Light emitting emblem

Abstract

To provide a light emitting emblem which enables a cover to emit light efficiently while reducing the number of components.SOLUTION: A light emitting emblem 10 includes: a housing 20 having a reflection surface 60; a cover 30 having transmission parts 36, 37 which transmit visible light; and a substrate 40 on which a light source 51 configured to emit the visible light toward the reflection surface 60 is mounted. The housing 20 includes a bottom wall part 22, an outer peripheral wall part 27, and a connection wall part 26. The bottom wall part 22 is provided with a protruding part. The protruding part has a first flat plate part 23 and an inner peripheral wall part 24. The reflection surface 60 includes: a primary reflection surface 61 which is provided in at least one of a peripheral edge 23a of the first flat plate part 23 and the inner peripheral wall part 24 and reflects the visible light toward the outer periphery side of the housing 20; and a secondary reflection surface 65 which is provided at a portion forming the connection wall part 26 and reflects the incident visible light to the transmission part 37 of the cover 30.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a light-emitting emblem.

Background Art

[0002] Patent Document 1 describes an emblem light-emitting device. This emblem light-emitting device includes a housing and an outer lens that covers the opening of the housing and has an emblem attached to its surface. Inside the space defined by the housing and the outer lens, a substrate, a light source mounted on the surface of the substrate on the housing side, and an inner lens provided between the substrate and the housing and covering the substrate and the light source are accommodated.

[0003] The inner lens controls the reflection direction of the light emitted from the light source and emits the light toward the outer lens. According to such an emblem light-emitting device, the periphery of the emblem emits light as the light passes through the outer lens.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in a conventional light-emitting emblem including such an emblem light-emitting device, an inner lens is required to control the reflection direction of light. For this reason, there is a problem that the number of parts increases by the number of inner lenses.

Means for Solving the Problems

[0006] Each aspect of the light-emitting emblem for solving the above problems will be described. [Aspect 1] A housing having an opening that opens outward of the vehicle and a reflecting surface that reflects visible light, a cover that closes the opening and has a transmissive portion that transmits the visible light, and a substrate housed between the housing and the cover and on which a light source that emits the visible light toward the reflecting surface is mounted. The visible light reflected from the housing toward the cover passes through the transmissive portion, causing the cover to emit light. The housing includes a bottom wall portion, an outer peripheral wall portion that forms the opening, and a connecting wall portion that connects the bottom wall portion and the outer peripheral wall portion. The bottom wall portion is provided with a protruding portion that protrudes toward the cover. The protruding portion has a flat plate portion to which the substrate is attached and an inner peripheral wall portion that surrounds the flat plate portion. The reflecting surface is provided on either the periphery of the flat plate portion or the inner peripheral wall portion, and is a primary reflecting surface that is inclined with respect to the optical axis of the light source and reflects the visible light toward the outer peripheral side of the housing. The secondary reflecting surface is provided on a portion that forms the connecting wall portion, is inclined with respect to the optical axis, and reflects the incident visible light toward the transmissive portion provided at the outer edge portion of the cover. The light-emitting emblem includes the primary reflecting surface and the secondary reflecting surface.

[0007] The visible light (hereinafter referred to as light) emitted from the light source is reflected by the reflecting surface of the housing toward the cover. Then, the light incident on the cover is irradiated outward of the vehicle by passing through the transmissive portion. As a result, the cover emits light. Here, according to the above configuration, a part of the light emitted from the light source is reflected by the secondary reflecting surface toward the transmissive portion provided at the outer edge portion of the cover. Thereby, the light from the light source can be efficiently transmitted through the transmissive portion of the outer edge portion.

[0008] However, depending on the emission angle with respect to the optical axis, the light emitted from the light source may be reflected by the housing multiple times before entering the secondary reflection surface. Therefore, there is still room for improvement in terms of efficiently transmitting the light from the light source to the transmission part of the outer edge. In this regard, according to the above configuration, a protrusion to which a substrate is attached is provided on the bottom wall part of the housing. The protrusion is provided with a primary reflection surface that is inclined with respect to the optical axis. Therefore, a part of the light emitted from the light source is reflected toward the outer periphery by the primary reflection surface. This makes it easier for the light to enter the secondary reflection surface. As a result, the light from the light source can be transmitted more efficiently to the transmission part of the outer edge without providing a separate member such as an inner lens that controls the reflection direction of the light.

