portion 122, extending through it in the vertical direction Z. Figure 2As shown, screws or rivets for mounting the reflector 120 onto the substrate 191 are disposed in the first through hole 122a and the through hole 191c of the substrate 191.

[0094] The drive unit 180 is mounted on the second mounting unit 123. For example... Figure 5 As shown, the second mounting portion 123 protrudes upward from the main body portion 121. A second through hole 123a is provided in the second mounting portion 123, which penetrates the second mounting portion 123 in the front-rear direction X. Figure 3 As shown, the motor 181 of the drive unit 180 is disposed in the second through hole 123a. Additionally, as... Figure 5 As shown, a third through hole 123b is provided in the second mounting portion 123, and the third through hole 123b penetrates the second mounting portion 123 in the front-rear direction X. Figure 2 As shown, screws or rivets or other fasteners for mounting the bracket 182 to the reflector 120 are disposed in the third through hole 123b and in the through hole 182a of the bracket 182 of the drive part 180 described later.

[0095] However, the structure of the reflector 120 is not limited to the above. For example, the reflector 120 may be made of resin material, and a reflective layer made of a metal material such as aluminum may be provided on the inner surface 121a of the main body 121. Alternatively, the second mounting portion 123 may not be provided in the reflector 120. In this case, the drive portion 180 may be mounted on other components of the lighting device 100 other than the reflector 120, such as the substrate 191 or the heat sink 192.

[0096] like Figure 3 As shown, the first lens 130 is disposed at the lower part of the reflector 120 and in front of the substrate 191, and is away from the reflector 120 and the substrate 191. The upper end 130a of the first lens 130 is located above the upper surface 191a of the substrate 191. The lower end 130b of the first lens 130 is located below the lower surface 191b of the substrate 191.

[0097] Figure 7 This is a perspective view showing the first lens, the second lens, and the first light-shielding component of the lighting device. The first lens 130 is, for example, a collimating lens. The first lens 130 is made of a light-transmitting material such as acrylic or polycarbonate. The first lens 130 is convex and faces forward. The surface of the first lens 130 includes a first incident surface 131, a first exit surface 132, and an upper surface 133.

[0098] The first incident surface 131 is a flat surface parallel to the vertical direction Z and the horizontal direction Y. The first exit surface 132 is located on the opposite side of the first incident surface 131. The first exit surface 132 is convexly curved forward. The upper surface 133 is located between the upper end of the first incident surface 131 and the upper end of the first exit surface 132. The upper surface 133 is a flat surface parallel to the upper surface 191a of the substrate 191.

[0099] like Figure 3 As shown, the second lens 140 is positioned above the first lens 130 in the vertical direction Z. In other words, the second lens 140 is positioned above the first lens 130 in the direction from the lower surface 191b of the substrate 191 toward the upper surface 191a. Furthermore, the second lens 140 is positioned in front of the upper portion of the reflector 120, away from the reflector 120. The upper end 140a of the second lens 140 is located above the inner surface 121a of the main body portion 121 of the reflector 120. The lower end 140b of the second lens 140 is located above the upper surface of the light-emitting portion 110.

[0100] like Figure 7 As shown, the second lens 140 is, for example, a collimating lens. The second lens 140 is convex in shape facing forward. The second lens 140 is made of a light-transmitting material such as acrylic or polycarbonate. The surface of the second lens 140 includes a second incident surface 141, a second exit surface 142, and a lower surface 143.

[0101] The second incident surface 141 is a flat surface parallel to the vertical direction Z and the horizontal direction Y. The second exit surface 142 is located on the opposite side of the second incident surface 141. The second exit surface 142 is convexly curved forward, and the lower surface 143 is located between the lower end of the second incident surface 141 and the lower end of the second exit surface 142. The lower surface 143 is a flat surface parallel to the upper surface 191a of the substrate 191.

[0102] like Figure 3 As shown, the distance E2 between the light-emitting part 110 and the second incident surface 141 in the front-rear direction X is less than the distance E1 between the light-emitting part 110 and the first incident surface 131 in the front-rear direction X. The distance from the center of the light-emitting part 110 to the second incident surface 141 is less than the distance from the center of the light-emitting part 110 to the first incident surface 131.

