Lighting lamps and lighting fixtures

Abstract

To provide an illumination lamp which can brightly light not only in a front direction of a translucent cover but also a wide range as seen in a side surface direction, and to provide a lighting device.SOLUTION: An illumination lamp according to the invention includes: an illumination lamp body having a light source and a substrate mounted with the light source; and a translucent cover having a dome part which covers the emission surface side of the illumination lamp body and a cover side part which extends oriented to the illumination lamp body side from an outer edge of the dome part, and configured to be attachable to the illumination lamp body. A thickness of the cover side part is smaller than or equal to a thickness of the dome part.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a lighting lamp and a lighting fixture.

Background Art

[0002] Conventionally, a lighting fixture including a lighting lamp using a GX53 base and a socket to which the lighting lamp is attached is known (Patent Document 1). The lighting lamp includes a lighting lamp body having LEDs and a translucent cover covering the emission surface side of the lighting lamp body. Lamp pins provided on the lighting lamp body are inserted into the socket and rotated along the circumferential direction with respect to the socket, so that the lighting lamp is configured to be electrically connected to the socket.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The translucent cover of a conventional GX53-type lighting lamp, including the lighting lamp of Patent Document 1, has a flat diffusion surface in order to irradiate strong light toward the front while alleviating the granularity of the highly directional light emitted from the LEDs. However, such a lighting lamp with a flat diffusion surface has a problem that light cannot be sufficiently diffused in the side direction of the translucent cover. For this reason, in a conventional GX53-type lighting lamp, for example, as shown in FIG. 10, when the lighting lamp 50 is used in an application where the periphery of the lighting lamp 50 is surrounded by a translucent panel 4 or the like and the entire translucent panel 4 is dimly lit, the region RA on the rear side of the translucent cover of the lighting lamp 50 becomes dark, which may impair the design.

[0005] The present invention has been made in view of the above problems, and its objective is to provide an illumination lamp and lighting fixture that can brightly illuminate not only the front direction of a translucent cover but also a wide area of ​​the side direction. [Means for solving the problem]

[0006] To achieve the above objective, the lighting lamp according to the present invention comprises a lighting lamp body having a light source and a substrate on which the light source is mounted, and a translucent cover having a dome portion that covers the light-emitting surface side of the lighting lamp body and a cover side portion that extends from the outer edge of the dome portion toward the lighting lamp body, and is configured to be attachable to the lighting lamp body, wherein the thickness of the cover side portion is less than or equal to the thickness of the dome portion.

[0007] In the lighting lamp according to the present invention, it is preferable that the thickness of the cover side portion is uniform with the thickness of the dome portion.

[0008] In the lighting lamp according to the present invention, the lighting lamp body further comprises a side portion extending in a direction intersecting the substrate, the substrate is arranged in a space enclosed by the side portion, the side portion comprises a projection that protrudes toward the emission direction side from the light-emitting surface of the light source, and the length of the projection along the emission direction may be 20% or less of the distance along the emission direction from the light-emitting surface of the light source to the apex of the inner surface of the dome portion.

[0009] In the lighting lamp according to the present invention, it is preferable that the protruding portion has a shorter length than the side portion of the cover.

[0010] In the lighting lamp according to the present invention, it is preferable that the translucent cover has an outer diameter smaller than the outer diameter of the lighting lamp body.

[0011] In the lighting lamp according to the present invention, the cover side portion may have an inner diameter larger than the outer diameter of the lighting lamp body and be configured to cover the side of the lighting lamp body.

[0012] In this case, it is preferable that the inner surface of the side portion of the cover or the outer surface of the lighting lamp body is provided with a mounting portion on which the translucent cover can be attached to the lighting lamp body.