[0009] Therefore, the number of parts can be reduced while allowing the cover to emit light efficiently. [Aspect 2] The luminous emblem described in [Aspect 1], wherein the primary reflective surface has a first inclined surface and a second inclined surface which have different inclination angles with respect to the optical axis, the first inclined surface being provided on the periphery of the flat plate portion and facing the light source in the axial direction along which the optical axis extends, and reflecting the visible light emitted from the light source along the optical axis toward the secondary reflective surface, and the second inclined surface being provided on the inner wall portion and reflecting the visible light emitted from the light source at an emission angle inclined at a first angle with respect to the optical axis toward the secondary reflective surface.

[0010] According to the above configuration, two light beams having different emission angles from the light source are reflected toward the secondary reflection surface by two primary reflection surfaces, the first inclined surface provided on the periphery of the flat plate portion and the second inclined surface provided on the inner peripheral wall portion. Then, each light beam is reflected toward the transmission portion of the outer peripheral portion by the secondary reflection surface. Therefore, the light from the light source can be transmitted to the transmission portion of the outer peripheral portion more efficiently than when the primary reflection surface is only one of the first inclined surface and the second inclined surface.

[0011] Therefore, the number of parts can be reduced and the cover can emit light more efficiently. [Aspect 3] When the outer circumferential side of the housing is simply referred to as the outer circumferential side, the primary reflective surface has a third inclined surface that has a different inclination angle with respect to the optical axis from the first inclined surface and the second inclined surface, and the third inclined surface is provided on the inner wall portion closer to the outer circumferential side than the second inclined surface, and reflects the visible light emitted from the light source toward the secondary reflective surface at an emission angle inclined at a second angle larger than the first angle with respect to the optical axis.

[0012] According to the above configuration, three light beams having different emission angles from the light source are reflected toward the secondary reflection surface by three primary reflection surfaces, namely, the first inclined surface provided on the periphery of the flat plate portion and the second and third inclined surfaces provided on the inner peripheral wall portion. Then, each light beam is reflected by the secondary reflection surface toward the transmission portion of the outer edge portion. Therefore, the light from the light source can be transmitted to the transmission portion of the outer edge portion more efficiently.

[0013] Therefore, the number of parts can be reduced and the cover can emit light more efficiently. [Aspect 4] When the outer periphery side of the housing is simply referred to as the outer periphery side, the substrate has an opposing portion that faces the flat portion in the axial direction of the optical axis, and an extending portion that extends from the opposing portion further toward the outer periphery than the flat portion, and when the light source is referred to as a first light source, the first light source is attached to the extending portion, and a second light source is attached to the opposing portion for directly emitting the visible light toward the transparent portion provided in the center of the cover, the luminous emblem described in [Aspect 1].

[0014] According to the above configuration, the first light source is provided on the extending portion of the substrate. Therefore, the first light source is closer to the secondary reflection surface than when, for example, the facing portion is disposed at a distance from the flat plate portion and the first light source is provided on the facing portion. This makes it easier for the light emitted from the first light source to directly enter the secondary reflection surface. As a result, the light from the first light source can be more efficiently transmitted through the transmitting portion of the outer edge portion.

[0015] However, as the first light source approaches the secondary reflection surface, it becomes more difficult to efficiently transmit the light of the first light source through the transmission section provided in the center of the cover. In this regard, according to the above configuration, the opposing section of the substrate is provided with a second light source that directly emits light toward the transmission section in the center. This allows the light of the second light source to efficiently transmit through the transmission section in the center.

[0016] Therefore, the cover can be made to emit light more efficiently. According to the above-mentioned configuration, the substrate is provided with an extension, and therefore the surface area of ​​the substrate is increased by the extension, thereby improving the heat dissipation of the substrate. Effect of the Invention

[0017] According to the present invention, it is possible to reduce the number of parts and allow the cover to emit light efficiently. [Brief description of the drawings]

[0018] [Figure 1] FIG. 1 is a front view showing the light-emitting emblem in the first embodiment. [Diagram 2] FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. [Diagram 3] FIG. 3 is an enlarged cross-sectional view showing a main part of FIG. [Figure 4] FIG. 4 is a front view showing the light-emitting emblem in the second embodiment. [Diagram 5] FIG. 5 is a cross-sectional view taken along line 5-5 in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, embodiments of the light-emitting emblem for a vehicle will be described with reference to Figs. In the following description, the front-to-rear direction of the vehicle is referred to as the front-to-rear direction X, and the front and rear in the front-to-rear direction X will be simply referred to as the front and rear. The vehicle width direction of the vehicle will be referred to as the vehicle width direction Y. The up-down direction of the vehicle when the vehicle is positioned on a horizontal plane will be referred to as the up-down direction Z, and the upper and lower sides in the up-to-down direction Z will be simply referred to as the upper and lower sides.