[0103] Furthermore, in this embodiment, the area of ​​the first incident surface 131 is larger than the area of ​​the second incident surface 141. However, the relationship between the areas of the first incident surface 131 and the second incident surface 141 is not limited to the above-described relationship. Additionally, in this embodiment, the front-rear dimension (thickness) of the second lens 140 in the front-rear direction X is smaller than the front-rear dimension (thickness) of the first lens 130 in the front-rear direction X. However, the relationship between the thicknesses of the first lens 130 and the second lens 140 is not limited to the above-described relationship.

[0104] The first light-shielding member 150 is disposed between the first lens 130 and the second lens 140. In this embodiment, the first light-shielding member 150 is light-absorbing. In this specification, "light absorption" means that the reflectivity of the incident light is less than 1%. The first light-shielding member 150 is preferably dark-colored, more preferably black. The first light-shielding member 150 is made of, for example, a resin material, and its surface can be coated with black. Alternatively, the first light-shielding member 150 may also be made of a light-absorbing material such as carbon black. However, the first light-shielding member 150 may also be light-reflective.

[0105] like Figure 7 As shown, in this embodiment, the first light-shielding member 150 has a main body portion 151 disposed between the first lens 130 and the second lens 140, a first mounting portion 152 and a second mounting portion 153 mounted on the heat sink 192.

[0106] The main body 151 is plate-shaped. The surface of the main body 151 includes an upper surface 151a and a lower surface 151b. The upper surface 151a is parallel to the upper surface 191a of the substrate 191. The upper surface 151a is in contact with the lower surface 143 of the second lens 140. The lower surface 151b is located on the opposite side of the upper surface 151a. The lower surface 151b is in contact with the upper surface 133 of the first lens 130. The main body 151 covers the entire area of ​​the upper surface 133 of the first lens 130 and the entire area of ​​the lower surface 143 of the second lens 140.

[0107] The first mounting portion 152 has a first extension 152a connected to the main body 151 and extending to the right, a second extension 152b connected to the first extension 152a and extending downward, and a third extension 152c connected to the second extension 152b and extending to the right. A through hole 152d is provided in the third extension 152c, extending through the third extension 152c in the vertical direction Z. For example... Figure 2 As shown, screws or rivets or other fixing components for mounting the first light-shielding component 150 onto the heat sink 192 are arranged in the through hole 152d and the hole 192a of the heat sink 192.

[0108] like Figure 7 As shown, the second mounting portion 153 has a first extension 153a connected to the main body 151 and extending to the left, a second extension 153b connected to the first extension 153a and extending downward, and a third extension 153c connected to the second extension 153b and extending to the left. A through hole 153d is provided in the third extension 153c, penetrating the third extension 153c in the vertical direction Z. (As shown...) Figure 2As shown, screws or rivets or other fixing components for mounting the first light-shielding member 150 to the heat sink 192 are arranged in the through hole 153d and the hole 192a of the heat sink 192.

[0109] Furthermore, the structure of the first light-shielding member 150 is not limited to the above description. For example, the first light-shielding member 150 may not be close to the upper surface 133 of the first lens 130 and the lower surface 143 of the second lens 140. In addition, the first light-shielding member 150 may not be mounted on the heat sink 192.

[0110] Hereinafter, the first lens 130, the second lens 140, and the first light-shielding component 150 will be referred to as "lens unit U".

[0111] Figure 8A This is a perspective view showing the second light-shielding component, the third light-shielding component, and the drive unit of the lighting device.

[0112] Figure 8B This is a plan view of the second and third light-shielding components and the drive unit as seen from the front to the rear.

[0113] Figure 9A This is a plan view of the second light-shielding component as seen from the rear towards the front.

[0114] Figure 9B This is a plan view of the third light-shielding component as seen from the rear towards the front.

[0115] The second light-shielding member 160 is connected to the shaft 183 of the drive unit 180. In this embodiment, the second light-shielding member 160 is light-absorbing. The second light-shielding member 160 is preferably dark-colored, more preferably black. The second light-shielding member 160 may be made of, for example, a resin material with a black coating on its surface. Alternatively, the second light-shielding member 160 may also be made of a light-absorbing material such as carbon black. The second light-shielding member 160 may also be light-reflective.

[0116] The second light-shielding member 160 is generally plate-shaped with a through hole 160a extending through the second light-shielding member 160 in the front-rear direction X. For example... Figure 3 As shown, in the light-shielding state, the second light-shielding component 160 is disposed between the reflector 120 and the lens unit U. A portion of the light La from the reflector 120 toward the first incident surface 131 of the first lens 130 is blocked by the second light-shielding component 160, and the other portion of the light La passes through the through hole 160a.

