Vehicle lighting fixture

Abstract

To provide a vehicle lighting fixture which can make a light emitting part inconspicuous with respect to the surroundings when no light is emitted.SOLUTION: A vehicle light fixture comprises: a light source; a light emitting unit for emitting light of the light source to the front side; an inner panel disposed on the front side of the light emitting unit and covering a part of the light emitting unit; and an outer lens disposed on the front side of the light emitting unit and the inner panel, and covering the light emitting unit and the inner panel. A color of the front side of the inner panel is set so that the contrast ratio between the light emitting unit and the inner panel, when viewed from the front side, becomes a reference value or less.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a vehicle lamp. [Background technology]

[0002] 2. Description of the Related Art A vehicle lamp including a light source, a light emitting unit that emits light from the light source to the front side, and an outer lens disposed in front of the light emitting unit is known (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-154949 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned vehicle lamp, it is required that the light-emitting portion is made inconspicuous to the surroundings when not emitting light.

[0005] The present invention has been made in view of the above, and has an object to provide a vehicle lamp capable of making a light-emitting portion inconspicuous to the surroundings when not emitting light. [Means for solving the problem]

[0006] The vehicle lamp of the present invention comprises a light source, a light-emitting section that emits light from the light source to the front side, an inner panel that is arranged on the front side of the light-emitting section and covers a part of the light-emitting section, and an outer lens that is arranged on the front side of the light-emitting section and the inner panel and covers the light-emitting section and the inner panel, and the color of the front side of the inner panel is set so that the contrast ratio between the light-emitting section and the inner panel when viewed from the front side is below a reference value. Effect of the Invention

[0007] According to the present invention, the light emitting portion can be made inconspicuous to the surroundings when not emitting light. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a front view showing a schematic diagram of an example of a vehicle lamp according to the present embodiment. [Diagram 2] FIG. 2 is a diagram showing a configuration along the cross section AA in FIG. [Diagram 3] FIG. 3 is a diagram showing an example of the operation of the vehicle lamp according to this embodiment. [Figure 4] FIG. 4 is a diagram showing an example of the operation of the vehicular lamp according to this embodiment. [Diagram 5] FIG. 5 is a diagram illustrating a schematic view of another example of a vehicle lamp according to the present embodiment. [Figure 6] FIG. 6 is a diagram illustrating a schematic view of another example of a vehicle lamp according to the present embodiment. [Figure 7] FIG. 7 is a diagram illustrating a schematic view of another example of a vehicle lamp according to the present embodiment. [Figure 8] FIG. 8 is a diagram showing an example of the operation of the vehicle lamp according to this embodiment. [Figure 9] FIG. 9 is a diagram showing an example of the operation of the vehicle lamp according to this embodiment. [Figure 10] FIG. 10 is a diagram showing another example of the light-emitting section. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of a vehicle lamp according to the present invention will be described with reference to the drawings. Note that the present invention is not limited to this embodiment. In addition, the components in the following embodiments include those that are replaceable and easy for a person skilled in the art, or those that are substantially the same. In the following description, the front-rear, up-down, left-right directions are directions in a vehicle-mounted state in which the vehicle lamp is mounted on a vehicle, and indicate directions when the vehicle is viewed from the driver's seat in the traveling direction of the vehicle. Note that in this embodiment, the up-down direction is parallel to the vertical direction, and the left-right direction is horizontal. In this embodiment, the front and rear directions are directions in a state in which the vehicle is mounted on a vehicle (vehicle-mounted state). For example, when mounted on the front of the vehicle, the front is the front direction (front side), and the rear is the rear direction (rear side).

[0010] Fig. 1 is a front view showing a schematic diagram of an example of a vehicle lamp according to the present embodiment. Fig. 2 is a diagram showing a configuration along the AA cross section in Fig. 1. In Fig. 1, a part of the outer lens 50 is omitted so that the inside can be seen.

[0011] 1 and 2, a vehicle lamp 100 according to this embodiment is mounted, for example, on the front of a vehicle. The vehicle lamp 100 includes a light source 10, a light-emitting unit 20, an inner panel 30, an inner housing 40, an outer lens 50, and an outer housing 60.