[0020] First Embodiment First, a first embodiment of the light emitting emblem will be described with reference to Figs. 1 to 3. 1 and 2, an exterior panel 91 constituting a front part 90a of a vehicle 90 is provided with a window part 92 that opens forward. A luminous emblem 10 for decorating the exterior panel 91 is attached to the window part 92.

[0021] The outer edge shape of the luminous emblem 10 is circular when viewed from the front. A design surface 10a of the light-emitting emblem 10 is provided with a display area 11 for displaying a logo or the like toward the front of the vehicle, and a background area 12.

[0022] The display area 11 is composed of a main portion 13 that displays, for example, characters, designs, etc., and an annular portion 14 that surrounds the main portion 13. In this embodiment, the main portion 13 represents a pair of straight lines spaced apart in the vertical direction Z. The background area 12 is a portion of the design surface 10a other than the display area 11.

[0023] The luminous emblem 10 has a housing 20, a cover 30, and a substrate 40 on which a plurality of light sources 51 are mounted. Each component will be described in detail below.

[0024] <Housing 20> As shown in FIG. 2, the housing 20 has an opening 21 that opens to the front of the vehicle 90, and a wall portion 20A that forms the opening 21.

[0025] In the following description, the side from the center of the housing 20 toward the outer periphery in the radial direction will be simply referred to as the outer periphery side. The wall 20A is made of a resin material in which white light diffusing particles are dispersed, and is white overall. As the resin material, for example, acrylonitrile-butadiene-styrene copolymer (ABS) resin can be used. As the light diffusing material, for example, metal oxides such as titanium oxide and zinc oxide can be used.

[0026] The inner surface of the wall portion 20A forms a reflecting surface 60 that reflects visible light (hereinafter simply referred to as light). The wall portion 20A has a bottom wall portion 22, an outer peripheral wall portion 27, and a connecting wall portion 26 that connects the bottom wall portion 22 and the outer peripheral wall portion 27 together.

[0027] The bottom wall portion 22 has a first flat plate portion 23 , an inner circumferential wall portion 24 , and a second flat plate portion 25 . The first flat plate portion 23 has a flat plate shape extending in both the vehicle width direction Y and the up-down direction Z, and is located at the center of the bottom wall portion 22 in the up-down direction Z.

[0028] The inner circumferential wall portion 24 extends rearward from the peripheral edge 23 a of the first flat plate portion 23 , and has a rear end side that is bent and inclined toward the outer periphery of the housing 20 . The second flat plate portion 25 extends from the outer circumferential edge of the inner circumferential wall portion 24 toward the outer circumferential side and is continuous with the connecting wall portion 26. The second flat plate portion 25 is in the shape of a flat plate extending in both the vehicle width direction Y and the up-down direction Z.

[0029] The first flat plate portion 23 and the inner peripheral wall portion 24 as a whole form a protruding portion that protrudes forward from the second flat plate portion 25. That is, the first flat plate portion 23 in this embodiment corresponds to the flat plate portion according to the present invention.

[0030] 2, the connecting wall portion 26 rises forward from the outer circumferential edge of the second flat plate portion 25 and extends at an incline with respect to the front-rear direction X. Specifically, the connecting wall portion 26 is inclined toward the outer circumferential side of the housing 20 as it extends forward.

[0031] The outer peripheral wall portion 27 is bent and extends forward from the connecting wall portion 26. The front end of the outer peripheral wall portion 27 defines the opening portion 21. <Cover 30> 1 and 2, the cover 30 constitutes the design surface 10a, and is attached to the housing 20 so as to close the opening 21 from the front. Specifically, the cover 30 is welded to the front end of the outer peripheral wall portion 27 over the entire periphery. As a welding method, for example, ultrasonic welding, laser welding, hot plate welding, etc. can be used.

[0032] The cover 30 has an inner portion 31 and an outer portion 34 located in front of the inner portion 31 . The inner part 31 is a so-called outer lens, and is made of a transparent material that transmits visible light. As the transparent material, for example, an acrylic resin such as polymethylmethacrylate resin (PMMA) or a transparent resin such as polycarbonate (PC) resin can be used. In this embodiment, "transparent" includes not only colorless transparency but also colored transparency (colored transparency).

[0033] A first exposed portion 32 and a second exposed portion 33 are integrally formed on a front surface 31a of the inner portion 31 as convex portions that protrude forward. The first exposed portion 32 is provided at a position corresponding to the main portion 13 of the display area 11 on the design surface 10a.

[0034] The second exposed portion 33 is provided at a position corresponding to the annular portion 14 of the display area 11 on the design surface 10a. The outer portion 34 has a light-shielding portion 35 that blocks light, and light-transmitting portions 36 and 37 that are surrounded by the light-shielding portion 35 and have visible light transmittance.