[0117] like Figure 9AAs shown, in this embodiment, the second light-shielding member 160 has a connecting portion 161 connected to the shaft 183 of the drive unit 180, a light / dark cutoff line forming portion 162 located below the connecting portion 161 in the light-shielding state, a first connecting portion 163 connecting the left ends of the connecting portion 161 and the light / dark cutoff line forming portion 162, and a second connecting portion 164 connecting the right ends of the connecting portion 161 and the light / dark cutoff line forming portion 162. A through hole 160a is formed through the connecting portion 161, the light / dark cutoff line forming portion 162, the first connecting portion 163, and the second connecting portion 164.

[0118] A through hole 161a is provided in the connecting part 161, which extends through the connecting part 161 in the front-rear direction X. For example... Figure 3 As shown, the shaft 183 of the drive unit 180 is disposed in the through hole 161a.

[0119] In the light-blocking state, the light-dark cutoff line forming section 162 blocks a portion of the light La from the reflector 120 toward the first incident surface 131 of the first lens 130, and forms a light-dark cutoff line J in the near-light transmission pattern (refer to...). Figure 13A ).

[0120] "Light-dark cutoff line J" refers to the upper light-dark boundary line in the low beam lighting pattern. In the low beam lighting pattern, it is required to suppress light from glaring oncoming vehicles, while simultaneously ensuring that signs and pedestrians on sidewalks are visible. Therefore, in countries like Japan where left-hand traffic is permitted, a light-dark cutoff line is required in the upper left corner. The following describes an example where the shape of the light-dark cutoff line forming section 162 corresponds to the shape used in left-hand traffic.

[0121] like Figure 9A As shown, the cut-off line forming portion 162 extends in the left-right direction Y in the light-shielding state. In the light-shielding state, the surface of the cut-off line forming portion 162 includes an upper surface 162a and a lower surface 162b located on the opposite side of the upper surface 162a.

[0122] The lower surface 162b is parallel to the left-right direction Y when in a light-shielding state. The upper surface 162a has a first region 162s1, a second region 162s2, a third region 162s3, and a fourth region 162s4. The first region 162s1 is connected to the first connecting portion 163 and is inclined relative to the left-right direction Y, with the direction increasing towards the right and downward. The second region 162s2 is connected to the right end of the first region 162s1. The second region 162s2 is inclined relative to the left-right direction Y, with the direction increasing towards the right and downward. The third region 162s3 is connected to the right end of the second region 162s2. The third region 162s3 is parallel to the left-right direction Y. The fourth region 162s4 is connected to the right end of the third region 162s3. The fourth region 162s4 is inclined relative to the left-right direction Y, with the direction increasing towards the right and upward. Therefore, in the upper surface 162a, steps 162c are formed through these regions 162s1, 162s2, 162s3, and 162s4. Furthermore, when passage is on the right, a light-dark cutoff line needs to be formed in the upper right. Therefore, the shape of the light-dark cutoff line forming section in the right-hand passage situation is a shape that is a left-right flip of the shape of the light-dark cutoff line forming section 162 in the left-hand passage situation.

[0123] The first connecting portion 163 extends in a direction inclined relative to the vertical direction Z, such that in the light-blocking state, it extends further down and to the left. The second connecting portion 164 extends in a direction inclined relative to the vertical direction Z, such that in the light-blocking state, it extends further down and to the right.

[0124] like Figure 3 As shown, the position of the second light-shielding member 160 in the direction from the light-emitting part 110 toward the first lens 130 is between the position of the light-emitting part 110 and the position of the first lens 130. Similarly, the position of the third light-shielding member 170 in the direction from the light-emitting part 110 toward the second lens 140 is also between the position of the light-emitting part 110 and the position of the second lens 140. Furthermore, as... Figure 8A As shown, the third light-shielding member 170 is positioned in front of the second light-shielding member 160. The third light-shielding member 170 is located away from the second light-shielding member 160. That is, as... Figure 3 As shown, the distance E3 between the light-emitting part 110 and the second light-shielding member 160 in the front-rear direction X is less than the distance E4 between the light-emitting part 110 and the third light-shielding member 170 in the front-rear direction X. However, by integrating the third light-shielding member 170 and the second light-shielding member 160, or by adjusting the positional relationship between the third light-shielding member 170, the second light-shielding member 160, and the lens unit U, the position of the third light-shielding member 170 in the front-rear direction X can be made the same as the position of the second light-shielding member 160.