[0013] The lighting fixture according to the present invention is characterized by comprising the above-described lighting lamp and a socket to which the lighting lamp can be attached. [Effects of the Invention]

[0014] According to the present invention, it is possible to provide a lighting lamp and lighting fixture that can brightly illuminate not only the front direction of the translucent cover but also a wide area in the side direction. [Brief explanation of the drawing]

[0015] [Figure 1] This is a side view showing a lighting fixture according to the first embodiment. [Figure 2] This is a cross-sectional view of a lighting lamp according to the first embodiment. [Figure 3] Figure 2 is a magnified view of the lighting lamp shown. [Figure 4] This is an exploded perspective view showing a lighting lamp according to the first embodiment. [Figure 5] This is a side view showing the usage state of the lighting fixture according to the first embodiment. [Figure 6] This is a side view showing a lighting fixture according to the second embodiment. [Figure 7] This is a cross-sectional view of a lighting lamp according to the second embodiment. [Figure 8] Figure 7 is a magnified view of the lighting lamp shown. [Figure 9] This is an exploded perspective view showing a lighting lamp according to the second embodiment. [Figure 10] This is a side view showing a conventional lighting fixture. [Modes for carrying out the invention]

[0016] Hereinafter, preferred embodiments for implementing the present invention will be described with reference to the drawings. Note that the following embodiments do not limit the invention according to each claim, and not all combinations of features described in the embodiments are essential for the solution means of the invention. Also, in this embodiment, the scales and dimensions of each component may be exaggerated, or some components may be omitted.

[0017] [First Embodiment] As shown in FIG. 1, the lighting fixture 100 according to this embodiment includes a lighting lamp 1 and a socket 2 to which the lighting lamp 1 can be attached. The lighting fixture 100 can be used, for example, to cover the periphery of the lighting fixture 100 with a translucent panel 4 or the like (see FIG. 5) to make the entire translucent panel 4 glow dimly, and can also be installed and used at various locations such as on a ceiling or a wall. Also, the lighting fixture 100 may be in a non-dimming and non-color-adjusting mode, or may be configured to be dimmable and color-adjustable.

[0018] [Configuration of Lighting Lamp] As shown in FIGS. 2 and 3, the lighting lamp 1 according to this embodiment includes a lighting lamp body 10 having a light source 11 and a substrate 12 on which the light source 11 is mounted, and a translucent cover 20 configured to be attachable to the lighting lamp body 10, and is configured to be detachable from the socket 2.

[0019] In this embodiment, the translucent cover 20 can be formed of, for example, materials such as acrylic resin (PMMA) or polycarbonate resin (PC), but is not limited thereto, and can be formed of various known materials.

[0020] Hereinafter, in this embodiment, the direction in which the lighting lamp 1 is attached to the socket 2 is defined as the rear, and the opposite direction (i.e., the direction in which light is emitted from the light source 11) is defined as the front.

[0021] As shown in Figures 1 to 4, the lighting lamp body 10 has a bottom portion 13 and a side portion 14 extending forward from the outer edge of the bottom portion 13, and as a whole it has a substantially bottomed cylindrical shape. Also, as shown in Figures 2 and 3, the lighting lamp body 10 has a space S enclosed by the side portion 14, and a light source 11, a substrate 12, and a power supply circuit (not shown) are arranged in this space S.

[0022] As shown in Figure 4, the bottom portion 13 is formed in a circular shape when the lighting lamp body 10 is viewed from the rear. The base portion 15 and a pair of electrode pins 16 are located behind the bottom portion 13.

[0023] As shown in Figures 1-4, the base portion 15 is formed to protrude rearward from the central part of the bottom portion 13. Furthermore, while the base portion 15 has, for example, a GX53 type base structure, it is not limited to this and may have any shape corresponding to the shape of the socket 2.

[0024] As shown in Figures 1-4, the pair of electrode pins 16 protrude rearward from the bottom portion 13 and are positioned near the left and right ends of the base portion 15 in a side view of the lamp body 10. The pair of electrode pins 16 are inserted into an opening (not shown) formed in the socket 2 when the lamp 1 is mounted in the socket 2. By rotating the lamp 1 relative to the socket 2, the electrode pins 16 are fixed to the socket 2, and the lamp 1 can be mounted in the socket 2.

[0025] The pair of electrode pins 16 are configured to be electrically connected to the facility's power source via the socket 2 when the lighting lamp 1 is installed in the socket 2. Furthermore, the pair of electrode pins 16 are configured to be electrically connected to a power supply circuit located within the space S. Therefore, when a user presses a switch, power is supplied to the power supply circuit via the socket 2 and the pair of electrode pins 16.