[0012] The light source 10 may be, for example, a semiconductor light source such as an LED, a laser light source, or the like. The light source 10 has a light emitting surface 11 that emits light. The light source 10 is mounted on a circuit board 12. One or more light sources 10 may be provided.

[0013] The light-emitting unit 20 transmits light from the light source 10 and emits the light to the front side. The light-emitting unit 20 is, for example, plate-shaped. The light-emitting unit 20 has an incident surface 21 and an exit surface 22. The light-emitting unit 20 is formed using a transparent resin material such as acrylic resin, PC (polycarbonate), PMMA (polymethylmethacrylate, methacrylic resin), etc. The light-emitting unit 20 is provided with a light diffusion unit 25, for example, textured. The light diffusion unit 25 does not necessarily have to be provided.

[0014] The inner panel 30 is disposed on the front side of the light-emitting unit 20. The inner panel 30 is disposed so as to cover a part of the front side of the light-emitting unit 20. The inner panel 30 has an opening 31. When viewed from the front side, the emission surface 22 of the light-emitting unit 20 is exposed from the opening 31. The color of the front side of the inner panel 30 is set so that the contrast ratio between the light-emitting unit 20 and the inner panel 30 is equal to or less than a reference value when the light-emitting unit 20 and the inner panel 30 are viewed directly from the front side without the outer lens 50. The contrast ratio can be the maximum luminance / minimum luminance value between the light-emitting unit 20 and the inner panel 30. The reference value of the contrast ratio can be, for example, 1 to 3, more preferably 1.5 to 2.5. The reference value may be a value outside the above range. The reference value can be set, for example, by producing a prototype of a vehicle lamp and performing a test or the like, or by performing a simulation or the like. By setting the contrast ratio between the light-emitting section 20 and the inner panel 30 when viewed from the front to a reference value or less, the light-emitting section 20 can be made inconspicuous relative to the inner panel 30 when viewed from the front.

[0015] In this embodiment, the color of the front side of the inner panel 30 may be, for example, gray. Note that the color of the front side of the inner panel 30 is not limited to gray and may be another color. The color of the front side of the inner panel 30 may be set according to the color of the surroundings of the vehicle lamp 100, for example.

[0016] When setting the color of the front side of the inner panel 30, for example, it is possible to set an appropriate color by adjusting the brightness higher or lower with respect to a reference color (reference color). For example, when the light-emitting unit 20 has a light diffusion unit 25, the brightness of the light-emitting unit 20 when viewed from the front side is higher than when the light-diffusing unit 25 is not present. In this case, in order to set the contrast ratio between the light-emitting unit 20 and the inner panel 30 to a reference value or less, the color of the front side of the inner panel 30 can be set so that the brightness is higher with respect to the reference color.

[0017] The inner housing 40 is disposed inside the outer housing 60 and holds the circuit board 12 , the light emitting portion 20 and the inner panel 30 .

[0018] The outer lens 50 transmits light emitted from the emission surface 22 of the light-emitting unit 20 and emits the light to the front side. The outer lens 50 is disposed on the front side of the light-emitting unit 20 and the inner panel 30. The outer lens 50 is disposed in a state where it covers the front sides of the light-emitting unit 20 and the inner panel 30.

[0019] The outer lens 50 is formed so that the light transmittance is, for example, 10% or more and 50% or less. By making the light transmittance of the outer lens 50 50% or less, the back side of the outer lens 50 can be blurred, so that the light emitting unit 20 can be made less noticeable against the surrounding inner panel 30. By making the light transmittance 10% or more, it is possible to ensure brightness when viewed from the front side when the light source 10 is turned on. As the outer lens 50, a so-called smoke lens can be used. The outer lens 50 can be, for example, the same color as the inner panel 30. Note that the outer lens 50 does not have to be the same color as the inner panel 30.

[0020] The outer housing 60 holds the light source 10, the light emitting portion 20, the inner panel 30, the inner housing 40 and the outer lens 50.