[0035] The light blocking portion 35 constitutes the background region 12 of the design surface 10a. The light blocking portion 35 is formed from a mixed material obtained by mixing a resin material such as PC resin and a black pigment such as carbon black.

[0036] The transparent portions 36, 37 are communication holes that communicate the inside and outside of the outer portion 34. The transparent portion 36 exposes the first exposed portion 32 toward the front of the vehicle 90 at the center of the cover 30. The transparent portion 37 exposes the second exposed portion 33 toward the front of the vehicle 90 at the outer edge of the cover 30. That is, the display area 11 of the design surface 10a is configured by the transparent portions 36, 37 and the exposed portions 32, 33. Note that the central portion of the cover 30 referred to here is a portion located radially inward from the annular portion 14, and the outer edge of the cover 30 is a portion located radially outward from the central portion.

[0037] Between the cover 30 and the housing 20, a space S in which the substrate 40 is housed is provided. <Substrate 40, light source 51> 1 and 2, the substrate 40 is attached to the first flat plate portion 23 of the housing 20. The substrate 40 is attached to the first flat plate portion 23 in the front-rear direction X with a gap G1 therebetween via a fastening member (not shown).

[0038] The substrate 40 has a flat plate shape extending in both the vehicle width direction Y and the vertical direction Z. In this embodiment, the substrate 40 has a rectangular plate shape having long sides in the vehicle width direction Y (see FIG. 1). A pair of long side portions 40c aligned in the vertical direction Z on the periphery of the substrate 40 are located inside the main portion 13 in the vertical direction Z.

[0039] The light sources 51 are attached to the rear surface 40b of the substrate 40. As the light sources 51, for example, light emitting diodes (LEDs) can be used. As shown in FIG. 1, a plurality of (three in this embodiment) light sources 51 are arranged at intervals in the vehicle width direction Y above the rear surface 40b.

[0040] A plurality of (three in this embodiment) light sources 51 are arranged at intervals in the vehicle width direction Y below the rear surface 40b. As shown in FIG. 2, the multiple light sources 51 all face the peripheral edge 23a of the first flat plate portion 23 in the front-rear direction X.

[0041] 2 and 3, the light source 51 emits light toward the rear reflective surface 60, more specifically, toward the peripheral edge 23a of the first flat plate portion 23. The axial direction in which the optical axis A of the light source 51 extends coincides with the front-rear direction X.

[0042] <Reflective surface 60> Next, the reflecting surface 60 will be described in detail. As shown in Figure 3, the reflective surface 60 has a primary reflective surface 61 provided on the portion constituting the first flat plate portion 23 and the inner circumferential wall portion 24, and a secondary reflective surface 65 provided on the portion constituting the connecting wall portion 26.

[0043] The primary reflecting surface 61 is inclined with respect to the optical axis A, and has a first inclined surface 62, a second inclined surface 63, and a third inclined surface 64 that have different inclination angles from each other. The primary reflection surface 61 is configured as a whole to reflect the light emitted from the light source 51 toward the outer periphery of the housing 20 .

[0044] The first inclined surface 62 is provided on the peripheral edge 23a of the first flat plate portion 23. That is, the first inclined surface 62 faces the light source 51 in the front-rear direction X. The first inclined surface 62 is inclined toward the outer periphery of the housing 20 as it extends rearward. The angle that the first inclined surface 62 forms with the optical axis A is set to an inclination angle α (α>0°) so that the light L1 emitted from the light source 51 along the optical axis A is reflected toward the secondary reflection surface 65. The inclination angle α is preferably set to 45°.

[0045] The second inclined surface 63 and the third inclined surface 64 are provided on the rear end side of the inner circumferential wall portion 24. The second inclined surface 63 is inclined toward the outer periphery of the housing 20 as it extends rearward. The angle that the second inclined surface 63 forms with the optical axis A is set to an inclination angle β that is larger than the inclination angle α (α<β) so that the light L2 emitted from the light source 51 is reflected toward the secondary reflection surface 65 at an emission angle inclined at a first angle θ1 with respect to the optical axis A. The inclination angle β is preferably set to 60°.

[0046] The third inclined surface 64 is inclined from the outer circumferential edge of the second inclined surface 63 and is continuous with the inner surface of the second flat plate portion 25 . The third inclined surface 64 is inclined toward the outer periphery of the housing 20 as it extends rearward. The third inclined surface 64 is set to an inclination angle γ larger than the inclination angle β with respect to the optical axis A so as to reflect the light L3 emitted from the light source 51 toward the secondary reflection surface 65 at an emission angle inclined by a second angle θ2 (θ1<θ2) larger than the first angle θ1 with respect to the optical axis A. The inclination angle γ is preferably set to 75°.