[0125] In this embodiment, the third light-shielding member 170 has light-absorbing properties. The third light-shielding member 170 is preferably dark-colored, more preferably black. The third light-shielding member 170 may also be made of, for example, a resin material with a black coating on its surface. Alternatively, the third light-shielding member 170 may be made of a light-absorbing material such as carbon black. The third light-shielding member 170 may also have light-reflective properties.

[0126] Figure 9B This is a plan view of the third light-shielding component 170 when viewed from the rear to the front.

[0127] The third light-shielding member 170 is plate-shaped. The third light-shielding member 170 has a connecting part 171 connected to the shaft 183 of the drive part 180, and a main body part 172 connected to the connecting part 171 and covering the entire area of ​​the second incident surface 141.

[0128] The connecting portion 171 is provided with a through hole 171a that extends through the connecting portion 171 in the front-to-back direction. A fastener such as a screw or rivet is disposed in the through hole 171a for mounting the third light-shielding member 170 on the shaft 183 of the drive portion 180.

[0129] like Figure 3 As shown, the main body 172 covers the entire area of ​​the second incident surface 141 in the light-shielding state, blocking the second portion L2 of the light emitted from the light-emitting unit 110 that faces the second incident surface 141. In the light-shielding state, the lower end of the main body 172 is located above the upper surface 133 of the first lens 130. In addition, the lower end of the main body 172 is located above the upper surface 162a of the light-dark cutoff line forming portion 162 of the second light-shielding member 160.

[0130] like Figure 8A As shown, the drive unit 180 includes a motor 181, a bracket 182 that holds the motor 181, and a shaft 183 that is linked to the motor 181. A through hole 182a extending through the bracket 182 in the front-rear direction X is provided on the bracket 182. The shaft 183 is positioned in front of the motor 181 and extends in the front-rear direction X. When the motor 181 is rotated, the shaft 183 rotates about an axis C2 extending in the front-rear direction X. Rotation of the shaft 183 causes the second light-shielding member 160 and the third light-shielding member 170 to rotate about the axis C2.

[0131] The drive unit 180 switches between a light-shielding state and a non-light-shielding state. The light-shielding state is achieved by rotating the shaft 183 via the drive motor 181. Figure 1As shown, the second light-shielding member 160 is positioned to block a portion of the light L1a from the reflector 120 toward the first incident surface 131, and the third light-shielding member 170 is positioned to block the light L2 from the light-emitting part 110 toward the second incident surface 141. The non-shielding state is that the second light-shielding member 160 is positioned not to block the light L1a from the reflector 120 toward the first incident surface 131, and the third light-shielding member 170 is positioned not to block the light L2 from the light-emitting part 110 toward the second incident surface 141.

[0132] The light-emitting unit 110 and the drive unit 180 are electrically connected to the control unit 193. The control unit 193 is electrically connected to the integrated control unit mounted on the vehicle, and controls the light-emitting unit 110 and the drive unit 180 according to the control signals from the integrated control unit.

[0133] The control unit 193 is, for example, an ECU (Electronic Control Unit) that includes the control circuit for the light-emitting unit 110, the control circuit for the drive unit 180, a CPU (Central Processing Unit), and a memory. The control unit 193 controls the light-emitting element 111 in the light-emitting unit 110, causing the light-emitting element 111 to turn off or on. The control unit 193 controls the motor 181 of the drive unit 180 to switch between a light-shielding state and a light-unshielding state.

[0134] Next, the operation of the lighting device 100 in this embodiment will be explained.

[0135] Figure 10 It is a diagram showing the trajectory of light emitted from the light-emitting part under a light-blocking state.

[0136] Figure 11 It is a diagram showing the trajectory of light emitted from the light-emitting part in an unshielded state.

[0137] Figure 12A This is a diagram illustrating light emitted from a vehicle under shaded conditions.

[0138] Figure 12B This is a diagram illustrating light emitted from a vehicle in an unshaded state.

[0139] Figure 13A This is an example of a light distribution pattern configured on a screen in front of a vehicle when the sun is off.

[0140] Figure 13B This is an example of a light distribution pattern configured on a screen in front of a vehicle when it is not shaded.