[0026] As shown in Figures 1-4, the side portion 14 is formed extending vertically forward from the outer peripheral edge of the bottom portion 13. That is, the side portion 14 is formed extending along a direction intersecting the substrate 12 (in this embodiment, a direction perpendicular to it). Furthermore, as shown in Figures 2 and 3, the side portion 14 has a protrusion 14a that protrudes toward the emission direction side from the light-emitting surface of the light source 11. That is, the protrusion 14a is the portion of the side portion 14 from the position that coincides with the light-emitting surface of the light source 11 in the front-rear direction to the front end of the side portion 14. Specifically, as shown in Figure 3, the length L1 of the protrusion 14a is preferably 15% or less, and more preferably 12% or less, of the length L3 along the front-rear direction of the side portion 14, i.e., the length from the rear surface of the bottom portion 13 to the front end of the side portion 14.

[0027] As shown in Figure 3, the protrusion 14a is formed to be shorter than the length L4 of the cover side portion 22 of the translucent cover 20, which will be described later, that is, the length from the imaginary line VL to the front end of the protrusion 14a. Furthermore, the length L1 of the protrusion 14a along the front-rear direction is preferably 20% or less, and more preferably 15% or less, of the distance L2 along the front-rear direction from the light-emitting surface of the light source 11 to the apex of the inner surface of the dome portion 21, which will be described later.

[0028] From the above perspective, the length L1 of the protruding portion 14a along the front-rear direction is preferably 5 mm or less, and more preferably 2 mm or less.

[0029] Because the protruding portion 14a is configured in this way, the obstruction that blocks light transmitted through the lateral direction of the translucent cover 20 is reduced, so that the lateral direction of the translucent cover 20 can be brightly illuminated over a wide area.

[0030] As shown in Figures 2 and 3, the light source 11 is a light-emitting element such as an LED or an organic EL, and is configured to emit light forward when power is supplied from the power supply circuit. Multiple light sources 11 are arranged on the surface of the substrate 12. The substrate 12 is a plate-shaped printed circuit board and has an outer diameter smaller than the inner diameter of the side portion 14. The substrate 12 is arranged parallel to the bottom portion 13 in the front-to-back direction, and the power supply circuit is arranged between the bottom portion 13 and the substrate 12.

[0031] As shown in Figures 1 to 4, the translucent cover 20 has a dome portion 21 that covers the light-emitting side of the illumination lamp body 10, a cover side portion 22 that extends from the outer edge of the dome portion 21 toward the illumination lamp body 10, and a mounting portion 23 that extends toward the rear from the rear end of the cover side portion 22, and has a concave shape that opens toward the rear.

[0032] Furthermore, the translucent cover 20 has an outer diameter smaller than the outer diameter of the lighting lamp body 10. Specifically, the translucent cover 20 is formed such that the outer diameter at the largest part of the cover side portion 22 is smaller than the outer diameter at the largest part of the bottom portion 13 of the lighting lamp body 10. More specifically, the outer diameter of the translucent cover 20 is preferably 70 mm or less, and more preferably 68 mm or less.

[0033] As shown in Figure 2, the translucent cover 20 is positioned such that the dome portion 21 is located in front of the imaginary line VL passing through the boundary between the dome portion 21 and the cover side portion 22, and the cover side portion 22 is located behind the imaginary line VL. Here, the imaginary line VL is a horizontal line passing through the starting point (the end on the cover side portion 22 side) of an R-shaped corner that transitions from the inner surface of the cover side portion 22, which is parallel to the front-rear direction, toward the inner surface of the curved dome portion 21, which is convex toward the front, in a cross-section along the front-rear direction of the translucent cover 20.

[0034] As shown in Figures 1-3, the dome portion 21 has a hemispherical shape formed at the center of the lighting lamp body 10 and bulging forward. Specifically, as shown in Figure 3, the dome portion 21 is formed such that the angle θ between the straight line SL1 passing through the apex of the dome portion 21 and the starting point of the reference line VL, and the straight line SL2 passing through the rear end and front end of the cover side portion 22, is greater than 90°, preferably 100° or more. Furthermore, it is preferable that the angle θ between the straight line SL1 and the straight line SL2 of the dome portion 21 is 125° or less, and more preferably 120° or less.