[0021] Next, the operation of the vehicle lamp 100 configured as described above will be described. Figures 3 and 4 are diagrams showing an example of the operation of the vehicle lamp 100 according to this embodiment. When the light source 10 is turned on, light is emitted from the light-emitting surface 11. The light emitted from the light-emitting surface 11 passes through the light-emitting unit 20 and is emitted to the front side. The light emitted from the light-emitting unit 20 passes through the outer lens 50 and is emitted to the front side. Due to this light, when the vehicle lamp 100 is viewed from the front side, as shown in Figure 3, the light-emitting portion 51 corresponding to the light-emitting unit 20 is displayed in a lit state.

[0022] When the light source 10 is turned off from this state, the light from the light-emitting portion 51 goes out, as shown in Fig. 4. At this time, the contrast ratio between the light-emitting unit 20 and the inner panel 30 when viewed from the front side is equal to or less than a reference value, so the light-emitting unit 20 does not stand out against the inner panel 30. In addition, an outer lens 50 formed with a light transmittance of 10% or more and 50% or less is disposed on the front side of the light-emitting unit 20 and the inner panel 30. Therefore, when the vehicle lamp 100 is viewed from the front side, the light-emitting unit 20 is inconspicuous to the extent that it cannot be visually distinguished from the surroundings.

[0023] As described above, the vehicle lamp 100 of this embodiment comprises a light source 10, a light-emitting unit 20 that emits light from the light source 10 to the front side, an inner panel 30 that is arranged on the front side of the light-emitting unit 20 and covers part of the light-emitting unit 20, and an outer lens 50 that is arranged on the front side of the light-emitting unit 20 and the inner panel 30 and covers at least the light-emitting unit 20 and the inner panel 30, and the color of the inner panel 30 is set so that the contrast between the light-emitting unit 20 and the inner panel 30 when viewed from the front side is below a reference value.

[0024] With this configuration, the contrast ratio between the light-emitting unit 20 and the inner panel 30 when viewed from the front is set to a reference value or less, so that the light-emitting unit 20 can be made inconspicuous relative to the inner panel 30 when viewed from the front. This makes it possible to make the light-emitting unit 20 inconspicuous relative to the surroundings when not emitting light.

[0025] In the vehicle lamp 100 according to this embodiment, the outer lens 50 is set so that the light transmittance is equal to or greater than 10% and equal to or less than 50%.

[0026] With this configuration, by setting the light transmittance of the outer lens 50 to 50% or less, the back side of the outer lens 50 can be blurred, making the light-emitting unit 20 less noticeable against the surrounding inner panel 30. By setting the light transmittance to 10% or more, it is possible to ensure brightness when viewed from the front side when the light source 10 is turned on.

[0027] In the vehicle lamp 100 according to this embodiment, the color of the inner panel 30 is set by adjusting the brightness with respect to a reference color.

[0028] With this configuration, the color of the inner panel 30 can be appropriately set according to the contrast ratio with the light-emitting section 20.

[0029] In the vehicle lamp 100 according to this embodiment, the light-emitting section 20 has a light diffusion section 25, and the color of the inner panel 30 is set so that the brightness relative to the reference color is higher than when the light diffusion section 25 is not provided.

[0030] When the light-emitting unit 20 has the light diffusion unit 25, the light-emitting unit 20 has a higher brightness when viewed from the front side compared to when it does not have the light diffusion unit 25. According to this configuration, the color is set so that the lightness relative to the reference color is higher compared to when the light diffusion unit 25 is not provided, so that the color of the inner panel 30 can be appropriately set.

[0031] In the vehicle lamp 100 according to this embodiment, the light emitting section 20 is plate-shaped.

[0032] According to this configuration, in a configuration in which a plate-shaped light-emitting section 20 is provided, the light-emitting section 20 can be made inconspicuous against the inner panel 30 when viewed from the front, so that the light-emitting section 20 can be made inconspicuous to the surroundings when not emitting light.

[0033] 5 to 7 are diagrams showing another example of the vehicle lamp according to the present embodiment. In FIG. 5, a part of the outer lens 150 is omitted so that the inside can be seen. The vehicle lamp 200 shown in FIG. 5 to FIG. 7 is an example of a vehicle headlamp provided, for example, at the front of a vehicle. In the vehicle lamp 200, a rod-shaped light emitting unit 120 is used. The vehicle lamp 200 includes a light source 110, a light emitting unit 120, an inner panel 130, an inner housing 140, an outer lens 150, an outer housing 160, and a lamp unit 170. Examples of the lamp unit 170 include a low beam unit that irradiates a low beam ahead of the vehicle and a high beam unit that irradiates a high beam ahead of the vehicle.