[0141] exist Figure 13A and Figure 13BIn this context, the symbol HV represents the HV point on screen S in regulations such as the headlight test for left-hand traffic implemented in countries like Japan (According to Protocol Rule 112), the symbol H represents the H line, and the symbol V represents the V line. Additionally, in... Figures 12A to 13B In the diagram, a pattern of dots represents the area illuminated by light. Additionally, in... Figures 12A to 13A In order to facilitate understanding of the extent of each region in the following description, the pattern of the dots has been changed. Therefore, the difference in the dot pattern does not represent a difference in luminance.

[0142] When a control signal indicating the beam pattern for low beam emission is received from the integrated control unit, such as Figure 10 As shown, the control unit 193 controls the drive unit 180 to switch to a light-shielding state and lights up the light-emitting unit 110.

[0143] Therefore, with the second light-shielding member 160 and the third light-shielding member 170 positioned between the reflector 120 and the lens unit U, the light-emitting part 110 is illuminated. At this time, the first portion L1 of the light emitted from the light-emitting part 110 is reflected by the reflector 120. Most of the light L1a in the first portion L1 reflected by the reflector 120 is directed toward the first incident surface 131.

[0144] A cutoff line forming section 162 is disposed between the lower part of the reflector 120 and the first incident surface 131 of the first lens 130. Therefore, a portion L1b of the light L1a from the reflector 120 toward the first incident surface 131 is blocked by the cutoff line forming section 162.

[0145] On the other hand, a through hole 160a is disposed above the light-dark cutoff line forming portion 162 and in front of the reflector 120. Therefore, another portion L1c of the light L1a from the reflector 120 toward the first incident surface 131 is incident on the first incident surface 131 and exits from the first exit surface 132. At this time, a first light-shielding member 150 is provided between the first lens 130 and the second lens 140 in the vertical direction Z. Therefore, it is possible to suppress light incident in the first lens 130 from entering the second lens 140. In addition, it is possible to suppress direct light from the light-emitting portion 110 from entering the second lens 140 from the lower surface 143 of the second lens 140. Thus, it is possible to suppress stray light generated in the light-shielding state.

[0146] like Figure 12A As shown, light L1c emitted from the first emission surface 132 illuminates the front area of ​​the vehicle G equipped with the lighting device 100. Additionally, as... Figure 13AAs shown, the light L1c emitted from the first emitting surface 132 mainly illuminates the first region S1 located below the H line on the screen S. Since a portion L1b of the light L1a is blocked by the cutoff line forming portion 162, a cutoff line J is formed above the first region S1. By forming the cutoff line J, it is possible to suppress light from illuminating the region near the HV point and the region further to the right of the V line and above the H line. That is, it is possible to suppress light from illuminating the oncoming vehicle.

[0147] In addition, such as Figure 10 As shown, the second portion L2 of the light emitted from the light-emitting unit 110 is not reflected by the reflector 120 and faces the second incident surface 141 of the second lens 140. In the light-shielding state, the second light-shielding member 160 covers the entire area of ​​the second incident surface 141. Therefore, the second portion L2 is blocked by the second light-shielding member 160 and does not incident on the second incident surface 141.

[0148] Furthermore, the distance E3 between the light-emitting part 110 and the second light-shielding member 160 in the front-rear direction X is smaller than the distance E4 between the light-emitting part 110 and the third light-shielding member 170 in the front-rear direction X. Therefore, the third light-shielding member 170 can suppress the light L1a from the reflector 120 toward the first incident surface 131 of the first lens 130 from being blocked.

[0149] In this way, under the light-blocking state, a light distribution pattern is obtained mainly formed by the light Lc emitted from the first exit surface 132 of the first lens 130.

[0150] On the other hand, when a control signal indicating the beam pattern for high-beam emission is received from the integrated control unit, such as Figure 11 As shown, the control unit 193 controls the drive unit 180 to switch to a non-shielding state and illuminates the light-emitting unit 110. Therefore, with the second light-shielding member 160 and the third light-shielding member 170 configured in a position offset from the reflector 120 and the lens unit U, the light-emitting unit 110 is illuminated.

[0151] The first portion L1 of the light emitted from the light-emitting part 110 is reflected by the reflector 120. Most of the light L1a in the first portion L1 reflected by the reflector 120 is directed toward the first incident surface 131.