[0035] Furthermore, the dome portion 21 has a sufficient bulge in the forward direction to reflect light emitted from the light source 11 off the dome portion 21 and diffuse the light to the cover side portion 22. Specifically, as shown in Figure 3, the distance L2 along the front-rear direction from the light-emitting surface of the light source 11 to the apex of the inner surface of the dome portion 21 is preferably 36% or less of the length of the inner diameter of the light-transmitting cover 20, and more preferably 25% or less. More specifically, the distance L2 along the front-rear direction from the light-emitting surface of the light source 11 to the apex of the inner surface of the dome portion 21 is preferably 5 mm or more and 25 mm or less, and more preferably 10 mm or more and 15 mm or less.

[0036] Thus, because the dome portion 21 has a shape that bulges forward, the light emitted from the light source 11 can be diffused not only in the front direction of the translucent cover 20, but also over a wide area in the side direction.

[0037] As shown in Figure 2, the cover side portion 22 is formed extending rearward from the rear end of the dome portion 21, and the rear end of the cover side portion 22 is configured to contact the front end of the projection portion 14a. Furthermore, as shown in Figure 3, the length L4 of the cover side portion 22 along the front-rear direction, that is, the length from the dashed line VL to the front end of the projection portion 14a, is formed to be longer than the length L1 of the projection portion 14a. Specifically, the length L4 of the cover side portion 22 along the front-rear direction is preferably 3 mm or more, and more preferably 5 mm or more.

[0038] Furthermore, the cover side portion 22 is configured such that its thickness is less than or equal to the thickness of the dome portion 21. More preferably, the cover side portion 22 is formed so that its thickness is uniform with the thickness of the dome portion 21. The thickness of the cover side portion 22 and the dome portion 21 is preferably, for example, 2.5 mm or less, and more preferably 1.5 mm or less, in order to suppress the attenuation of light transmitted through the translucent cover 20 and to achieve excellent light transmittance. In addition, the thickness of the cover side portion 22 and the dome portion 21 is preferably, for example, 1 mm or more, in order to ensure rigidity.

[0039] As shown in Figures 2 to 4, the mounting portion 23 is configured to prevent the translucent cover 20 from falling off when the translucent cover 20 is attached to the lighting lamp body 10. Specifically, the mounting portion 23 is formed extending backward from near the inner surface of the rear end of the cover side portion 22, and is configured to be mounted on the inner surface of the protrusion 14a when the translucent cover 20 is attached to the lighting lamp body 10. Various methods can be used to mount the translucent cover 20 to the lighting lamp body 10. For example, it may be a method in which a recess formed on one side is fitted with a protrusion formed on the other side, or a method in which threads formed on both sides are screwed together, or a method in which the mounting portion 23 of the translucent cover 20 is press-fitted into the inside of the protrusion 14a, or a method in which the inner surface of the protrusion 14a and the mounting portion 23 are bonded together with an adhesive or the like. By attaching the mounting portion 23 to the protruding portion 14a, the translucent cover 20 can be attached to the lighting lamp body 10.

[0040] [Socket configuration] As shown in Figure 1, the socket 2 is configured to accommodate the illumination lamp 1. The socket 2 also has an opening (not shown) into which the base portion 15 and a pair of electrode pins 16 can be inserted. Since the socket 2 can adopt various known shapes and structures, a detailed explanation thereof is omitted.

[0041] [How to use lighting fixtures] Next, an example of how the lighting fixture 100 according to this embodiment can be used will be described. As shown in Figure 5, the lighting fixture 100 is used, for example, by being installed on a mounting base 3 and surrounded by a translucent panel 4. Specifically, with the socket 2 attached to the mounting base 3, the base portion 15 and a pair of electrode pins 16 of the lighting lamp body 10 are inserted into the multiple openings formed in the socket 2. With the base portion 15 and the pair of electrode pins 16 inserted, the lighting lamp 1 is rotated so that the pair of electrode pins 16 are fixed to the socket 2, and the lighting lamp 1 can be attached to the socket 2. In other words, the lighting lamp 1 can be attached to the mounting base 3. Furthermore, the mounting base 3 and the lighting lamp 1 are electrically connected via the socket 2.