[0034] The light-emitting unit 120 guides light from the light source 110 and emits the light to the front side. The light-emitting unit 120 has an incident surface 121, a prism portion 122, and an exit surface 123. The incident surface 121 is disposed at an end of the light-emitting unit 120 in the longitudinal direction. Light from the light source 110 is incident on the incident surface 121. The prism portion 122 is disposed on the rear side of the light-emitting unit 120, and internally reflects the light incident from the incident surface 121 to the front side. The exit surface 123 is disposed on the front side of the light-emitting unit 120, and emits the light internally reflected by the prism portion 122 to the front side.

[0035] The inner panel 130 is disposed on the front side of the light-emitting unit 120. The inner panel 130 has an opening 131. The opening 131 exposes a part of the emission surface 123 of the light-emitting unit 120 when viewed from the front side. The color of the front side of the inner panel 130 is set so that the contrast ratio between the light-emitting unit 120 and the inner panel 130 when viewed from the front side is equal to or less than a reference value. With this configuration, the light-emitting unit 120 can be made inconspicuous relative to the inner panel 130 when viewed from the front.

[0036] The inner housing 140 supports the light emitting portion 120 and the inner panel 130 .

[0037] The outer lens 150 is disposed on the front side of the light emitting unit 120 and the inner panel 130. The outer lens 50 can be, for example, of the same color as the inner panel 130. The outer lens 150 transmits light emitted from a portion of the emission surface 123 of the light emitting unit 120 exposed to the opening 131 and emits the light to the front side. The outer lens 150 is disposed in a state of covering the front sides of the light emitting unit 120 and the inner panel 130. The outer lens 50 is formed so that the light transmittance is, for example, 10% or more and 50% or less. With this configuration, the back side of the outer lens 50 can be blurred, so that the light emitting unit 120 can be made less noticeable compared to the surrounding inner panel 130.

[0038] Next, the operation of the vehicle lamp 200 configured as described above will be described. Fig. 8 and Fig. 9 are diagrams showing an example of the operation of the vehicle lamp 200 according to this embodiment. By turning on the light source 110, light is emitted from the light emitting surface 111. The light emitted from the light emitting surface 111 enters the light emitting unit 120 from the entrance surface 121, is internally reflected by the prism unit 122, and is emitted to the front side from the exit surface 123. The light emitted from the light emitting unit 120 passes through the outer lens 150 and is emitted to the front side. Due to this light, when the vehicle lamp 200 is viewed from the front side, as shown in Fig. 8, the light emitting portion 151 corresponding to the light emitting unit 120 is displayed in a lit state.

[0039] When the light source 110 is turned off from this state, the light of the light-emitting portion 151 goes out, as shown in Fig. 9. At this time, the contrast ratio between the light-emitting portion 120 and the inner panel 130 when viewed from the front side is equal to or less than a reference value, so the light-emitting portion 120 does not stand out against the inner panel 130. In addition, an outer lens 150 having a light transmittance of 10% or more and 50% or less is disposed on the front side of the light-emitting portion 120 and the inner panel 130. Therefore, when the vehicle lamp 200 is viewed from the front side, the light-emitting portion 120 is inconspicuous to the extent that it cannot be visually distinguished from the surroundings.

[0040] As described above, the vehicle lamp 200 of this embodiment comprises a light source 110, a light-emitting section 120 that emits light from the light source 110 to the front side, an inner panel 130 that is arranged on the front side of the light-emitting section 120 and covers a portion of the light-emitting section 120, and an outer lens 150 that is arranged on the front side of the light-emitting section 120 and the inner panel 130 and covers at least the light-emitting section 120 and the inner panel 130, and the color of the inner panel 130 is set so that the contrast between the light-emitting section 120 and the inner panel 130 is below a reference value when viewed from the front side.