[0152] In a non-shading state, such as Figure 11 As shown, the light and dark cutoff line forming portion 162 of the second light-shielding member 160 is not disposed between the reflector 120 and the lens unit U. Therefore, a portion L1b of the light L1a that is blocked in the light-shielding state enters the first incident surface 131 and exits from the first exit surface 132.

[0153] Similar to the light-blocking state, another portion L1c of the light L1a from the reflector 120 toward the first incident surface 131 is incident on the first incident surface 131 and exits from the first exit surface 132.

[0154] like Figure 12B As shown, light L1c emitted from the first exit surface 132 illuminates the area in front of the vehicle G. The result is as follows: Figure 13B As shown, light L1c mainly illuminates the first region S1 located below line H on screen S. Figure 12B As shown, the light L1b emitted from the first emitting surface 132 mainly illuminates the area in front of the vehicle G, above the area of ​​the illuminating light L1c. The result is as follows: Figure 13B As shown, light L1b is mainly located above the first region S1 on the screen S, and illuminates the second region S2, which includes the HV point and extends in the direction of the H line. Thus, light can be directed to the region above the H line on the screen S, and the luminance near the HV point can be increased.

[0155] In addition, such as Figure 11 As shown, in the unshielded state, the third light-shielding member 170 exposes the entire area of ​​the second incident surface 141. Therefore, the second portion L2 of the light emitted from the light-emitting unit 110 is incident on the second incident surface 141. The distance E2 between the second incident surfaces 141 of the light-emitting unit 110 and the second lens 140 in the front-rear direction X is less than the distance E1 between the first incident surfaces 131 of the light-emitting unit 110 and the first lens 130 in the front-rear direction. Therefore, light emitted upward and forward from the light-emitting unit 110 easily enters the second incident surface 141 of the second lens 140. As a result, the light extraction efficiency of the second lens 140 can be improved.

[0156] Most of the light L2 incident on the second incident surface 141, L2a, exits from the second exit surface 142. For example... Figure 12B As shown, the light L2a emitted from the second exit surface 142 mainly illuminates the area in front of the vehicle G, above the area illuminating the light L1c. The result is as follows... Figure 13B As shown, light L2a mainly illuminates a third region S3, which includes the HV point on the screen S and its surrounding area. The lower part of the third region S3 overlaps with a portion of the first region S1, and the upper part of the third region S3 overlaps with a portion of the second region S2. Thus, since the upper part of the third region S3 overlaps with a portion of the second region S2 near the HV point, the luminance near the HV point can be increased.

[0157] In addition, such as Figure 11As shown, a first light-shielding member 150 is provided between the first lens 130 and the second lens 140 in the vertical direction Z. Therefore, it is possible to suppress light L1b and L1c incident on the first lens 130 from entering the second lens 140. In addition, it is possible to suppress light L2 incident on the second lens 140 from entering the first lens 130. Thus, it is possible to suppress stray light generated in the non-shielded state.

[0158] As mentioned above, in the non-shading state, such as Figure 13B As shown, a light distribution pattern is obtained by light emitted from the first exit surface 132 of the first lens 130 and the second exit surface 142 of the second lens 140.

[0159] In the light distribution pattern under shading conditions, the illumination of light towards the HV point is suppressed, and the light mainly illuminates the area below the H line. In the light distribution pattern under unshading conditions, the light also illuminates the area near the HV point and the area above the H line. Therefore, the light distribution pattern under shading conditions can be used as a light distribution pattern for low beams, and the light distribution pattern under unshading conditions can be used as a light distribution pattern for high beams.

[0160] Next, the effects of this implementation method will be explained.

[0161] The lighting device 100 of this embodiment includes a light-emitting part 110, a reflector 120, a first lens 130, a second lens 140, a first light-shielding member 150, a second light-shielding member 160, a third light-shielding member 170, and a driving part 180.

[0162] The reflector 120 is disposed above the light-emitting part 110 and reflects the first part L1 of the light emitted from the light-emitting part 110.

[0163] The first lens 130 has a first incident surface 131 into which light L1a reflected by the reflector 120 is incident.

[0164] The second lens 140 is disposed above the first lens 130 in the vertical direction Z. The second lens 140 has a second incident surface 141 for the second portion L2 of the light emitted from the light-emitting part 110 to enter. The horizontal distance E2 between the light-emitting part 110 and the second incident surface 141 is less than the horizontal distance E1 between the light-emitting part 110 and the first incident surface 131.