[0047] The secondary reflection surface 65 has a concave surface 66 and a fourth inclined surface 67 inclined with respect to the optical axis A. The secondary reflection surface 65 is configured so as to reflect incident light as a whole toward the transmission portion 37 provided on the outer edge of the cover 30 .

[0048] The concave surface 66 curves and extends forward from the inner surface of the second flat plate portion 25. The radius of curvature of the concave surface 66 is preferably set to, for example, 15 mm. The fourth inclined surface 67 is inclined from the outer peripheral edge of the concave surface 66 and connects to the inner surface of the outer peripheral wall portion 27 .

[0049] The fourth inclined surface 67 is inclined toward the outer periphery of the housing 20 as it extends forward. The inclination angle δ of the fourth inclined surface 67 is preferably set to, for example, 45°. The fourth inclined surface 67 faces the second exposed portion 33 in the front-rear direction X.

[0050] Next, the operation of the first embodiment will be described. As shown in Fig. 3, light emitted from the light source 51 is reflected by the reflective surface 60 of the housing 20 toward the cover 30. The light that enters the cover 30 passes through the transmissive portions 36, 37 and is irradiated toward the front of the vehicle 90. This causes the first exposed portion 32 and the second exposed portion 33 of the cover 30 to emit light. In other words, the display area 11 of the light-emitting emblem 10 emits light. For ease of explanation, the light that enters the transmissive portion 36 is not shown in Fig. 3.

[0051] Here, the reflective surface 60 has a primary reflective surface 61 and a secondary reflective surface 65. Therefore, a part of the light emitted from the light source 51 is reflected by the primary reflective surface 61 toward the outer periphery of the housing 20. This makes it easier for the light to be incident on the secondary reflective surface 65.

[0052] Moreover, the light is reflected by the secondary reflection surface 65 toward the transmission portion 37 provided on the outer edge portion of the cover 30. This allows the light from the light source 51 to be transmitted to the transmission portion 37 efficiently.

[0053] Specifically, the light L1 emitted from the light source 51 along the optical axis A is reflected toward the outer periphery of the housing 20 by the first inclined surface 62 provided on the peripheral edge 23a of the first flat plate portion 23. This makes it easier for the light L1 to be incident on the secondary reflection surface 65. Here, when the inclination angle α of the first inclined surface 62 is set to 45° (inclination angle α=45°), the light L1 is reliably reflected toward the fourth inclined surface 67 of the secondary reflection surface 65. This allows the light L1 to be transmitted through the transmission portion 37 more efficiently.

[0054] Moreover, the light L2 emitted from the light source 51 at an emission angle inclined at the first angle θ1 with respect to the optical axis A is reflected toward the outer periphery of the housing 20 by the second inclined surface 63 provided on the inner peripheral wall portion 24. This makes it easier for the light L2 to be incident on the secondary reflection surface 65. Here, when the inclination angle β of the second inclined surface 63 is set to 60° (inclination angle β=60°), the light L2 emitted from the light source 51 at an emission angle inclined at 15° with respect to the optical axis A (θ1=15°) is reliably reflected toward the concave surface 66 of the secondary reflection surface 65. This allows the light L2 to be transmitted to the transmission portion 37 more efficiently. Furthermore, when the radius of curvature of the concave surface 66 is set to 15 mm, the light L2 is reliably reflected toward the transmission portion 37.

[0055] Moreover, the light L3 emitted from the light source 51 at an emission angle inclined at the second angle θ2 with respect to the optical axis A is reflected toward the outer periphery of the housing 20 by the third inclined surface 64 provided on the inner peripheral wall portion 24. This makes it easier for the light L3 to be incident on the secondary reflection surface 65. Here, when the inclination angle γ of the third inclined surface 64 is set to 75° (inclination angle γ=75°), the light L3 emitted from the light source 51 at an emission angle inclined at 30° with respect to the optical axis A (θ2=30°) is reliably reflected toward the fourth inclined surface 67 of the secondary reflection surface 65. This allows the light L3 to be transmitted through the transmission portion 37 more efficiently.