[0041] With this configuration, the contrast ratio between the light-emitting unit 120 and the inner panel 130 when viewed from the front is set to a reference value or less, so that the light-emitting unit 120 can be made inconspicuous relative to the inner panel 130 when viewed from the front. This makes it possible to make the light-emitting unit 120 inconspicuous relative to its surroundings when not emitting light.

[0042] In the vehicle lamp 200 according to this embodiment, the light emitting section 120 is rod-shaped.

[0043] According to this configuration, in a configuration in which a rod-shaped light-emitting unit 120 is provided, the light-emitting unit 120 can be made inconspicuous against the inner panel 130 when viewed from the front, so that the light-emitting unit 120 can be made inconspicuous to the surroundings when not emitting light.

[0044] The technical scope of the present invention is not limited to the above-mentioned embodiment, and can be modified as appropriate without departing from the spirit of the present invention. For example, in the above-mentioned embodiment, the plate-shaped light-emitting unit 20 and the rod-shaped light-emitting unit 120 are used as examples, but the present invention is not limited to these configurations. For example, a block-shaped light-emitting unit as shown below may be provided.

[0045] FIG. 10 is a diagram showing another example of the light emitting unit. The light emitting unit 220A shown in FIG. 10(A) has, as the configuration of the incident surface side, a first incident surface 221A facing the light emitting surface 11 of the light source 10, a second incident surface 222A surrounding the periphery of the first incident surface 221A, and a reflecting surface 223A that reflects the light incident from the second incident surface 222A forward. The light emitted from the light emitting surface 11 is incident from the first incident surface 221A and the second incident surface 222A. The light incident on the first incident surface 221A and the light incident from the second incident surface 222A and reflected by the reflecting surface 223A are emitted from the exit surface 224A. The exit surface 224A may be configured to be divided into a plurality of surfaces, for example.

[0046] The light-emitting unit 220B shown in FIG. 10(B) has an incident surface 221B and an exit surface 222B. The incident surface 221B is planar. Light emitted from the light-emitting surface 11 enters from the incident surface 221B. The light incident on the incident surface 221B is emitted from the exit surface 222B. The exit surface 222B may be divided into a plurality of surfaces, for example.

[0047] The light-emitting unit 220C shown in FIG. 10(C) has an incident surface 221C and an exit surface 222C. The incident surface 221C has a sawtooth shape in a side view, and forms, for example, a Fresnel lens. Light emitted from the light-emitting surface 11 enters from the incident surface 221C. The light that enters the incident surface 221C is emitted from the exit surface 222C. The exit surface 222C may be configured to be divided into, for example, a plurality of surfaces. [Explanation of symbols]

[0048] 10,110...light source, 11,111...light emitting surface, 12...circuit board, 20,120...light emitting portion, 21,121...entrance surface, 22,123...exit surface, 25...light diffusion portion, 30,130...inner panel, 40,140...inner housing, 50,150...outer lens, 51,151...light emitting portion, 60,160...outer housing, 100,200...vehicle lamp, 122...prism portion, 131...opening

Claims

1. A light source; A light emitting unit that emits light from the light source to a front side; an inner panel disposed on a front side of the light emitting unit and covering a part of the light emitting unit; an outer lens that is disposed on a front side of the light emitting unit and the inner panel and covers the light emitting unit and the inner panel; Equipped with The color of the front side of the inner panel is set so that the contrast ratio between the light emitting portion and the inner panel is equal to or less than a reference value when viewed from the front side. Vehicle lighting fixtures.

2. The outer lens is set so that the light transmittance is 10% or more and 50% or less.

2. A vehicle lamp according to claim 1.

3. The color of the inner panel is set by adjusting the brightness with respect to a reference color.

2. A vehicle lamp according to claim 1.

4. The light emitting section has a light diffusing section, The color of the inner panel is set so that the brightness of the inner panel with respect to the reference color is higher than that of a case in which the light diffusion portion is not provided.

4. A vehicle lamp according to claim 3.

5. The light emitting portion is plate-shaped.

2. A vehicle lamp according to claim 1.

6. The light emitting portion is rod-shaped.

2. A vehicle lamp according to claim 1.

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