[0165] The first light-shielding component 150 is disposed between the first lens 130 and the second lens 140 in the vertical direction Z.

[0166] The second light-shielding component 160 is positioned in the front-rear direction X between the position of the light-emitting part 110 and the first lens 130.

[0167] The third light-shielding component 170 is positioned in the front-rear direction X between the position of the light-emitting part 110 and the second lens 140.

[0168] The drive unit 180 can switch between a light-shielding state and a non-light-shielding state by moving the second light-shielding member 160 and the third light-shielding member 170.

[0169] In the light-shielding state, the second light-shielding member 160 blocks a portion of the light L1a from the reflector 120 toward the first incident surface 131, and the third light-shielding member 170 blocks the second portion L2 from the light-emitting member 110 toward the second incident surface 141.

[0170] In the non-shielding state, the second shielding member 160 does not block the light L1a from the reflector 120 toward the first incident surface 131, and the third shielding member 170 does not block the second part L2.

[0171] According to the above-described lighting device 100, the light distribution pattern of the low beam and the light distribution pattern of the high beam can be switched by a light-emitting part 110.

[0172] Furthermore, in the aforementioned lighting device 100, the distance E2 between the second incident surface 141 of the light-emitting unit 110 and the second lens 140 in the front-rear direction X is smaller than the distance E1 between the first incident surface 131 of the light-emitting unit 110 and the first lens 130 in the front-rear direction. Therefore, light emitted upwards and forwards from the light-emitting unit 110 easily enters the second incident surface 141 of the second lens 140. As a result, the light extraction efficiency of the second lens 140 can be improved. Consequently, in the high beam distribution pattern, the luminous intensity near the HV point can be increased.

[0173] Furthermore, a first light-shielding member 150 is provided between the first lens 130 and the second lens 140 in the vertical direction Z. Therefore, in the light-shielding state, light L1b incident on the first lens 130 can be suppressed from entering the second lens 140. Additionally, in the light-shielding state, direct light from the light-emitting unit 110 can be suppressed from entering the second lens 140 from its lower surface 143. Furthermore, in the non-light-shielding state, light L1b and L1c incident on the first lens 130, as well as light L2a incident on the second lens 140, can be suppressed from entering the second lens 130. Thus, stray light generated in both the light-shielding and non-light-shielding states can be suppressed.

[0174] Furthermore, in the light-shielding state, the horizontal distance E3 between the light-emitting part 110 and the second light-shielding member 160 is less than the horizontal distance E4 between the light-emitting part 110 and the third light-shielding member 170. Therefore, the third light-shielding member 170 can suppress the light L1a from the reflector 120 toward the first incident surface 131 of the first lens 130.

[0175] Furthermore, the first lens 130 has a first exit surface 132 located on the opposite side of the first incident surface 131 and an upper surface 133 located between the upper end of the first exit surface 131 and the upper end of the first exit surface 132. The second lens 140 has a second exit surface 142 located on the opposite side of the second incident surface 141 and a lower surface 143 located between the lower end of the second incident surface 141 and the lower end of the second exit surface 142. Moreover, the first light-shielding member 150 covers the upper surface 133 and the lower surface 143. As a result, it is possible to suppress light incident on the first lens 130 from entering the second lens 140, and to suppress light incident on the second lens 140 from entering the first lens 130.

[0176] Furthermore, the area of ​​the first incident surface 131 is larger than the area of ​​the second incident surface 141. Therefore, light emitted from the reflector 120 can be easily captured into the first lens 130.

[0177] Furthermore, the drive unit 180 can switch between the light-shielding state and the non-light-shielding state by rotating the second light-shielding member 160 and the third light-shielding member 170. Therefore, the light-shielding state and the non-light-shielding state can be switched with a simple structure.

[0178] Furthermore, the first light-shielding component 150 is a light-absorbing component. Therefore, it is able to suppress the generation of stray light.

[0179] Furthermore, in the above embodiment, the method by which the drive unit rotates the second and third light-shielding members was described. However, the drive unit can also switch between the light-shielding state and the non-light-shielding state by moving the second and third light-shielding members in the vertical or horizontal direction.

[0180] Furthermore, in the above embodiment, the method by which the driving unit rotates the second and third light-shielding members in the same direction was described. However, the rotation directions of the second and third light-shielding members may also be different.