[0056] Next, the effects of the first embodiment will be described. (1-1) The luminous emblem 10 comprises a housing 20 having a reflective surface 60 that reflects light, a cover 30 that closes an opening 21 and has light-transmitting portions 36, 37 that transmit light, and a substrate 40 that is accommodated between the housing 20 and the cover 30 and has a light source 51 mounted thereon that emits light toward the reflective surface 60. The housing 20 comprises a bottom wall portion 22, an outer peripheral wall portion 27 that constitutes the opening 21, and a connecting wall portion 26 that connects the bottom wall portion 22 and the outer peripheral wall portion 27. The bottom wall portion 22 is provided with a protruding portion that protrudes toward the cover 30, and the protruding portion has a first flat plate portion 23 to which the substrate 40 is attached, and an inner peripheral wall portion 24 that surrounds the first flat plate portion 23. The reflective surface 60 includes a primary reflective surface 61 that is provided on either the peripheral edge 23a of the first flat plate portion 23 or the inner wall portion 24, is inclined with respect to the optical axis A of the light source 51, and reflects light toward the outer periphery of the housing 20, and a secondary reflective surface 65 that is provided in a portion that constitutes the connecting wall portion 26, is inclined with respect to the optical axis A, and reflects incident light toward the transparent portion 37 provided on the outer edge of the cover 30.

[0057] This configuration provides the above-mentioned effects, and as a result, the light from the light source 51 can be transmitted more efficiently to the transmitting portion 37 at the outer edge without the need for a separate member such as an inner lens that controls the direction of reflection of light.

[0058] Therefore, the number of parts can be reduced while allowing the cover 30 to emit light efficiently. (1-2) The primary reflecting surface 61 has a first inclined surface 62 and a second inclined surface 63 which have different inclination angles with respect to the optical axis A. The first inclined surface 62 is provided on the periphery 23a of the first flat plate portion 23, faces the light source 51 in the front-rear direction X, and reflects light L1 emitted from the light source 51 along the optical axis A toward the secondary reflecting surface 65. The second inclined surface 63 is provided on the inner circumferential wall portion 24, and reflects light L2 emitted from the light source 51 at an emission angle inclined at a first angle θ1 with respect to the optical axis A toward the secondary reflecting surface 65.

[0059] According to this configuration, the two light beams L1 and L2 emitted from the light source 51 and having different emission angles are reflected toward the secondary reflection surface 65 by the two primary reflection surfaces 61, that is, the first inclined surface 62 provided on the periphery 23a of the first flat plate portion 23 and the second inclined surface 63 provided on the inner peripheral wall portion 24. Then, each of the light beams L1 and L2 is reflected toward the transmission portion 37 of the outer edge portion by the secondary reflection surface 65. Therefore, compared to a case where the primary reflection surface 61 is only one of the first inclined surface 62 and the second inclined surface 63, the light beams L1 and L2 from the light source 51 can be transmitted to the transmission portion 37 of the outer edge portion more efficiently.

[0060] Therefore, the number of parts can be reduced and the cover 30 can emit light more efficiently. (1-3) The primary reflecting surface 61 has a third inclined surface 64 that has a different inclination angle with respect to the optical axis A from the first inclined surface 62 and the second inclined surface 63. The third inclined surface 64 is provided on the inner circumferential wall portion 24 on the outer circumferential side of the second inclined surface 63, and reflects the light L3 emitted from the light source 51 toward the secondary reflecting surface 65 at an emission angle inclined at a second angle θ2 that is larger than the first angle θ1 with respect to the optical axis A.

[0061] According to this configuration, the three light beams L1, L2, and L3 emitted from the light source 51 and having different emission angles are reflected toward the secondary reflection surface 65 by the three primary reflection surfaces 61, namely, the first inclined surface 62 provided on the periphery 23a of the first flat plate portion 23 and the second inclined surface 63 and the third inclined surface 64 provided on the inner circumferential wall portion 24. Then, each of the light beams L1, L2, and L3 is reflected by the secondary reflection surface 65 toward the transmission portion 37 of the outer edge portion. Therefore, the light beams L1, L2, and L3 from the light source 51 can be transmitted through the transmission portion 37 of the outer edge portion more efficiently.

[0062] Therefore, the number of parts can be reduced and the cover 30 can emit light more efficiently. <Second embodiment> Next, a second embodiment of the luminous emblem will be described with a focus on the differences from the first embodiment, with reference to Figures 4 and 5. In the second embodiment, the same or corresponding configurations as those in the first embodiment will be marked with a symbol "1**", which is obtained by adding "100" to each symbol "**" in the first embodiment, to omit redundant explanations.

[0063] <Luminous Emblem 110> As shown in FIG. 4, a design surface 110a of the light emitting emblem 110 is provided with a display area 111 for displaying a logo or the like toward the front of the vehicle 190, and a background area 112.

[0064] The display area 111 is composed of a main portion 113 and an annular portion 114 surrounding the main portion 113. In this embodiment, the main portion 113 represents the English letter "A." The background area 112 is a portion of the design surface 110a other than the display area 111.