[0042] Next, the translucent panel 4 is fitted onto the mounting base 3 so as to cover the perimeter of the lighting fixture 100. In this state, the wiring provided on the mounting base 3 is connected to a power source in the facility, and the user operates a switch or remote control (remote controller) provided on the mounting base 3, thereby supplying power from the facility to the light source 11 via the mounting base 3, socket 2, electrode pins 16 and electrical circuit, causing the light source 11 to emit light and dimly illuminate the translucent panel 4. At this time, as shown in Figure 5, the lighting lamp body 10 according to this embodiment can brightly illuminate not only the front of the translucent cover 20 but also a wide area in the side direction. That is, it can brightly illuminate up to the rear region RA of the translucent cover 20, so when the translucent panel 4 is viewed from the outside, it can brightly illuminate almost the entire surface of the translucent panel 4.

[0043] [Advantages of the lighting fixture according to the first embodiment] As described above, the illumination lamp 1 according to this embodiment comprises an illumination lamp body 10 having a light source 11 and a substrate 12 on which the light source 11 is mounted, and a translucent cover 20 having a dome portion 21 that covers the light-emitting side of the illumination lamp body 10 and a cover side portion 22 that extends from the outer edge of the dome portion 21 toward the illumination lamp body 10, and configured to be attachable to the illumination lamp body 10, wherein the thickness of the cover side portion 22 is less than or equal to the thickness of the dome portion 21.

[0044] With the lighting lamp 1 having this configuration, since the diffusion surface of the translucent cover 20 is formed in a dome shape, light can be diffused not only in the front direction of the translucent cover 20 but also in the side direction. Therefore, the entire surface of the translucent cover 20 can be brightly illuminated. For this reason, the lighting lamp 1 according to this embodiment can realize a lighting configuration with a high level of design.

[0045] Furthermore, in the lighting lamp 1 according to this embodiment, the thickness of the cover side portion 22 is uniform with the thickness of the dome portion 21. With a lighting lamp 1 having such a configuration, since the thickness of the cover side portion 22 is formed to be uniform with the thickness of the dome portion 21, the light transmittance can be made to be approximately the same in the front direction and the side direction of the translucent cover 20, and the entire surface portion of the translucent cover 20 can be brightly illuminated.

[0046] Furthermore, in the illumination lamp 1 according to this embodiment, the illumination lamp body 10 further includes a side portion 14 extending in a direction intersecting the substrate 12, the substrate 12 is arranged in a space enclosed by the side portion 14, the side portion 14 includes a protrusion 14a that protrudes toward the emission direction side from the light-emitting surface of the light source 11, and the length of the protrusion 14a along the emission direction is 20% or less of the distance along the emission direction from the light-emitting surface of the light source 11 to the apex of the inner surface of the dome portion 21. With the illumination lamp 1 having such a configuration, since the length of the protrusion 14a along the emission direction is formed to be 20% or less of the distance along the emission direction from the light-emitting surface of the light source 11 to the apex of the inner surface of the dome portion 21, the obstruction that blocks light transmitted through the side direction of the translucent cover 20 is reduced, and the translucent cover 20 can be brightly illuminated not only in the front direction but also over a wide area in the side direction.

[0047] Furthermore, in the lighting lamp 1 according to this embodiment, the protruding portion 14a has a shorter length than the cover side portion 22. With a lighting lamp 1 having such a configuration, since the protruding portion 14a is formed to be shorter than the cover side portion 22, the portion that blocks the light transmitted through the translucent cover 20 in the lateral direction is reduced, and the translucent cover 20 can be brightly illuminated not only in the front direction but also over a wide area in the lateral direction.

[0048] Furthermore, in the illumination lamp 1 according to this embodiment, the translucent cover 20 has an outer diameter smaller than the outer diameter of the illumination lamp body 10. With the illumination lamp 1 having such a configuration, by making the outer diameter of the translucent cover 20 smaller than the outer diameter of the illumination lamp body 10, the thickness of the cover side portion 22 can be formed to be less than or equal to the thickness of the dome portion 21, preferably uniformly with the thickness of the dome portion 21.