Claims

1. A lighting device, wherein, have: Light-emitting part; A reflector, which is disposed above the light-emitting part, reflects a first portion of the light emitted from the light-emitting part; A first lens having a first incident surface into which light reflected by the reflector is incident; The second lens is disposed above the first lens in the vertical direction and has a second incident surface for a second portion of the light emitted from the light-emitting part to enter. The distance between the light-emitting part and the second incident surface in the horizontal direction is less than the distance between the light-emitting part and the first incident surface in the horizontal direction. A first light-shielding component is disposed between the first lens and the second lens in the vertical direction; The second light-shielding component is positioned in the horizontal direction between the position of the light-emitting part and the position of the first lens; The third light-shielding component is positioned in the horizontal direction between the position of the light-emitting part and the position of the second lens; The drive unit switches between a light-shielding state and a non-light-shielding state by moving the second light-shielding member and the third light-shielding member. In the light-shielding state, the second light-shielding component blocks a portion of the light from the reflector toward the first incident surface, and the third light-shielding component blocks the second portion of the light from the light-emitting part toward the second incident surface. In the non-shielding state, the second light-shielding component does not block light from the reflector toward the first incident surface, and the third light-shielding component does not block light from the second portion. The drive unit includes a motor and a shaft that is linked to the motor. The second and third light-shielding components are connected to the shaft of the drive unit. The drive unit rotates the shaft via a drive motor, thereby causing the second and third light-shielding components to rotate.

2. The lighting device as claimed in claim 1, wherein, In the light-shielding state, the distance between the light-emitting part and the second light-shielding component in the horizontal direction is less than the distance between the light-emitting part and the third light-shielding component in the horizontal direction.

3. The lighting device as described in claim 1 or 2, wherein, The first lens further comprises: a first exiting surface located on the opposite side of the first incident surface, and an upper surface located between the upper end of the first incident surface and the upper end of the first exiting surface. The second lens further comprises: a second exit surface located on the opposite side of the second incident surface, and a lower surface located between the lower end of the second incident surface and the lower end of the second exit surface. The first light-shielding component covers the upper surface and the lower surface.

4. The lighting device as claimed in claim 1 or 2, wherein, The area of ​​the first incident surface is greater than the area of ​​the second incident surface.

5. The lighting device as claimed in claim 1 or 2, wherein, The drive unit can switch between the shading state and the non-shading state by rotating the second shading member and the third shading member.

6. The lighting device as claimed in claim 1 or 2, wherein, The first light-shielding component is a light-absorbing component.

7. A lighting device, wherein, have: A substrate having an upper surface and a lower surface; A light-emitting part is disposed on the upper surface of the substrate; A reflector is disposed on the upper surface of the substrate in such a way as to cover the light-emitting part, and reflects a first portion of the light emitted from the light-emitting part; The first lens has a first incident surface into which light reflected by the reflector enters, a first exiting surface into which light incident on the first incident surface exits, and an upper surface disposed between the first incident surface and the first exiting surface. The second lens has a second incident surface into which a second portion of the light emitted from the light-emitting portion enters, a second exiting surface into which the light incident on the second incident surface exits, and a lower surface disposed between the second incident surface and the second exiting surface. In a direction from the lower surface of the substrate toward the upper surface of the substrate, the second lens is disposed above the first lens. The distance from the center of the light-emitting portion to the second incident surface is less than the distance from the center of the light-emitting portion to the first incident surface. A first light-shielding component is disposed between the upper surface of the first lens and the lower surface of the second lens; The second light-shielding component is positioned between the position of the light-emitting part and the position of the first lens in the direction from the light-emitting part toward the first lens; The third light-shielding component is positioned between the position of the light-emitting part and the position of the second lens in the direction from the light-emitting part toward the second lens; The drive unit is capable of switching between a light-shielding state and a non-light-shielding state by moving the second light-shielding member and the third light-shielding member. In the light-shielding state, the second light-shielding component blocks a portion of the light from the reflector toward the first incident surface, and the third light-shielding component blocks the second portion of the light from the light-emitting part toward the second incident surface. In the non-shielding state, the second light-shielding component does not block light from the reflector toward the first incident surface, and the third light-shielding component does not block light from the second portion. The drive unit includes a motor and a shaft that is linked to the motor. The second and third light-shielding components are connected to the shaft of the drive unit. The drive unit rotates the shaft via a drive motor, thereby causing the second and third light-shielding components to rotate.

8. A headlight, wherein, Use the lighting device according to any one of claims 1 to 7.

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