[0065] The light-emitting emblem 110 includes a housing 120, a cover 130, and a substrate 140 on which a plurality of first light sources 151 and second light sources 152 are mounted. <Housing 120> As shown in FIG. 5, the wall portion 120A has a bottom wall portion 122, an outer peripheral wall portion 127, and a connecting wall portion 126.

[0066] The bottom wall portion 122 has a first flat plate portion 123, an inner peripheral wall portion 124, and a second flat plate portion 125. The first flat plate portion 123 and the inner peripheral wall portion 124 as a whole form a protruding portion that protrudes forward from the second flat plate portion 125. That is, the first flat plate portion 123 in this embodiment corresponds to the flat plate portion according to the present invention.

[0067] <Cover 130> As shown in FIGS. 4 and 5, the cover 130 has an inner portion 131 and an outer portion 134 located in front of the inner portion 131.

[0068] A first exposed portion 132 and a second exposed portion 133 are integrally formed on a front surface 131a of the inner portion 131 as convex portions that protrude forward. The first exposed portion 132 is provided at a position corresponding to the main portion 113 of the display area 111 on the design surface 110a.

[0069] The second exposed portion 133 is provided at a position corresponding to the annular portion 114 of the display area 111 on the design surface 110a. <Substrate 140, first light source 151, second light source 152> 5, the substrate 140 is attached to the first flat plate portion 123 of the housing 120. The substrate 140 is attached to the first flat plate portion 123 with no gap therebetween in the front-rear direction X in this embodiment.

[0070] The substrate 140 has a flat plate shape extending in both the vehicle width direction Y and the up-down direction Z. In this embodiment, the substrate 140 has a rectangular plate shape having a long side in the vehicle width direction Y (see FIG. 4). The substrate 140 has a facing portion 141 facing the first flat plate portion 123 in the front-rear direction X, and an extending portion 142 extending from the facing portion 141 toward the outer periphery of the first flat plate portion 123 .

[0071] The facing portion 141 faces the first exposed portion 132 in the front-rear direction X with a gap G2 therebetween. A plurality of first light sources 151 (two in this embodiment) are attached to a portion of the rear surface 140b of the substrate 140 that constitutes the extension portion 142.

[0072] The multiple first light sources 151 all face the second flat plate portion 125 in the front-rear direction X. The multiple first light sources 151 emit light toward the rear reflective surface 160, more specifically, toward the inner circumferential wall portion 124 (primary reflective surface 161), the second flat plate portion 125, and the connecting wall portion 126 (secondary reflective surface 165). The axial direction in which the optical axis (not shown) of the first light source 151 extends coincides with the front-rear direction X.

[0073] A plurality of second light sources 152 (two in this embodiment) are attached to a portion of the front surface 140a of the substrate 140 that constitutes the facing portion 141. The second light source 152 faces the first exposed portion 132 in the front-rear direction X. The second light source 152 emits light directly toward the transmission portion 136 provided in the center of the cover 130. The axial direction in which the optical axis (not shown) of the second light source 152 extends coincides with the front-rear direction X.

[0074] Next, the effects of the second embodiment will be described. (2-1) The substrate 140 has a facing portion 141 that faces the first flat plate portion 123 in the front-rear direction X, and an extending portion 142 that extends from the facing portion 141 to the outer periphery side beyond the first flat plate portion 123.

[0075] According to this configuration, the substrate 140 is provided with the extension portion 142. Therefore, the surface area of ​​the substrate 140 is increased by the amount of the extension portion 142. Therefore, the heat dissipation property of the substrate 140 can be improved.

[0076] (2-2) The first light source 151 is attached to the extending portion 142. The facing portion 141 is attached to a second light source 152 that emits light directly toward the transmitting portion 136 provided in the center of the cover .

[0077] According to this configuration, the first light source 151 is provided on the extending portion 142 of the substrate 140. Therefore, the first light source 151 is closer to the secondary reflection surface 165 than when, for example, the facing portion 141 is disposed at a distance from the first flat plate portion 123 and the first light source 151 is provided on the facing portion 141. This makes it easier for the light emitted from the first light source 151 to be directly incident on the secondary reflection surface 165. As a result, the light from the first light source 151 can be more efficiently transmitted to the transmission portion 137 on the outer edge portion.

[0078] However, as the first light source 151 approaches the secondary reflection surface 165, it becomes more difficult to efficiently transmit the light of the first light source 151 to the transmission portion 136 provided in the center of the cover 130. In this regard, according to the above configuration, the facing portion 141 of the substrate 140 is provided with the second light source 152 that directly emits light toward the transmission portion 136 in the center. This allows the light of the second light source 152 to efficiently transmit to the transmission portion 136 in the center.