[0049] [Second Embodiment] A lighting fixture 200 according to the second embodiment will now be described. Components having the same configuration as the lighting fixture 100 according to the first embodiment will be given the same reference numerals, and their detailed descriptions will be omitted. Furthermore, the method of using the lighting fixture 200 according to the second embodiment is the same as that of the lighting fixture 100 according to the first embodiment, and therefore its description will be omitted.

[0050] The lighting fixture 200 according to the second embodiment differs from the lighting fixture 100 according to the first embodiment in that the side portion 22' of the translucent cover 20' has an inner diameter larger than the outer diameter of the lighting lamp body 10 and is configured to cover the side of the lighting lamp body 10, and that it has a mounting portion 24. This will be explained below with reference to the drawings.

[0051] As shown in Figures 6 to 8, the translucent cover 20' has a larger diameter than the lighting lamp body 10. Specifically, the translucent cover 20' is formed such that the inner diameter at the smallest part of the cover side portion 22' is larger than the outer diameter at the largest part of the side portion 14 of the lighting lamp body 10. More specifically, the inner diameter of the cover side portion 22' is preferably 68 mm or more, and more preferably 70 mm or more.

[0052] As shown in Figures 6 to 8, the dome portion 21' of the translucent cover 20' is formed to bulge forward, similar to the dome portion 21 in the first embodiment. Specifically, as shown in Figure 8, the angle θ' between the straight line SL1 passing through the apex of the dome portion 21' and the starting point of the reference imaginary line VL, and the straight line SL2 passing through the rear end and front end of the cover side portion 22', is formed to be greater than 90°, preferably 100° or more. Furthermore, it is preferable that the angle θ' between the straight line SL1 and the straight line SL2 of the dome portion 21' is 125° or less, and more preferably 120° or less.

[0053] Furthermore, the dome portion 21', like the dome portion 21 according to the first embodiment, has a sufficient bulge in the forward direction to reflect light emitted from the light source 11 off the dome portion 21' and diffuse the light to the cover side portion 22'. Specifically, as shown in Figure 8, the distance L2' along the front-rear direction from the light-emitting surface of the light source 11 to the apex of the inner surface of the dome portion 21' is preferably 32% or less of the length of the inner diameter of the light-transmitting cover 20', and more preferably 20% or less. More specifically, the distance L2' along the front-rear direction from the light-emitting surface of the light source 11 to the apex of the inner surface of the dome portion 21' is preferably 5 mm or more and 25 mm or less, and more preferably 10 mm or more and 15 mm or less.

[0054] Furthermore, the length L1 of the protruding portion 14a along the front-rear direction is preferably 20% or less, and more preferably 15% or less, of the distance L2' along the front-rear direction from the light-emitting surface of the light source 11 to the apex of the inner surface of the dome portion 21', similar to the first embodiment.

[0055] Furthermore, the translucent cover 20' is configured such that the cover side portion 22' covers the side of the lighting lamp body 10. Specifically, as shown in Figures 7 and 8, the cover side portion 22' extends from the rear end of the dome portion 21' to the rear end of the side portion 14. As shown in Figure 8, the length of the cover side portion 22' along the front-rear direction, i.e., the length L4' from the dashed line VL to the rear end of the cover side portion 22', is longer than the length L3 of the side portion 14. It is preferable that the length L3 of the side portion 14 be 10 mm or more, and more preferably 15 mm or more.

[0056] The mounting portion 24 is formed on either the inner surface of the cover side portion 22' or the outer surface of the side portion 14 of the lighting lamp body 10. Specifically, as shown in Figures 7 and 9, the mounting portion 24 is arranged in multiple locations (three at 120° intervals in the illustrated example) at intervals along the circumferential direction near the rear end of the inner surface of the cover side portion 22', and is a projection with a roughly triangular cross-section that protrudes inward from the cover side portion 22'.

[0057] Furthermore, as shown in Figures 7 and 9, mounting grooves 14b are formed on the outer surface of the side portion 14 at positions corresponding to each mounting portion 24 when the translucent cover 20' is attached to the lighting lamp body 10, and these grooves are capable of engaging with the mounting portion 24. By engaging the mounting grooves 14b with the mounting portion 24, the translucent cover 20' can be attached to the lighting lamp body 10 in a state where it cannot rotate relative to it.

[0058] In this embodiment, the mounting portion 24 is described as being formed in multiple locations on the inner surface of the cover side portion 22' of the translucent cover 20', and a mounting groove 14b that can engage with the mounting portion 24 is formed on the side portion 14 of the lighting lamp body 10. However, the embodiment is not limited to this, and a configuration in which the mounting groove is formed on the inner surface of the cover side portion 22' and the mounting portion is formed on the outer surface of the side portion 14 is also possible. Furthermore, in addition to a configuration in which a recess formed on one side is fitted with a protrusion formed on the other side, the mounting portion 24 can employ various arbitrary configurations, such as a configuration in which screw threads formed on both sides are screwed together.

[0059] [Advantages of the lighting fixture according to the second embodiment] As described above, the lighting lamp 1' according to the second embodiment is provided with a mounting portion 24 on either the inner surface of the cover side portion 22' or the outer surface of the side portion 14 of the lighting lamp body 10, to which the translucent cover 20' can be attached to the lighting lamp body 10.

[0060] Even with a lighting lamp 1' having such a configuration, it is possible to make the thickness of the cover side portion 22' less than or equal to the thickness of the dome portion 21', preferably uniform, and thus it has the same advantages as the lighting lamp 1 according to the first embodiment described above.

[0061] [Differentiation] The lighting fixture according to the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the technical concept of the present invention.

[0062] For example, in the embodiment described above, the thickness of the cover side portion 22 was described as being uniform with the thickness of the dome portion 21, but the invention is not limited to this, and the thickness of the cover side portion 22 may be thinner than the thickness of the dome portion 21.

[0063] Furthermore, in the above-described embodiment, the side portion 14 was described as having a protruding portion 14a that protrudes toward the emission direction side from the light-emitting surface of the light source 11. However, the embodiment is not limited to this, and for example, the front end of the side portion 14 may be located at a position that coincides with or behind the light-emitting surface of the light source 11 in the front-rear direction, and no protruding portion 14a may be formed.

[0064] Furthermore, although the above-described embodiment explained that the mounting portion 24 is formed on either the inner surface of the cover side portion 22' or the outer surface of the side portion 14 of the lighting lamp body 10, it is not limited to this, and for example, the mounting portion 24 may not be provided, and the cover side portion 22' and the side portion 14 may be attached.

[0065] Furthermore, although the above-described embodiment assumed that the lighting lamp body 10 includes a base portion 15, it is not limited to this, and a configuration without a base portion 15 is also possible. In other words, in this specification, "lamp" also includes lighting means that do not include a base portion, such as a lighting module.

[0066] It is clear from the claims that the above-mentioned modifications are included within the scope of the present invention. [Explanation of symbols]

[0067] 1 Lighting lamp 1' Lighting lamp 2 sockets 3 Installation stand 4. Translucent Panel 10. Lighting lamp body 11 Light source 12 circuit boards 13 Bottom part 14 Side part 14a Protrusion 14b Mounting groove 15. Mouthpiece 16 electrode pins 20 Translucent cover 20' Translucent cover 21 Dome section 21' Dome Section 22 Cover side 22' Side of cover 23 Mounting part 24 Mounting part 100 lighting fixtures 200 lighting fixtures S space VL virtual line