[0079] Therefore, the cover 130 can emit light more efficiently. <Example of change> The above embodiment can be modified as follows: The above embodiment and the following modifications can be combined with each other to the extent that no technical contradiction occurs.

[0080] The light-shielding portion 35 is not limited to being formed from a mixed material obtained by mixing a resin material, such as PC resin, with a black pigment, such as carbon black, as exemplified in the above embodiment, but may be formed by applying a light-shielding coating or plating to the surface of a base material made of a resin material, such as PC resin or ABS resin.

[0081] The housing 20, 120 is not limited to being made of a resin material in which white light diffusing particles are dispersed, as exemplified in the above embodiment. For example, the housing may be made by applying a coating film in which white light diffusing particles are dispersed to the inner surface of a wall portion made of a resin material.

[0082] In the first embodiment, the luminous emblem 10 having three inclined surfaces 62, 63, 64 as the primary reflective surface 61 is exemplified, but the number of primary reflective surfaces 61 is not limited to three and may be changed as appropriate. For example, an inclined surface having an inclination angle with respect to the optical axis A greater than the inclination angle γ may be provided on the outer circumferential side of the third inclined surface 64. Also, either the second inclined surface 63 or the third inclined surface 64 may be omitted. When the second inclined surface 63 is omitted, the concave surface 66 can be omitted from the secondary reflective surface 65. [Explanation of symbols]

[0083] 10,110…Luminous emblem 20,120…Housing 21...Opening 22,122…Bottom wall 23,123…1st flat plate part 23a…periphery 24,124…Inner peripheral wall 26,126…Connecting wall section 27,127...Outer peripheral wall 30,130…Cover 36,136...transparent part 37,137...transparent part 40,140…Substrate 51...Light source 60,160…reflective surface 61,161…Primary reflective surface 62...First slope 63...Second slope 64...Third slope 65,165…Secondary reflective surface 90,190…Vehicle 141…Facing part 142...Extending part 151...1st light source 152…Second light source α,β,γ,δ…Inclination angle θ1…first angle θ2…Second angle A...Optical axis L1, L2, L3...Light X…Anteroposterior direction

Claims

1. a housing having an opening that opens toward the outside of the vehicle and a reflective surface that reflects visible light; a cover that covers the opening and has a transmission portion that transmits the visible light; a substrate that is accommodated between the housing and the cover and has a light source mounted thereon to emit the visible light toward the reflective surface, A light-emitting emblem in which the cover emits light when the visible light reflected from the housing toward the cover passes through the transmission portion, the housing includes a bottom wall portion, an outer peripheral wall portion that defines the opening, and a connecting wall portion that connects the bottom wall portion and the outer peripheral wall portion, The bottom wall portion is provided with a protrusion that protrudes toward the cover, the protrusion has a flat plate portion to which the substrate is attached and an inner peripheral wall portion surrounding the flat plate portion, The reflective surface is a primary reflection surface provided on either a peripheral edge of the flat plate portion or the inner peripheral wall portion, the primary reflection surface being inclined with respect to an optical axis of the light source and reflecting the visible light toward an outer periphery of the housing; A secondary reflection surface is provided in a portion constituting the connecting wall portion, is inclined with respect to the optical axis, and reflects the incident visible light toward the transmission portion provided on the outer edge of the cover. Luminous emblem.

2. the primary reflecting surface has a first inclined surface and a second inclined surface having different inclination angles with respect to the optical axis, the first inclined surface is provided on a periphery of the flat plate portion, faces the light source in an axial direction along which the optical axis extends, and reflects the visible light emitted from the light source along the optical axis toward the secondary reflection surface; the second inclined surface is provided on the inner circumferential wall portion and reflects the visible light emitted from the light source at an emission angle inclined at a first angle with respect to the optical axis toward the secondary reflection surface. The luminous emblem according to claim 1.

3. When the outer circumferential side of the housing is simply referred to as the outer circumferential side, the primary reflection surface has a third inclined surface having an inclination angle with respect to the optical axis different from that of the first inclined surface and the second inclined surface, the third inclined surface is provided on the inner circumferential wall portion on an outer circumferential side of the second inclined surface, and reflects the visible light emitted from the light source at an emission angle inclined at a second angle larger than the first angle with respect to the optical axis toward the secondary reflection surface. The luminous emblem according to claim 2.

4. When the outer circumferential side of the housing is simply referred to as the outer circumferential side, the substrate has a facing portion facing the flat portion in an axial direction of the optical axis, and an extending portion extending from the facing portion toward an outer periphery of the flat portion, When the light source is a first light source, The first light source is attached to the extension portion, A second light source is attached to the facing portion, and the second light source directly emits the visible light toward the transmission portion provided in the center of the cover. The luminous emblem according to claim 1.

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