Claims

1. A lighting lamp body having a light source and a circuit board on which the light source is mounted, and configured to be detachable from a socket, A translucent cover having a dome portion that covers the light-emitting surface side of the lamp body, a cover side portion extending from the outer edge of the dome portion toward the lamp body, and a mounting portion extending from the end of the cover side portion toward the lamp body, and configured to be attachable to the front side of the lamp body. Equipped with, The lamp body has a bottom surface, a side surface extending in a direction intersecting the substrate, a protrusion formed projecting rearward from the bottom surface, and a pair of electrode pins arranged on the left and right sides of the protrusion. The aforementioned side portion has a protrusion that extends forward from the light-emitting surface of the light source, The aforementioned protrusion and the pair of electrode pins are configured to be insertable into the socket. In a cross-section of the translucent cover along the front-rear direction, the dome portion is located forward of a virtual line passing perpendicular to the front-rear direction, at the starting point of the R-shaped corner that transitions from the inner surface of the cover side portion parallel to the front-rear direction toward the inner surface of the dome portion. The side portion of the cover is located behind the dashed line. The dome portion is formed to bulge outwards towards the center and forward of the lighting lamp body. The side portion of the cover has an outer diameter smaller than the outer diameter of the lighting lamp body. The thickness of the side portion of the cover is less than or equal to the thickness of the dome portion. The length of the cover side portion along the front-rear direction is formed to be longer than the length of the protruding portion along the front-rear direction. The mounting portion is configured to be attached to the inner surface of the side portion when the translucent cover is attached to the lighting lamp body. A lighting lamp characterized by the following features.

2. A lighting lamp body having a light source and a circuit board on which the light source is mounted, and configured to be detachable from a socket, A translucent cover having a dome portion that covers the light-emitting side of the lamp body and a cover side portion that extends from the outer edge of the dome portion toward the lamp body, and configured to be attachable to the front side of the lamp body. Equipped with, The lamp body has a bottom surface, a side surface extending in a direction intersecting the substrate, a protrusion formed projecting rearward from the bottom surface, and a pair of electrode pins arranged on the left and right sides of the protrusion. The aforementioned protrusion and the pair of electrode pins are configured to be insertable into the socket. The dome portion is formed to bulge outwards towards the center and forward of the lighting lamp body. The side portion of the cover has an inner diameter larger than the outer diameter of the lighting lamp body and is configured to cover the side of the lighting lamp body. The length of the cover side portion along the front-rear direction is formed to be longer than the length of the side portion along the front-rear direction. The thickness of the cover side portion is less than or equal to the thickness of the dome portion. A lighting lamp characterized by the following features.

3. Either the inner surface of the side of the cover or the outer surface of the lamp body is provided with a mounting portion on which the translucent cover can be attached to the lamp body. The lighting lamp according to feature 2.

4. A lighting lamp body having a light source and a circuit board on which the light source is mounted, and configured to be detachable from a socket, A translucent cover having a dome portion that covers the light-emitting side of the lamp body and a cover side portion that extends from the outer edge of the dome portion toward the lamp body, and configured to be attachable to the front side of the lamp body. Equipped with, The lamp body has a bottom surface, a protrusion formed to project rearward from the bottom surface, and a pair of electrode pins arranged on the left and right sides of the protrusion. The aforementioned protrusion and the pair of electrode pins are configured to be insertable into the socket. In a cross-section of the translucent cover along the front-rear direction, the dome portion is located forward of a virtual line passing perpendicular to the front-rear direction, at the starting point of the R-shaped corner that transitions from the inner surface of the cover side portion parallel to the front-rear direction toward the inner surface of the dome portion. The side portion of the cover is located behind the dashed line. The thickness of the side portion of the cover is less than or equal to the thickness of the dome portion. The lighting lamp body further comprises a side portion extending in a direction intersecting the substrate, The substrate is placed within the space enclosed by the side portion, The aforementioned side portion includes a protrusion that extends forward from the light-emitting surface of the light source, The length of the protrusion along the front-rear direction is 20% or less of the distance along the front-rear direction from the light-emitting surface of the light source to the apex of the inner surface of the dome portion. The length of the cover side portion along the front-rear direction is formed to be longer than the length of the protruding portion along the front-rear direction. A lighting lamp characterized by the following features.

5. The thickness of the cover side portion is uniform with the thickness of the dome portion. A lighting lamp according to any one of claims 1 to 4.

6. The dome portion is formed such that, in a cross-section along the front-to-back direction of the translucent cover, the angle between a first straight line passing through the apex of the inner surface of the dome portion and the end of the inner surface of the dome portion on the cover side, and a second straight line passing through the rear and front ends of the inner surface of the cover side, is greater than 90° and less than or equal to 125°. A lighting lamp according to any one of claims 1 to 5.

7. A lighting lamp according to any one of claims 1 to 6, A socket on which the aforementioned lighting lamp can be installed A lighting fixture characterized by having the following features.

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